SPEOS CAA V5 Based Optical Shape Design V13.0

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1 SPEOS CAA V5 Based Optical Shape Design V13.0

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3 Table of Contents Getting Started... 5 Changing the User Interface Language... 5 Managing Documents... 5 Features... 6 Parabolic Surface... 7 Parabolic Surface Overview... 7 Creating a Parabolic Surface... 7 Parameters of a Parabolic Surface... 8 Elliptical Surface Elliptical Surface Overview Creating an Elliptical Surface Parameters of an Elliptical Surface Collimating Surface Collimating Surface Overview Creating a Collimating Surface Parameters of a Collimating Surface Optical Surface Optical Surface Overview Creating an Optical Surface Parameters of a Pillow Surface Near Field Lens Near Field Lens Overview Creating a Near Field Lens Parameters of a Near Field Lens Optical Lens Optical Lens Overview Creating an Optical Lens Parameters of an Optical Lens Light Guide Light Guide Overview Creating a Light Guide Parameters of a Light Guide Tutorials Creating a Smooth Reflector Creating a Faceted Reflector Lesson 1: Creating the Reflector Lesson 2: Exchanging the Geometry Creating a LED Lens Lesson 1: Creating the Near Field Lens Lesson 2: Running Interactive and Direct Simulations Lesson 3: Measuring of Angular Aperture Lesson 4: Measuring of Efficiency Lesson 5: Adding the Lens Array Lesson 6: Analyzing the Influence of the Lens Array Creating a Light Guide Creating a High Beam Reflector Lesson 1: Opening Project Lesson 2: Creating the Reflector Lesson 3: Cutting the Reflector Lesson 4: Applying Material to the Reflector Lesson 5: Adding Optical Properties to Materials Lesson 6: Creating an Intensity Sensor Lesson 7: Creating a Direct Simulation Lesson 8: Running the Direct Simulation Lesson 9: Creating Measures Lesson 10: Checking the Regulation... 81

4 Transferring Geometrical Data Index... 86

5 GETTING STARTED Changing the User Interface Language To set the japanese language for the user interface, you can view the CATIA V5 User's Documentation. The technical documentation automatically appears in english for all the selected languages. Managing Documents Features Feature created by Copy/Paste inherits its name from the copied feature s name followed by a dot and the index of the copy. Isolated Simulation Isolated simulation inherits its name from the original simulation followed by a dot and the index of the isolation. Getting Started Page 5 of 88

6 FEATURES ptical Shape Design (OSD) toolbar is integrated in the Shape, Generative Shape Design and Part Design workbenches. Opening with CATIA V5 alone This table describes the capability to open and/or use CATParts including OSD features created with SPEOS CAA V5 Based V13 with CATIA V5 alone: PARABOLIC SURFACE ELLIPTICAL SURFACE COLLIMATING SURFACE OPTICAL SURFACE NEAR FIELD LENS OPTICAL LENS LIGHT GUIDE R18 R19 R20 R21 The warning message displayed at the file opening can be deactivated. For more details, you can view The startup catalog files in the following list could not be found. Usability with CATIA V5 alone This table describes the capability to use the geometrical result of OSD features with CATIA V5 commands with CATIA V5 alone: PARABOLIC SURFACE ELLIPTICAL SURFACE COLLIMATING SURFACE OPTICAL SURFACE NEAR FIELD LENS OPTICAL LENS LIGHT GUIDE R18 R19 R20 R21 This limitation can be bypassed by carrying out a procedure. For more details, you can view Geometrical Data Transfer Tutorial see page 83. Page 6 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

7 Parabolic Surface Parabolic Surface Overview The parabolic surface is designed in order that each ray coming from the focus point be collimated in surface axis direction after a specular reflection on the surface: Creating a Parabolic Surface 1. Click Parabolic Surface (Optical Shape Design). 2. Set the parameters see page Click OK. The parabolic surface is added to the specification tree. Features Page 7 of 88

8 Parameters of a Parabolic Surface Type Focal Focal must be entered. Passing Point Passing point must be selected. Axis Select a line giving the direction of the revolution axis of the surface. Direction of the surface can be changed by clicking Reverse Direction. Focus does not necessarily belong to Axis. When not, the revolution axis of the surface is defined by the direction of Axis and by Focus. Focus Select a point giving the position of the source. The source is assumed punctual. Orientation Select a line fixing the orientation of the surface around Axis. Orientation may not be defined on a plane normal to Axis; In this case, Orientation is automatically projected onto such a plane. Page 8 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

9 Focal Type the value of the focal length of the surface. The focal length is the distance between the top and the focus. This parameter must be entered when type is Focal only. When type is Passing point, this parameter is driven by the passing point and displayed for information. Size Type the value of an edge of the surface (side of the square obtained when considering a plane normal to Axis). Passing Point Select a point which is going to belong to the surface. Features Page 9 of 88

10 Elliptical Surface Elliptical Surface Overview The elliptical surface is designed in order that each ray coming from the interior focus be passing by the exterior focus after a specular reflection on the surface: Creating an Elliptical Surface 1. Click Elliptical Surface (Optical Shape Design). 2. Set the parameters see page Click OK. The elliptical surface is added to the specification tree. Page 10 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

11 Parameters of an Elliptical Surface Type Radii Center and Axis must be selected. Transverse Radius must be entered. Foci Interior Focus and Exterior Focus must be selected. Center Select a point which is the center of the ellipse. Interior Focus Select a point which is the interior focus of the ellipse (surface-side). The focus is the punctual locus where all the light rays converge. Exterior Focus Select a point which is the exterior focus of the ellipse (opening-side). The focus is the punctual locus where all the light rays converge. Axis Select a line giving the direction of the revolution axis of the surface. Direction of the surface can be changed by clicking Reverse Direction. Center does not necessarily belong to Axis. When not, the revolution axis of the surface is defined by the direction of Axis and by Center. Length Type the value of the size of the arc of ellipse along Axis. Conjugate Radius Type the value of the ellipse radius along the normal to Axis. Features Page 11 of 88

12 Transverse Radius Type the value of the ellipse radius along Axis. Focal Type the value of the focal length of the ellipse (distance between the center and one of the foci along the revolution axis). Collimating Surface Collimating Surface Overview The collimating surface is designed in order that each ray coming from the focus point be collimated in surface axis direction after passing trough the surface: Creating a Collimating Surface 1. Click Collimating Surface (Optical Shape Design). 2. Set the parameters see page Click OK. The collimating surface is added to the specification tree. Page 12 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

13 Parameters of a Collimating Surface Type Size Size must be entered. Thickness Thickness must be entered. Axis Select a line giving the direction of the revolution axis of the surface. Direction of the surface can be changed by clicking Reverse Direction. Focus does not necessarily belong to Axis. When not, the revolution axis of the surface is defined by the direction of Axis and by Focus. Focus Select a point giving the focus of the surface. The focus is the punctual locus where all the light rays converge. Focal Type the value of the focal length of the surface (distance between the top and the focus). Index 1 Type a value for Index 1. The surface is calculated using two refractive indices. This assumes that the surface is closed to make a lens. Index 1 is the refractive index of the external medium. Index 2 Type a value for Index 2. The surface is calculated using two refractive indices. This assumes that the surface is closed to make a lens. Index 2 is the refractive index of the lens. Size Type a value for Size. Features Page 13 of 88

14 Let us consider a plane including Axis and a normal to Axis on this plane. Size is the dimension of the surface along this normal. Thickness Type a value for Thickness. Let us consider a plane including Axis. Thickness is the dimension of the surface along Axis. Optical Surface Optical Surface Overview The optical surface is designed in order to make a faceted reflector according to specific support and grid. The facets of this reflector are shaped with parameters specified by the user. Creating an Optical Surface 1. Click Optical Surface (Optical Shape Design). 2. Set the parameters see page 14 for each tab. 3. Click OK. The optical surface is added to the specification tree. All the groups of pillows appear on the specification tree. For the moment, the feature is limited to a single group of pillows named Group.1. Parameters of a Pillow Surface Reflector Source Punctual Select a point giving the position of the source. This parameter is used to calculate the surface according to the specifications. Extended Select a surface giving the emitting surface of the extended source. In practical, this parameter can be the external surface of a filament, a cylinder, a LED's chip, or any other surface. Page 14 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

15 Filament - H1 lamp Cylinder - H1 lamp Chip - Luxeon Rebel ES This parameter is required to display the source images. Support Parabolic Surface The support of the pillows is a parabolic surface, that means that the four corners of each pillow belong to a parabolic surface. Select the parameters: Axis: line giving the direction of the optical axis of the surface Orientation: line fixing the orientation of the surface around Axis The surface also depends of Source (Reflector tab) and Focal (Pillow tab). On future version, each pillow will have possibly a different value of Focal using groups of pillows. Axis Direction of the surface along Axis can be changed by clicking Reverse Direction. Features Page 15 of 88

16 Initial orientation on the left - Reverse Direction for Axis on the right - Axis is depicted in green and Orientation in purple Source does not necessarily belong to Axis. When not, the revolution axis of the surface is defined by the direction of Axis and by Source. Orientation When clicking Reverse Direction, both X and Y directions are changed. In this case, X Start and X End are interchanged, and Y Start and Y End are too. Initial orientation on the left - Reverse Direction for Orientation on the right - Axis is depicted in green and Orientation in purple Orientation may not be defined on a plane normal to Axis. In this case, Orientation is automatically projected onto such a plane. Freeform The support of the pillows is a freeform surface, that means that the four corners of each pillow belong to a freeform surface. The freeform support is depicted in green and the optical surface in beige - The 4 edges of each pillow belong to the support Select a surface for Support. Page 16 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

17 Grid Rectangular All the dimensions are defined on a plane normal to Axis and not on the support itself. The origin is optional. By default, it is the projection of the source point on the support in the direction of Axis. Surface Size & Element Count Type a value for: X Start, X End, Y Start, Y End: size of the surface X Count, Y Count: number of facets Surface Size & Element Sizes Type a value for: X Start, X End, Y Start, Y End: size of the surface X Size, Y Size: size of the facets Target Two ways are available to create the lens: either by using intensity or illuminance values. This parameter impacts two things on the Pillow tab: The definition of the viewer Some parameters shaping the elementary elements Intensity The target viewer displays pieces of information being intensity values. This is useful when the area to light is defined angularly. Illuminance This functionality is not available yet. Use Support Axis parameter can be unticked in order to select a custom axis system for the target. By default, the target axis of the support is used for the target (ticked case). Features Page 17 of 88

18 Pillow Freeform With this type, you can shape the pillows by specifying the target where the light should be sent. Type a value for: Alternative algorithm (Beta) Two different ways to shape the pillows are implemented for the Freeform type. Tick or untick this parameter to select the algorithm to use. Parameter ticked Parameter unticked Beam Specification X Start: angular boundary demarcating the left line of the target specification X End: angular boundary demarcating the right line of the target specification Y Start: angular boundary demarcating the bottom line of the target specification Y End: angular boundary demarcating the top line of the target specification Support Focal: focal length of the parabolic surface carrying the pillows (distance between Source and the top of the support) X Center: tilt the parabolic support axis around the X support axis Y Center: tilt the parabolic support axis around the Y support axis Focal, X Center and Y Center parameters are only available with a parabolic support. Only one point on support: boolean imposing that all the pillows have only one point belonging to the support This parameter is only available with a freeform support. Page 18 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

19 Viewer A click on a facet of the surface displays the target specification (magenta rectangle), the beam pattern (yellow lines) and the source images (yellow shapes). The beam pattern is the angular contour of the beam made by the rays ray having reflected on the pillow and coming from the source point. The target specification is the angular area ideally lit as a result of the light coming from the source point and having reflected on the facet. The viewer is updated each time that a new facet is selected. Several facets can be selected at the same time by holding the Ctrl key. Note that on this current version of the feature, a single group of pillows exists, and thus all the pillows have the same specification. Radii With this type, you can shape the pillows by specifying their radii of curvatures. Type a value for: Beam Specification X Radius: radii of curvature of the arcs of circle used to generate the pillows along the X support axis Y Radius: radii of curvature of the arcs of circle used to generate the pillows along the Y support axis Support Focal: focal length of the parabolic surface carrying the pillows (distance between Source and the top of the support) X Center: tilt the parabolic support axis around the X support axis Y Center: tilt the parabolic support axis around the Y support axis Focal, X Center and Y Center parameters are only available with a parabolic support. Only one point on support: boolean imposing that all the pillows have only one point belonging to the support This parameter is only available with a freeform support. Features Page 19 of 88

20 Viewer A click on a facet of the surface displays the beam pattern (yellow lines) and the source images (yellow shapes). The beam pattern is the angular contour of the beam made by the rays ray having reflected on the pillow and coming from the source point. The viewer is updated each time that a new facet is selected. Several facets can be selected at the same time by holding the Ctrl key. Note that on this current version of the feature, a single group of pillows exists. Sharp Cutoff WIth this type, you can shape the pillows by specifying a line being the top border of the target where the light is sent. This line is called "sharp cutoff" in reference to strict regulations where the line should not be crossed by the light. Type a value for: Alternative algorithm (Beta) Two different ways to shape the pillows are implemented for the Sharp Cutoff type. Tick or untick this parameter to select the algorithm to use. Beam Specification X Center: position of the specification target line middle point along the X target axis Y Center: position of the specification target line middle point along the Y target axis Length Start: length from the specification target line middle point to the left extremity of the line Length End: length from the specification target line middle point to the right extremity of the line Tilt: angle made by the horizontal axis and the specification target line Support Focal: focal length of the parabolic surface carrying the pillows (distance between Source and the top of the support) X Center: tilt the parabolic support axis around the X support axis Y Center: tilt the parabolic support axis around the Y support axis Focal, X Center and Y Center parameters are only available with a parabolic support. Page 20 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

21 Only one point on support: boolean imposing that all the pillows have only one point belonging to the support This parameter is only available with a freeform support. Viewer A click on a facet of the surface displays the specification target (magenta line ), the beam pattern (yellow lines) and the source images (yellow shapes). The beam pattern is the angular contour of the beam made by the rays ray having reflected on the pillow and coming from the source point. The viewer is updated each time that a new facet is selected. Several facets can be selected at the same time by holding the Ctrl key. Note that on this current version of the feature, a single group of pillows exists. Properties The Properties panel gathers some display options customizing the viewer. These options make easier the design process and provide a better understanding of the surface behavior. To reach it, right-click inside the viewer and click Properties. Sources Images This property is only available when the source has been defined as extended. With this functionality, you can display some images of the source given by the selected pillow(s). These images give us information on the surface behavior inside the target. Features Page 21 of 88

22 Source Images with X Samples = 5 and Y Samples = 3 The source images are depicted as yellow polygons bordered by red lines. The surface of the pillow is discretized according to X Samples and Y Samples giving particular points. The image of the extended source is then calculated for each of these particular points using the Snell's law. The source images are approximated because of the tessellation and the extended source convex hull considered for the calculation. When the Display boolean parameter is defined to true, the source images are displayed. Type a value for: X Samples: number of source images along the viewer's abscissa Y Samples: number of source images along the viewer's ordinate X and Y directions depend on Axis and orientation defined in the Reflector tab. Beam Pattern With this functionality, you can display the UV lines of the beam pattern for the selected pillow(s). These UV lines give us information on the shape of the beam pattern. Beam Pattern with X Samples = 5 and Y Samples = 3 Page 22 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

23 The UV lines are depicted as a network of yellow lines. The surface of the pillow is discretized according to X Samples and Y Samples giving a particular network of lines on this pillow. The reflection of this network of lines is carried out using the Snell's law from the source point. The calculation of the beam pattern is calculated considering a punctual source. If an extended source is used, the barycenter of the extended source is considered as the punctual source. When the Display boolean parameter is defined to true, the UV lines are displayed. Type a value for: X Samples: number of UV lines along the viewer's abscissa Y Samples: number of UV lines along the viewer's ordinate X and Y directions depend on Axis and orientation defined in the Reflector tab. Grid With this functionality, you can display a grid inside the viewer. This grid gives us information on the size of the beam pattern. Grid with X Step = 5deg and Y Step = 5deg The grid is depicted in a dark-colored green network of lines with a scaling. This grid can be defined in intensity (cd) or in illuminance (lux) depending on the target type defined in the Target tab. When the Display boolean parameter is defined true, the grid is displayed. Type a value for: X Step: step of the grid along the viewer's abscissa Y Step: step of the grid along the viewer's ordinate X and Y directions depend on Axis and orientation defined in the Reflector tab. Manufacturing Sewing The pillows are designed in such a way that small gap may appear sometimes between the elements. When the Sewing boolean parameter is defined to true, these gaps are automatically filled. Else, the gaps remain unfilled. Features Page 23 of 88

24 Optical surface without sewing - Gaps remain between the pillows Optical surface with sewing - Gaps between the pillows are filled Compatibility This table describes the capability to use the sewing functionality depending on the pillow type and the support type: FREEFORM FREEFORM ALTERNATIVE ALGORITHM (BETA) RADII SHARP CUTOFF PARABOLIC SUPPORT FREEFORM SUPPORT FREEFORM SUPPORT + ONLY ONE POINT ON SUPPORT Page 24 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

25 Near Field Lens Near Field Lens Overview The near field lens is an optical component designed in order that a maximum of rays coming from the focus point be collimated in component axis direction after passing through the component: The source defined at the focus point is generally a LED located on a printed circuit board (PCB): Creating a Near Field Lens A near field lens must be created in a body because it is a solid (not a surface). Features Page 25 of 88

26 1. Click Near Field Lens (Optical Shape Design). 2. Set the parameters see page Click OK. The near field lens component is added to the specification tree. Parameters of a Near Field Lens Type Thickness Thickness must be entered. Output Radius Output Radius must be entered. Source Select a point giving the position of the source (assumed punctual). Support Plane Select a plane giving the position of the input face of the near field lens. Input Radius Type a value for the internal radius of the near field lens on the support plane. Depth Type a value for the distance between the support plane and the inside of the component along the revolution axis of the near field lens. Draft Angle Type a value for the angle between the revolution axis of the near field lens. Support Thickness Type a value for Support thickness. Page 26 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

27 The near field lens is assumed fastened on a support. The part of the component laying on the support is a ring of thickness Support thickness. Index Type a value for the refractive index of the near field lens. Thickness Type a value for Thickness. Let us consider a plane including the revolution axis of the near field lens. Thickness is the dimension of the component along this axis. Output Radius Type a value for the radius of the near field lens on the output plane. Focal Type a value for the distance between the source and the top of the internal collimating surface. Optical Lens Optical Lens Overview The optical lens is designed in order to create a lens made up of elementary pillows or prisms. These elements are laid on a freeform support according to a rectangular grid, and shaped with parameters specified by the user. Pillow lens Prism lens Creating an Optical Lens An optical lens must be created in a body because it is a solid (not a surface). 1. Click Optical Lens (Optical Shape Design). 2. Set the parameters see page 28 for each tab. 3. Click OK. Features Page 27 of 88

28 The optical lens component is added to the specification tree. Parameters of an Optical Lens Lens Source Punctual Select a point giving the position of the source. This parameter is used to calculate the pillows/prisms according to the specifications. Extended Select a surface giving the emitting surface of the extended source. In practical, this parameter can be the external surface of a filament, a cylinder, a LED's chip, or any other surface. Cylinder - P21W Chip - Luxeon Rebel PL01 This parameter is required to display the source images. Support Freeform The support of the pillows/prisms is a freeform surface. Select the surface encompassing the exterior face of the lens for Support. Page 28 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

29 The freeform support is depicted in green - The pillows are laid on this surface The elementary elements are always laid source-side of the support. The support is depicted in green - The face of the support carrying the pillows depends on the source position Thickness Type a value for the length used to define an intermediary surface carrying the elementary elements. The freeform support is depicted in green and the intermediary surface in beige - Here the thickess is 2mm This intermediary surface is created by using the CATIA's offset command with a value Thickness on the Support. With Pillow type, the four corners of each external face of the pillows belong to the intermediary surface. With Prism type, at least one corner of the external face of the prism belong to the intermediary surface. Features Page 29 of 88

30 The support is depicted in green and the surface with the offset in beige - On the left, the four edges of the pillows belong to the surface with the offset - On the right, at least one corner of the prisms belong to the surface with the offset Index Type a value for the refractive index of the lens. Grid The grid determines: The size of the lens/elementary elements (Definition) The distribution of elementary elements within the lens (Type) Rectangular All the dimensions are defined on a plane normal to Axis and not on the support itself. The origin is optional. By default, it is the projection of the source point on the support in the direction of Axis. Surface Size & Element Count Type a value for: X Start, X End, Y Start, Y End: size of the surface X Count, Y Count: number of facets Surface Size & Element Sizes Type a value for: X Start, X End, Y Start, Y End: size of the surface X Size, Y Size: size of the facets Page 30 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

31 Target Two ways are available to create the lens: either by using intensity or illuminance values. This parameter impacts two things on the Prism tab: The definition of the target viewer Some parameters used to shape the elementary elements Intensity The target viewer displays pieces of information being intensity values. This is useful when the area to light is defined angularly. Select the parameters: Axis Orientation Intensity target is not available yet. Illuminance The target viewer displays pieces of information being illuminance values. This is useful when the area to light is a rectangle located at a known distance from the source. Select the parameters: Origin Axis Orientation All the dimensions are defined on a plane normal to Axis and not on the support itself. The origin is optional. By default, it is the projection of the source point on the support in the direction of Axis. Origin Select a point driving the origin of the grid and being the origin of the target viewer. Features Page 31 of 88

32 The real origin of the grid is the projection of Origin on a plane normal to Axis. Axis Select a line driving the plane of the grid. The grid is considered normal to Axis. X direction can be changed by clicking Reverse Direction. In this case, X Start and X End are interchanged. Initial orientation on the left - Reverse Direction for Axis on the right - Axis is depicted in green and Orientation in purple The concavity/convexity of the pillows is indirectly changed by reversing Axis direction. The support is depicted in green - Convex pillows on the left - Concave pillows on the right Orientation Select a line driving X for the grid. Y is automatically defined as perpendicular to X. When clicking Reverse Direction, both X and Y directions are changed. In this case, X Start and X End are interchanged, and Y Start and Y End are too. Page 32 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

33 Initial orientation on the left - Reverse Direction for Orientation on the right - Axis is depicted in green and Orientation in purple Use Support Axis parameter can be unticked in order to select a custom axis system for the target. By default, the target axis of the support is used for the target (ticked case). Prism Pillow Type a value for X Radius and Y Radius. X Radius and Y Radius are the radii of curvature of the arcs of circle used to generate the pillows. Features Page 33 of 88

34 A click on the output face of a pillow displays its beam pattern (yellow) and its source images (yellow). Note that on this current version of the feature, a single group of pillows exists, and thus all the pillows have the same specification. The concavity/convexity of the pillows can be changed by clicking Reverse direction. Influence of the Reverse direction button - Convex pillows on the left - Concave pillows on the right Prism Illuminance Target Type a value for X Position and Y Position. X Position and Y Position are the coordinates of the point targeted by the prism on the plane defined by Axis System. Intensity Target Type a value for X Angle and Y Angle. X Angle and Y Angle are the angular values defining the angular direction targeted by the prism and depending of Axis System. Page 34 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

35 A click on the output face of a prism displays its target specification (magenta), its beam pattern (yellow) and its source images (yellow). Note that on this current version of the feature, a single group of prisms exists, and thus all the prisms have the same specification. Properties The Properties panel gathers some display options customizing the viewer. These options make easier the design process and provide a better understanding of the lens behavior. To reach it, right-click inside the viewer and click Properties. Source Images This property is only available when the source has been defined as extended. With this functionality, you can display some images of the source given by the selected pillow(s)/prism(s). These images give us information on the lens behavior inside the target. Source Images with X Samples = 4 and Y Samples = 3 The source images are depicted as yellow polygons bordered by red lines. The external face of the pillow is discretized according to X Samples and Y Samples giving particular points. Features Page 35 of 88

36 The image of the extended source is then calculated for each of these particular points using the Snell's law. The source images are approximated because of the tessellation and the extended source convex hull considered for the calculation. When the Display boolean parameter is defined to true, the source images are displayed. Type a value for: X Samples: number of source images along the viewer's abscissa Y Samples: number of source images along the viewer's ordinate X and Y directions depend on Axis and orientation defined in the Target tab. Beam Pattern With this functionality, you can display the UV lines of the beam pattern for the selected prism(s). These UV lines give us information on the shape of the beam pattern. Beam Pattern with X Samples = 4 and Y Samples = 3 The UV lines are depicted as a network of yellow lines. The external face of the prism is discretized according to X Samples and Y Samples giving a particular network of lines on this face. The refraction of this network of lines by the prism is carried out using the Snell's law from the source point. The calculation of the beam pattern is calculated considering a punctual source. If an extended source is used, the barycenter of the extended source is considered as the punctual source. When the Display boolean parameter is defined to true, the UV lines are displayed. Type a value for: X Samples: number of UV lines along the viewer's abscissa Y Samples: number of UV lines along the viewer's ordinate X and Y directions depend on Axis and orientation defined in the Target tab. Grid WIth this functionality, you can display a grid inside the viewer. This grid gives us information on the position of the target specification, on the size of the source images and on the size of the beam pattern. Page 36 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

37 Grid with X Step = 5deg and Y Step = 5deg The grid is depicted in a dark-colored green network of lines with a scaling. This grid can be defined in intensity (cd) or in illuminance (lux) depending on the target type defined in the Target tab. When the Display boolean parameter is defined true, the grid is displayed. Type a value for: X Step: step of the grid along the viewer's abscissa Y Step: step of the grid along the viewer's ordinate X and Y directions depend on Axis and orientation defined in the Reflector tab. Note that the cursor position is displayed in white on the bottom left of the viewer. Light Guide Light Guide Overview The light guide is designed in order to have a pipe guiding the light while extracting a ratio of this light in a specific direction using some prisms. Light guide Prisms of a light guide Features Page 37 of 88

38 Creating a Light Guide A light guide must be created in a body because it is a solid (not a surface). 1. Click Light Guide (Optical Shape Design). 2. Set the parameters for each tab. 3. Click OK. The light guide component is added to the specification tree. Parameters of a Light Guide Body Body Type None The body of the light guide is not created. The prisms are alone. The height of the prisms is defined in such a way to reach the guide curve. Constant Profile The body of the light guide is created using a profile. Select a sketch as body profile for the light guide body. Light guide profile The profile is swept along the guide curve to obtain the light guide body. Guide Curve Select a curve as guide curve for the light guide body. Reverse direction can be used to select on which extremity of the guide curve the source is located. The position of the source impacts the following parameters from the Prisms tab: Start, End and Length. Light guide guide curve The profile is swept along the guide curve to obtain the light guide body. Optical Axis Select a line giving the direction of the optical axis. Page 38 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

39 Light guide optical axis The optical axis is the main direction in which you expect the light to be extracted from the light guide body by the prisms. Prisms Shape Flat Each prism is made of planar faces and all its edges are sharp. Distances Mode Curvilinear The distances related to the prisms are defined using the guide curve. These parameters are curvilinear distances based on this curve: Start, End and Length. Projection The distances related to the prisms are defined using a projection plane. This plane is used to define these distances: Start, End and Length. These distances are defined as curvilinear distances based on the guide curve projected onto the projection plane. Select a line to define the plane of projection (plane normal to Projection line). With this model, you can obtain style effects as a constant prism length when the light guide is seen in a specific direction. Features Page 39 of 88

40 Start Type a value to set the size of the prism-free zone at the beginning of the guide curve. The beginning of the guide curve is the extremity where the source is located. Prism-free zone in magenta - Guide curve in green - Start measure in green The way used to define this parameter depends on Mode. End Type a value to set the size of the prism-free zone at the end of the guide curve. The end of the guide curve is the extremity where the source is not located. Prism-free zone in magenta - Guide curve in green - End measure in green The way used to define this parameter depends on Mode. Length Basic Type a value for the length of the prisms. The way used to define this parameter depends on Mode. Page 40 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

41 Offset Basic Type a value for the offset of the prisms. Width Basic Type a value for the width of the prisms. Start Angle Basic Type a value for the start angle of the prisms. The start angle is the angle being source side. End Angle Basic Type a value for the end angle of the prisms. The end angle is the angle not being source side. Features Page 41 of 88

42 Orientation Normal All the prisms are oriented normally to the guide curve inside the plane normal to the optical axis. Page 42 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

43 TUTORIALS Creating a Smooth Reflector You must have CATIA R19, with the S_SV5_OSD solution. 5 minutes You are going to create a smooth reflector for headlamp using a parabolic surface. First, dimensioning of the parabolic surface is carried out. Then, the surface is split according to a specific profile. Finally, the reflector is pierced in order to be able to receive a light bulb. 1. Copy and extract SV5_Tutorials_SmoothReflector_R19V11.zip ( 1.zip) in a local directory. 2. Launch SPEOS CAA V5 Based and open the SmoothReflector.CATPart file. 3. Click Parabolic Surface (Optical Shape Design). The Parabolic Surface Definition dialog box appears. 4. Set the following parameters: PARAMETER Type Focus Axis Orientation Focal Size Focal Inputs/Focus Inputs/Axis Inputs/Orientation 30mm 200mm Focus, Axis and Orientation can be selected with a click from the specification tree or the 3D view. 5. Click OK. The parabolic surface is added to the specification tree. 6. Click Projection. Tutorials Page 43 of 88

44 The Projection Definition dialog box appears. 7. Select the Along a direction type. 8. Select Cut Profile and Hole Profile as Projected. Click to select several elements for Projected. 9. Select Parabolic Surface as Support. 10. Select Axis as Direction. 11. Check that Nearest solution is ticked. 12. Click OK. You have now some contours to split the surface: 13. Define as work object the geometrical set Output. 14. Click Split. The Split Definition dialog box appears. 15. Select Parabolic Surface as Element to cut. 16. Select the results of the projection as Cutting elements. If the wrong side of the cutting element is deleted, click Other side to switch it. 17. Click OK. The following surface is obtained: 18. Change Focal to 15mm. This can be done from the specification tree or the definition dialog box. Page 44 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

45 The surface is automatically updated: Note that the commands Projection and Split have been automatically updated. That is also the case for the other CATIA V5's commands. Creating a Faceted Reflector You must have CATIA R19, with the S_SV5_OSD solution. 15 minutes You are going to create a faceted reflector for taillamp using several optical surfaces with different focal lengths. Lesson 1: Creating the Reflector On this lesson, creation of the optical surfaces is carried out. Then, these surfaces are sewed and merged in a single surface, and split according to specified geometrical elements. 1. Copy and extract SV5_Tutorials_FacetedReflector_R19V11.zip ( 1.zip) in a local directory. 2. Duplicate the FacetedReflector.CATPart file and rename it into FacetedReflector_Optics.CATPart. This new file is used all along this lesson to make the optical part of the reflector design. 3. Launch SPEOS CAA V5 Based and open the FacetedReflector_Optics.CATPart file. 4. Click Optical Surface (Optical Shape Design). The Optical Surface Definition dialog box appears. 5. Set the following parameters: 1. Reflector tab PARAMETER Source Type Source Definition Support Type Support Axis Punctual Inputs/Source Point Parabolic Surface Inputs/Optical Axis Tutorials Page 45 of 88

46 Support Orientation Inputs/Orientation Grid Type Rectangular Grid Definition Surface Size & Element Count X Start -60mm X End 0mm Y Start -40mm Y End 40mm X Count 6 Y Count 8 2. Pillow tab PARAMETER Type Freeform X End 25deg X Start -25deg Y End 10deg Y Start -10deg Focal 30mm X Center 0deg Y Center 0deg 6. Click OK. The surface is created and appears on the 3D view and on the specification tree. Feel free to temporarily hide the geometrical set Inputs in order to better see the added elements. To do so, select the geometrical set to hide, and click Hide/Show. 7. Create three other optical surfaces. For each one, repeat steps 4 to 6 with the following parameters: Second optical surface: 1. Reflector tab PARAMETER Source Type Punctual Page 46 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

47 Source Definition Inputs/Source Point Support Type Parabolic Surface Support Axis Inputs/Optical Axis Support Orientation Inputs/Orientation Grid Type Rectangular Grid Definition Surface Size & Element Count X Start 0mm X End 20mm Y Start -40mm Y End 40mm X Count 2 Y Count 8 2. Pillow tab PARAMETER Type X End X Start Y End Y Start Focal X Center Y Center Freeform 25deg -25deg 10deg -10deg 28mm 0deg 0deg Third optical surface: 1. Reflector tab PARAMETER Source Type Source Definition Support Type Punctual Inputs/Source Point Parabolic Surface Tutorials Page 47 of 88

48 Support Axis Inputs/Optical Axis Support Orientation Inputs/Orientation Grid Type Rectangular Grid Definition Surface Size & Element Count X Start 20mm X End 40mm Y Start -40mm Y End 40mm X Count 2 Y Count 8 2. Pillow tab PARAMETER Type X End X Start Y End Y Start Focal X Center Y Center Freeform 25deg -25deg 10deg -10deg 26mm 0deg 0deg Fourth optical surface: 1. Reflector tab PARAMETER Source Type Source Definition Support Type Support Axis Support Orientation Punctual Inputs/Source Point Parabolic Surface Inputs/Optical Axis Inputs/Orientation Page 48 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

49 Grid Type Rectangular Grid Definition Surface Size & Element Count X Start 40mm X End 60mm Y Start -40mm Y End 40mm X Count 2 Y Count 8 2. Pillow tab PARAMETER Type X End X Start Y End Y Start Focal X Center Y Center Freeform 25deg -25deg 10deg -10deg 24mm 0deg 0deg The four optical surfaces are now created but there is some gaps between them. This is due to the Focal values which differ from one optical surface to another. Tutorials Page 49 of 88

50 To fix this, you are going to fill the gaps and then merge all the resulting surfaces. 8. Click Boundary. The Boundary dialog box appears. 9. Select the first optical surface from the geometrical set Build as Surface Edge. 10. Select the top right corner from the 3D view as Limit Repeat the operation with the top left corner to obtain Limit2. Check that the boundary is well the right edge of the surface as expected, and not the complementary part of the contour. To switch it, click one of the red arrows on the right corners. The boundary is displayed in green on the 3D view: Page 50 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

51 12. Click OK. Tutorials Page 51 of 88

52 The boundary is created. 13. Repeat the operation to define the left edge of the second optical surface. This edge is the second boundary used to make the first sewing. 14. Click Blend. The Blend dialog box appears. 15. Select respectively the first and the second Boundaries from the Build geometrical set as First Curve and Second Curve. 16. Click OK. Page 52 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

53 The blend is created and the gap has been filled. 17. Let us repeat two times the steps 8 to 16 in order to fill the two remaining gaps. Once that all the gaps have been filled, the following surface is obtained. You want to merge all the surfaces into a single reflector. 18. Click Join. The Join dialog box appears. 19. Select the four optical surfaces and the three blends from the Build geometrical set as Elements To Join. Tutorials Page 53 of 88

54 20. Click OK. You want to split the reflector according to a profile to make a circular hole in it. 21. Click Split. The Split dialog box appears. 22. Select Join from the Build geometrical set as Element To Cut. 23. Select Reflector Profile Cutting Surface and Reflector Hole Cutting Surface from the Inputs geometrical set as Cutting Elements. Use the Other Side button after having selected a Cutting Element in order to choose the right part of the reflector to remove. Click OK. You want to create the sides surface of the reflector shell. 24. Click Split. The Split dialog box appears. 25. Select Reflector Profile Cutting Surface from the Inputs geometrical set as Element To Cut. 26. Select Skin Cutting Surface and Join respectively from the Inputs and Build geometrical sets as Cutting Elements. 27. Click OK. Page 54 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

55 You want to merge the reflector and the sides surface of the reflector shell in a single surface. 28. Define as work object the geometrical set Output. 29. Click Join. The Join dialog box appears. 30. Select the two Split from the Build geometrical set as Elements To Join. 31. Click OK. Tutorials Page 55 of 88

56 The following surface is obtained: 32. Rename the last Join into Reflector. Lesson 2: Exchanging the Geometry On this lesson, an export of the designed reflector is done allowing the mechanical designer to open the created geometry without any specific SPEOS CAA V5 Based license. 1. Rename the file FacetedReflector.CATPart into FacetedReflector_Mechanics.CATPart. This file receives the exported geometry and is be used after the export to make the mechanical part of the reflector design. 2. Open both FacetedReflector_Optics.CATPart and FacetedReflector_Mechanics.CATPart files in SPEOS CAA V5 Based. 3. In the FacetedReflector_Optics.CATPart file, right-click on Reflector from the geometrical set Output and click Copy. 4. In the FacetedReflector_Mechanics.CATPart file, right-click on the Output geometrical set and select Paste Special. The Paste Special dialog box appears. 5. Select As Result With Link. Page 56 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

57 6. Click OK. 7. Save the modified file and close SPEOS CAA V5 Based. 8. Open the FacetedReflector_Mechanics.CATPart file in CATIA V5 without SPEOS. At this point, notice that the geometry of the reflector has been exported for the mechanical designer and can be opened without any SPEOS CAA V5 Based license. Let us say now that a modification is carried out by the optical designer after the design, the mechanical designer has to send back his file to the optical designer. Then, the optical designer is going to update the exported geometry and send it back to the optical designer. 9. Open again both FacetedReflector_Optics.CATPart and FacetedReflector_Mechanics.CATPart files in SPEOS CAA V5 Based. 10. In the FacetedReflector_Optics.CATPart file, set Focal to 35mm for the first optical surface and save the file. In the file FacetedReflector_Mechanics.CATPart, notice that Surface.1 icon has changed (red cross) because it needs an update. 11. Right-click on Surface.1 and select Local Update. The geometry is updated: Tutorials Page 57 of 88

58 12. Save the files and close SPEOS CAA V5 Based. The optical designer has now made the changes and the file can be opened again by the mechanical designer. Page 58 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

59 13. Launch CATIA V5 without SPEOS and open the file FacetedReflector_Mechanics.CATPart. Notice that the modification has well be made to the reflector, even when opening the file in CATIA V5 without SPEOS. Creating a LED Lens You must have CATIA R19, with the S_SV5_OSD solution and S_SV5_LM2 or S_SV5_LM3 or S_SV5_LM4 solution. 10 minutes You are going to create a LED lens with a lens array using a near field lens and an optical surface. Lesson 1: Creating the Near Field Lens On this lesson, creation and setting of the near field lens is be carried out. 1. Copy and extract SV5_Tutorials_LED_Lens_R19V12.zip ( in a local directory. 2. Launch SPEOS CAA V5 Based and open the LED_Lens.CATProduct file. 3. Change the value of the Split Boolean parameter located inside the product s set of parameter from false to true. This temporarily splits the half of both the crankcase and the printed circuit board to better set the near field lens. 4. Double-click on the Near Field Lens part from the specification tree to activate it. 5. Right-click on the Near Field Lens body and select Define In Work Object. Tutorials Page 59 of 88

60 The near field lens is created in a body because it is a solid (not a surface). 6. Click Near Field Lens (Optical Shape Design). The Near Field Lens Definition box appears. 7. Set the following parameters: PARAMETER Type Source Support Plane Input Radius Depth Draft Angle Support Thickness Output Radius Near Field Lens part/inputs/source Near Field Lens part/inputs/support Plane 4mm 3mm 5deg 5mm Index 1.49 Output Radius 8. Click OK. 20mm The feature is created and appears in the 3D view and on the specification tree. A Plexiglass material with appropriate Optical Properties has ever been applied. 9. Now that the near field lens is correctly positioned, set back the value of the Split Boolean parameter to false. The geometries having been set back to normal, all is now ready for the simulation stage. Lesson 2: Running Interactive and Direct Simulations On this lesson, an interactive simulation is made to check the optical behavior of the lens, and intensity sensors are used to characterize the output light beam. Page 60 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

61 1. Double-click on the interactive simulation named LM1 from the SPEOS specification tree. 2. Click the Geometries field. 3. Click the Near Field Lens body from the specification tree (Near Field Lens part). 4. Click OK. The near field lens is now taken into account by LM1. 5. Right-click on the LM1 interactive simulation and select Hide/Show to display the ray tracing in the 3D view. The light coming from the source point is well collimated after having passed through the near field lens. 6. Repeat step 5 to hide the ray tracing. 7. Repeat steps 1 to 4 with the LM2.WithNFL direct simulation. The near field lens is now taken into account by LM2.WithNFL. The simulation parameters (tessellation) and the sensors parameters (sampling) have ever been defined. 8. Select both LM2.WithoutNFL and LM2.WithNFL direct simulations from the SPEOS specification tree. 9. Click Local Update. The direct simulations are running. It should take a few minutes for each simulation. Tutorials Page 61 of 88

62 10. When the processing is complete, the results appear on the SPEOS specification tree under their respective direct simulation. The sensors used being intensity sensors, the simulation results are XMP files. 11. Right-click the direct simulation named LM2.WithoutNFL and select Hide/Show in order to unhide the simulation result in the 3D view. The simulation result is hiding the geometry. Let us make it transparent. 12. Right-click the XMP file from the direct simulation named LM2.WithoutNFL and click Properties. 13. Set the value 128 for Transparency by moving the slider. Page 62 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

63 14. Click OK. Both geometry and simulation result are now visible simultaneously. This can also be done using the Graphic Properties toolbar and setting the Opacity value to 50%. 15. Do the same to make all the other results transparent. 16. Open the XMP files named LED_Lens.LM2.WithoutNFL.Conoscopic90deg.xmp and LED_Lens.LM2.WithNFL.Conoscopic90deg.xmp. Without Near Field Lens With Near Field Lens You observe that the light is angularly more concentrated when the near field lens is used. Let us characterize in details the performance of this lens. Lesson 3: Measuring of Angular Aperture On this lesson, the beam angular aperture is evaluated using the Surface / Section tool. 1. Double-click the LED_Lens.LM2.WithNFL.Conoscopic5deg.xmp result from the SPEOS specification tree. The Extended Map is displayed. A smaller intensity sensor has been defined to use its whole area and thus optimize the angular aperture measurement. 2. Click Surface / Section. The Surface / Section dialog box appears. 3. Select User line as Section. The Section dialog box appears. Tutorials Page 63 of 88

64 4. Define a line passing by the center of the map and covering its whole area by dragging the line extremities. 5. The Section dialog box including the profile is displayed. Enlarge this dialog box by drag-and-dropping it from a corner to better visualize the maximum value. 6. Evaluate the FWHM value of the intensity profile. The Full Width at Half Maximum (FWHM ( of the intensity profile is the angular range defined with the extreme values of angles at which the intensity is equal to half its maximum value. A beam angular aperture of approximately 4 degrees should be found. Lesson 4: Measuring of Efficiency On this lesson, the efficiency of the lens is measured using SPEOS measures. 1. Click Measure (Light Modeling). 2. Select the LED_Lens.LM2.WithoutNFL.Conoscopic90deg.xmp result from the SPEOS specification tree. 3. Select Surface. 4. Set the other parameters as following: PARAMETER Phi Max Phi Min 360deg 0deg Page 64 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

65 Theta Max Theta Min 5. Click Preview. 6. Tick Flux. 7. Click OK. 90edg 0deg The Measures is added to the SPEOS specification tree. 8. Rename the Measure into Measure.WithoutNFL. 9. Repeat the steps 1 to 8 in order to create another measure from the LED_Lens.LM2.WithNFL.Conoscopic90deg.xmp result. 10. Rename the Measure into Measure.WithNFL. 11. Right-click on the Efficiency ratio parameter located inside the product s set of parameter. 12. Select Efficiency object and click Edit formula. The Formula Editor dialog box appears. 13. Enter `SPEOS CAA V5 Based\Measures\Measure.WithNFL\Flux` /`SPEOS CAA V5 Based\Measures\Measure.WithoutNFL\Flux` as Formula. The Measures outputs Flux can be retrieved from the SPEOS specification tree from the Formula Editor. 14. Click OK. The Efficiency parameter is calculated and its value is updated on the specification tree. An Efficiency of around 91 percent should be found, which means that there is less than ten percent of stray light on this system. If the simulation results change, the Measures need to be uploaded (if not done automatically) and the parameter is updated. Lesson 5: Adding the Lens Array On this lesson, a lens array is added on the output face of the lens using an optical surface. 1. Right-click the LM2.WithNFL direct simulation and select Hide/Show in order to hide the simulation result in the 3D view. 2. Double-click the Near Field Lens part. 3. Right-click the Lens Array geometrical set and select Define in Work Object. 4. Click Optical Surface (Optical Shape Design). The Optical Surface Definition box appears. 5. Set the following parameters: 1. Reflector tab PARAMETER Source Type Source Definition Support Type Punctual Inputs/Source Freeform Tutorials Page 65 of 88

66 Support Lens Array/OutputPlane Support Orientation Inputs/Orientation Grid Type Rectangular Grid Definition Surface Size & Element Count X Start -20mm X End 20mm Y Start -20mm Y End 20mm X Count 15 Y Count Target tab PARAMETER Type Axis Orientation 3. Pillow tab Intensity References/X References/Z PARAMETER Type Radii X Radius 5mm Y Radius 2.5mm 6. Click OK. The surface is created and appears on the 3D view and on the specification tree. 7. Right-click the Lens Array body and select Define in Work Object. 8. Reach the Mechanical Design Part Design workbench. 9. Click Pad. The Pad Definition box appears. Click More. 10. Set the following parameters: PARAMETER First Limit Type Dimension Page 66 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

67 Length Profile/Surface Selection Direction Reference Second Limit Type Second Limit Limit 0mm Select the external face of the near field lens from the 3D view References/X Up to surface Lens Array/Optical Surface.1 A Plexiglass material with appropriate Optical Properties has ever been applied. 11. Right-click the Lens Array geometrical set and select Hide/Show in order to hide the optical surface. The LED lens is now complete. Lesson 6: Analyzing the Influence of the Lens Array On this lesson, the influence of the lens array is studied and compared to the initial version of the lens. 1. Double-click on the direct simulation named LM2.WithNFL&LensArray from the SPEOS specification tree. 2. Click the Geometries field. 3. Click the Near Field Lens and the Lens Array bodies (Near Field Lens part) from the specification tree. 4. Click OK. Both parts of the LED lens are now taken into account by LM2.WithNFL&LensArray. 5. Select the LM2.WithNFL&LensArray direct simulation from the SPEOS specification tree. 6. Click Local Update. The direct simulation is running. It should take a few minutes. Tutorials Page 67 of 88

68 7. Open the XMP result of the LM2.WithNFL&LensArray simulation by double-clicking it on the specification tree. You have the shape of the output beam but no marks to measure its size. Let us add some grading. 8. Right-click on the result and select Show ruler. 9. Right-click on the result and select Show primary grid. 10. Right-click on the result and select Grid Parameters. 11. Select User and set 5deg for both x and y primary steps. The size of the beam can now be approximated: 40deg horizontally and 20deg vertically. 12. Click Save in Virtual Photometric Lab to takes into account the modifications of the display parameters. 13. Repeat the steps 7 to 12 with the LED_Lens.LM2.WithNFL.XMeridianYParallel.xmp result. 14. Open simultaneously the LED_Lens.LM2.WithNFL.XMeridianYParallel.xmp and the LED_Lens.LM2.WithNFL&LensArray.XMeridianYParallel.xmp results. Both results can be compared to understand the influence of the lens array. LED Lens without Lens Array LED Lens with Lens Array Page 68 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

69 WIth the lens array, you can shape the output beam and to control its size depending on the parameters of the pillows. Creating a Light Guide You must have CATIA R19, with the S_SV5_OSD solution. 5 minutes You are going to create a light guide. 1. Copy and extract SV5_Tutorials_LightGuide_R19V13.zip ( in a local directory. 2. Launch SPEOS CAA V5 Based and open the LightGuide.CATPart file. 3. Right-click on the Light Guide body and select Define In Work Object. The light guide is created in a body because it is a solid (not a surface). 4. Click Light Guide (Optical Shape Design). The Light Guide Definition dialog box appears. 5. Set the following parameters: 1. Body tab PARAMETER Body Type Body Type Input Guide Curve Optical Axis 2. Prisms tab Constant Profile Inputs/Profile Inputs/Guide Curve Inputs/Optical Axis PARAMETER Shape Flat Distances/Mode Projection Distances/Mode/Input Inputs/Optical Axis Distances/Start 10mm Distances/End 5mm Distances/Length 1mm Offset 5mm Width 5mm Start Angle 87deg End Angle 10deg Orientation Normal 6. Click Preview. You notice that the prisms have not been set on the right side of the body guide. 7. Click Reverse Direction for Optical Axis. Now the prisms are correctly set. 8. Check that a Reverse Direction is not needed for Guide Curve. Tutorials Page 69 of 88

70 You are checking that the guide curve orientation is matching to the source position. To do so, set temporarily Start to null and watch which side is impacted by this change. This side is the side where the source is set and is linked to Start Angle. 9. Click OK. The feature is created and appears in the 3D view and on the specification tree. A Polycarbonate material with appropriate Optical Properties has ever been applied. Creating a High Beam Reflector You must have CATIA R19, with the S_SV5_OSD solution. 45 minutes You are going to create a European high beam reflector using some optical surface features. This reflector is based on the ECE R113 regulation (class E - primary). Then, you are going to measure the photometry and check that the regulation is passed. Lesson 1: Opening Project 1. Copy and extract SV5_Tutorials_ECEHighBeamReflector_R19V13.zip ( R19V13.zip) in a local directory. 2. Launch SPEOS CAA V5 Based. 3. Open the ECEHighBeamReflector.CATProduct file. Lesson 2: Creating the Reflector 1. Double-click the ECE High Beam Reflector part from CATIA's tree. 2. Right-click on the Segments geometrical set and select Define In Work Object. The optical surfaces are created in a geometrical set because they are surfaces (not solids). 3. Click Optical Surface (Optical Shape Design). The Optical Surface Definition dialog box appears. 4. Set the following parameters: 1. Reflector tab PARAMETER Source Type Source Definition Extended Inputs/Cylinder Page 70 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

71 Support Type Support Axis Support Orientation Grid Type Grid Definition X Start X End Y Start Y End X Count 1 Y Count 1 2. Pillow tab PARAMETER Type X Start X End Y Start Y End Focal X Center Y Center 5. Click OK. Parabolic Surface Inputs/Optical Axis Inputs/Orientation Rectangular Surface Size & Element Count -60mm -45mm 0mm 60mm Freeform -3deg 3deg -1deg 1deg 22mm 0deg 0deg The first segment is created and appears on the 3D view and on the specification tree. Tutorials Page 71 of 88

72 6. Create the 15 other segments by repeating steps 4 to 6 in order to have a rectangular grid such as below. An optical surface has to be created for each segment because groups management is not yet supported. A way to save time is to copy/paste an ever-defined optical surface and change its parameters afterwards. The position of the segments has to be changed using the X Start, X End, Y Start and Y End parameters from the Reflector tab using the dimensions on the picture below. The beam specification for each segment has to follow the color code on the picture above with the next values for the Pillow tab. 1. Green segments PARAMETER X Start X End Y Start Y End 2. Blue segments PARAMETER X Start X End Y Start Y End -3deg 3deg -1deg 1deg -6deg 6deg -2deg 2deg 3. Orange segments PARAMETER X Start X End Y Start -9deg 9deg -3deg Page 72 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

73 Y End 3deg 4. Magenta segments PARAMETER X Start -12deg X End 12deg Y Start -4deg Y End 4deg All the segments of the reflector have been created. Lesson 3: Cutting the Reflector 1. Right-click on the Reflector geometrical set and select Define In Work Object. 2. Click Join (Operations). 3. For the Elements To Join parameter, select all the optical surfaces features inside the Segments geometrical set by clicking them from CATIA's tree. 4. Untick Check connexity. 5. Click OK. 6. Click Split (Operations). 7. Unhide Bulb Hole Cutting Cylinder and Reflector Cut Cutting Cylinder features from the Inputs geometrical set. 8. For the Elements to cut parameter, select the Join feature inside the Reflector geometrical set by clicking it from CATIA's tree. 9. For the Cutting elements parameter, select the Bulb Hole Cutting Cylinder feature inside the Inputs geometrical set by clicking it from CATIA's tree. If a warning saying "Split or Trim operator: Warning : Some cells position is ambiguous. Use Keep/Remove option or modify input bodies contact." appears, click Close. Tutorials Page 73 of 88

74 Notice that the right side of the reflector has been deleted. 10. Repeat the steps 9 to 10 in order to add the Reflector Cut Cutting Cylinder feature into the Cutting elements parameter. If a warning saying "Split or Trim operator: Warning : Some cells position is ambiguous. Use Keep/Remove option or modify input bodies contact." appears, click Close. This time, notice that the wrong side of the reflector has been deleted. 11. Click Other side. If a warning saying "Split or Trim operator: Warning : Some cells position is ambiguous. Use Keep/Remove option or modify input bodies contact." appears, click Close. 12. Click OK. A Multi-Result Management dialog box appears. 13. Tick keep all the sub-elements. 14. Click OK. The reflector is finally cut to host the bulb and has the right external profile. Page 74 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

75 Lesson 4: Applying Material to the Reflector 1. Select the Split feature inside the Reflector geometrical set. 2. Click Apply Material (Optical Properties). 3. From the Library dialog box, in the Other tab, select the Mirror material. 4. Click OK. The material appears in CATIA's tree, under the Split feature. Lesson 5: Adding Optical Properties to Materials 1. From CATIA's tree, right-click Mirror, and then select Properties. 2. Click More... to edit the Optical Properties tab. If a warning saying "New applicative properties have been added and will be saved with the current material" appears, click OK. 3. In the Volume optical properties (VOP) group box, select Opaque from the Type list. 4. In the Surface optical properties (SOP) group box, select Mirror from the Type list. 5. In the Surface optical properties (SOP) group box, set 80% for Reflectance. 6. Click OK. Lesson 6: Creating an Intensity Sensor 1. Double-click the Tutorials > ECE High Beam Reflector product from CATIA's tree. 2. Click Start, Analysis & Simulation, Light Modeling if the Light Modeling workbench is not yet launched. 3. Click Intensity Sensor (Sensor). 4. Set the following parameters: PARAMETER Type Axis System/Origin Axis System/X Direction Photometric Sensor/Sensor Origin Sensor/Sensor X Axis System/Y Direction Sensor/Sensor Y X/Start / X/End 18deg X/Sampling 720 Tutorials Page 75 of 88

76 PARAMETER X/Mirrored Extent true Y/Start / Y/End 8deg Y/Sampling 320 Y/Mirrored Extent true Orientation X As Meridian, Y As Parallel 5. Click More>>. 6. Choose Face for Data separated by layer. 7. Make the Segments geometrical set hidden and the Reflector geometrical set visible. 8. Select each split segments for the Face filtering parameter by clicking them from the 3D view. 9. Click OK. The irradiance sensor appears in the specification tree and in the 3D view. Lesson 7: Creating a Direct Simulation 1. Click Direct Simulation (Simulations). 2. In the Sources box, select the H7 H8 H9 H11.Source source from the Lib_H9-12V - 65W product. 3. In the Geometries box, select the Split feature from the Reflector geometrical set. 4. In the Sensors box, select the intensity sensor named Intensity sensor.1 from the CATIA's tree. 5. Type 2e8 for Number of rays. 6. In the Geometries box, click on the Split feature. 7. Tick Preview meshing. The tessellation of the reflector is displayed. Page 76 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

77 We notice that the meshes are too according to the size of the segments. 8. Click OK. The direct simulation appears in the specification tree. 9. Right-click on Direct simulation Click Properties. 11. Click More Go to the Simulation tab. 13. Set Tessellation step mode to Fixed. 14. Set Tessellation step value to 3mm. 15. Repeat steps 6 to 8 to check the tessellation of the reflector again. We notice now that the meshes are fine enough according to the size of the segments. Lesson 8: Running the Direct Simulation 1. Select Direct simulation.1 from the specification tree. 2. Click Local Update (Update). The simulation is running. It longs approximatively 2 hours on a Intel Xeon E5620 2,40Ghz (2 processors). Tutorials Page 77 of 88

78 3. When the simulation is done, the result appears in the 3D view. 4. Expand the Direct simulation.1 node to access to the simulation results from CATIA's tree. 5. Double-click ECEHighBeamReflector.Direct simulation.1.intensity sensor.1.xmp from the CATIA's tree. 6. Click. 7. Tick IsoCurve. 8. Click Save. 9. Close Virtual Photometric Lab. Page 78 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

79 Lesson 9: Creating Measures 1. Click Measure (Light Modeling). 2. Select the result of the direct simulation from the SPEOS specification tree. 3. Set the parameters as following: PARAMETER Type Point Inputs/X 0deg Inputs/Y 0deg Outputs Value Once that the type has been selected, click Preview to make the Outputs appear. 4. Click OK. The Measures is added to the SPEOS specification tree. 5. Rename the Measure into I_HV. 6. Repeat the steps 1 to 5 to create the other measures with the following parameters: 1. I_H-3R PARAMETER Type Inputs/X Inputs/Y Outputs 2. I_H-3L PARAMETER Type Inputs/X Inputs/Y Outputs 3. I_H-6R PARAMETER Type Inputs/X Inputs/Y Outputs 4. I_H-6L PARAMETER Type Inputs/X Inputs/Y Outputs Point 3deg 0deg Value Point -3deg 0deg Value Point 6deg 0deg Value Point -6deg 0deg Value Tutorials Page 79 of 88

80 5. I_H-9R PARAMETER Type Inputs/X Inputs/Y Outputs 6. I_H-9L PARAMETER Type Inputs/X Inputs/Y Outputs 7. I_H-12R PARAMETER Type Inputs/X Inputs/Y Outputs 8. I_H-12L PARAMETER Type Inputs/X Inputs/Y Outputs 9. I_2U-V PARAMETER Type Inputs/X Inputs/Y Outputs 10. I_4D-V PARAMETER Type Inputs/X Inputs/Y Outputs 11. I_max PARAMETER Type Point 9deg 0deg Value Point -9deg 0deg Value Point 12deg 0deg Value Point -12deg 0deg Value Point 0deg 2deg Value Point 0deg -4deg Value Surface/Rectang le Page 80 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide

81 Center X Center Y Height Width Outputs 0deg 0deg 40deg 80deg Max All the measures have been created. Each one can be expanded from CATIA's tree to reveal its outputs values. Lesson 10: Checking the Regulation 1. Click Start, Knowledgeware, Knowledge Advisor. 2. Click Check (Reactive features). 3. Type I_HV as Name of Check. 4. Click OK. Tutorials Page 81 of 88

82 5. Type (`SPEOS CAA V5 Based\Measures\I_HV\Value`>= 0.8*`SPEOS CAA V5 Based\Measures\I_max\Max` )and (`SPEOS CAA V5 Based\Measures\I_HV\Value`>= 37500cd ) as condition to check. 6. Click OK. 7. Repeat the steps 2 to 6 with the following parameters for the other checks: 1. I_H-3R PARAMETER Condition 2. I_H-3L PARAMETER Condition 3. I_H-6R PARAMETER Condition 4. I_H-6L PARAMETER Condition 5. I_H-9R PARAMETER Condition 6. I_H-9L Page 82 of 88 `SPEOS CAA V5 Based\Measures\I_H-3R\Value` >= 18776cd `SPEOS CAA V5 Based\Measures\I_H-3L\Value` >= 18776cd `SPEOS CAA V5 Based\Measures\I_H-6R\Value` >= 6284cd `SPEOS CAA V5 Based\Measures\I_H-6L\Value` >= 6284cd `SPEOS CAA V5 Based\Measures\I_H-9R\Value` >= 3797cd SPEOS CAA V5 Based Optical Shape Design User Guide

83 PARAMETER Condition 7. I_H-12R PARAMETER Condition 8. I_H-12L `SPEOS CAA V5 Based\Measures\I_H-9L\Value` >= 3797cd `SPEOS CAA V5 Based\Measures\I_H-12R\Value` >= 1278cd PARAMETER Condition `SPEOS CAA V5 Based\Measures\I_H-12L\Value` >= 1278cd 9. I_2U-V PARAMETER Condition 10. I_4D-V PARAMETER Condition 11. I_max `SPEOS CAA V5 Based\Measures\I_2U-V\Value` >=1876cd `SPEOS CAA V5 Based\Measures\I_4D-V\Value` <= `SPEOS CAA V5 Based\Measures\I_max\Max` PARAMETER Condition (`SPEOS CAA V5 Based\Measures\I_max\Max` <= cd) and (`SPEOS CAA V5 Based\Measures\I_max\Max`>= 43750cd ) 8. All the checks have been created and appears on CATIA's tree inside the Relations node. Note that they all appear in green meaning that the ECE R113 regulation is passed. Transferring Geometrical Data You must have CATIA R19, with the S_SV5_OSD solution. 5 minutes CATParts including some OSD features cannot be opened with CATIA V5 alone (without SPEOS). You are going to see how to bypass this limitation and be able to open and use such OSD features. For more details about OSD features opening and usability with CATIA V5 alone, you can view OSD Features see page 6. Tutorials Page 83 of 88

84 1. Copy and extract SV5_Tutorials_Geometrical_Data_Transfer_R19V12.zip ( fer_r19v12.zip) in a local directory. 2. Launch SPEOS CAA V5 Based and open the ParabolicSurface.CATPart file. Remember the icon of the parabolic surface (original OSD feature). 3. Click File. 4. Click Save As Select model for Save as type. 6. Click Save. You have exported the initial CATPart file in the model format. This temporary file is only used to achieve this tutorial. 7. Open the just created model file. 8. Right-click on the parabolic surface from the 3D view. 9. Select Copy. 10. Right-click on the Parabolic Surface geometrical set from the CATPart file. 11. Select Paste. You have imported the parabolic surface from the model file to the CATPart file. 12. Right-click on the Parabolic Surface feature from the Parabolic Surface geometrical set. 13. Click Delete. 14. Click OK. Notice that the icon of the feature has changed. This icon is used for geometry pasted without any links. 15. Click File. 16. Click Save. 17. Close SPEOS CAA V5 Based. 18. Launch CATIA V5 without SPEOS. 19. Open the ParabolicSurface.CATPart file. Notice that the file opens correctly and that the parabolic surface is fully usable. Page 84 of 88 SPEOS CAA V5 Based Optical Shape Design User Guide