LucidShape Computer Aided Lighting Overview. Willi Brandenburg brandenburg gmbh

Transcription

1 LucidShape Computer Aided Lighting Overview Willi Brandenburg brandenburg gmbh

2 Overview Simulation LucidFunGeo Optic design Lit Appearance Optimizer Other Street lighting 2

3 Simulation Monte Carlo ray trace In core Multi Thread Spectral (color) simulation Accurate NURBS surface simulation Fast Simulation on triangle geometry Mix of fast triangle search & accurate NURBS intertsection Light Mapping Fast simulation for reflector design GPUtrace Extreme fast simulation on the graphic card Interactive ray path bundle Filament images Ray Trace Analysis 3

4 Spectral simulation User defined spectral properties Emitter s spectral power distribution Reflection Dispersion Absorption Raytrace Simulation over a spectral range Mix of monochrome and chromatic parts Results sensor results in N spectral channels Display results as RGB Chromatic aberration 4

5 PES color band analysis Chromatic aberration Shift +0.5 mm Nominal position Shift -0.5 mm Shift 1.0 mm 5

6 Glare light analysis Define a problem zone Find the cause in the reflector or lens 6

7 Libraries Reflection and Refraction models mathematical scattering models Ideal specular/refractive Lambertian, Gaussian, 3D [4D] BSDF data 2D BSDF Wizard fit curves 7

8 Spectral Media libraries Spectral dependent Emission reflection Dispersion Transmission /absorption 8

9 Volume Lightsource create a non surface light source, like a torus from gas discharge lamps Custom forms can be built by using those primitive geometries: cone, cylinder, sphere 9

10 Optic Design LucidFunGeo Functional Geometry in lighting: Several mathematical models Design by lighting function Genetic Algorithm GA optimizer Lighting design feature Concept of Applications All you need in a group of Dialogs Configuration and Model Gallery Predefined configuration, ready to load For all kind of lighting application 10

11 LucidFunGeo mathematics 3 methods: PS; Procedural Surfaces Surface is defined by sweep, extrusion, rotation, PCS; Poly Curve Systems Surface is defined by a skeleton of curves Used for PES Projector type reflector LED collimator MF; Macro Focal Free Form surfaces Surface for cutoff line and other pattern 11

12 PS Applications Procedural Surfaces Created by procedure: sweep, rotation, extrusion Easy to use Signal lamps, interior, headlamps 12

13 PS Extrusion Reflector extrusion along a curve profiles along extrusion curve edge light applications 13

14 PS Extrusion Lens extrusion along either a vector or a curve profiles also along extrusion curve Belt lens option 14

15 PCS Applications Poly Curve Systems Skinned Surface over Curve skeleton PES headlamps LED concentrators 15

16 MF Applications Macro Focal Surfaces Design of cutoff line & other pattern Flexible in spread definition Define reflector layout Use predefined base grids Includes Styling issues 16

17 MF Feasibility Check switch checker to normal mode set Size and Spread define light function get quick geometry and simulation result check feasibility 17

18 MF Grid Types classic as in old MF set grid Zones with different # facets Rectangle in 4 corner Polar round globe style grid select any Nurbs boundary curve grid 18

19 Model Gallery predefined models for a big number of applications 19

20 Design Feature high level design objects Parametric design Used for lighting geometry: reflector,lens, Each component an individual feature 20

21 LED multi module headlamp Hot spot by 3 PES units Wide spread with torus lens min= 0 flux= 205 lm; E max at[-0.7,-0.5]= 42.7 lx max= 42.7 [lx]

22 Lens Library Aspherical Fresnel Rectangle Variable rotational TIR fresnel Rotational, extruded, torus 22

23 Collimator front exit TIReflector front entry side entry LED source 23

24 Collimator Concentration of LED light Spread light direction asymmetric spread Round, extrusion, rectangle Direct beam shaping 1 st optic behind 2 nd reflector/lens Light pipe coupling in 24

25 LED extruded Collimator extrude collimator profile along curve edge light applications 25

26 Prism Band Band of prism Based on spine curve Controlled by light direction vector Variable prism angles

27 Dot Matrix FF surface with printed mask Variable pattern and structures 3D textures Used for curtain light 27

28 Real camera Virtual Camera Lit Appearance Photometrically calculated Lit Appearance is possible with a Luminance Camera Sensor optical part luminance image Luminance Camera Luminance Camera Sensor 28

29 Lit Appearance Luminance images of a PS reflector light obtained with the Luminance Camera 29

30 Lit Appearance Multiple Luminance Cameras: Panorama The panorama allows multiple angle views and captures the lit appearance from many points of view 30

31 Lit Appearance Navigate easily through the panorama light data Switching the views in a special navigation window 31

32 Lit Appearance Luminace Images from a flow sensor Interactive rotation of displayed lit appearance 32

33 Optimizer loop Simulation trigger result Design Feature create Optimizer rating set parameter Merit Objects Simulation Simulation get quality 33

34 Optimizer Genetic Algorithm GA Works on any design feature Individual parameter Merit Objects Have their own setup dialog Any number and combination Foreign optimizer could be plugged in 34

35 Ray Deviation Compensation Ray deviation causes Errors in beam pattern Destroys cutoff lines The neutral surface Compensates the ray deviation Creates a variable thickness Thickness map 35

36 Ray Deviation Analysis Checkerboard images Deviation diagrams Thickness map Simple offset Neutral surface 36

37 License plate Select license plate dot mask from a list of international regulation min=0 E max at[-6,75]=5840 lx max=5840 [lx]

38 Direct data transfer to CAD systems 38

39 Street Lighting - trend for LED lighting - New Regulations demands energy efficient lamps - Many automotive suppliers want to take part one-sided pole setting Street Lighting 39

40 Street Lighting only 2 parameters analyzed LID distribution [cd] [lx] sensor [cd] sensor angular distribution display of one single street light Street Lighting 40

41 Reverse engineering Take over measure Point Clouds Fit surface trough each facet 41

42 Reverse engineering II Define light source and Candela sensor Simulate and verify result 42

43 LucidRemote Distribute the raytrace job 43