OPTI 513R / Optical Testing
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1 OPTI 513R / Optical Testing Instructor: Dae Wook Kim Meinel Building Rm 633, University of Arizona, Tucson, AZ dkim@optics.arizona.edu Website: sites.google.com/site/opti513r/ Office Hours: for appointment Course Time: To be announced Prerequisites: OPTI 505 Course Description: Review of paraxial properties of optical systems; optical material qualification; optical aberrations; interferometry; distance/slope measuring optical sensors/instruments; deflectometry; measurement of surface shape, mid-spatial frequency error and micro roughness; testing concave/convex optics; testing of spherical surfaces and lenses; freeform/aspheric surface metrology; dynamic/instantaneous metrology. Learning Objectives: 1. Test/measure optical components and systems. 2. Evaluate optical system performance. 3. Explain basic interferometry, deflectometry, and optical sensors for optical testing. 4. Better specify optical components and systems. 5. Determine if an optics supplier can actually supply the optics you are ordering. 6. Design/produce higher-quality optical systems. Grading: 1. You will be given a mid-term exam and a final exam during the semester. (All exams will be in-class, closed book exams.) 2. The homework will be due by 12:00 noon on the date stated on each assignment sheet and it should be handed in to TA (Teaching Assistant). Credit will be reduced 25% for each day a homework assignment is late. 3. The final grade in the course will be calculated as follows: homework - 20%; mid-term exam - 30%; and final exam - 50%. Special Acknowledgement: The 513R course materials were originally prepared/created by Dr. James C. Wyant and generously handed over to Dr. Dae Wook Kim for the continuing educational mission.
2 Course References: 1. Optical Society of America Optics Infobase 2. SPIE Digital Library 3. D. Malacara, Ed. Optical Shop Testing, Third Edition 4. E. P. Goodwin and J. C. Wyant Field Guide to Interferometric Optical Testing 5. W. Smith Modern Optical Engineering Draft Outline: 1. Review of Paraxial Properties of Optical Systems 1.1 Thin Lenses Measurements Based on Image Equation Autocollimation Technique Geneva Gauge Neutralization Test Focometer 1.2 Thick Lenses Focal Collimator Reciprocal Magnification Nodal-Slide Lens Bench 2. Qualification of Optical Material 2.1 Internal Defects 2.2 Measurement of Refractive Index Spectrometer Basic Spectrometer Technique Autocollimating Goniometer Hilger Chance Refractometer Critical Angle Systems Abbe Refractometer Pulfrich Refractometer 2.3 Strain 2.4 Mechanical and Thermal Properties 3. Optical Aberrations 3.1 Sign Conventions 3.2 Aberration Free Image 3.3 Spherical Wavefront, Defocus, and Lateral Shift 3.4 Angular, Transverse, and Longitudinal Aberration 3.5 Seidel Aberrations Spherical Aberration Coma Astigmatism Field Curvature Distortion
3 3.6 Zernike Polynomials 3.7 Peak-Valley and RMS Wavefront Aberration 3.8 Strehl Ratio 3.9 Chromatic Aberrations 3.10 Aberrations Introduced by Plane Parallel Plates 3.11 Aberrations of Simple Thin Lenses 3.12 Conics Basic Properties Spherical Aberration Coma Astigmatism 3.13 General Aspheres/Freeform Surfaces 4. Interferometry for Optical Testing 4.1 Two Beam Interference 4.2 Pioneer Fizeau Interferometer 4.3 Twyman-Green Interferometer 4.4 Fizeau Interferometer Laser Source 4.5 Mach-Zehnder Interferometer 4.6 Typical Interferograms 4.7 Interferograms and Moiré Patterns 4.8 Classical techniques for inputting data into computer 4.9 Direct Phase Measurement Interferometry Phase-Stepping and Phase-Shifting Interferometry Phase Shifters Moving Mirror Diffraction Grating Bragg Cell Polarization Phase Shifters Rotating Half-Wave Plate Rotating polarizer in Circularly Polarized Beam Zeeman Laser Frequency Shifting Source Algorithms Phase-Unwrapping Phase Shifter Calibration 4.10 Vertical Scanning (Coherence Probe) Techniques 5. Distance/Slope Measuring Optical Sensors/Instruments 5.1 Distance Measuring Sensors 5.2 Laser Trackers 5.3 Scanning Pentaprism Test 6. Deflectometry for Optical Testing
4 6.1 Deflectometry Concept 6.2 Visible Deflectometry 6.3 IR Deflectometry 6.4 Deflectometry and Fringe Projection Technique 7. Measurement of Surface Quality/Micro Roughness 7.1 View transmitted or reflected light 7.2 Mechanical Probe Stylus Profilometry 7.3 AFM Atomic Force Microscope or SPM Scanning Probe Microscope 7.4 Lyot Test (Zernike Phase Contrast) 7.5 FECO Fringes of Equal Chromatic Order 7.6 Nomarski Interferometer - Differential Interference Contrast (DIC) 7.7 Interference Microscope 8. Testing Flat Surface Optical Components 8.1 Mirrors Fizeau Interferometer Twyman-Green Interferometer Ritchey-Common Test 8.2 Windows Interferometer Autocollimator 8.3 Prisms Interferometer Autocollimator 8.4 Corner Cubes 8.5 Diffraction Gratings 9. Testing of Curved Surfaces and/or Lenses 9.1 Radius of Curvature Spherometer Autostigmatic Measurement Newton's Rings 9.2 Surface Figure Test Plate Twyman-Green Interferometer (LUPI) Fizeau Interferometer (Laser source) Spherical Wave Multiple Beam Interferometer (SWIM) Shack Cube Interferometer Scatterplate Interferometer Smartt Point Diffraction Interferometer Sommargren Diffraction Interferometer Measurement of Cylindrical Surfaces Long-Wavelength Interferometry
5 Star Test Shack-Hartmann Test Foucault Knife-Edge Test Wire Test Ronchi Test Lateral Shear Interferometry Radial Shear Interferometry 10. Metrology for Aspherical/Freeform Surfaces 10.1 Aspheric Surfaces Conics Sag for Aspheres 10.2 Null Test Conventional Null Optics Computer Generated Holograms 10.3 Non-Null Test Deflectometry Scanning Pentaprism Test Lateral Shear Interferometry Radial Shear Interferometry High-Density Detector Arrays Sub-Nyquist Interferometry Long-Wavelength Interferometry Sub-aperture Stitching Interferograms 11. System Evaluation 11.1 Resolution Tests 11.2 Veiling Glare 11.3 Spread Function Measurement 11.4 Encircled Energy Measurement 11.5 Optical Transfer Function Measurement Scanning Methods Interferogram Analysis Autocorrelation Method
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