Photopia

optical design using Photopia https://www.ltioptics.com

Transcript

1. For SOLIDWORKS and Rhino Optical Design Software
2. About Photopia Photopia is optic design software used by optical engineers to virtually prototype the performance of non-imaging optical systems before building physical prototypes. Photopia’s monte-carlo raytracing engine works inside of Solidworks or Rhino and is compatible with Inventor, Fusion, Catia, Creo, Pro/E and many other CAD softwares. https://www.ltioptics.com/
3. About LTI Optics LTI Optics is the company that creates and sells Photopia optical design software. We are a small company located in Westminster Colorado supporting our software around the entire globe. Members of our team have been working on Photopia and its predecessor since the 1990’s, continually improving and refining our raytracing and optical design engines. https://www.ltioptics.com/
4. Illumination – Light Guides – Optical Sensors Some of the range of optical systems you can design and model with Photopia.
5. Photopia for SOLIDWORKS
6. Photopia for SOLIDWORKS
7. Photopia for SOLIDWORKS
8. Photopia for Rhino
9. True Color Modeling in Photopia
10. Modeling Spatial Spectral Emission Properties of LEDs
11. Simulation Accuracy - LED Collimator Lens Photo of Actual Beam Image Photopia’s Simulated Beam Image
12. Parametric Free-Form Reflector Design Tools – Aiming & Weighting Factors
13. Parametric Free-Form Lens Design Tools Prismatic/Smooth, Profile Mapping, Aiming & Weighting
14. Parametric Lens Design Tools
15. UVC Irradiation Simulations of Optical Devices in Application Environments UVC LED device irradiating high touch areas of an ultrasound machine. UVC low pressure mercury lamp robot irradiating an exam room.
16. UVC Fluence Simulations of Air Particles in Duct Fluence rate grids placed along the air duct. The Total Fluence report computes the total integrated fluence over the duct cross section based on the user input air speed.
17. Designs for 3D Printed Reflectors from Photopia for Rhino & Grasshopper Fully parameterized Voronoi pattern holes applied to a PODT generated reflector using Grasshopper in Photopia for Rhino. Light pattern produced by reflector with diffuse white finish and RGB LEDs inside. Light is mixed in the beam center, but colors offset as they exit through holes in slightly different directions.
18. Chair Model Illuminated by Voronoi Cell Reflector Using Object Recorders in Photopia for Rhino Larger Voronoi reflector lighting up a chair in the corner of a room. Gray scale image showing the lux levels on the object. Chair design by Max Jongewaard.
19. Quantitative Photometric and Colorimetric Output Options False color plot showing the lux levels on the object. Delta u’v’ plot, showing color differences from the average color in the scene. Dark means the color at that point is close to the average, brighter green is further from the average. 0.001 in the uniform u’v’ color space is a just noticeable color difference. 0.001 is equivalent to 1 MacAdam ellipse. Chair design by Max Jongewaard.
20. Computational Optical Geometry Generation with Grasshopper in Photopia for Rhino A light guide extraction feature design tool patterns any extraction feature geometry across any NURBS surface. The feature density and rate of size change is user defined. Design tool produces curved facets for any revolved reflector or lens surface. User defined inputs for the # of facets around the circumference, horizontal and vertical curvature and the draft angle, which limits vertical curvature to avoid part undercuts.
21. Light Guide Extraction Feature Generation with Grasshopper in Photopia for Rhino A light guide extraction feature design tool allows any extraction feature geometry to be arrayed across any NURBS surface. User defined feature density and rate of feature size changes.
22. Modeling Underwater Lighting Effects Pool model with 3 LED lights, spectral water properties & air/water interface at the surface.
23. Modeling Underwater Lighting Effects Top perspective view of pool to see all color mixing effects.
24. Modeling Underwater Lighting Effects Quantitative results with false color plot showing lux levels in the pool.
25. Modeling Underwater Lighting Effects Quantitative results with gray scale plot showing lux levels in the pool.
26. Modeling Automotive Interior Lighting Quantitative results show lux levels on car seat from dome light.
27. Automotive Interior Lighting – False Color Illuminance onto Driver’s Seat Isolating seat to show lux levels from LED dome light.
28. Automotive Interior Lighting – Appearance with Spectral Reflectance True color illuminance onto seat from 4000K LED. True color exitance reflected off seat from 4000K LED and spectral reflectance of slate gray main seat with cherry red cushion & logo.
29. Luminaire Luminous Images CAD model showing the housing, PCB, LED array and diffuser in Rhino. LED Nichia 757 V1 2700K LED Layout 4x4 Array, 25mm Spacing Lens Bright View Circular 80° 10mm in front of LED emission surface 125mm x 125mm Reflector Materials White Optics F16.4, white PCB
30. Luminous Image Model Configuration View of simulation model for a luminous image. A smooth spherical convex lens and aperture are placed between the optic and the image projection plane. Luminaire Convex Lens Aperture Image Projection Plane
31. Images of Diffuser on Image Plane True color image. False color image showing lux values on projection plane. Values are proportional to luminance and can be converted to luminance via a scale factor based on the lens system F-number.
32. Color Uniformity Evaluation Across Diffuser “Delta u’v’ from average” plot of the image projection plane. This plot shows the color variation over the diffuser surface. 0.001 is 1 MacAdam ellipse. True color image.
33. Tunable White Design Color Uniformity Evaluation True color image. Subtle color variations are seen around the beam perimeter. LED array uses 7 2700K and 7 5000K LEDs. “Delta u’v’ from average” plot of illuminance plane. This plot shows the quantitative color variation over the plane. In this color space, 0.001 is 1 MacAdam ellipse. Perimeter color variations are now very clearly identified.
34. Tunable White Design Color Uniformity Evaluation True color image with improved color mixing features in the optic. Distinct color differences around the perimeter are gone and there is now just a smooth color gradient from the center outward.
35. Medical Illumination / Irradiation / Color Uniformity Exitance off object. Illuminance onto object.
36. Desk Lamp Luminous Views Detailed light pattern onto desk and shade surface from a 4 “filament” LED A-lamp with surrounding cage. The shadows are all due to the 4 individual filaments being blocked by the various bars of the cage. Images were created using “object recorders” in Rhino. Note that the A-lamp appearance is shown via Rhino’s standard ghosted shaded view.
37. Accurate “Near-Field” Effects This wall grazer design is intended to be mounted so that it nearly touches the wall being lit. “Far-field” photometry does not adequately quantify the way this luminaire will interact with the wall. The 3D rays within and emitting from the luminaire model in Photopia precisely describe the light field it produces. Surfaces can therefore be placed anywhere, including within the luminaire, to see how the light interacts with those surfaces.
38. Passive Infrared (PIR) Motion Detector Sensor Lens Simulation 2 Element Sensor Optical Model Array of Fresnel lens features aimed toward different regions of the field of view. 4 sensor elements setup to emit red & green light to confirm their beams minimally overlap.