Photopia
Stable release
2015.1 / November 3, 2015 (2015-11-03)
Operating systemWindows
TypeCAD Software
LicenseProprietary. Copyright(c) 1996-2016, LTI Optics, LLC.
Websitewww.ltioptics.com/Photopia/overview.html

Photopia Optical Design Software (Photopia) is a commercial optical engineering ray-tracing software program for the design and analysis of non-imaging optical systems. Photopia is written and distributed by LTI Optics, LLC (formerly Lighting Technologies, Inc.) and was first released in 1996. Photopia's main market is the architectural lighting industry but it is also used in the automotive, medical, industrial, signal and consumer products industries. Photopia includes a full library of lamps including the latest high brightness LEDs as well as a library of material BSDF data.

History

Photopia's predecessor, FiELD was released by Lighting Technologies, Inc. in 1987. A major re-write of the code resulted in Photopia, released in 1996. Photopia has been in continual development since 1996, first by Lighting Technologies, Inc., then by spin off LTI Optics, LLC who has been responsible for Photopia since 2006.

Markets

Photopia is used in the architectural lighting, medical, automotive, industrial, signal and consumer products industries. It has been used to design LED luminaires.,[1] solar concentrators,[2] and UV disinfection systems[3][4] , among many others.

Daylighting Simulation

Photopia has found wide use in the daylighting simulation segment of the market. Photopia has a built in set of CIE Sky Models[5] for simulating the output of various daylighting devices, including light shelves,[6][7][8] glazing,[9][10] tubular daylight devices,[11][12] and solar concentrators[13][14]

User Interface

Photopia works on modern versions of the Windows operating system. Photopia has a CAD system which is used for setting up simulations and viewing results. Photopia can import DXF, DWG, and STL drawing files, and can export DXF and 3DM file formats for CAD translation. Photopia has a scripting interface for running batch analysis and setting up models without the CAD interface.

Photopia for SolidWorks is an add-in that provides full ray trace simulations and output viewing inside of recent versions of SolidWorks.

Photopia for Rhino is an add-in that provides full ray trace simulations and output viewing inside of recent versions of Rhino.

Source and Material Library

Photopia has a library of source models for lamps that can be imported, as well as a library of material BSDF data that can be assigned to parts. This ensures that raytraces are accurate since the input data for lamps and materials is accurate.

See also

References

  1. ↑ Kim, YS; Choi, AS; Jeong, JW (July 2012). "Development of a Numerical Model for the Luminous Intensity Distribution of a Planar Prism LED Luminaire for Applying an Optimization Algorithm". LEUKOS: The Journal of the Illuminating Engineering Society of North America. 9 (1): 57–72. doi:10.1582/LEUKOS.2012.09.01.004. S2CID 113092538.
  2. ↑ Linhart, F; Wittkopf, SK; Munch, M; Scartezzini, JL (August 20, 2009). Winston, Roland; Gordon, Jeffrey M. (eds.). "Recent research on anidolic daylighting systems: highly reflective coating materials and chronobiological properties". Proc. SPIE 7423, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VI, 74230K. Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VI. 7423: 74230K. Bibcode:2009SPIE.7423E..0KL. doi:10.1117/12.826136. S2CID 123468409.
  3. ↑ Ahmed, Y; Blatchley, ER. "CFD-I Modeling of UV Disinfection Reactors with Stochastic Evaluation of System Variables" (PDF). Retrieved 14 October 2014.
  4. ↑ Kowalski, WJ; Bahnfelth, WP (January 2000). "UVGI Design Basics for Air and Surface Disinfection" (PDF). HPAC Engineering: 100–110. Archived from the original (PDF) on 20 December 2014. Retrieved 14 October 2014.
  5. ↑ Alotto, FD; Linhart, F; Scartezzini, JL (September 2009). "CIE Standard Skies in Switzerland: Relative Occurrence and Impact on Daylighting System Performance" (PDF). Ecole Polytechnique Federale de Laussane. pp. 237–242. Retrieved 14 October 2014.
  6. ↑ Tsangrassoulis, A; Machairas, V; Azarli, C (August 2009). "Simplified Design of a Specular Slat Profile Curve Using 2D Ray Tracing and Genetic Algorithms" (PDF). Proceedings of BS2013: 13th Conference of International Building Performance Simulation Association (Chambery France). Retrieved 14 October 2014.
  7. ↑ Scartezzini, JL; Linhart, F (October 2009). "Green Lighting: Energy-Efficiency Integrated Lighting Systems". Swiss Federal Office of Energy. p. 107. Retrieved 14 October 2014.
  8. ↑ Linhart, F; Wittkopf, SK; Scartezzini, JL (13 August 2009). "Splitting up anidolic daylighting systems". SPIE Newsroom. Retrieved 14 October 2014.
  9. ↑ Kostro, A; Schuler, A (2009). "Integrated Multifunctional Glazing For Dynamical Daylighting" (Annual Report 2009). Swiss Federal Office of Energy. Retrieved 14 October 2014.
  10. ↑ Wittkopf, S; Grobe, LO; Geisler-Moroder, D; Compagnon, R; Kampf, J; Linhart, F; Scartezzini, JL (June 2010). "Ray tracing study for non-imaging daylight collectors". Solar Energy. 84 (6): 986–996. Bibcode:2010SoEn...84..986W. doi:10.1016/j.solener.2010.03.008.
  11. ↑ Digert, N; Fernandes, L (Feb 2008). "PAC Show and Tell: Project 2: Improved Daylighting Performance of Tubular Daylighting" (PDF). PIER. Archived from the original (PDF) on 13 May 2008. Retrieved 14 October 2014.
  12. ↑ New Buildings Institute (March 2013). "Enhanced Skylight Modeling and Validation" (PDF). New Buildings Institute. Retrieved 14 October 2014.
  13. ↑ Su, Y; Pei, G; Riffat, S; Huang, H (March 2012). "A Novel Lens-Walled Compound Parabolic Concentrator for Photovolatic Applications". Journal of Solar Energy Engineering. 134 (2): 7. doi:10.1115/1.4005757. Retrieved 14 October 2014.
  14. ↑ Su, Y; Riffat, S; Pei, G (October 2012). "Comparative study on annual solar energy collection of a novel lens-walled compound parabolic concentrator (lens-walled CPC)". Sustainable Cities and Society. 4: 35–40. doi:10.1016/j.scs.2012.05.001.
  15. ↑ "CREE LED Solution Providers: Optics". Retrieved 14 October 2014.
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