Translator Disclaimer
12 November 2003 Flux propagation in light pipe illumination systems
Author Affiliations +
An analytical model of light propagation in rectangular light pipes is presented. Light pipe illumination systems are an efficient means of collecting, transporting, and distributing light. One area where light pipe illumination systems are successfully employed is in transportation display lighting, such as instrument panel illumination. In these applications the transportation industry takes advantage of injection molding to manufacture light pipe systems at relatively low costs. One historical drawback to using light pipe illumination systems is the design effort associated with iterative prototyping cycles and evaluation. The model presented here is a graphical method of describing ray propagation in light pipes. The model describes ray direction vector space in spherical coordinates. With this model, the angular "mode" of a ray can be defined at any plane in the system. The angular mode propagation space describes input coupling, flux transport, and output coupling in light pipe illumination systems. The model of flux propagation described here is therefore a tool to aid in "first order" design and layout of light pipe illumination systems.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John F. Van Derlofske and Thomas A. Hough "Flux propagation in light pipe illumination systems", Proc. SPIE 5186, Design of Efficient Illumination Systems, (12 November 2003);


Research of TIR LED collimation system based on freeform
Proceedings of SPIE (March 07 2017)
Free-form lens design for LED indoor illumination
Proceedings of SPIE (November 15 2010)
A Different Approach to Lighting and Imaging Formulas for...
Proceedings of SPIE (February 22 1987)
Study on optical design method for LED extended sources
Proceedings of SPIE (October 06 2010)
Illumination lenses designed by extrinsic differential geometry
Proceedings of SPIE (September 20 1998)
Light output losses of prism light guides
Proceedings of SPIE (December 17 2012)

Back to Top