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12 September 2006 Lightguide with controlled numerical aperture for general illumination
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Abstract
Lightguide devices are commonly used in a large number of applications such as light-delivery systems, illumination, and displays. The general approach is to outcouple light from the lightguide without concern for its propagation properties within the guiding material. We introduce the concept of a lightguide with controlled numerical-aperture as it propagates within the guiding substrate and demonstrate the advantages with this approach, compared to other methods commonly used. We also demonstrate the application of our lightguide technology for general illumination with controlled light distribution and high efficiency.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Donald J. Schertler, Stephen Chakmakjian, Tasso R. M. Sales, and G. Michael Morris "Lightguide with controlled numerical aperture for general illumination", Proc. SPIE 6337, Sixth International Conference on Solid State Lighting, 633716 (12 September 2006); https://doi.org/10.1117/12.683969
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