3 October 1997 Uniform high-efficiency condenser for projection systems
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Abstract
We present a novel condenser system based on a nonimaging TIR lens and an associated apodizing aspheric lens. This system provides uniform collimated illumination of the image plane of a projector such as an overhead viewgraph or LCD projector. The TIR lens enables the system to be very compact. The aspheric lens lies between the light source and the TIR lens, so that the TIR lens output illumination is spatially uniform.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vladimir Medvedev, William A. Parkyn, David G. Pelka, "Uniform high-efficiency condenser for projection systems", Proc. SPIE 3139, Nonimaging Optics: Maximum Efficiency Light Transfer IV, (3 October 1997); doi: 10.1117/12.290216; https://doi.org/10.1117/12.290216
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