High-efficiency color filters composed of a microprism array, optical interference color filters, and a microlens array light compressor were developed to increase the optical throughput of liquid-crystal projection systems. The new devices utilize the energy of whole spectra by taking full advantage of a light compressor and interference dichroic filters to distribute the energy of spectra to the respective color pixel area. Thus high-efficiency micro-optical color filters allow efficient utilization of the energy of incident light and maximize the optical throughput of the projection system.
© 2000 Optical Society of America
Fu-Jen Ko and Han-Ping David Shieh, "High-Efficiency Micro-Optical Color Filter for Liquid-Crystal Projection System Applications," Appl. Opt. 39, 1159-1163 (2000)