Survey of light sources for image display systems to achieve brightness with efficient energy

Dah Yu Cheng; Li-Min Chen

doi:10.1117/12.205896

7 April 1995 Survey of light sources for image display systems to achieve brightness with efficient energy

Dah Yu Cheng, Li-Min Chen

Proceedings Volume 2407, Projection Displays; (1995) https://doi.org/10.1117/12.205896
Event: IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology, 1995, San Jose, CA, United States

Abstract

This paper will review the currently available light sources, and also introduces a new, patented compound orthogonal parabolic reflector to be integrated with the light source, which focuses a relatively large light source into a very small point. The reflector creates a nearly ideal intense point source for all next generation image display systems. The proposed system is not limited by the radiation source whether it is a short arc lamp or a long tungsten filament lamp. Our technologies take the finite size of radiation sources into account to address the common problem for all reflector lamp systems, i.e., intensity and uniformity (dark hole). Successful examples will be shown on how to make the efficient intense light source match the requirements of LCD and DMD display systems. A method for reducing U.V. and I.R. radiation will also be demonstrated.

Citation Download Citation

Dah Yu Cheng and Li-Min Chen "Survey of light sources for image display systems to achieve brightness with efficient energy", Proc. SPIE 2407, Projection Displays, (7 April 1995); https://doi.org/10.1117/12.205896

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