Optimal design of light-engine optics for a video projector

Narkis E. Shatz; John C. Bortz; Mark D. Peterson

doi:10.1117/12.516138

8 January 2004 Optimal design of light-engine optics for a video projector

Narkis E. Shatz, John C. Bortz, Mark D. Peterson

Proceedings Volume 5185, Nonimaging Optics: Maximum Efficiency Light Transfer VII; (2004) https://doi.org/10.1117/12.516138
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We consider the problem of designing illumination optics to optimally transfer light from an arc lamp to a rectangular LCD target. This problem is commonly solved in the video projector industry by employing a conventional elliptical reflector. In this contribution we investigate an improved hybrid optical concept comprising a compound elliptical reflect and an aspheric lens arranged in tandem. The design goal is to maximize the photometric flux incident on the rectangular entrance pupil of a light tunnel within a 30-degree acceptance angle relative to the optical axis. The light source is a 100W UHP arc lamp, characterized by means of photometric data measured by Radiant Imaging. A global optimization procedure was used to search for the set of optical-component shape and positioning parameters that provided maximum performance, while satisfying a set of design constraints. The resulting optimized hybrid design is compared to a baseline conventional elliptical reflector design and is shown to deliver 14% more light to the rectangular target.

Citation Download Citation

Narkis E. Shatz, John C. Bortz, and Mark D. Peterson "Optimal design of light-engine optics for a video projector", Proc. SPIE 5185, Nonimaging Optics: Maximum Efficiency Light Transfer VII, (8 January 2004); https://doi.org/10.1117/12.516138

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