19 November 2001 Optimal design of a nonimaging projection lens for use with an rf-powered source and a rectangular target
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Fusion Lighting, Inc. has been developing an RF-powered electrodless light source known as the ByteLight. This source is spectrally stable, has a high luminous efficiency and exceptional spatial and angular uniformity. In this paper we describe a nonimaging projection lens designed to efficiently collect and transfer flux from the circular aperture of a ByteLight lamp into a rectangular aperture of an optical train of an InFocus Model LP0335-V single-panel DMD-based front projector. The source was experimentally characterized by Radiation Imaging, Inc. using a technique that captures its full 4D phase space behavior. The lens was then designed by implementing a global optimization procedure over a parameterization search space with variables that determine the positional and aspheric geometrical properties of the lines. The optimization was performed subject o constraints arising from packaging and fabrication considerations. The resulting lens employs a combination of refraction and total-internal reflection mechanisms to achieve a total flux-transfer efficiency of 75.6 % which compares favorably to a baseline design that employs a UHP arc lamp.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Narkis E. Shatz, John C. Bortz, Douglas Kirkpatrick, Michael Dubinovsky, "Optimal design of a nonimaging projection lens for use with an rf-powered source and a rectangular target", Proc. SPIE 4446, Nonimaging Optics: Maximum Efficiency Light Transfer VI, (19 November 2001); doi: 10.1117/12.448819; https://doi.org/10.1117/12.448819


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