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, Narkis E. Shatz, John C. Bortz, John C. Bortz, Douglas Kirkpatrick, Douglas Kirkpatrick, Michael Dubinovsky, 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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