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Proceedings Paper

Optimal design of a nonimaging TIR doublet lens for an illumination system using an LED source
Author(s): John C. Bortz; Narkis E. Shatz; Matthijs Keuper
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Paper Abstract

We consider the problem of designing illumination optics to transfer flux from an LED source into a rectangular target aperture. An important constraint on this design was that it provide a large working distance between the source and the target aperture. An optimized compact nonimaging system consisting of an aspheric totally-internally-reflecting (TIR) lens along with an aspheric singlet was developed to provide high flux-transfer efficiency with the required working distance. A global optimization procedure was used to search a 65-dimensional parameter space for the set of optical-component shape and positioning parameters providing maximum performance, while satisfying the design constraints. A total source-to-target flux-transfer efficiency of 85.0% was achieved by the design, assuming ideal AR coatings on all refractive surfaces.

Paper Details

Date Published: 29 September 2004
PDF: 9 pages
Proc. SPIE 5529, Nonimaging Optics and Efficient Illumination Systems, (29 September 2004); doi: 10.1117/12.562598
Show Author Affiliations
John C. Bortz, Science Applications International Corp. (United States)
Narkis E. Shatz, Science Applications International Corp. (United States)
Matthijs Keuper, Lumileds Lighting, LLC (United States)

Published in SPIE Proceedings Vol. 5529:
Nonimaging Optics and Efficient Illumination Systems
Roland Winston; R. John Koshel, Editor(s)

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