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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 22 — Aug. 1, 2001
  • pp: 3640–3648

Design of efficient lightpipes for illumination by an analytical approach

Anurag Gupta, Junwon Lee, and R. John Koshel  »View Author Affiliations


Applied Optics, Vol. 40, Issue 22, pp. 3640-3648 (2001)
http://dx.doi.org/10.1364/AO.40.003640


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Abstract

We present the concept of principal sections of a lightpipe to analyze the propagation of light through the lightpipe by total internal reflection. Only the principal sections determine the acceptance angle and thus help in the identification of regions where the leakage occurs first. Use of principal sections for analysis leads to a significant reduction in the design effort. We present an analysis of several commonly used lightpipe configurations, e.g., straight and single circular bend, and different cross sections, e.g., elliptical and rectangular. This analysis leads to the maximization of throughput and transfer efficiency. The uniformity characteristics of elementary configurations and scaling factors for a lightpipe with a single circular bend are also discussed.

© 2001 Optical Society of America

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(230.7370) Optical devices : Waveguides

History
Original Manuscript: October 30, 2000
Revised Manuscript: March 27, 2001
Published: August 1, 2001

Citation
Anurag Gupta, Junwon Lee, and R. John Koshel, "Design of efficient lightpipes for illumination by an analytical approach," Appl. Opt. 40, 3640-3648 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-22-3640

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