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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 22 — Nov. 15, 2005
  • pp: 3006–3008

No-loss bent light pipe with an equiangular spiral

Shu-Chun Chu and Jyh-Long Chern  »View Author Affiliations

Optics Letters, Vol. 30, Issue 22, pp. 3006-3008 (2005)

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Bending a light pipe and maintaining the required volume and size, while at the same time preserving source energy and minimizing bend losses, is the basic criterion for designing a light pipe. An important requirement is the design of a light pipe that is capable of being bent without loss of light and with no limitations on acceptance angle. It is shown that in theory such a light pipe does exist, in a form corresponding to the so-called golden rectangle. Numerical simulations with six different no-loss light pipes with multiple bends are provided as a demonstration.

© 2005 Optical Society of America

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

ToC Category:
Geometrical Optics

Shu-Chun Chu and Jyh-Long Chern, "No-loss bent light pipe with an equiangular spiral," Opt. Lett. 30, 3006-3008 (2005)

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  1. K. K. Li, "Illumination engine for a projection display using a tapered light pipe," U.S. patent 6,739,726 (May 25, 2005).
  2. N. Takahashi and S. Umemoto, "Liquid crystal display apparatus having light pipe with reflective polarizer," U.S. patent 6,778,235 (August 17, 2004).
  3. J. Lee and J. E. Greivenkamp, Opt. Eng. (Bellingham) 43, 1537 (2004). [CrossRef]
  4. H. Delattre, "Motor vehicle headlight with light pipe," U.S. patent 6,547,428 (April 15, 2003).
  5. A. Gupta, J. Lee, and R. J. Koshel, Appl. Opt. 40, 3640 (2001).
  6. See http://www.lumileds.com/products/ for technical information.
  7. R. Williams, The Geometrical Foundation of Natural Structure: a Source Book of Design (Dover, 1979), p. 53.
  8. See http://lambdares.com for technical information.

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