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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 9 — Apr. 26, 2010
  • pp: 9055–9063

Design of compact and smooth free-form optical system with uniform illuminance for LED source

Yi Luo, Zexin Feng, Yanjun Han, and Hongtao Li  »View Author Affiliations

Optics Express, Vol. 18, Issue 9, pp. 9055-9063 (2010)

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A feedback modification method based on variable separation mapping is proposed in the design of free-form optical system with uniform illuminance for LED source. In this method, the non-negligible size of LED source is taken into account, and a smooth optical system is established with single freeform surface regenerated by adding feedback to the lens design for a point light source. More rounds of feedback can improve the lens performance. As an example, a smooth free-form lens with rectangular illuminance distribution is designed, and the illuminance uniformity is improved from 18.75% to 81.08% after eight times feedback.

© 2010 OSA

OCIS Codes
(220.2945) Optical design and fabrication : Illumination design
(080.4225) Geometric optics : Nonspherical lens design
(080.4298) Geometric optics : Nonimaging optics

Original Manuscript: March 2, 2010
Revised Manuscript: April 6, 2010
Manuscript Accepted: April 6, 2010
Published: April 15, 2010

Yi Luo, Zexin Feng, Yanjun Han, and Hongtao Li, "Design of compact and smooth free-form optical system with uniform illuminance for LED source," Opt. Express 18, 9055-9063 (2010)

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