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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Franco Gori
  • Vol. 31, Iss. 5 — May. 1, 2014
  • pp: 1118–1125

Design of optical system for collimating the light of an LED uniformly

Chen Chen and Xiaohui Zhang  »View Author Affiliations

JOSA A, Vol. 31, Issue 5, pp. 1118-1125 (2014)

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A type of optical system consisting of one total internal reflection (TIR) lens and two reflectors is designed for collimating the light of an LED to a uniform pattern. Application of this kind of optical system includes underwater light communication and an underwater image system. The TIR lens collimates all the light of the LED to a nonuniform plane wavefront. The double-reflector system redistributes the plane wavefront uniformly and collimates again. Three optical systems that produce a different radius of the output light patterns are designed. The simulation result shows that the uniformity of the designed optical system is greater than 0.76, and the total output efficiency (TOE) is greater than 89%. At the same time, we conclude that the radius of the output reflector should not be smaller than that of the input reflector in order to keep high uniformity and TOE. One of the designed optical systems is fabricated by computer numeric control, and the experiment results satisfy that goal.

© 2014 Optical Society of America

OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(220.2945) Optical design and fabrication : Illumination design
(080.4035) Geometric optics : Mirror system design
(080.4295) Geometric optics : Nonimaging optical systems

ToC Category:
Geometric Optics

Original Manuscript: December 19, 2013
Revised Manuscript: March 17, 2014
Manuscript Accepted: March 31, 2014
Published: April 30, 2014

Chen Chen and Xiaohui Zhang, "Design of optical system for collimating the light of an LED uniformly," J. Opt. Soc. Am. A 31, 1118-1125 (2014)

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