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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 10 — May. 7, 2012
  • pp: 10984–10995

Freeform lens design for LED collimating illumination

Jin-Jia Chen, Te-Yuan Wang, Kuang-Lung Huang, Te-Shu Liu, Ming-Da Tsai, and Chin-Tang Lin  »View Author Affiliations

Optics Express, Vol. 20, Issue 10, pp. 10984-10995 (2012)

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We present a simple freeform lens design method for an application to LED collimating illumination. The method is derived from a basic geometric-optics analysis and construction approach. By using this method, a highly collimating lens with LED chip size of 1.0 mm×1.0 mm and optical simulation efficiency of 86.5% under a view angle of ± 5 deg is constructed. To verify the practical performance of the lens, a prototype of the collimator lens is also made, and an optical efficiency of 90.3% with a beam angle of 4.75 deg is measured.

© 2012 OSA

OCIS Codes
(220.2740) Optical design and fabrication : Geometric optical design
(230.3670) Optical devices : Light-emitting diodes
(220.2945) Optical design and fabrication : Illumination design
(220.4298) Optical design and fabrication : Nonimaging optics

ToC Category:
Optical Design and Fabrication

Original Manuscript: March 13, 2012
Revised Manuscript: April 7, 2012
Manuscript Accepted: April 7, 2012
Published: April 26, 2012

Jin-Jia Chen, Te-Yuan Wang, Kuang-Lung Huang, Te-Shu Liu, Ming-Da Tsai, and Chin-Tang Lin, "Freeform lens design for LED collimating illumination," Opt. Express 20, 10984-10995 (2012)

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