Freeform lens design for LED collimating illumination

Jin Jia Chen; Te Yuan Wang; Kuang Lung Huang; Te Shu Liu; Ming Da Tsai; Chin Tang Lin

doi:10.1364/OE.20.010984

Freeform lens design for LED collimating illumination

Jin Jia Chen, Te Yuan Wang, Kuang Lung Huang, Te Shu Liu, Ming Da Tsai, Chin Tang Lin

Department of Electrical Engineering

Research output: Contribution to journal › Article

97 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	10984-10995
Number of pages	12
Journal	Optics Express
Volume	20
Issue number	10
DOIs	https://doi.org/10.1364/OE.20.010984
Publication status	Published - 2012 May 7

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All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

Cite this

Chen, J. J., Wang, T. Y., Huang, K. L., Liu, T. S., Tsai, M. D., & Lin, C. T. (2012). Freeform lens design for LED collimating illumination. Optics Express, 20(10), 10984-10995. https://doi.org/10.1364/OE.20.010984

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Access to Document

10.1364/OE.20.010984