Package for Side Emitting LED

Abstract:

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A wide angle light-deflected lens combining collimation and total internal reflection (TIR) optical mechanics for LED package is proposed. Utilizing angle-dividing method the angle of emitting distribution of LED chip was cut into several angular zones and then a light-collimating curve surface with corresponding declined plane performing TIR for the collimated incident ray was designed. Thereby, the light-deflected lens, consisting of multi pairs of collimating curve surfaces and declined planes, can achieve wide-angle deflection of light emitting from LED chip. The design rule and experiment results of the lens with optimization optical design are demonstrated and discussed in this paper.

Info:

Periodical:

Key Engineering Materials (Volumes 364-366)

Edited by:

Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO

Pages:

148-151

Citation:

Y. N. Pao et al., "Package for Side Emitting LED", Key Engineering Materials, Vols. 364-366, pp. 148-151, 2008

Online since:

December 2007

Export:

Price:

$38.00

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DOI: https://doi.org/10.1889/1.1832516

[2] R. S. West, G. D. Sasser, J. W. Stewart: Lens and Lens Cap with Sawtooth Portion for Light Emitting Diode, U.S. Patent 6607286.

[3] R .S. West, Gary D. Sasser, J. W. Stewart: Side Emitting LED and Lens, U.S. Patent 6679621.

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