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Proceedings Paper

Simultaneous color-mixing and collimation within LED package
Author(s): Ivan Moreno; Nayeli Rodriguez; Jose Carlos Basilio
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Paper Abstract

A compact encapsulating lens is proposed and analyzed, which simultaneously collimates and mixes the tunable light from red, green and blue (RGB) light-emitting diode (LED) chips. Colored LED chips are embedded within a spherical lens, and a section of the sphere that surrounds chips is mirrored with a diffuse reflector. Color light is mixed by multiple total internal reflections (TIRs), the scattering mirror breaks TIR, and light escapes only in a narrow beam in the forward direction. The color distribution, the beam pattern, and efficiency are analyzed by Monte Carlo ray tracing calculations.

Paper Details

Date Published: 25 September 2013
PDF: 5 pages
Proc. SPIE 8841, Current Developments in Lens Design and Optical Engineering XIV, 884102 (25 September 2013); doi: 10.1117/12.2026629
Show Author Affiliations
Ivan Moreno, Univ. Autónoma de Zacatecas (Mexico)
Nayeli Rodriguez, Univ. Autónoma de Zacatecas (Mexico)
Jose Carlos Basilio, Univ. Autónoma de Zacatecas (Mexico)

Published in SPIE Proceedings Vol. 8841:
Current Developments in Lens Design and Optical Engineering XIV
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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