Simultaneous color-mixing and collimation within LED package

Ivan Moreno; Nayeli Rodriguez; Jose Carlos Basilio

doi:10.1117/12.2026629

25 September 2013 Simultaneous color-mixing and collimation within LED package

Ivan Moreno, Nayeli Rodriguez, Jose Carlos Basilio

Proceedings Volume 8841, Current Developments in Lens Design and Optical Engineering XIV; 884102 (2013) https://doi.org/10.1117/12.2026629
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

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.

Citation Download Citation

Ivan Moreno, Nayeli Rodriguez, and Jose Carlos Basilio "Simultaneous color-mixing and collimation within LED package", Proc. SPIE 8841, Current Developments in Lens Design and Optical Engineering XIV, 884102 (25 September 2013); https://doi.org/10.1117/12.2026629

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