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Proceedings Paper

Köhler integration in color mixing collimators
Author(s): Oliver Dross
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Paper Abstract

Köhler integrating lenslet arrays can provide collimated, uniform, and color mixed beams from an array of sources of arbitrary color. The integration can be achieved with two lenslet arrays after collimation, with lenslet arrays embedded into certain collimators or close to the sources before collimation with a double sided lenslet shell. The degree of color mixing of the different approaches can be less than ideal. We have investigated the main mixing degradation mechanisms both in the near and in the far field and quantified them for certain source and architecture combinations. From this analysis we can derive simple design rules for successful color mixing.

Paper Details

Date Published: 8 September 2015
PDF: 17 pages
Proc. SPIE 9571, Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems, 957109 (8 September 2015); doi: 10.1117/12.2189485
Show Author Affiliations
Oliver Dross, Philips Research (Netherlands)


Published in SPIE Proceedings Vol. 9571:
Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems
Matthew H. Kane; Jianzhong Jiao; Nikolaus Dietz; Jian-Jang Huang, Editor(s)

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