Collimating lamp with well color mixing of red/green/blue LEDs

Ching-Cherng Sun, Ivan Moreno, Yi-Chien Lo, Bo-Chun Chiu, Wei-Ting Chien
2011 Optics Express  
A novel light luminaire is proposed and experimentally analyzed, which efficiently mixes and projects the tunable light from red, green and blue (RGB) light-emitting diodes (LEDs). Simultaneous light collimation and color mixing is a challenging task because most collimators separate colors, and most color mixers spread the light beam. Our method is simple and compact; it only uses a short light pipe, a thin diffuser, and a total internal reflection lens. We performed an experimental study to
more » ... rimental study to find a balance between optical efficiency and color uniformity by changing light recycling and color mixing.
doi:10.1364/oe.20.000a75 pmid:22379671 fatcat:sn4cviwvqfhrtowi7boi4e5nzu