title: Collimating lamp with well color mixing of red/green/blue LEDs.
abstract: 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 find a balance between optical efficiency and color uniformity by changing light recycling and color mixing.
authors.affiliation: Institute of Lighting and Display Science /Department of Optics and Photonics, National Central University, Chung-Li, 320, Taiwan. ccsun@dop.ncu.edu.tw
authors.forename: Ching-Cherng
authors.initials: CC
authors.lastname: Sun
authors.forename: Ivan
authors.initials: I
authors.lastname: Moreno
authors.forename: Yi-Chien
authors.initials: YC
authors.lastname: Lo
authors.forename: Bo-Chun
authors.initials: BC
authors.lastname: Chiu
authors.forename: Wei-Ting
authors.initials: WT
authors.lastname: Chien
mesh_terms: D003116:Color; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008029:Lighting / Q000295:instrumentation*; D012666:Semiconductors