title: Uniform illumination design by configuration of LEDs and optimization of LED lens for large-scale color-mixing applications.
abstract: In many applications, the emitting light from light-emitting diodes (LEDs) with different colors needs to be mixed together on a large-scale plane, and this illumination mode is usually generated with a diffuser. Abandoning the traditional methods, we proposed an LED color-mixing method that can produce both high color uniformity and irradiance uniformity illumination. This method is composed of two main aspects: arrangement of the irradiance array and design of the LED lens. With this method, an independent rectangular irradiance distribution is generated by each lens unit, and the large-scale color uniform illumination is obtained by arraying the irradiance distribution. A 3×3 array of LED module units consisting of 36 LED lens units with four different colors is designed, and a desired result with high color uniformity is obtained.
authors.affiliation: State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hang Zhou, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Liu
authors.forename: Huihui
authors.initials: H
authors.lastname: Wang
authors.forename: Rengmao
authors.initials: R
authors.lastname: Wu
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
authors.forename: Yaqin
authors.initials: Y
authors.lastname: Zhang
authors.forename: Zhenrong
authors.initials: Z
authors.lastname: Zheng
authors.forename: Haifeng
authors.initials: H
authors.lastname: Li
authors.forename: Xu
authors.initials: X
authors.lastname: Liu