高性能LED混光照明的研究(上)

Mixed Lighting of High Performance LED (Ⅰ)

目前,LED照明光源主要是由蓝光激发YAG荧光粉的白光LED,虽然有很多优点,但光学指标一般,色温偏高而显色性又较低。随着照明范围的扩大以及对照明光环境、照明品质要求的提高,常规LED照明光源已经无法满足高性能照明的要求,迫切需要在照明光源输出的可调节色温、照明显色性优化、变色温高显色性照明等进行研究,对LED混光照明进行研究成为了1种趋势。为此,在不改变现有LED照明光源固有性能的条件下,采用多颗不同光色LED混光的方式对LED的照明进行研究,可以获得很好的效果。研究范围涵盖有变色温照明、高显色性照明、变色温高显色性照明3大部分,给出了3大部分混光照明的技术路线、光学性能以及特点。

At present, the LED light source is mainly white light LED achieved by blue light stimulating the YAG phosphors. Despite a lot of advantages, its chromaticity index is mediocre with slightly high color temperature and low color rendering. As the enlargement of the scope of lighting and the increasing demands for the lighting environment and lighting quality, general LED light source fails to meet the requirements of high performance lighting. Researches are desperately needed in light source output of adjustable color temperature, the optimization of color rendering and changing color temperature and high color rendering lighting. The LED mixed lighting research has become a trend. Therefore, under the condition of not changing the inherent performance of present LED light source, using mixing mode of many different colors of LEDs to study of LED lighting obtains very good effect. The research covers changing color temperature lighting, high color rendering lighting and changing color temperature and high color rendering lighting. The three mixed lighting technical routes, optical properties and characteristics are given.