摘要
根据色度学原理和 LED的特点探讨了应用高亮度 LED照明时由红绿蓝三种颜色的 LED发光管所发出的光为三原色的配色原理 ,应用 CIE色度系统实现三原色配色的计算 ,确定了三原色的配色比例 ;根据人眼视觉惰性原理 ,采用脉宽调制 ( PWM)的控制方式对 LED亮度进行控制 ,从而实现对 LED颜色灰度级的控制和调节 。
High brightness LED is a kind of green light source and shows promise of wide applications. Based on the principles of chromaticity and the characteristics of LED, this paper approaches the color mix theories using the lights emitting from the selected three LEDs of red, green and blue as tricolor in the lighting applications of high brightness LEDs. It implements the related color matching calculation method with tricolor employing the CIE chromaticity system, which can be used to determine the proportion of the tricolor. According to the inertia of eyes, pulse width modulation (PWM) is employed to control the brightness of LEDs, thus the gray degree is conveniently controlled and adjusted so as to implement the expected brightness. This provides us a precondition for the development of green lights of high brightness LEDs.
出处
《武汉理工大学学报（交通科学与工程版）》
北大核心
2003年第2期215-218,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
广东省佛山市产学研专项基金项目资助 (编号 :2 0 0 A19)
