公开(公告)号：US20130262006A1

公开(公告)日：2013-10-03

申请号：US13749664

申请日：2013-01-24

Applicant: NATIONAL APPLIED RESEARCH LABORATORIES

Inventor： Chun-Li CHANG ,  Kuo-Cheng HUANG ,  Ching-Ching YANG ,  Wen-Hong WU ,  Han-Chao CHANG

IPC: G01J3/50 ,  G06F17/00

CPC classification number: G01J3/505 ,  G01J1/0418 ,  G01J1/0488 ,  G01J1/26 ,  G01J1/4228 ,  G01J2001/4252 ,  G06F17/00

Abstract: A white LED quality inspection method includes steps as follows. A steady current is supplied to a LED by a rated voltage supply unit for generation of a stable light spot from the LED; a stable light spot is received by a photosensor of a luminous intensity sensing unit and transformed to digital information; the digital information is received by a preprocessing unit and transformed to pixel information; the pixel information is received by a calculation unit to calculate a Yellow Ring Index of each pixel in the pixel information.

Abstract translation: 白色LED质量检验方法包括以下步骤。 通过额定电压供应单元向LED提供稳定的电流，用于从LED产生稳定的光点; 稳定的光点由发光强度感测单元的光电传感器接收并转换为数字信息; 数字信息由预处理单元接收并转换为像素信息; 像素信息由计算单元接收，以计算像素信息中每个像素的黄色环形索引。