板上芯片集成封装发光二极管的光色检测系统

发布时间：2018-10-21 09:25

【摘要】：针对板上芯片(COB)集成封装发光二极管(LED)补粉排测设备对光色参数检测的需求,研制了一套基于光纤光谱仪的LED快速光色检测系统。该系统包括光色参数检测模块、LED测试机械结构及显示模块等3个部分。光色参数检测模块主要由自制光谱仪构成,用于对测量获得的光谱数据进行计算,进而得出LED的光色参数。LED测试机械结构由积分球和可加装不同COB封装LED的夹具测试平台构成。基于该系统架构,可快速测量LED的光通量、色坐标及色温等参数。利用该设备进行了COB封装LED的快速扫描并测量了它的光色参数,期间操作者可根据实际测量结果进行相应的补粉。结果表明:在测试10颗LED时,单次测量时间少于3s;LED色坐标准确度优于±0.003,色坐标重复性小于0.000 5,色温测试精度为0.6%@5700K,色温重复性误差小于0.000 8。测试结果满足了当前大功率COB封装LED测试系统对速度、准确性和重复性的要求。
[Abstract]:In order to meet the demand of photochromic parameter detection of (COB) integrated packaging LED (LED) powder filling device on board, a fast photochromatic detection system for LED based on optical fiber spectrometer is developed in this paper. The system includes three parts: photochromic parameter detection module, LED testing mechanical structure and display module. The photochromatic parameter detection module is mainly composed of a self-made spectrometer, which is used to calculate the spectral data obtained from the measurement, and then the photochromatic parameters of LED are obtained. The LED testing mechanical structure is composed of an integral sphere and a fixture test platform with different COB encapsulation LED. Based on the system architecture, the luminous flux, color coordinate and color temperature of LED can be measured quickly. The equipment is used to scan the COB encapsulated LED and measure its photochromatic parameters. During the process, the operator can supplement the powder according to the actual measurement results. The results show that the accuracy of color coordinates is less than 卤0.003, the repeatability of color coordinates is less than 0.000, the accuracy of color temperature measurement is 0.000 K and the repeatability error of color temperature is less than 0.000 8. The test results meet the requirements of speed, accuracy and repeatability of the current high power COB package LED test system.
【作者单位】：中国计量学院光学与电子科技学院;浙江理工大学信息学院;
【基金】：浙江省科技厅公益技术应用研究项目(No.2014C31114)
【分类号】：TN312.8

【相似文献】