中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页
机构
成果
学者
登录
注册
登陆
×
验证码:
换一张
忘记密码?
记住我
×
校外用户登录
CAS IR Grid
机构
长春光学精密机械与物... [1]
采集方式
OAI收割 [1]
内容类型
会议论文 [1]
发表日期
2008 [1]
学科主题
筛选
浏览/检索结果:
共1条,第1-1条
帮助
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
排序方式:
请选择
题名升序
题名降序
提交时间升序
提交时间降序
作者升序
作者降序
发表日期升序
发表日期降序
Study on chromaticity balance for LED exposure system (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2007 - Laser, Ultraviolet, and Terahertz Technology, September 9, 2007 - September 12, 2007, Beijing, China
作者:
Meng Z.
;
Meng Z.
收藏
  |  
浏览/下载:13/0
  |  
提交时间:2013/03/25
A standard white light compounding algorithm based on combination of CCD illumination acquisition with computer control is presented for LEDs. The computer adjust and control the working current of LEDs by using three-color LEDs illumination acquired by CCD camera
achieved chromaticity coordinates error between compounded white light and standard white light D65 less than the threshold beforehand setted by this technique
then acquiring needed standard white light. Compounded white light meet the chromaticity error demand that is able to be changed
at the same time the CCD illumination acquisition system is eliminated. The proposed algorithm improved the light energy utilization efficiency of LED
and eliminated the offset of central wavelength and chromaticity coordinates due to work current change of LEDs. Experimental results show that the proposed algorithm achieved lesser chromaticity error uv=0.001 relative to standard white light D65
enhanced chromaticity uniformity of illumination field.