Measurement of LED Spatial Intensity Distribution Using Imaging
(0) This paper, through studying of LED luminescence properties, presents a fast measurement method and device of LED sources spatial intensity distribution. This method is based on planar imaging, and it has significant merits of fast, easy operated, informative and real–time. The basic structure is LED luminous energy converges on image space through optical lens of a certain numerical aperture(NA). In image space, the energy on the defocused plane is collected with the imaging detector. Then, calculating energy distribution on object virtual plane from that on the image space defocused plane through imaging relationship. Thus, each point of the LED luminous intensity distribution on object virtual plane can be calculated. Tracepro simulation software is used to simulate energy distribution of the model, and the corresponding data analysis shows that planar imaging can accurately reflect the distribution of the LED light. This method has practical meanings for luminous flux measurement of some LEDs.
Spatial Light Intensity LED Planar imaging Light energy
Huanbo Shen Qingguang Chen Bin Lin
State Key Lab of Modern Optical Instrumentation, Zhejiang University, Hangzhou, China NERC for Optic College of Life Information Science & Instrument Engineering, Hangzhou Dianzi University,Hangzhou 31
国际会议
沈阳
英文
780-784
2011-11-22（万方平台首次上网日期，不代表论文的发表时间）