Design of LED source with large aperture and small view angle used in the LCD detection

	Design of LED source with large aperture and small view angle used in the LCD detection
	Wang, Y.; L. Jing; B. Dang; Q. Sun; Y. Liu; H. Liu and J. Hao
	2015
发表期刊	Guangxue Xuebao/Acta Optica Sinica
卷号	35 期号:10
摘要	In order to increase the illuminance uniformity of the source used in the liquid crystal display (LCD) detection, based on nonimaging optics, a method of a light emitting diode (LED) source with large aperture and small view angle is proposed in this paper. The illumination system of this source is realized by array of LEDs and the lenses. For a single LED, Fresnel lens is designed to collimate the beam with small view anglethen, the optimal distance of the array is obtained by deducing the uniform illumination condition and optimizing it with TracePro. Finally, the uniform rectangular illumination is achieved through splicing superposition the spot on the illuminating surface. The illumination source consists of 129 optical units which are arranged in uniform rectangle, and the distance between every two optical units is 30 mm. The simulation results show that the viewing angle of the source is less than 10. At the target surface 170 mm away from the source, the average illuminance is greater than 45000 lx, and the nonuniformity is 3.8%. All of the indexes meet the design requirements. Comparing with the existed source, the arrayed source designed in this paper has obvious advantages whether on the average illuminance or the illuminance uniformity. 2015, Chinese Optical Society. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56198
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang, Y.,L. Jing,B. Dang,et al. Design of LED source with large aperture and small view angle used in the LCD detection[J]. Guangxue Xuebao/Acta Optica Sinica,2015,35(10).
APA	Wang, Y.,L. Jing,B. Dang,Q. Sun,Y. Liu,&H. Liu and J. Hao.(2015).Design of LED source with large aperture and small view angle used in the LCD detection.Guangxue Xuebao/Acta Optica Sinica,35(10).
MLA	Wang, Y.,et al."Design of LED source with large aperture and small view angle used in the LCD detection".Guangxue Xuebao/Acta Optica Sinica 35.10(2015).

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