Research on the high-brightness traffic variable message sign based on laser diodes

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 瞬态光学技术国家重点实验室

	Research on the high-brightness traffic variable message sign based on laser diodes
	Feng, Li-Li1,2 ; Huang, Hai-Tao 3; Ruan, Chi1
	2015
会议名称	applied optics and photonics, china: advanced display technology; and micro/nano optical imaging technologies and applications, aopc 2015
会议日期	2015-05-05
会议地点	beijing, china
通讯作者	ruan, chi (ruanchi@opt.ac.cn)
英文摘要	researches indicate that foggy weather is one of the most critical factors that restrict human's traffic activities and cause traffic accidents. it will reduce the visibility of traffic message board, which could cause the insecurity of transportation. commonly, light-emitting diodes (leds) were used as light source for variable message sign, which could not be seen clearly in the foggy low visibility condition. a high-brightness light source which could be used for variable information board was firstly put forward in this paper. and a new type of variable message sign used in low visibility condition was also introduced. besides, the attenuation characteristics of laser diode (ld) and light-emitting diode (led) were analyzed respectively. calculation and simulation show that the attenuation of red light source is fastest, and the yellow led light has the better transmittance property. in the experiment, lds were used to make variable message board for verifying image definition. a 16∗16 array structure composed of lds was designed and could display chinese characters. by comparing the display effect of lds and leds driven with same power, they were placed in fog chamber of the visibility less than 5 meters. and experiment results show that the penetrability of red ld light is better than that of red led. so traffic variable message sign based on lds could improve the image definition and the information could be seen more clearly in the foggy weather. in addition to the high-brightness, good coherence, good direction, experimental results show that traffic variable message board based on ld has better visual effect in low visibility condition. © copyright spie. downloading of the abstract is permitted for personal use only.
收录类别	EI ; ISTP
产权排序	1
会议录	aopc 2015: advanced display technology; and micro/nano optical imaging technologies and applications
会议录出版地	spie
语种	英语
ISSN号	0277786x
内容类型	会议论文
源URL	[http://ir.opt.ac.cn/handle/181661/27718]
专题	西安光学精密机械研究所_瞬态光学技术国家重点实验室
作者单位	1.Xi'an Institute of Optics and Precision Mechanics, CAS, Xi'an, China 2.University of Chinese Academy of Sciences, Beijing, China 3.China Academy of Transportation Sciences, Beijing, China
推荐引用方式 GB/T 7714	Feng, Li-Li,Huang, Hai-Tao,Ruan, Chi. Research on the high-brightness traffic variable message sign based on laser diodes[C]. 见:applied optics and photonics, china: advanced display technology; and micro/nano optical imaging technologies and applications, aopc 2015. beijing, china. 2015-05-05.