Optical design of THz image surface scanning with an off axis parabolic mirror

	Optical design of THz image surface scanning with an off axis parabolic mirror
	Zhang, Z.; J. Sun; Z. Liu; X. Li and J. Ren
	2016
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
卷号	45 期号:7
摘要	In order to improve the THz imaging speed, an image surface scanning THz fast imaging system was designed. It was a single pixel imaging system basing on the reflection type. The system collected THz by an off axis parabolic mirror which was used to realize the imaging of large caliber, high transmittance, high quality imaging. The optical parameters of system were that F/# was 2.93, the aperture diameter was 120 mm, the field angle was 1, the focus length was 293.45 mm, the size of imaging window was 64 mm64 mm, the diameter of circular hole was 2 mm, the imaging speed of 1616 pixels was 0.1 min, the imaging speed of 3232 pixels was 0.47 min, the imaging speed of 6464 pixls was 1.7 min, and the spatial resolution was 10 mm. The system combined with compressed sensing theory and image surface scanning theory realized the fast imaging property. A rotation plate with holes was inserted at image surface position, which scanned the THz intensity. Then a light cone was employed to collect energy to the Golay detector. The device output image by a special situation of compressed sensing theory that the sample number equaled to the image pixels. Sequentially, the regular least squares algorithm was used to reconstruct intensity distribution. The system has the property of high imaging speed and resolution, low costs, and small structure. 2016, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.
文章类型	期刊
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57456
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang, Z.,J. Sun,Z. Liu,et al. Optical design of THz image surface scanning with an off axis parabolic mirror[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2016,45(7).
APA	Zhang, Z.,J. Sun,Z. Liu,&X. Li and J. Ren.(2016).Optical design of THz image surface scanning with an off axis parabolic mirror.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,45(7).
MLA	Zhang, Z.,et al."Optical design of THz image surface scanning with an off axis parabolic mirror".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 45.7(2016).

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