Design of high dynamic range imaging optical system based on DMD

Lv Weizhen; Liu Weiqi; Wei Zhonglun; Kang Yusi; Feng Rui; Yang Jianming

In order to solve the high dynamic range requirement for photoelectric imaging device when it was used to observe the actual spatial scene, a newly high dynamic range imaging system whose light intensity was modulated in pixel level was designed. This system consisted of imaging lens, a fold mirror, secondary transpose imaging lens, using a DMD(Digital Micromirror Device) produced by TI Inc. as light intensity modulator, connecting the two systems perfectly through the principle of the pupil matching, and utilizing the secondary imaging system to realize one to one correspondence between DMD units and image sensor pixels. Full field of view of the MTF are higher than 0.55 at the Nyquist frequency of the image plane, and the RMS spot diameter is less than the pixel size of the CMOS image sensor in the focal plane, meanwhile such aberration of distortion is also corrected excellently. This method not only enhances detected dynamic range of the image senor, but also can detect bright and dark target simultaneously, meeting the requirements of spatial visual target imaging.

1. The First Laboratory of Spatial Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;

2. University of Chinese Academy of Sciences,Beijing 100049,China

Received Date: 2013-08-10

Rev Recd Date: 2013-09-21

Publish Date: 2014-04-25

Key words:

Abstract: In order to solve the high dynamic range requirement for photoelectric imaging device when it was used to observe the actual spatial scene, a newly high dynamic range imaging system whose light intensity was modulated in pixel level was designed. This system consisted of imaging lens, a fold mirror, secondary transpose imaging lens, using a DMD(Digital Micromirror Device) produced by TI Inc. as light intensity modulator, connecting the two systems perfectly through the principle of the pupil matching, and utilizing the secondary imaging system to realize one to one correspondence between DMD units and image sensor pixels. Full field of view of the MTF are higher than 0.55 at the Nyquist frequency of the image plane, and the RMS spot diameter is less than the pixel size of the CMOS image sensor in the focal plane, meanwhile such aberration of distortion is also corrected excellently. This method not only enhances detected dynamic range of the image senor, but also can detect bright and dark target simultaneously, meeting the requirements of spatial visual target imaging.

HTML

Reference (19)

[1]	Chen Zhebo. Research of high dynamic range imaging technology [D]. Zhejiang: Zhejiang University,2009. (in Chinese) 陈浙泊. 高动态范围成像技术的研究[D]. 浙江: 浙江大学, 2009.
[2]
[3]	Zhang Kai, Huang Yong, Sun Li, et al. Dynamic infrared scene simulation using grayscale modulation imaging [J]. Infrared and Laser Engineering, 2012,41(9): 2283-2287. (in Chinese) 张凯, 黄勇, 孙立, 等. 动态红外场景仿真的灰度调制成像技术[J]. 红外与激光工程, 2012, 41(9): 2283-2287.
[4]
[5]
[6]	Dang Dongni, Ji Yiqun, Shen Weimin. Projection lens design of wide band dynamic infrared scene simulator with digital micromirror device [J]. Infrared and Laser Engineering, 2012,41(4):1017-1021. (in Chinese) 党东妮, 季轶群, 沈为民. 宽波段DMD 动态红外景象仿真器投影光学系统设计[J]. 红外与激光工程, 2012, 41(4): 1017-1021.
[7]
[8]	Wang Zhijiang. Handbook of Practical Optical Technology[M]. Beijing: China Machine Press, 2006: 325-356. (in Chinese) 王之江. 实用光学技术手册[M]. 北京: 机械工业出版社, 2006: 325-356.
[9]	Zhang Yimo. Applied Optics [M]. Beijing: China Machine Press, 1982: 148-168. (in Chinese) 张以谟. 应用光学[M]. 北京: 机械工业出版社, 1982: 148-168.
[10]
[11]	Zhou Wang. Study on enhancing dynamic range of CCD image based on Digital Micro-Mirror Device[J]. Acta Optica Sinica, 2009, 3: 638-642. （in Chinese）周望. 基于数字微镜器件技术提高面阵CCD 相机动态范围的研究[J]. 光学学报, 2009, 3: 638-642.
[12]
[13]	Li Zhuo, Qian Lixun, Li Ping, et al. Technologies of dynamic infrared scene projection and its new development[J]. Infrared and Laser Engineering, 2011,40(3): 377-383. (in Chinese) 李卓, 钱丽勋, 李平, 等. 动态红外场景生成技术及其新进展[J]. 红外与激光工程, 2011, 40(3): 377-383.
[14]
[15]
[16]	Reynald Hoskinson, Boris Stoeber. High-dynamic range image projection using an auxiliary MEMS mirror array [J]. Optics Express, 2008, 16(10): 7361-7368.
[17]
[18]	Wang Yunping, Zhao Changming. Dynamic infrared scene simulation system based on the digital micro-mirror device[J]. Infrared and Laser Engineering, 2009, 38 (12): 966-970. (in Chinese) 王云萍, 赵长明. 基于DMD 的动态红外景象仿真系统[J]. 红外与激光工程, 2009, 38(12):966-970.
[19]	Hu Dawei, Li Yanqiu, Liu Xiaolin. Optical design of hyper numerical-aperture Schwarzschild projection lithographic lens[J]. Acta Optica Sinica, 2013, 33(1): 3788-3795. (in Chinese) 胡大伟, 李艳秋, 刘晓林. 超高数值孔径Schwarzschild 投影光刻物镜的光学设计[J]. 光学学报, 2013, 33(1): 3788-3795.

Design of high dynamic range imaging optical system based on DMD

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views