Infrared and Laser Engineering, Volume. 45, Issue 4, 418002(2016)
Minitype optical system development of stereo camera
A minitype optical system used in stereo camera was designed based on civilian low cost stereo imaging requirement, the optical system aimed to achieve 50 m ground sampling distance at 250 km orbit altitude. This optical system can both achieve stereo imaging function and large format array imaging function combined with a CMOS. The system has a focal length of 32 mm, a field of view of 66°, an F-number of 6.8 and a working wavelength range of 450-750 nm. The optical system consists of two parts of optical configurations-retrofocus lens and apochromatic microscope. The system design value of MTF achieves 0.49@78 lp/mm, distortion value less than 0.1%, the relative illumination of marginal field of view achieves 0.83, principal ray incoming angle in image plane of marginal field less than 15°. The testing result after optical mounting centering alignment shows that the MTF of each field of view all achieve 0.4@80 lp/mm, which meets the static MTF requirement in laboratory. This optical system has better performances in imaging width and distortion value compared with other international famous stereo cameras.
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Meng Qingyu, Dong Jihong, Wang Dong, Zhao Weiguo. Minitype optical system development of stereo camera[J]. Infrared and Laser Engineering, 2016, 45(4): 418002
Category: 光学设计及仿真
Received: Aug. 5, 2015
Accepted: Sep. 7, 2015
Published Online: May. 11, 2016
The Author Email: Qingyu Meng (mengqy@ciomp.ac.com)