Citation: | LIN Zhiqiang, WU Yuting, WANG Min. Design of fish eye lens with large target surface and heat dissipation difference[J]. Journal of Applied Optics, 2023, 44(4): 736-741. DOI: 10.5768/JAO202344.0401005 |
In order to meet the application requirements of high-definition fish eye lens in the information age, a large-aperture glass plastic hybrid fish eye lens optical system matching a 16 mm (1") CCD was designed by using CODE V and ZEMAX optical software. The system provides clear imaging in the spectrum range of 486 nm~656 nm and 850 nm. The field angle is 210°, the F number is 2.0, the focal length is 4.1 mm, the F-Theta distortion is less than 7%, and the edge illumination is more than 68%. At normal temperature, the MTF of 0.707 field of view is greater than 0.5 and the MTF of full field of view is greater than 0.35 at the Nyquist frequency of 91 lp/mm. At −40 ℃~75 ℃, the MTF of 0.707 field of view is greater than 0.3, and the MTF of full field of view is greater than 0.2, which can meet the requirements of high and low temperature environment. The design adopts a 7-piece glass plastic hybrid structure, which has the characteristics of large field of view angle, large target surface and large aperture. It can be widely used in high-definition camera, security monitoring, industrial production and other fields.
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