同心结构的小型化超广角监控镜头设计

为了满足监控镜头的小型化、高像质以及大视场的需求, 利用同心结构的同心透镜, 并依据曲面传感器的发展现状及趋势, 设计了一款同心结构的曲面像面监控镜头光学系统。该监控系统的全视场角可达到140°, 有效焦距为7.88 mm, F数为1.5, 系统总长15.12 mm, 像素可达1 100万。设计结果表明, MTF值在中心视场和0.7视场处均接近衍射极限, 在全视场处均大于0.59; 各个视场的弥散斑半径均小于0.6 μm。相比于已有的监控镜头光学系统, 该设计在大视场范围内保证了优良的像质, 并且实现了小型化。

Abstract

In order to meet the requirement of miniaturization, high image quality and large field of view of monitor lens, based on the monocentric structure lens and the development of curved sensor, a curved surface image monitoring lens optical system was designed. The FOV of the monitoring optical system is 140°, the focal length is 7.88 mm, the F-number is 1.5, the total length is 15.12 mm, and the monitoring lens is up to 11-megapixel. The final design shows that the MTF value is closed to the diffraction limit in the central field of view and the 0.7 field of view, and is greater than 0.59 at the full field of view. The RMS radius of all fields of view are less than 0.6 μm. Compared with the existing monitoring lens optical system, this design achieves excellent image quality in a large field of view with a miniaturization structure.super wide angle

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孟祥月, 王洋, 张磊, 付跃刚, 顾志远, 吕耀文. 同心结构的小型化超广角监控镜头设计[J]. 红外与激光工程, 2018, 47(12): 1218002. Meng Xiangyue, Wang Yang, Zhang Lei, Fu Yuegang, Gu Zhiyuan, Lv Yaowen. Design of miniaturization and super wide angle monitor lens based on monocentric lens[J]. Infrared and Laser Engineering, 2018, 47(12): 1218002.

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