激光与光电子学进展, 2017, 54 (1): 012204, 网络出版: 2017-01-17
虹膜识别镜头的光学设计 下载: 825次
Optical Design of Iris Recognition Lens
摘要
设计了一款适用于手机的虹膜识别镜头, 该镜头包含3片塑胶非球面透镜, 焦平面阵列探测器中互补金属氧化物半导体(CMOS) 芯片的像素大小为1.12 μm。所设计镜头的F数为2.0、全视场角为32.6°、总长为4.0 mm。最佳工作距离为320 mm时, 在1/2奈奎斯特频率处各视场的调制传递函数(MTF)大于0.45, 光学畸变在1.2%以内, 相对照度大于87%。该光学系统结构简单、体积小、像质优良。
Abstract
An iris recognition lens composed of three plastic aspheric lens for mobile phone application is designed. The pixel size of focal-plan array detector complementary metal oxide semiconductor (CMOS) chip is 1.12 μm. The F number of the designed lens is 2.0, the field of view is 32.6°, and the total length is 4.0 mm. At the optimal work distance of 320 mm, the modulation transfer functions (MTF) of all fields at 1/2 Nyquist frequency are larger than 0.45, the optical distortion is less than 1.2%, and the relative illumination is higher than 87%. The optical system has the advantages of simple structure, small volume and excellent image quality.
高永锋, 张变, 宋光辉, 熊鹏, 朱佳巍, 许孝芳. 虹膜识别镜头的光学设计[J]. 激光与光电子学进展, 2017, 54(1): 012204. Gao Yongfeng, Zhang Bian, Song Guanghui, Xiong Peng, Zhu Jiawei, Xu Xiaofang. Optical Design of Iris Recognition Lens[J]. Laser & Optoelectronics Progress, 2017, 54(1): 012204.