Laser & Optoelectronics Progress, Volume. 57, Issue 1, 012204(2020)
Design of Small Distortion Phone Lens Based on Iris Recognition
To obtain high-quality iris images, a phone iris-recognition lens is designed using the optical design software ZEMAX in this study. The phone lens comprises four plastic aspheric lenses. The total working distance, total length, and F number of the phone lens are 200--330 mm, 4.09 mm, and 2.4, respectively. In the design results, the modulation transfer function at 275 mm exceeds 0.4 at one-half the Nyquist frequency of the lens. The distortion is lower than 0.6%, and the relative illumination exceeds 83%. Image evaluation and tolerance analysis confirm that the system has small distortion, a large variable working distance, excellent image quality, and stable performance, thus meeting the processing requirements of iris recognition lenses.
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Xuelian Yu, Bingmei Guo, Xiufang Li, Tao Shen. Design of Small Distortion Phone Lens Based on Iris Recognition[J]. Laser & Optoelectronics Progress, 2020, 57(1): 012204
Category: Optical Design and Fabrication
Received: Jun. 14, 2019
Accepted: Jul. 5, 2019
Published Online: Jan. 3, 2020
The Author Email: Yu Xuelian (yuxuelian@hrbust.edu.cn)