Design of Small Distortion Phone Lens Based on Iris Recognition

Xuelian Yu; Bingmei Guo; Xiufang Li; Tao Shen

doi:10.3788/LOP57.012204

Laser & Optoelectronics Progress, Volume. 57, Issue 1, 012204(2020)

Design of Small Distortion Phone Lens Based on Iris Recognition

Xuelian Yu^1、*, Bingmei Guo¹, Xiufang Li^1,2, and Tao Shen¹

¹Heilongjiang Provincial Key Laboratory of Quantum Manipulation & Control, School of Science, Harbin University of Science and Technology, Harbin, Heilongjiang 150080, China;

²Institute of Optoelectronics, Daheng New Epoch Technology, Inc., Beijing 100085, China

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Figures & Tables(11)

Fig. 1. Initial structure

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Fig. 2. MTF curves of initial structure

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Fig. 3. Optimized structure layout

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Fig. 4. MTF at 1/2 Nyquist frequency with working distance of 160-500 mm

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Fig. 5. Field curvature and optics distortion

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Fig. 6. Relative illumination curve

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Fig. 7. MTF curves obtained by tolerance analysis

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Table 1. Parameters of CMOS
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Table 1. Parameters of CMOS
Item Parameter
Effective pixel number /(pixel×pixel) 1920×1080
Image size /(μm×μm) 2688×1512
Min pixel size /(μm×μm) 1.4×1.4
Image height /mm 3.08

Table 2. Design parameters
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Table 2. Design parameters
Totallength /mm F number Field ofview /(°) Back focallength /mm Relativeillumination Opticaldistortion MTF
s=89 lp·mm^-1 s=178 lp·mm^-1
<4.2 2.4 <44 >0.7 >65% <3% >0.5 >0.2

Table 3. Setting table of tolerance parameters
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Table 3. Setting table of tolerance parameters
Type Value
Radius /mm 0.002
Thickness /mm 0.003
Decenter /mm 0.002
Tilt /(°) 0.15
S+A Irreg 0.1
Abbe /% 0.5

Table 4. Product benign rate obtained by Monte Carlo tolerance analysis
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Table 4. Product benign rate obtained by Monte Carlo tolerance analysis
Benign rate MTF value
≥98% 0.596468620
≥90% 0.623181071
≥50% 0.675887200
≥10% 0.702037880
≥2% 0.707773626

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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

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