Design of Continuous Zoom Double Telecentric System and Analysis of Cam Curve

Wenwei Ye; Jinxuan Huang; Tianfu Zhou; Feng Lin

doi:10.3788/LOP57.052201

Laser & Optoelectronics Progress, Volume. 57, Issue 5, 052201(2020)

Design of Continuous Zoom Double Telecentric System and Analysis of Cam Curve

Wenwei Ye^1,2、**, Jinxuan Huang^1,2, Tianfu Zhou^1,2, and Feng Lin^1,2、*

¹Fujian Key Laboratory of Photonics Technology, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou, Fujian 350007, China

²Key Laboratory of Medical Optoelectronic Science and Technology, Ministry of Education, College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou, Fujian 350007, China

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Figures & Tables(15)

Fig. 1. Diagram of initial system structure

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Fig. 2. Outline drawing of the optical system

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Fig. 3. MTF and distortion curves at -0.20×. (a) MTF curve of the system; (b) distortion curve of the system

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Fig. 4. MTF and distortion curves at -0.33×. (a) MTF curve of the system; (b) distortion curve of the system

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Fig. 5. MTF and distortion curves at -0.50×. (a) MTF curve of the system; (b) distortion curve of the system

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Fig. 6. Flow chart of Zemax macro language programming method

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Fig. 7. Cam curve obtained by Zemax macro language programming

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Fig. 8. Grouping of zoom systems

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Fig. 9. Cam curve obtained by dynamic optics theory

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Fig. 10. Difference between solution data points obtained by two methods

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Table 1. Imaging chip parameters
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Table 1. Imaging chip parameters
Opticalsize /mm Resolution Pixel size /(μm×μm) Effectivearea /(mm×mm)
11 1392×1040 6.45×6.45 8.80×6.60

Table 2. System design parameters
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Table 2. System design parameters
Parameter Value
Magnification -0.5× to -0.2×
Object field of view /mm 22 to 55
Image field of view /mm 11
Working distance /mm 130
Distortion <0.1%
Telecentricity <0.1°

Table 3. Multiple structure operand settings
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Table 3. Multiple structure operand settings
Active Config 1 Config 2 Config 3
APER 0.010 0.015 0.025
YFIE 27.500 16.500 11.000
THIC 10 23.000 14.000 1.200
THIC 14 12.000 3.700 0.650
TSP2 19 64.720 64.720 64.720

Table 4. Partial sampling point data obtained by software method
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Table 4. Partial sampling point data obtained by software method
Parameter Value
Q₁ 0.100 0.200 0.300 0.400 0.500 ... 21.700 21.800 21.900 22.000 22.100
Q₂ 0.112 0.227 0.336 0.449 0.561 ... 31.834 32.199 32.592 33.028 33.509

Table 5. Partial sampling point data obtained by dynamic optics theory
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Table 5. Partial sampling point data obtained by dynamic optics theory
Parameter Value
Q₁ 0.100 0.200 0.300 0.400 0.500 ... 21.700 21.800 21.900 22.000 22.100
Q₂ 0.112 0.225 0.337 0.450 0.563 ... 31.932 32.304 32.704 33.148 33.648

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Wenwei Ye, Jinxuan Huang, Tianfu Zhou, Feng Lin. Design of Continuous Zoom Double Telecentric System and Analysis of Cam Curve[J]. Laser & Optoelectronics Progress, 2020, 57(5): 052201

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