Design of 3× plastic zoom lens with all-movable components

Table 1. Design specifications for zoom system
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Table 1. Design specifications for zoom system
指标要求
有效焦距/mm 22.72~68.16
最大像面/mm 16.98
F数 2.4~4.5
光学后焦/mm ≥1
工作波长/mm 470~650
畸变 ≤2%
考察物距/m 10，1，0.2
考察MTF/（lp·mm^-1） 80，160

Table 2. Final lens data

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Table 2. Final lens data

曲面序号	曲面类型	曲率半径/mm	厚度/mm	材料
0（物面）	球面	无限
1	Q型非球面	-71.897	1.237	APL5014DP
2	Q型非球面	45.553	0.117
3	球面	26.246	4.344	APL5014DO
4	球面	-124.48	0.260
5	球面	14.496	4.960	ARTON_D4532
6	球面	72.713	5.441
7	球面	-34.076	1.417	EP5000
8	球面	23.414	2.372	APL5014DP
9	球面	-126.977	1.530
10（光阑）	球面	无限	0.611
11	球面	56.169	1.424	E48R
12	球面	5.101	4.142	ARTON_D4540
13	球面	-43.920	0.942
14	Q型非球面	-16.487	1.520	APL5014DP
15	Q型非球面	20.434	1.444
16	Q型非球面	-122.992	2.592	OKP-1
17	Q型非球面	-23.604	29.084
18（像面）	球面	无限	-

Table 3. Initial tolerance grade
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Table 3. Initial tolerance grade
公差类型给定值
光圈数 2
厚度/mm 0.037 5
表面倾斜/（′） 1
表面偏心/mm 0.01
元件倾斜/（′） 1
元件偏心/mm 0.01
不规则度 0.5
折射率 0.001
阿贝误差/% 0.1

Table 4. Tolerance grade variation table
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Table 4. Tolerance grade variation table
敏感公差项缩紧后公差
表面4，6，11，12厚度 0.012 5 mm
表面1，2，14偏心 0.005 mm
表面5，11，12折射率 0.000 5

Table 5. Monte Carlo analysis results of average diffraction MTF at 80% yield
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Table 5. Monte Carlo analysis results of average diffraction MTF at 80% yield
物距焦段 80 lp/mm处 160 lp/mm处
10 m短焦 0.418 0.230
10 m中焦 0.384 0.207
10 m长焦 0.325 0.143
1 m短焦 0.423 0.236
1 m中焦 0.393 0.190
1 m长焦 0.298 0.133
0.2 m短焦 0.334 0.157
0.2 m中焦 0.236 0.119

Table 6. Variation of surface thickness during focusing under varying object distances

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Table 6. Variation of surface thickness during focusing under varying object distances

焦距	10 m			1 m			0.2 m
焦距	S₆厚度	S₁₃厚度	后截距	S₆厚度	S₁₃厚度	后截距	S₆厚度	S₁₃厚度	后截距
短焦	3.42	8.08	1.00	3.35	8.19	1.43	3.34	8.22	3.43
中焦	4.77	2.42	16.91	4.64	2.59	18.79	4.34	2.96	29.98
长焦	5.44	0.94	29.08	5.37	1.03	33.71	-	-	-

Table 7. Optical property settings for each surface in ghost image analysis
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Table 7. Optical property settings for each surface in ghost image analysis
表面类型反射率透过率吸收率
透镜侧表面 0% \ 100%
透镜通光表面 10% 90% \

Table 8. Ratio of ghost image to maximum irradiance of image point at different focal lengths and field angles
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Table 8. Ratio of ghost image to maximum irradiance of image point at different focal lengths and field angles
焦距零视场三分之一视场三分之二视场最大视场
短焦 0.106 14 0.042 73 0.067 15 0.108 00
中焦 0.019 51 0.004 36 0.003 70 0.005 73
长焦 0.032 21 0.012 27 0.010 46 0.002 32

Table 9. Surface combinations produce relatively obvious ghost images under different focal lengths
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Table 9. Surface combinations produce relatively obvious ghost images under different focal lengths
焦距表面组合鬼像与像点最大辐照度之比
短焦 S₁₅-S₁₄ 0.118 8×10^-3
短焦 S₁₆-S₁₅ 0.118 6×10^-3
中焦 S₁₀-S₄ 0.023 8×10^-3
长焦 S₄-S₁ 0.121 6×10^-3
长焦 S₁₀-S₄ 0.004 0×10^-3

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Lan LAN, Zidong WANG, Zhengyao FU, Shenyu ZHAO, Dewen CHENG, Tong YANG. Design of 3× plastic zoom lens with all-movable components[J]. Optics and Precision Engineering, 2025, 33(13): 2008

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Paper Information

Category:

Received: Apr. 8, 2025

Accepted: --

Published Online: Aug. 28, 2025

The Author Email: Dewen CHENG (cdwlxk@bit.edu.cn)

DOI:10.37188/OPE.20253313.2008

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Design specifications for zoom system

Table 1. Design specifications for zoom system

Table 2. Final lens data

Table 2. Final lens data

Table 3. Initial tolerance grade

Table 3. Initial tolerance grade

Table 4. Tolerance grade variation table

Table 4. Tolerance grade variation table

Table 5. Monte Carlo analysis results of average diffraction MTF at 80% yield

Table 5. Monte Carlo analysis results of average diffraction MTF at 80% yield

Table 6. Variation of surface thickness during focusing under varying object distances

Table 6. Variation of surface thickness during focusing under varying object distances

Table 7. Optical property settings for each surface in ghost image analysis

Table 7. Optical property settings for each surface in ghost image analysis

Table 8. Ratio of ghost image to maximum irradiance of image point at different focal lengths and field angles

Table 8. Ratio of ghost image to maximum irradiance of image point at different focal lengths and field angles

Table 9. Surface combinations produce relatively obvious ghost images under different focal lengths

Table 9. Surface combinations produce relatively obvious ghost images under different focal lengths