Design of Lightweight and Miniaturized Zoom Objective Optical System with Wide Band

Yumei Chang; Jinsong Wang

doi:10.3788/AOS221552

Acta Optica Sinica, Volume. 43, Issue 8, 0822029(2023)

Design of Lightweight and Miniaturized Zoom Objective Optical System with Wide Band

Yumei Chang^1,2 and Jinsong Wang^1,2、*

Author Affiliations

¹School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, Jilin, China

²Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, Guangdong, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(11)

Fig. 1. Zoom and compensation movement diagram of four-group three-linkage optical system

Download full size

Fig. 2. Two-dimensional diagrams of optical systems. (a) Short focal length (focal length is 25 mm); (b) secondary short focal length (focal length is 55 mm); (c) middle focal length (focal length is 135 mm); (d) long focal length (focal length is 250 mm)

Download full size

Fig. 3. MTF curves of zoom optical system in 0.48-0.68 μm. (a) Short focal length (focal length is 25 mm); (b) secondary short focal length (focal length is 55 mm); (c) middle focal length (focal length is 135 mm); (d) long focal length (focal length is 250 mm)

Download full size

Fig. 4. MTF curves of zoom optical system in 0.80-0.90 μm. (a) Short focal length (focal length is 25 mm); (b) secondary short focal length (focal length is 55 mm); (c) middle focal length (focal length is 135 mm); (d) long focal length (focal length is 250 mm)

Download full size

Fig. 5. Spot diagrams of zoom optical system in 0.48-0.68 μm. (a) Short focal length (focal length is 25 mm); (b) secondary short focal length (focal length is 55 mm); (c) middle focal length (focal length is 135 mm); (d) long focal length (focal length is 250 mm)

Download full size

Fig. 6. Spot diagrams of zoom optical system in 0.80-0.90 μm. (a) Short focal length (focal length is 25 mm); (b) secondary short focal length (focal length is 55 mm); (c) middle focal length (focal length is 135 mm); (d) long focal length (focal length is 250 mm)

Download full size

Fig. 7. Cam curve of zoom lens

Download full size

Table 1. Related optical indicators

View table

Table 1. Related optical indicators

Parameter	Specification
Zoom ratio	1-10
Work wavelength /μm	0.48-0.68，0.80-0.90
Operating range /km	≥2
Horizontal field angle /（°）	≥20（detection） ≥2（recognition）
Overall length /mm	≤250
F-number	≤7

Table 2. Optical parameters of optical system at different focal lengths
View table
Table 2. Optical parameters of optical system at different focal lengths
Parameter Value
EFL：25 mm EFL：55 mm EFL：135 mm EFL：250 mm
F-number 5 5 5 6.5
Field of view /（°） 13.39 6.25 2.60 1.38
Relative illumination ≥0.56 ≥0.45 ≥0.53 ≥0.40
Distortion /% -0.093 -0.812 -1.390 0.819

Table 3. Focusing amount in 0.80-0.90 μm at different focal length position
View table
Table 3. Focusing amount in 0.80-0.90 μm at different focal length position
Focus length /mm 25 55 135 250
Focusing amount /mm +0.26 +0.26 +0.26 +0.26

Table 4. Tolerance analysis results

View table

Table 4. Tolerance analysis results

Yield rate /%	MTF of short focal length	MTF of secondary short focal length	MTF of middle focal length	MTF of long focal length
90	>0.278	>0.312	>0.375	>0.339
80	>0.324	>0.362	>0.440	>0.391
50	>0.417	>0.452	>0.533	>0.472
20	>0.511	>0.558	>0.650	>0.563
10	>0.564	>0.639	>0.717	>0.629

Tools

Get Citation

Copy Citation Text

Yumei Chang, Jinsong Wang. Design of Lightweight and Miniaturized Zoom Objective Optical System with Wide Band[J]. Acta Optica Sinica, 2023, 43(8): 0822029

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites