Design and Analysis of Ultra-Short Focal Underwater Wide Angle Monitoring Lens

Table 1. Parameters of IMX675 sensor
View table
Table 1. Parameters of IMX675 sensor
Parameter Value
Effective pixels /（pixel×pixel） 2680×1984
Minimum cell size /μm 2.0
Diagonal size /mm 6.53
Nyquist frequency /（lp·mm^-1） 250

Table 2. Optical parameters of ultra-short focal underwater wide-angle monitoring lens
View table
Table 2. Optical parameters of ultra-short focal underwater wide-angle monitoring lens
Parameter Value
Total length /mm 32.8
Field angle /（°） 95
Focal length /mm 3.1
Back working distance /mm 5.3
Maximum image height /mm 6.6
F-number 2.2

Table 3. Structural parameters of ultra-short focal underwater wide-angle monitoring lens

View table

Table 3. Structural parameters of ultra-short focal underwater wide-angle monitoring lens

Serial number	Surface type	Focal length /mm	Thickness /mm	Material	Mechanical half diameter /mm
1	Standard		3.00	H-K9L	12.27
2	Standard	Infinity	0.30		12.27
3	Standard		0.90	H-QK1	7.67
4	Standard	-10.37	3.15		7.67
5	Even asphere		0.92	D-PK3	4.33
6	Even asphere	-7.66	3.10		4.33
7	Standard		2.77	H-TF8	3.75
8	Standard	12.03	4.78		3.75
9（stop）	Standard		0.07		1.95
10	Standard		1.61	H-ZK21	2.60
11	Standard	5.93	1.46	H-ZF71	2.60
12	Standard	-9.37	1.73		2.60
13	Even asphere		2.76	D-QK3L	3.44
14	Even asphere	10.87	0.26		3.44
15	Standard		0.65	H-K9L	3.24
16	Standard	Infinity	5.31		3.24
17（image）	Standard				3.31

Table 4. MTF values of the system at 0.707 field of view at different temperatures
View table
Table 4. MTF values of the system at 0.707 field of view at different temperatures
Temperature /℃ MTF value
0 0.409
10 0.412
20 0.414
30 0.416
40 0.416
50 0.416

Table 5. Tolerance analysis results
View table
Table 5. Tolerance analysis results
Percentage /% MTF at the Nyquist frequency
90 >0.24
80 >0.25
50 >0.29
20 >0.32
10 >0.37

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Feng Hu, wei Ding, Jiegen Yang, Liner Zou. Design and Analysis of Ultra-Short Focal Underwater Wide Angle Monitoring Lens[J]. Laser & Optoelectronics Progress, 2023, 60(21): 2122002

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Paper Information

Category: Optical Design and Fabrication

Received: Oct. 10, 2022

Accepted: Nov. 16, 2022

Published Online: Oct. 26, 2023

The Author Email: Zou Liner (Linerzou@ncu.edu.cn)

DOI:10.3788/LOP222731

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Parameters of IMX675 sensor

Table 1. Parameters of IMX675 sensor

Table 2. Optical parameters of ultra-short focal underwater wide-angle monitoring lens

Table 2. Optical parameters of ultra-short focal underwater wide-angle monitoring lens

Table 3. Structural parameters of ultra-short focal underwater wide-angle monitoring lens

Table 3. Structural parameters of ultra-short focal underwater wide-angle monitoring lens

Table 4. MTF values of the system at 0.707 field of view at different temperatures

Table 4. MTF values of the system at 0.707 field of view at different temperatures

Table 5. Tolerance analysis results

Table 5. Tolerance analysis results