Design of imaging system for wide-range laser displacement sensor

SHEN Benlan; XU Xianfeng; YAO Lei; LUAN Shoucheng; WANG Hongmei

doi:10.5768/JAO202243.0301002

Journal of Applied Optics > 2022 > 43(3): 386-391. > DOI: 10.5768/JAO202243.0301002

SHEN Benlan, XU Xianfeng, YAO Lei, LUAN Shoucheng, WANG Hongmei. Design of imaging system for wide-range laser displacement sensor[J]. Journal of Applied Optics, 2022, 43(3): 386-391. DOI: 10.5768/JAO202243.0301002

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Design of imaging system for wide-range laser displacement sensor

1.
School of Rail Transportation, Shandong Jiaotong University, Jinan 250357, China
2.
Xi'an Key Laboratory of Intelligent Expressway Information Fusion and Control, Xi'an 710064, China
3.
Jinan Heavy Industries Group Co.,Ltd., Jinan 250109, China
4.
School of Electronics and Control Engineering, Chang'an University, Xi'an 710064, China

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Received Date: November 29, 2021
Revised Date: March 29, 2022
Available Online: April 12, 2022

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Abstract

Abstract

In order to solve the problems of short reference working distance and small measuring range of laser displacement sensors developed independently in China at present, an imaging optical system for a wide-range laser displacement sensor was designed, which was suitable for the long distance measurement. Based on the laser triangulation principle, combined with specific application requirements, the performance indicators of a wide-range laser displacement sensor and parameters of an imaging optical system were calculated. The five-piece lens structure was selected as the initial structure of the system, and the imaging optical system of wide-range laser displacement sensor was designed with optical design software. The optimal design and performance analysis of the system were completed, and the system with reference working distance of 1 000 mm, measuring range of ±500 mm and resolution of 0.4 mm was developed. The simulation results show that the system can achieve good imaging quality within the measuring range of ±500 mm. The proposed laser displacement sensor imaging system has the advantages of long working distance, wide measuring range and simple structure, which can meet the requirements of wide-range measurement at 1 000 mm.
- laser displacement sensor,
- laser triangulation,
- wide range,
- imaging system,
- optical design

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References (19)

References

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Design of imaging system for wide-range laser displacement sensor