Design of the telecentric lens for two adjacent surfaces simultaneous imaging of semiconductor thermo electric cooler (TEC) components

Xiaohui Chen; Xinsen Wang; Yafan Duan; Cheng Yang; Tingdi Liao

doi:10.1117/12.3017315

15 December 2023 Design of the telecentric lens for two adjacent surfaces simultaneous imaging of semiconductor thermo electric cooler (TEC) components

Xiaohui Chen, Xinsen Wang, Yafan Duan, Cheng Yang, Tingdi Liao

Author Affiliations +

Proceedings Volume 12971, Third International Conference on Optics and Communication Technology (ICOCT 2023); 1297102 (2023) https://doi.org/10.1117/12.3017315
Event: Third International Conference on Optics and Communication Technology (ICOCT 2023), 2023, Changchun, China

Abstract

With the progress of science and technology and the development of industrial automation, the machine vision technology is widely used in the field of industrial automation detection. Especially the size measurement and surface defects detection of some small particles, the machine vision has clear advantages in precision than human eyes. The application of machine vision is developing towards lager magnification and high resolution. Therefore, the matching lens is needed for this application. Aiming at the needs of multi-surface detection of semiconductor thermoElectric cooler (TEC) components, this paper describes a design of a telecentric lens. Using the telecentric lens, two adjacent surfaces of the TEC components can be imaged simultaneously. This lens includes two right angle prisms, a cubic beam splitter, five lenses and a cemented doublet. Its magnification is -1.5 and and the focal length is 65mm. The maximum distortion of the lens is controlled within 0.2% and the MTF is greater than 0.4 at 100lp/mm. The lens can be adapted to 2/3 "CCD, which can meet the requirements of machine vision detection. Through tolerance analysis, this lens has good tolerance and high cost performance.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiaohui Chen, Xinsen Wang, Yafan Duan, Cheng Yang, and Tingdi Liao "Design of the telecentric lens for two adjacent surfaces simultaneous imaging of semiconductor thermo electric cooler (TEC) components", Proc. SPIE 12971, Third International Conference on Optics and Communication Technology (ICOCT 2023), 1297102 (15 December 2023); https://doi.org/10.1117/12.3017315

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KEYWORDS

Modulation transfer functions

Semiconductors

Design and modelling

Tolerancing

Lenses

Distortion

Machine vision

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