Optical design of a wide linear field-of-view, high resolution, and compact f-theta laser scanning system

Tian Zhang; Hailong Chen; Wenfang Luo; Hongye Du; Dewen Cheng; Yongtian Wang

doi:10.1117/12.2643829

20 December 2022 Optical design of a wide linear field-of-view, high resolution, and compact f-theta laser scanning system

Tian Zhang, Hailong Chen, Wenfang Luo, Hongye Du, Dewen Cheng, Yongtian Wang

Author Affiliations +

Proceedings Volume 12315, Optical Design and Testing XII; 123151J (2022) https://doi.org/10.1117/12.2643829
Event: SPIE/COS Photonics Asia, 2022, Online Only

Conference Poster

Abstract

A f-theta laser scanning optical system with wide scanning angle, high resolution and compactness is proposed. Specifications of the system are analyzed and calculated. To simplify the optical layout and improve the optical performance, freeform surfaces are used to describe the shape of the lens. The method about how to create a user-defined surface in the optical design software is introduced. The optimization strategy and implementation method of freeform surface are mentioned. The design result achieves a f-theta laser scanning optical system with a field-of-view of ±55.6°, a resolution higher than 600 dots per inch, and a total length less than 150mm. The modulation transfer function of the system is close to the diffraction limit and the linear distortion is less than 3μm.

Conference Presentation

Citation Download Citation

Tian Zhang, Hailong Chen, Wenfang Luo, Hongye Du, Dewen Cheng, and Yongtian Wang "Optical design of a wide linear field-of-view, high resolution, and compact f-theta laser scanning system", Proc. SPIE 12315, Optical Design and Testing XII, 123151J (20 December 2022); https://doi.org/10.1117/12.2643829

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