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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationOptical Design and Testing XII
EditorsYongtian Wang, Tina E. Kidger, Rengmao Wu
PublisherSPIE
ISBN (Electronic)9781510656963
DOIs
Publication statusPublished - 2023
EventOptical Design and Testing XII 2022 - Virtual, Online, China
Duration: 5 Dec 202211 Dec 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12315
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Design and Testing XII 2022
Country/TerritoryChina
CityVirtual, Online
Period5/12/2211/12/22

Keywords

  • Laser scanning
  • f-theta lens
  • freeform surface
  • optical design

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