Design of ultra-short throw ratio lens using annularly stitched aspheric surface

Hailong Chen, Dewen Cheng*, Yongtian Wang

*Corresponding author for this work

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

Abstract

Stitched surfaces have the advantages of high degrees of freedom and flexibility, which can improve the performance of imaging optical system while reducing volume and weight. In this paper, a new type of surface, called annularly stitched aspheric surface (ASAS), is demonstrated. Firstly, the definition of ASAS is given, and it meets the C1 continuity condition. Then, a high-precision conversion method from traditional aspherical surface to ASAS is proposed to establish the initial system with this novel surface. The optimization strategy and implementation method are explained. Special constraints that are needed when optimize the system with ASAS is also mentioned. Finally, the ASAS is applied to the design and an ultra-short throw (UST) ratio projector objective lens is optimized. The total length of the optimized system is only 155mm, the maximum distortion value is only 1.36%, and MTF value of full field of view at 66lp/mm is higher than 0.3. The result shows that this new surface type can increase the degrees of freedom and flexibility to optical system, verifying the feasibility of ASAS.

Original languageEnglish
Title of host publicationAOPC 2021
Subtitle of host publicationDisplay Technology
EditorsYongtian Wang
PublisherSPIE
ISBN (Electronic)9781510650015
DOIs
Publication statusPublished - 2021
Event2021 Applied Optics and Photonics China: Display Technology, AOPC 2021 - Beijing, China
Duration: 20 Jun 202122 Jun 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12063
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2021 Applied Optics and Photonics China: Display Technology, AOPC 2021
Country/TerritoryChina
CityBeijing
Period20/06/2122/06/21

Keywords

  • Annularly stitched aspheric surface
  • Optical design
  • Surface description
  • Ultra-short throw ratio projector

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Chen, H., Cheng, D., & Wang, Y. (2021). Design of ultra-short throw ratio lens using annularly stitched aspheric surface. In Y. Wang (Ed.), AOPC 2021: Display Technology Article 1206308 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12063). SPIE. https://doi.org/10.1117/12.2606174