Wavefront testing of optical windows and mirrors

C. Brock; L. Pfeifer; J. Pfund

doi:10.1117/12.2684299

29 November 2023 Wavefront testing of optical windows and mirrors

C. Brock, L. Pfeifer, J. Pfund

Proceedings Volume 12778, Optifab 2023; 127780L (2023) https://doi.org/10.1117/12.2684299
Event: SPIE Optifab, 2023, Rochester, New York, United States

Abstract

Protective glasses are used to protect camera modules and optical sensors from mechanical stress or environmental influences. To ensure consistent quality and avoid image distortion caused by these optics, the transmitted wavefront needs to be controlled and defects like inclusions need to be detected. This way, identification of defective parts and monitoring of the manufacturing process becomes possible. In this paper we discuss transmitted light test setups for wavefront testing of optical windows and the accuracy and stability that can be achieved. Additionally, we show procedures for wavefront-guided alignment of optical systems. The second part of the paper deals with the testing of fast steering mirrors, which are often used in free-space communication or fast scanning applications. The reflected wavefront carries information about the quality of the 3D surface shape. We demonstrate how to assess the mirror quality using a reflected light test setup.

Conference Presentation

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

Citation Download Citation

C. Brock, L. Pfeifer, and J. Pfund "Wavefront testing of optical windows and mirrors", Proc. SPIE 12778, Optifab 2023, 127780L (29 November 2023); https://doi.org/10.1117/12.2684299

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