Optimizing deflectometry to suppress ghost signal noise

Byeongjoon Jeong; Heejoo Choi; Sotero Ordones; Daewook Kim

doi:10.1117/12.2677686

4 October 2023 Optimizing deflectometry to suppress ghost signal noise

Byeongjoon Jeong, Heejoo Choi, Sotero Ordones, Daewook Kim

Proceedings Volume 12677, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV; 1267709 (2023) https://doi.org/10.1117/12.2677686
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

We introduce a modifying deflectometry method to reduce parasitic ghost signal noises in transparent optical testing. The proposed approach shows adjusting the screen distance and displayed screen pattern to shrink the light from undesired surfaces’ reflection. The flexibility of deflectometry optical layout allows huge adjustment availability while keeping the optical testing capability and suppressing the parasite signal. Moreover, the customized fringe pattern could shine the desired surface only effectively. Ray tracing simulation shows the best system formation, and the modified experimental setup confirms the proposed method for various types of optics testing. Lastly, we discuss the limitations of the method.

Conference Presentation

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

Citation Download Citation

Byeongjoon Jeong, Heejoo Choi, Sotero Ordones, and Daewook Kim "Optimizing deflectometry to suppress ghost signal noise", Proc. SPIE 12677, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV, 1267709 (4 October 2023); https://doi.org/10.1117/12.2677686

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