Transmission sphere calibration using a Fresnel zone CGH

Robert E. Parks; Logan R. Graves; Chunyu Zhao; Benjamin Anjakos

doi:10.1117/12.2690822

29 November 2023 Transmission sphere calibration using a Fresnel zone CGH

Robert E. Parks, Logan R. Graves, Chunyu Zhao, Benjamin Anjakos

Proceedings Volume 12778, Optifab 2023; 127780P (2023) https://doi.org/10.1117/12.2690822
Event: SPIE Optifab, 2023, Rochester, New York, United States

Abstract

There are two basic methods of calibrating a transmission sphere without use of an external artifact, statistical or shear. In the low NA range where shearing is the preferred method, the calibration is difficult to perform precisely because it is hard to measure the shear distance or rotation of the reference surface precisely. If the reference is a Fresnel zone CGH, then there are two centers of curvature that provide an axis that can be located precisely. We show theoretically and experimentally an absolute method of calibrating a TS using one rotational and one translational shear.

Conference Presentation

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

Citation Download Citation

Robert E. Parks, Logan R. Graves, Chunyu Zhao, and Benjamin Anjakos "Transmission sphere calibration using a Fresnel zone CGH", Proc. SPIE 12778, Optifab 2023, 127780P (29 November 2023); https://doi.org/10.1117/12.2690822

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