Deflectometry for ophthalmic optics testing and the impact of test surface orientation

Rebecca Su; Heejoo Choi; Daewook Kim; James Schwiegerling

doi:10.1117/12.2676217

Deflectometry for ophthalmic optics testing and the impact of test surface orientation

Rebecca Su, Heejoo Choi, Daewook Kim, James Schwiegerling

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The effects of the misalignment of a test surface in a deflectometry system were explored. A Stewart Platform Hexapod stage was used to create the intentional misalignment, rotate the test surface position around the X and Y axes as well as displace their Z location. The measured surface maps were analyzed in coefficients of a fit of the surface map to the Zernike coefficients. The Zernike term results were adopted to show the relationship between the induced pose changes and the reconstructed surface map. Such an understanding of the errors in location and orientation and deflectometry measurement results would be beneficial in the future measurement of ophthalmic optics with a deflectometry system.

Original language	English (US)
Title of host publication	Applied Optical Metrology V
Editors	Erik Novak, Christopher C. Wilcox
Publisher	SPIE
ISBN (Electronic)	9781510665583
DOIs	https://doi.org/10.1117/12.2676217
State	Published - 2023
Event	Applied Optical Metrology V 2023 - San Diego, United States Duration: Aug 22 2023 → Aug 23 2023

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	12672
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Applied Optical Metrology V 2023
Country/Territory	United States
City	San Diego
Period	8/22/23 → 8/23/23

Keywords

Stewart Platform
deflectometry
misalignment
ophthalmology
optical testing

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2676217

Cite this

Deflectometry for ophthalmic optics testing and the impact of test surface orientation. / Su, Rebecca; Choi, Heejoo ; Kim, Daewook et al.
Applied Optical Metrology V. ed. / Erik Novak; Christopher C. Wilcox. SPIE, 2023. 1267206 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 12672).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Su, R, Choi, H , Kim, D & Schwiegerling, J 2023, Deflectometry for ophthalmic optics testing and the impact of test surface orientation. in E Novak & CC Wilcox (eds), Applied Optical Metrology V., 1267206, Proceedings of SPIE - The International Society for Optical Engineering, vol. 12672, SPIE, Applied Optical Metrology V 2023, San Diego, United States, 8/22/23. https://doi.org/10.1117/12.2676217

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abstract = "The effects of the misalignment of a test surface in a deflectometry system were explored. A Stewart Platform Hexapod stage was used to create the intentional misalignment, rotate the test surface position around the X and Y axes as well as displace their Z location. The measured surface maps were analyzed in coefficients of a fit of the surface map to the Zernike coefficients. The Zernike term results were adopted to show the relationship between the induced pose changes and the reconstructed surface map. Such an understanding of the errors in location and orientation and deflectometry measurement results would be beneficial in the future measurement of ophthalmic optics with a deflectometry system.",

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AB - The effects of the misalignment of a test surface in a deflectometry system were explored. A Stewart Platform Hexapod stage was used to create the intentional misalignment, rotate the test surface position around the X and Y axes as well as displace their Z location. The measured surface maps were analyzed in coefficients of a fit of the surface map to the Zernike coefficients. The Zernike term results were adopted to show the relationship between the induced pose changes and the reconstructed surface map. Such an understanding of the errors in location and orientation and deflectometry measurement results would be beneficial in the future measurement of ophthalmic optics with a deflectometry system.

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Deflectometry for ophthalmic optics testing and the impact of test surface orientation

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this