A novel design of optical path length magnifier for ocular axial length measurement in an optical biometer

Hsuan-Hao Chao; Wai W. Wang; Sung-Yang Wei

doi:10.1117/12.2660148

8 December 2022 A novel design of optical path length magnifier for ocular axial length measurement in an optical biometer

Hsuan-Hao Chao, Wai W. Wang, Sung-Yang Wei

Author Affiliations +

Proceedings Volume 12480, Optical Technology and Measurement for Industrial Applications Conference 2022; 1248003 (2022) https://doi.org/10.1117/12.2660148
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

A novel design of an optical path length modulator is reported for ocular axial length measurement in an optical biometer. The relative optical path length modulator is designed to achieve a large optical path length change linearly over 52 mm with a tiny, short translation stage movement of 3 mm to cover the entire axial lengths of all patients from infant to adult in an optical biometer. This design demonstrates a good benefit for the long-range scanning of ocular axial length from cornea to retina with small translation stage movement of reference arm.

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Hsuan-Hao Chao, Wai W. Wang, and Sung-Yang Wei "A novel design of optical path length magnifier for ocular axial length measurement in an optical biometer", Proc. SPIE 12480, Optical Technology and Measurement for Industrial Applications Conference 2022, 1248003 (8 December 2022); https://doi.org/10.1117/12.2660148

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KEYWORDS

Mirrors

Eye

Optical testing

Optical design

Biomedical optics

Coherence (optics)

Modulators

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