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13 March 2024 Characterization and optical correction of beam wander at the pupil plane in point-scanning ophthalmic OCT systems
Amit Narawane, Pablo Ortiz, Mark Draelos, Ryan P. McNabb, Anthony N. Kuo, Joseph A. Izatt
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Proceedings Volume PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII; PC128300L (2024) https://doi.org/10.1117/12.3005602
Event: SPIE BiOS, 2024, San Francisco, California, United States
Abstract
Point-scanning OCT systems often use a pair of sequential, single-axis galvanometer scanners to acquire volumetric data. This can introduce uncertainty in the beam position at the ocular pupil plane, an effect known as beam wander or pupil wobble, which can distort the resulting images. We propose a new approach to characterize and optically correct the pupil wobble with an additional scanning mirror placed anti-conjugate to the pupil plane. We evaluate this method by modeling the pattern of pupil wobble present in a research OCT system both theoretically and experimentally, and correcting for it with the proposed method.
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Amit Narawane, Pablo Ortiz, Mark Draelos, Ryan P. McNabb, Anthony N. Kuo, and Joseph A. Izatt "Characterization and optical correction of beam wander at the pupil plane in point-scanning ophthalmic OCT systems", Proc. SPIE PC12830, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXVIII, PC128300L (13 March 2024); https://doi.org/10.1117/12.3005602
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KEYWORDS
Optical coherence tomography
Beam wander
Mirrors
Galvanometers
Image resolution
Mirror surfaces
Optical scanning systems
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