Translator Disclaimer
11 February 2011 A compact adaptive optics scanning laser ophthalmoscope with high-efficiency wavefront correction using dual liquid crystal on silicon - spatial light modulator
Author Affiliations +
Proceedings Volume 7885, Ophthalmic Technologies XXI; 788515 (2011) https://doi.org/10.1117/12.873671
Event: SPIE BiOS, 2011, San Francisco, California, United States
Abstract
This paper describes a compact adaptive optics scanning laser ophthalmoscope (AO-SLO) for high-resolution retinal imaging. The key features of this system are: (1) incorporation of a dual liquid crystal on silicon spatial light modulator (LCOS-SLM) as a wavefront compensation device and (2) sequential processing of aberration measurement/compensation and SLO imaging. The dual LCOS-SLM can compensate higher order aberration with high stabilization and realizes high-efficiency wavefront correction without polarization dependence. The sequential processing can fully utilize the power of the light to a retina only for the imaging, so the system produces high-contrast SLO images. The sequential processing also enables the use of lenses in ocular optics, giving a compact optical system with focus correction lenses for an eye with high reflective error. The optical system occupies only 500 mm x 370 mm, which is achieved by axially symmetric aspherical mirrors arranged off-axis and lenses in ocular optics. With this system, it is possible to observe photoreceptors at the parafoveal region of human healthy subjects at 32 or 64 frames per second.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Futoshi Hirose, Koji Nozato, Ken-ichi Saito, and Yasuyuki Numajiri "A compact adaptive optics scanning laser ophthalmoscope with high-efficiency wavefront correction using dual liquid crystal on silicon - spatial light modulator", Proc. SPIE 7885, Ophthalmic Technologies XXI, 788515 (11 February 2011); https://doi.org/10.1117/12.873671
PROCEEDINGS
7 PAGES


SHARE
Advertisement
Advertisement
Back to Top