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Proceedings Paper

Non-mydriatic confocal retinal imaging using a digital light projector
Author(s): Matthew S. Muller; Ann E. Elsner; Glen Y. Ozawa
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Paper Abstract

A digital light projector is implemented as an integrated illumination source and scanning element in a confocal nonmydriatic retinal camera, the DLP-Cam. To simulate scanning, a series of illumination lines are rapidly projected on the retina. The backscattered light is imaged onto a 2-dimensional rolling shutter CMOS sensor. By temporally and spatially overlapping the illumination lines with the rolling shutter, confocal imaging is achieved. This approach enables a low cost, flexible, and robust design with a small footprint. Qualitative image comparison with commercial non-mydriatic SLOs and fundus cameras shows comparable fine vessel visibility and contrast.

Paper Details

Date Published: 26 March 2013
PDF: 8 pages
Proc. SPIE 8567, Ophthalmic Technologies XXIII, 85670Y (26 March 2013); doi: 10.1117/12.2001305
Show Author Affiliations
Matthew S. Muller, Aeon Imaging, LLC (United States)
Ann E. Elsner, Indiana Univ. (United States)
Glen Y. Ozawa, Univ. of California, Berkeley (United States)


Published in SPIE Proceedings Vol. 8567:
Ophthalmic Technologies XXIII
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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