Document Type

Article

Language

eng

Format of Original

10 p.

Publication Date

11-2012

Publisher

Optical Society of America

Source Publication

Optics Express

Source ISSN

1094-4087

Original Item ID

doi: 10.1364/OE.20.026596; PubMed Central: PMCID 3601596

Abstract

Adaptive optics (AO) ophthalmoscopes with small fields of view have limited clinical utility. We propose to address this problem in reflective instruments by incorporating a viewfinder pupil relay designed by considering pupil and image centering and conjugation. Diverting light from an existing pupil optical relay to the viewfinder relay allows switching field of view size. Design methods that meet all four centering and conjugation conditions using either a single concave mirror or with two concave mirrors forming an off-axis afocal telescope are presented. Two different methods for calculating the focal length and orientation of the concave mirrors in the afocal viewfinder relay are introduced. Finally, a 2.2 × viewfinder mode is demonstrated in an AO scanning light ophthalmoscope.

Comments

Accepted version. Optics Express, Vol. 20, No. 24 (November 2012): 26596-26605. DOI. © 2012 Optical Society of America. Used with permission.

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