Ophthalmoscope

Details Ophthalmoscope Ophthalmoscope

1992-01-21

1993-12-07

Arnold, Bruce Y.

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Objective type

351205, 351221, A61B 310

Patent

active

052687112

ABSTRACT:
The invention is directed to an ophthalmoscope and especially a confocal raster ophthalmoscope wherein the scanning unit can be imaged on the pupil of the eye with different imaging scales. The switchover between the imaging scales is realized by a displacement of a spherical concave mirror of the ophthalmoscope. The astigmatism of the concave mirror is changed because of the changed imaging scale and is compensated in that the displacement of the concave mirror has a displacement component perpendicular to the main axis of this mirror.

REFERENCES:
patent: 4765730 (1988-08-01), Webb
patent: 4886351 (1989-12-01), Sabban et al.
"Fundamentals of Optics" by Francis A. Jenkins and Harvey E. White, Mc-Graw-Hill, 1950, pp. 91 and 92.

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