Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Patent
1998-03-18
1999-09-07
Manuel, George
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
A61B 310
Patent
active
059495200
ABSTRACT:
A scanning laser ophthalmoscope with a wide field of view provides a color image of an interior portion of a patient's eye at varying depths while the patient is simultaneously presented with a fixation target designed to probe his visual function. The scanning laser ophthalmoscope includes an illumination system, a capturing and detection system and a target image generating system wherein the optical paths of each of these systems is separated by one or more beam splitters to prevent a chief ray from the patient's eye from being blocked so as to eliminate shading off effects in the captured image. A simplified scanning system is employed that includes only one scanner with a moveable reflective surface. A passive, stationary optical element is employed to generate a line of light from a point of light that impinges on the optical element, the line of light being scanned in a direction perpendicular to the line by the single scanner.
REFERENCES:
patent: 4768874 (1988-09-01), Webb et al.
patent: 5633694 (1997-05-01), Mihashi et al.
patent: 5673097 (1997-09-01), Heacock
Manuel George
Odyssey Optical Systems, LLC
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