Patent ID: 7360896
Filing Date: 2008-04-22
Classification: A61B

Abstract:
1. A fundus camera for obtaining a retinal image of an eye comprising: a light source; a ring aperture to form a ring illumination, the ring aperture conjugate to a cornea of the eye; a first rotating mask providing a moving aperture to provide a portion of the ring illumination at a time, the first rotating mask conjugate to the iris of the eye; an aperture mirror for redirecting the ring illumination from the first rotating mask toward the eye; an objective lens, disposed between the aperture mirror and the eye, with an entrance pupil which lies between the iris of the eye and the cornea of the eye, whereby the objective lens directs the ring illumination into the pupil of the eye and directs a reflected image-bearing light from a retina along an optical axis and through the apertured mirror; an aperture stop for the reflected image-bearing light from the retina, wherein the aperture stop is conjugate to a plane lying between the cornea and the iris of the eye; and a second rotating mask in the path of image-bearing light from the retina to provide a portion of the image bearing light to a sensor.