RETINA IMAGING APPARATUS
An apparatus for obtaining an image of a retina is described herein. The apparatus includes an optical relay that defines an optical path and is configured to relay an image of the iris along the optical path to a pupil, a shutter is disposed at the pupil and configured to define at least a first shutter aperture for control of light transmission through the pupil position, a tube lens disposed to direct light from the shutter aperture to an image sensor, and a prismatic input port disposed between the shutter and the tube lens and configured to combine, onto the optical path, light from the relay with light conveyed along a second light path that is orthogonal to the optical path.
1 . A retina imaging apparatus for obtaining an image of a retina comprising:
a cylindrical housing;
a retina imaging assembly positioned within the cylindrical housing and including:
a digital camera sensor;
an optical relay that defines a first optical path and is configured to relay an image of an iris of the eye along the first optical path to a pupil;
a shutter disposed at the pupil and configured to define a first shutter aperture and a second shutter aperture for controlling light transmission through the pupil position;
a tube lens disposed to direct light from the shutter aperture to the digital camera sensor; and
a prismatic input port disposed between the shutter and the tube lens and configured to combine the first optical path with a second optical path that is orthogonal to the first optical path; and
a shutter control processor operably coupled to the shutter for controlling shutter aperture dimensions.