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US 8,616,702 B2Granted
Hybrid laser ophthalmoscope
AssigneeUniversity of Iowa Research Foundation
InventorMichael Abrámoff
Life of this patent
Estimating the term…
Abstract
Provided is a hybrid laser ophthalmoscope comprising a laser light source, a LED light source, and a holographic diffuser, wherein the holographic diffuser is configured to shape a beam of light into a Maxwellian ring.
Claims26
An apparatus for examining an eye, comprising:
- a first light source, wherein the first light source is a laser light source;
- a second light source, wherein the second light source is a Light Emitting Diode (LED) light source;
- a light source selection switch, coupled to the first light source and the second light source, configured to select either the first light source or the second light source to illuminate an eye, wherein the first light source or the second light source becomes a selected light source upon selection;
- a holographic diffuser configured to receive light from the selected light source and to shape the light into a Maxwellian ring based on a diffraction pattern of the holographic diffuser;
- and
- an imaging lens coupled with a hole mirror, wherein the imaging lens and the hole mirror are configured to receive the Maxwellian ring and to image the Maxwellian ring onto the eye.
3 more elements
A method for examining an eye, comprising:
- selecting from a first light source and a second light source, wherein the first light source is a laser light source and the second light source is a Light Emitting Diode (LED) light source, resulting in a selected light source;
- transmitting light from the selected light source to a holographic diffuser, wherein the holographic diffuser is configured to shape the light into a Maxwellian ring based on a diffraction pattern of the holographic diffuser;
- transmitting the Maxwellian ring from the holographic diffuser to an imaging lens coupled with a hole mirror, wherein the imaging lens and the hole mirror are configured to image the Maxwellian ring based on the diffraction pattern of the holographic diffuser onto the eye;
- and
- imaging the eye with the Maxwellian ring.
2 more elements
A system for examining an eye, comprising:
- an apparatus comprising,
- a first light source, wherein the first light source is a laser light source,
- a second light source, wherein the second light source is a Light Emitting Diode (LED) light source,
- a light source selection switch, coupled to the first light source and the second light source, configured to select either the first light source or the second light source to illuminate an eye, wherein the first light source or the second light source becomes a selected light source upon selection,
- a holographic diffuser configured to receive light from the selected light source and to shape the light into a Maxwellian ring based on a diffraction pattern of the holographic diffuser,
- an imaging lens coupled with a hole mirror, wherein the imaging lens and the hole mirror are configured to receive the Maxwellian ring and to image the Maxwellian ring onto the eye, and
- a sensor, configured to receive light reflected from the imaging of the Maxwellian ring and generate an image of the eye based on the reflected light;
- and
- a computing device, coupled to the apparatus, configured to analyze the image of the eye.
6 more elements
Dependencies are inferred from the claim text.