Portable wavefront aberrometer with open field alignment channel
AssigneeSmart Vision Labs
InventorYaopeng Zhou
Life of this patent
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Abstract
A portable wavefront aberrometer is disclosed. In one embodiment, the portable wavefront aberrometer comprises a light source, a housing having first and second apertures formed therethrough, and a plurality of optical components disposed within the housing. The plurality of optical components are arranged to direct light generated by the light source to the first aperture via a first optical channel; direct light received into the housing through the second aperture to the first aperture via a second optical channel; and direct light received into the housing through the first aperture to a light detector via a third optical channel.
Claims20
A portable wavefront aberrometer comprising:
- a light source;
- a housing having a first aperture and a second aperture formed therethrough;
- and
- a plurality of optical components disposed within the housing, the plurality of optical components comprising a first lens, a second lens, and an alignment target, the plurality of optical components being arranged to:
- direct light generated by the light source to the first aperture via a first optical channel without passing through any alignment target in the first optical channel;
- direct ambient light received into the housing through the second aperture and through a straight path through the first lens, the alignment target, and the second lens to define a second optical channel to the first aperture, wherein the alignment target is disposed between the first lens and the second lens at a focal point defined by the first lens and the second lens;
- and
- direct reflected light received into the housing through the first aperture to a light detector via a third optical channel.
A portable wavefront aberrometer module comprising:
- a housing having a first aperture, a second aperture, and a third aperture formed therethrough;
- and
- a plurality of optical components disposed within the housing, the plurality of optical components comprising a first lens, a second lens, and an alignment target, the plurality of optical components being arranged to:
- direct light generated by a light source to the first aperture via a first optical channel without passing through any alignment target in the first optical channel;
- direct ambient light received into the housing through the second aperture and through a straight path through the first lens, the alignment target, and the second lens to define a second optical channel to the first aperture, wherein the alignment target is disposed between the first lens and the second lens at a focal point defined by the first lens and the second lens;
- and
- direct reflected light received into the housing through the first aperture to the third aperture via a third optical channel.
A method comprising:
- causing a light source housed within a housing to generate internally-produced light, wherein a plurality of optical components disposed in the housing are to direct the internally-produced light via a first optical channel without passing through any alignment target in the first optical channel;
- receiving externally-produced light into the housing via an aperture of the housing and through a straight path through a first lens, an alignment target, and a second lens to define a second optical channel, wherein the alignment target is disposed between the first lens and the second lens at a focal point defined by the first lens and the second lens;
- simultaneously directing the internally-produced light and the externally-produced light through the housing and to an eye of a patient;
- and
- capturing, with a light detector, reflected light from the eye of the patient.
Dependencies are inferred from the claim text.