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US 12,740,701 B2Granted
Devices, systems, and methods to measure corneal topography
AssigneeVision Labs, Inc.
InventorsZachary Bodnar, Jochen Kumm, Nikolai Steklov, Anatoli Trafimuk
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Abstract
Provided are devices, systems, and methods configured to uniformly illuminate a biological sample with a patterned illumination source and determine a contour of the biological sample.
Claims20
An apparatus for corneal topography measurement, comprising:
- a panel configured to releasably couple to a mobile device, wherein the panel is further configured to (a) project a light pattern onto a cornea of an eye to generate a reflected light pattern and (b) aid transmission of the reflected light pattern from the cornea to an imaging device on the mobile device for generating a plurality of light signals,
- wherein an optical axis of the imaging device is offset from (i) a patterned region or (ii) an illumination source on the panel,
- wherein the panel comprises a plurality of curved scattering elements on a surface of the panel, and
- wherein the plurality of curved scattering elements reflects a light source to generate the projected light pattern.
1 more element
A method of measuring corneal topography, comprising:
- (a) providing a panel having a plurality of lines and a plurality of curved scattering elements on a surface of the panel;
- (b) coupling the panel to a mobile device in a configuration such that an optical axis of an imaging device on the mobile device is offset from a patterned region on the panel or an illumination source on the panel;
- (c) placing the panel coupled to the mobile device in proximity to an eye of a subject;
- (d) using the panel and the illumination source to project a light pattern onto the cornea to generate a reflected light pattern, wherein the plurality of curved scattering elements reflects the illumination source to generate the reflected light pattern;
- (e) using the imaging device on the mobile device to receive the reflected light pattern to generate a plurality of light signals;
- and
- (f) generating a topography map of the cornea based at least in part on the plurality of light signals.
4 more elements
Dependencies are inferred from the claim text.