The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2025
Filed:
Aug. 26, 2022
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Alexander Jobe Fix, Seattle, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
Techniques are described for generating and using an illumination pattern for corneal topography. In some examples, the illumination pattern is projected over a sequence of frames, including a first frame with a first pattern of dots arranged along a two-dimensional grid, and a second frame with a second pattern of dots arranged along the two-dimensional grid. The first pattern differs from the second pattern with respect to a wavelength of light used to project one or more dots, a position of one or more dots, or both. After the illumination pattern has been determined, it can be projected over the sequence of frames and onto an eye of a user. Reflections of the illumination pattern as projected over the sequence of frames can then be used to calculate an eye model characterizing a topography of a cornea of the eye of the user.