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. 12, 2026
Filed:
Sep. 30, 2024
Lemon Inc., Grand Cayman, KY;
Chien Hung Lu, Los Angeles, CA (US);
Bowei Zhang, Los Angeles, CA (US);
Lemon Inc., Grand Cayman, KY;
Abstract
A computing system including one or more processing devices configured to calibrate an eye-tracking camera. Calibrating the eye-tracking camera includes receiving lens tolerance range data associated with intrinsic parameters and position parameters of a pancake lens, and further includes receiving image data of one or more ground-truth features. Calibrating the eye-tracking camera further includes, over a plurality of solver iterations, computing estimated values of the intrinsic parameters and position parameters. In each solver iteration, the one or more processing devices compute one or more estimated feature locations based on the image data and perturbed values of the intrinsic parameters and position parameters. The one or more processing devices evaluate a loss function based on the one or more estimated feature locations and ground-truth locations. The one or more processing devices update the perturbed values. Calibrating the eye-tracking camera further includes outputting the perturbed values computed in a final iteration.
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