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:
Jan. 27, 2015
Filed:
Jan. 26, 2012
Ilya Agurok, Santa Clarita, CA (US);
Ilya Agurok, Santa Clarita, CA (US);
Light Prescriptions Innovators, LLC, Altadena, CA (US);
Abstract
A pair of eyewear has transparent waveguides in each eyewear lens. An illumination subsystem directs a beam of light through the waveguides onto a wearer's eyes. A First Purkinje point imaging subsystem for each lens uses light reflected from the eyes through the waveguides. A controller calculates from the positions of the First Purkinje points the wearer's gaze parallax angle and/or the distance to an object of interest on which the gaze of the wearer's eyes converges. The output of the controller may drive variable-focus eyeglass lenses to enable a presbyopic wearer to focus on the object. Modified Alvarez variable-focus lenses are described.