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US Patent 10521658 Embedded eye tracker with dichroic mirror

Patent 10521658 was granted and assigned to Facebook on December, 2019 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent
1

Patent attributes

Patent Applicant
Facebook
Facebook
1
Current Assignee
Facebook
Facebook
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
105216581
Patent Inventor Names
Nicholas Daniel Trail1
Date of Patent
December 31, 2019
1
Patent Application Number
156442031
Date Filed
July 7, 2017
1
Patent Citations
‌
US Patent 10180572 AR glasses with event and user action control of external applications
‌
US Patent 10056020 Waveguide display with two-dimensional scanner
‌
US Patent 10204451 Multi-optical surface optical design
Patent Primary Examiner
‌
James R Sheleheda
1
Patent abstract

An eyewear device has an optical element, a source, a dichroic mirror, and a camera. The optical element has a front surface, a back surface, a rim, and an angled portion of the rim. The source emits light in a first band of light and is configured to illuminate a portion of an eye of a user of the eyewear device. The dichroic mirror is arranged proximate to the angled portion of the rim, is reflective in the first band of light, is transmissive in a second band of light, and is configured to direct light in the first band reflected from the portion of the eye toward a first position. The camera is located in the first position that is located in a plane of the optical element, and the camera is configured to capture images of the light in the first band reflected by the dichroic mirror.

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