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:
Jul. 06, 2021
Filed:
Sep. 27, 2017
Applicant:
Nokia Technologies Oy, Espoo, FI;
Inventor:
Toni Jarvenpaa, Akaa, FI;
Assignee:
Nokia Technologies Oy, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); G02B 5/18 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 5/1828 (2013.01); G02B 6/0011 (2013.01); G02B 2027/0138 (2013.01); G02B 2027/0178 (2013.01);
Abstract
According to various but not necessarily all embodiments of the invention, there is provided an apparatus including an optical engine configured to provide one or more light beams, a camera, a waveguide configured to guide the one or more light beams wherein the waveguide includes a diffractive in-coupling grating and at least one diffractive out-coupling, wherein the at least one out-coupling grating is configured to out-couple the one or more light beams towards an eye of a user and towards the camera.