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. 07, 2019
Filed:
Apr. 04, 2017
Applicant:
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Inventors:
Tuomas Heikki Sakari Vallius, Redmond, WA (US);
Pasi Petteri Pietilä, Espoo, FI;
Assignee:
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01); G02B 27/01 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 5/1842 (2013.01); G02B 6/0033 (2013.01); G02B 2027/0125 (2013.01);
Abstract
A multi-chromatic optical waveguide for a near-eye display (NED) device includes reflective/refractive structures and periodic grating structures. Image incoupling and outcoupling can be done by reflective mirrors/facets, and image expansion can done by one or more even order expansion gratings. Wider field of view can be by achieved by splitting the field-of-view into multiple portions that propagate in different directions within the waveguide and then recombining those portions in the outcoupling region of the waveguide.