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:
Nov. 07, 2017
Filed:
Dec. 19, 2016
Applicant:
Google Inc., Mountain View, CA (US);
Inventors:
Serge Bierhuizen, Mountain View, CA (US);
Xinda Hu, Mountain View, CA (US);
Jerome Carollo, Mountain View, CA (US);
Assignee:
Google Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/60 (2014.01); G02B 27/00 (2006.01); G02B 5/04 (2006.01); H04N 13/04 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0025 (2013.01); G02B 5/04 (2013.01); H04N 13/044 (2013.01);
Abstract
A head mounted display device includes a display panel and a lens assembly mounted so that an optical axis of the lens assembly intersects the display panel. The lens assembly includes a lens body having a surface facing the display panel and defining Fresnel prisms. A Fresnel prism of the Fresnel prisms has a first facet angle when viewed in a first cross-section and has a second facet angle when viewed in a second cross-section parallel to the first cross-section. The first facet angle is different than the second facet angle.