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. 17, 2018
Filed:
Apr. 13, 2016
Applicant:
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Inventors:
Assignee:
MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/10 (2006.01); G02B 27/00 (2006.01); G02B 27/01 (2006.01); F21V 8/00 (2006.01); G02B 3/00 (2006.01); G02B 3/04 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0081 (2013.01); G02B 3/0062 (2013.01); G02B 3/04 (2013.01); G02B 6/003 (2013.01); G02B 6/0026 (2013.01); G02B 27/0172 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/0123 (2013.01);
Abstract
A near eye or heads up display system includes a scan beam projector engine, an optical waveguide, and an exit pupil expander (EPE) optically coupled between the scan beam projector engine and the optical waveguide. The EPE improves the optical performance of the display system. The EPE could include a diffusive optical element, diffractive optical element, micro-lens array (MLA), or relay of aspherical lenses. A dual MLA EPE may have cells that prevent cross-talk between adjacent pixels. A dual MLA EPE may have a non-periodic lens array. The optical power of one MLA may be different from the other MLA.