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.

Date of Patent:
Dec. 13, 2016

Filed:

Mar. 21, 2012
Applicants:

Xiaoyu Miao, Sunnyvale, CA (US);

Ehsan Saeedi, Santa Clara, CA (US);

Inventors:

Xiaoyu Miao, Sunnyvale, CA (US);

Ehsan Saeedi, Santa Clara, CA (US);

Assignee:

Google Inc., Mountain View, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 27/28 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3083 (2013.01); G02B 27/0172 (2013.01); G02B 27/283 (2013.01); G02B 27/286 (2013.01);
Abstract

An apparatus includes an illumination module, an end reflector, and a beam splitter. The illumination module launches display light along a forward propagating path within an eyepiece. The end reflector is disposed at an opposite end of the eyepiece from the illumination module and reflects back the display light traveling along a reverse propagating path. The beam splitter is disposed in the forward propagating path between the end reflector and the illumination module. The beam splitter directs a first portion of the display light traveling along the forward propagating path out a first side of the eyepiece. The beam splitter directs a second portion of the display light traveling along the reverse propagation path out a second side of the eyepiece.


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