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. 09, 2019
Filed:
Jun. 30, 2015
Applicant:
Google Inc., Mountain View, CA (US);
Inventor:
Hui Son, San Jose, CA (US);
Assignee:
GOOGLE LLC, Mountain View, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03H 1/00 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0172 (2013.01); G02B 2027/0174 (2013.01);
Abstract
An apparatus includes a holographic film having one or more reflective holograms recorded therein. One or more light sources positioned to direct light toward a corresponding one of the one or more holograms, and a dynamic mask positioned between the one or more light sources and the holographic film to spatially modulate light traveling between the one or more light sources and the one or more reflective holograms but not spatially modulate ambient light traveling through the hologram.