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. 03, 2015
Filed:
Jun. 12, 2014
Applicant:
Google Inc., Mountain View, CA (US);
Inventors:
Adam E. Norton, Palo Alto, CA (US);
Mary Lou Jepsen, Sausalito, CA (US);
Andrei S. Kazmierski, Pleasanton, CA (US);
Belle Fu, Taipei, TW;
Assignee:
Google Inc., Mountain View, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/62 (2014.01); G03B 21/625 (2014.01); G02B 5/02 (2006.01); G02B 3/00 (2006.01);
U.S. Cl.
CPC ...
G03B 21/625 (2013.01); G02B 3/0056 (2013.01); G02B 5/021 (2013.01); G02B 5/0242 (2013.01); G02B 5/0278 (2013.01);
Abstract
A projection screen includes a transparent substrate having a first side and a second side, an array of lenses disposed along the first side of the transparent substrate, a dark film disposed across the second side of the transparent substrate, an array of holes disposed through the dark film, and an array of diffusing spots each aligned with a corresponding one of the array of holes.