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:
Apr. 01, 2014
Filed:
Apr. 19, 2013
Applicant:
Laser Light Engines, Inc., Salem, NH (US);
Inventors:
Barret Lippey, Belmont, MA (US);
Ian Turner, Stratham, MA (US);
Assignee:
Laser Light Engines, Inc., Salem, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/60 (2006.01);
U.S. Cl.
CPC ...
Abstract
A projection screen that reduces speckle by separating reflective flakes by at least 100 micrometers. The reflective flakes are held in a binder material that is coated on a backing layer. In a laser projection system, the separation distance between reflective flakes may be at least twice the coherence length of the laser light.