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. 17, 2007
Filed:
Feb. 03, 2005
Applicants:
Paul Weissman, Brewster, NY (US);
Mark A. Handschy, Boulder, CO (US);
Inventors:
Paul Weissman, Brewster, NY (US);
Mark A. Handschy, Boulder, CO (US);
Assignee:
Displaytech, Inc., Longmont, CO (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/14 (2006.01); G09G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electronic viewfinder with a reflective microdisplay and associated optical elements in a design that utilizes one or more folded optical paths to achieve a compact size and volume that may have a dimension of less than 10 millimeters per side. Moreover, the optical design may have an effective focal length that is greater than the spacing of the optical elements from the microdisplay. Various embodiments include a pancake window arrangement with reflective surfaces that are spaced apart from each other and cube beamsplitter eyepieces with folded paths.