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:
Feb. 26, 2013
Filed:
Jan. 09, 2012
David Nicholas Crosby, Oxford, GB;
David Hayes, Rye, GB;
Philip Andrew Greenhalgh, Robertsbridge, GB;
David Nicholas Crosby, Oxford, GB;
David Hayes, Rye, GB;
Philip Andrew Greenhalgh, Robertsbridge, GB;
Cerr Limited, Wallingford, GB;
Abstract
An optical module for head mounted displays and other applications comprises: an optical substrate and optical superstrate having inter-engaging ridged surfaces. A reflective layer is formed on at least one of the surfaces. An index matching material may be located between the surfaces. A region that receives a projected image, from a projector, directs rays launched from the projector onto the ridged surfaces, so that in use a viewer perceives an augmented image. The augmented image comprising reflected rays from the projector and transmitted rays from an object located on an opposite side of the module to that of the viewer.