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:
Dec. 27, 2016
Filed:
May. 30, 2011
Yoshie Shimizu, Tokyo, JP;
Yasushi Tanijiri, Tokyo, JP;
Yoshie Shimizu, Tokyo, JP;
Yasushi Tanijiri, Tokyo, JP;
KONICA MINOLTA ADVANCED LAYERS, INC., Tokyo, JP;
Abstract
A video display device is provided with a light source, a display element, and an eyepiece optical system (). The light source emits light which has at least one emission peak wavelength and has a wavelength width including one emission peak wavelength. The display element modulates the light emitted from the light source and displays video. The eye-piece optical system () comprises a volume phase reflective HOE () with diffracts and reflects video light from the display element and leads the light to a viewing pupil. An HOE surface () is divided into a plurality of flat surfaces () disposed so as to be recessed on the viewing pupil side, and the plurality of flat surfaces () are continuous so as to have a common ridge line at a boundary between the flat surfaces adjoining to each other.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile