logo

For the Inventor, By the Inventor

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.:

US 9712794 B1

PDFFull Text
Date of Patent:
Jul. 18, 2017

Filed:

Jun. 13, 2013

Projector including image forming units and first and second optical systems

Applicant:

Nec Display Solutions, Ltd., Tokyo, JP;

Inventor:

Eisaku Shouji, Tokyo, JP;

Assignee:

NEC Display Solutions, Ltd., Tokyo, JP;

Attorney:

McGinn IP Law Group, PLLC

Primary Examiner:

Sultan Chowdhury

Int. Cl.
CPC ...
H04N 9/31 (2006.01); G03B 21/20 (2006.01); G02B 27/10 (2006.01); G02B 27/14 (2006.01); H04N 5/74 (2006.01); G02B 27/12 (2006.01); G02B 26/08 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3158 (2013.01); G02B 27/1033 (2013.01); G02B 27/126 (2013.01); G02B 27/141 (2013.01); G03B 21/204 (2013.01); G03B 21/208 (2013.01); G03B 21/2013 (2013.01); H04N 5/7458 (2013.01); H04N 9/3105 (2013.01); H04N 9/317 (2013.01); H04N 9/3164 (2013.01); G02B 26/0833 (2013.01);
Abstract

A projector has a light source, image forming units, a projection lens, a first optical system and a second optical system. The image forming units form image light by adjusting, on a per-pixel basis, the intensity of light emitted by the light source. The projection lens projects the image light formed by the image forming units to the outside. The first optical system guides light of a first wavelength emitted by the light source to the projection lens, and the second optical system guides light of a second wavelength emitted by the light source to the projection lens. The f-number of the first optical system is higher than the f-number of the second optical system.

Find Patent Forward Citations

Shouji, Eisaku. (2017). Projector including image forming units and first and second optical systems (U.S. Patent No. 9712794). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9712794

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…