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 7959299 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 14, 2011

Filed:

Mar. 18, 2008
Applicant:

Yasunaga Miyazawa, Okaya, JP;

Inventor:

Yasunaga Miyazawa, Okaya, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 21/00 (2006.01); G03B 21/14 (2006.01); G03B 21/26 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
Abstract

A projector including a lighting device for emitting light including first, second and third colored light beams. A first dichroic mirror separates the light into the first colored light beam by reflecting the light in a certain wavelength range and transmitting the light in another wavelength range and transmitting the light in another wavelength range. A second dichroic mirror separates the other colored light beams into the second and third colored light beams by reflecting the light in a certain wavelength range and transmitting the light in another wavelength range. The second dichroic mirror separates the light from the lighting device into the colored light beams. The projector including a first color combining optical system for combining the colored light beams to emit a first image light beam.


Find Patent Forward Citations

Miyazawa, Yasunaga. (2011). Projector having reduced color shading (U.S. Patent No. 7959299). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7959299

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