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 7534027 B1

PDF
Full Text
Expired
Date of Patent:
May. 19, 2009

Filed:

Apr. 03, 2006
Applicant:

Koji Ichikawa, Kumamoto, JP;

Inventor:

Koji Ichikawa, Kumamoto, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 26/02 (2006.01); F21V 14/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A planar light source of the present invention includes a light source part, a light guide part for guiding light emitted from the light source part to form planar emission of the light, and a reflector for reflecting light emitted from the light source part to allow the light to enter the light guide part. The reflector has a member for controlling the amount of reflected light capable of controlling the amount of reflected light.


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Ichikawa, Koji. (2009). Planar light source and liquid crystal display using the same (U.S. Patent No. 7534027). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7534027

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