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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 6755554 B1

PDFFull Text
Expired
Date of Patent:
Jun. 29, 2004

Filed:

May. 25, 2001

Color wheel assembly and color sequential display device using the same, color wheel unit and color sequential display device using the same, and color sequential display device

Applicant:
Inventors:

Hideki Ohmae, Hyogo, JP;

Mitsuhiro Wada, Osaka, JP;

Kazunori Tanabe, Okayama, JP;

Shigeru Aruga, Osaka, JP;

Hirokazu Sakaguchi, Osaka, JP;

Hisatoshi Shimose, Osaka, JP;

Assignee:

Matsushita Electric Industrial Co., Ltd., Osaka, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Alan Cariaso

Assistant Examiner:

Ismael Negron

Int. Cl.
CPC ...
F21V 9/10 ;
U.S. Cl.
CPC ...
F21V 9/10 ;
Abstract

A field sequential color display device includes a color wheel assembly. The color wheel assembly has a color wheel which is divided into a plurality of color regions and a motor for rotating the color wheel. The motor contains a sensor for detecting rotation of the motor and the sensor outputs at least one pulse per one revolution of the motor. The color wheel assembly also has a spatial light modulator for displaying image data that is driving in synchronization with the pulse output by the sensor.

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Ohmae, Hideki. (2004). Color wheel assembly and color sequential display device using the same, color wheel unit and color sequential display device using the same, and color sequential display device (U.S. Patent No. 6755554). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6755554

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