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:
Jul. 15, 2003
Filed:
Aug. 30, 2000
Kazuki Taira, Tokyo, JP;
Shigeki Uno, Yokohama, JP;
Tatsuo Saishu, Yokohama, JP;
Kohei Suzuki, Yokohama, JP;
Ryoji Tsuda, Fujisawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A color shutter, comprising first, second and third polarizers, first and second retarders, first and second polarizing rotators, and at least one absorption type partial polarizer. The color shutter is constructed such that the first retarder is arranged between the first polarizer and the second polarizer, that the second retarder is arranged between the second polarizer and the third polarizer, that the first polarizing rotator is arranged between the first polarizer and the second polarizer, that the second polarizing rotator is arranged between the second polarizer and the third polarizer, at least one of the first polarizing rotator and the second polarizing rotator is arranged in a manner to be sandwiched between the second polarizer and the first or second retarder, that the absorption type partial polarizer is arranged between the first polarizing rotator and the first retarder and/or between the second polarizing rotator and the second retarder, and that the transmitted light can be changed into the three primary colors of RGB by selecting the voltage applied to the first and second polarizing rotators.