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:
Sep. 27, 1988
Filed:
Aug. 25, 1987
Naoji Hayakawa, Yokohama, JP;
Fumitaka Kan, Tokyo, JP;
Toshiaki Majima, Tokyo, JP;
Masanori Takenouchi, Atsugi, JP;
Ichiro Nomura, Tokyo, JP;
Mitsuru Yamamoto, Atsugi, JP;
Hidetoshi Suzuki, Atsugi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An optical modulation device includes: a ferroelectric liquid crystal disposed between a pair of substrates; provision for applying an alternating voltage sufficient to render the ferroelectric liquid crystal turbid; and provision for superposing a DC voltage on the alternating voltage. A portion of the ferroelectric liquid crystal rendered turbid through the application of an alternating voltage is selectively caused to have an increased transmittance when superposed with a DC voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile