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. 25, 1989
Filed:
Apr. 03, 1987
Applicant:
Inventors:
Masao Yamanobe, Machida, JP;
Yasuyuki Watanabe, Hiratsuka, JP;
Hajime Sakata, Hiratsuka, JP;
Yukitoshi Ohkubo, Yokohama, JP;
Tomoyuki Umezawa, Hiratsuka, JP;
Chiori Mochizuki, Yokohama, JP;
Kazuya Ishiwata, Yokosuka, JP;
Takayuki Ishii, Hiratsuka, JP;
Akihiko Nagano, Kawasaki, JP;
Etsuro Kishi, Yokohama, JP;
Ryoji Fujiwara, Kamakura, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
350348 ; 3503 / ; 350334 ;
Abstract
An optical modulation device for effecting optical modulation by controlling the diffraction phenomenon of light, which not only consumes a small amouhnt of the driving energy employed, such as a electric power, but which is also capable of improvements in reliability.