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:
Dec. 09, 2003
Filed:
Jun. 11, 2002
Tomohiko Masuda, Otsu, JP;
Ken Matsubara, Takatsuki, JP;
Isao Doi, Toyonaka, JP;
Yasuyuki Hiromoto, Kyoto, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
A light shutter device including a group of light shutter elements and formed on a light shutter chip made of PLZT has a construction in which an electrode gap is set wider in a element in which an electric field acts more strongly to equalize half wavelength voltages of elements almost to the same level since electric fields acting on the elements are different in strength from each other even under a prescribed voltage applied between a common electrode and each of individual electrodes . An electrode gap of an element having a weaker electric field is comparatively set narrower, whereas an electrode gap of an element having a stronger electric field is set comparatively wider. Moreover, a shape of electrodes of each element are altered so as to make half wavelength voltages of elements almost equal.