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. 10, 2002
Filed:
Nov. 30, 2000
Toshimi Nishiyama, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The invention is intended to present a multi-channel optical modulator small in crosstalk, being used in a laser external modulator of an optical recording apparatus. To achieve the object, the multi-channel optical modulator comprises a plurality of first electrodes ( ) provided on one side of an acoustic-optical medium ( ), a plurality of piezoelectric elements ( ) provided on the first electrodes ( ), a plurality of second electrodes ( ) provided on the piezoelectric elements ( ), a plurality of first lead wires ( ) connected individually to the second electrodes ( ), and a plurality of second lead wires ( ) connected individually to the first electrodes ( ), and thereby the crosstalk is small.