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:
Feb. 12, 1991
Filed:
May. 02, 1989
Kazuhiro Watanabe, Tokyo, JP;
Atsuo Iida, Yokohama, JP;
Fumihiro Namiki, Machida, JP;
Kenji Kawabe, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An ultrasound probe for a medical imaging system, comprising an ultrasound absorber and a piezoelectric vibrator mounted on the ultrasound absorber, cut in the direction from the surface of the piezoelectric vibrator to the ultrasound absorber into an array by a plurality of cutting grooves. The cutting depth d of each cutting groove in the ultrasound absorber is determined as an integer multiple of a quarter of a wave length .lambda. corresponding to a center frequency f.sub.0 of ultrasound waves radiated from the piezoelectric vibrator. Consequently, symmetrical electro-acoustic conversion characteristics of the ultrasound probe can be obtained in the frequency domain.