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:
Nov. 06, 1990
Filed:
Jul. 21, 1989
Applicant:
Inventors:
Masako Hacchow, Hachiooji, JP;
Takeshi Yamagishi, Sagamihara, JP;
Fumio Uchino, Hachiooji, JP;
Hiroshi Kajimura, Tokyo, JP;
Assignee:
Olympus Optical Co., Ltd., , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10K / ;
U.S. Cl.
CPC ...
181176 ;
Abstract
In an acoustic lens apparatus of this invention, a lens surface formed on an ultarsonic medium has a longitudinal wave lens portion constituted by a first aspherical surface at its central area, and a transverse wave lens portion constituted by a second aspherical surface at its peripheral area. The ultrasonic medium includes a piezoelectric transducer for generating ultrasonic waves at its surface opposite to the lens surface. The ultrasonic medium is arranged so that the lens surface opposes a sample, a coupler medium is filled in the gap between the surface and the sample.