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:
Jun. 25, 2013
Filed:
Jan. 10, 2011
Thomas Herzog, Dresden, DE;
Henning Heuer, Dresden, DE;
Thomas Herzog, Dresden, DE;
Henning Heuer, Dresden, DE;
Abstract
An ultrasonic sensor for detecting and/or scanning an object includes a substrate and a piezoelectric sensor unit arranged on or at this substrate and/or connected to this substrate. The rear side of the substrate facing away from the piezoelectric sensor unit has a surface structure including a plurality of elevated portions and recesses, with this surface structure being configured so that a diffuse scattering of ultrasonic waves incident on the rear side from the direction of the sensor unit takes place by it; and/or in that its elevated portions and/or recesses have a mean lateral extent in the range of 0.05 μm to 1 mm, preferably from 0.1 μm to 200 μm, preferably from 0.2 μm to 20 μm, and/or a mean lateral extent which is smaller than or equal to the wavelength of an ultrasonic wave which can be produced by the piezoelectric sensor unit.