US 9,808,830 B2
Ultrasound transducer and ultrasound imaging system with a variable thickness dematching layer
Alan Tai, Phoenix, AZ (US); Frederic Lanteri, Le Cannet (FR); Scott Easterbrook, Bainbridge Island, WA (US); and Jian Zhong Zhao, San Jose, CA (US)
Assigned to GENERAL ELECTRIC COMPANY, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Feb. 19, 2015, as Appl. No. 14/625,665.
Application 14/625,665 is a continuation in part of application No. 14/141,603, filed on Dec. 27, 2013, granted, now 9,452,447.
Prior Publication US 2015/0183000 A1, Jul. 2, 2015
Int. Cl. B06B 1/06 (2006.01); G01S 7/52 (2006.01)
CPC B06B 1/0622 (2013.01) [G01S 7/52017 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An ultrasound transducer comprising:
an acoustic layer including a plurality of transducer elements; and
a dematching layer coupled to the acoustic layer, the dematching layer comprising a front side adjacent to the acoustic layer and a backside opposite of the acoustic layer, the dematching layer having a greater acoustic impedance than the acoustic layer, the dematching layer having a thickness that varies in order to alter a bandwidth of the ultrasound transducer, wherein the front side of the dematching layer defines a curved surface.