公开(公告)号：WO1979000373A1

公开(公告)日：1979-06-28

申请号：PCT/US1978000186

申请日：1978-12-05

Applicant: RCA CORP

Inventor： RCA CORP ,  STEWART W ,  MEZRICH R

IPC: G01N29/00

CPC classification number: G01N29/06 ,  G10K11/346

Abstract: A lens assembly (100) is comprised of a physical acoustic lens (106) having a fixed relatively short focal length serially spaced from an electronic acoustic lens (114) having any selected one of a plurality of different relatively long focal lengths. Such a lens assembly is suitable for use in a pulse-echo ultrasonic-imaging system for imaging a deep structure (102).

公开(公告)号：DE2857248A1

公开(公告)日：1980-11-27

申请号：DE2857248

申请日：1978-12-05

Applicant: RCA CORP

Inventor： STEWART W ,  MEZRICH R

IPC: G01N29/00