公开(公告)号：EP0150843A3

公开(公告)日：1985-12-18

申请号：EP85100880

申请日：1985-01-29

申请人： COMPAGNIE GENERALE D'ELECTRICITE Société anonyme dite:

发明人： Nongaillard, Bertrand ,  Camus, Liévin ,  Boudy, Pierre ,  Rouvaen, Jean-Michel ,  Saisse, Henri ,  Fevrier, Hervé

IPC分类号： G10K11/30 ,  G01H03/12

CPC分类号： G10K11/30 ,  G01H3/125

摘要： Il comporte une sonde électroacoustique (3) comprenant un monocristal (8) sur lequel est fixé un transducteur (4 à 7) ali menté par un générateur électrique (1) de fréquence 100 MHz, cette sonde présentant n surfaces courbes coaxiales (10, 11) formant n lentilles acoustiques, le transducteur délivrant des impulsions d'énergie acoustique focalisées par les lentilles de la sonde dans l'objet à étudier (13), ces impulsions étant réflé chies par l'objet pour former sur le transducteur des signaux électriques de retour. Il comporte en outre des moyens de dé placement (15) de l'objet par rapport à la sonde et un circuit de traitement (16) apte à former des images de la structure de l'ob jet (13) à partir des signaux électriques de retour.
Application au contrôle non destructif d'échantillons de céramique.

公开(公告)号：EP0084174A3

公开(公告)日：1983-08-10

申请号：EP82112077

申请日：1982-12-28

申请人： Hitachi, Ltd.

发明人： Kanda, Hiroshi ,  Ishikawa, Isao

IPC分类号： G01H03/12 ,  G10K11/34

CPC分类号： G01H3/125 ,  B06B1/0625

摘要： An ultrasonic microscope displays an ultrasonic wave image of a sample (60) relatively and two-dimensionally scanned with respect to an ultrasonic wave beam transmitted from and focused by a transducer including a piezoelectric element (220) and an acoustic lens (200). The F number of the acoustic lens is variably changeable while the scan in one direction of the two-dimensional scan is substituted by a time axis scan of the received echo.

公开(公告)号：EP0128635A3

公开(公告)日：1986-01-15

申请号：EP84301591

申请日：1984-03-09

申请人： FUJITSU LIMITED

发明人： Sato, Takuso c/o FUJITSU LIMITED ,  Ichida, Nobuyuki c/o FUJITSU LIMITED ,  Miwa, Hirohide c/o FUJITSU LIMITED

IPC分类号： G01H05/00 ,  G01H03/12 ,  G01K11/22

CPC分类号： G01K11/22 ,  G01H3/12 ,  G01N2291/02491 ,  G01N2291/02881 ,  G01N2291/0421

摘要： Measurement of a non-linear parameter of an acoustic medium, or its distribution, for example for determining the internal temperature of a sample, is carried out noninvasively. A continuous wave ultrasonic probing beam is radiated through the sample, and a pumping wave which is an ultrasonic pulse wave is superposed on the probing beam. Phase changes of the probing beam caused by the pumping wave are detected. From these phase changes the non-linear parameter (B/A) or (B/A) e is obtained. In ohne case the pumping wave intersects the probing beam. In another case the pumping wave is directed along the probing beam, in the opposite direction.

公开(公告)号：EP0117921A3

公开(公告)日：1984-10-24

申请号：EP83113079

申请日：1983-12-23

申请人： Siemens Aktiengesellschaft

发明人： Sachs, Bertram

IPC分类号： G01H03/12

CPC分类号： H01L25/112 ,  B06B1/0629 ,  H01L21/485 ,  H01L2924/0002 ,  Y10T29/49156 ,  H01L2924/00

公开(公告)号：EP0136857A3

公开(公告)日：1986-04-23

申请号：EP84306257

申请日：1984-09-13

申请人： FUJITSU LIMITED

发明人： Sato, Takuso ,  Ichida, Nobuyuki

IPC分类号： G01H03/12 ,  G01S15/02

CPC分类号： G01S7/52038 ,  G01H3/125 ,  G01N2291/02491

摘要： An apparatus for observing a sound field of an ultrasonic wave, including a first unit which determines characteristic values (B/A).) of a medium at each point of a predetermined region by an ultrasonic wave having a sound field of an arbitrary form and a second unit (18) which displays an output of the first unit as two-dimensional or three-dimensional distribution (20) in the predetermined region, enabling control of the form of the sound field (16) of the ultrasonic wave.

公开(公告)号：EP0160821A3

公开(公告)日：1986-03-26

申请号：EP85103519

申请日：1985-03-25

申请人： Siemens Aktiengesellschaft

发明人： Granz, Bernd, Dr. ,  Oppelt, Ralph, Dipl.-Ing. (FH) ,  Sachs, Bertram

IPC分类号： G01H03/12 ,  H01L25/04

CPC分类号： B06B1/0629 ,  H01L25/042 ,  H01L2924/0002 ,  H01L2924/00

公开(公告)号：EP0121890A3

公开(公告)日：1986-01-08

申请号：EP84103640

申请日：1984-04-03

申请人： Chubachi, Noriyoshi ,  Kushibiki, Junichi

发明人： Chubachi, Noriyoshi

IPC分类号： G01S15/89 ,  G01N29/04 ,  G01H03/12

CPC分类号： G01S15/8906 ,  G01H3/125 ,  G01N29/0609 ,  G01N29/0681 ,  G01N2291/02827 ,  G01N2291/02881

摘要： An ultrasonic transmitter-receiver (16) for radiating a focused ultrasonic beam (39) and a sample (23) are moved relative to each other in the axial direction of the ultrasonic beam. A reflected wave from the sample (23) is received and a curve V(Z) of variations in the level of the reflected wave with respect to the relative movement is obtained. A reference level of interference of a directly reflected wave and a leaky elastic wave is substracted from V(Z) to perform waveform processing. The waveform processing output is subjected to a waveform analysis, and from the analysis results, the velocity and/or the attenuation of the leaky elastic wave are calculated.

公开(公告)号：EP0173955A3

公开(公告)日：1987-12-23

申请号：EP85110806

申请日：1985-08-28

申请人： International Business Machines Corporation

发明人： Imaino, Wayne Isami ,  Tam, Andrew Ching

IPC分类号： G01H03/12 ,  G01H13/00 ,  G01N29/04

CPC分类号： G01H3/12

摘要： 57 A method and device for detecting a narrow acoustic spectral feature in a sample as described. The method uses an electrical frequency modulated (FM) signal that is obtained from a voltage controlled oscillator 58. The Fourier spectrum of this wave is a main frequency f c with two small sidebands at frequencies f c ±f s . This whole triplet is slowly swept in frequency by a slow sawtooth generator 52. The electrical signal is fed into a flat acoustic transducer 64; the acoustic wave is then transmitted through an acoustically active medium 66, i.e. the sample, and detected by another flat acoustic transducer 70 which produces an FM signal with a superposed amplitude modulated (AM) signal if one of the sideboards overlaps an acoustic feature. This electrical signal is then demodulated to give a pure AM signal which can be phase sensitive detected by using a lock-in amplifier 78. By suitable adjustment of the phase setting of the lock-in amplifier both the "in-phase" and "out-of-phase" signals of the detected acoustic signal can be detected.

公开(公告)号：EP0147955A3

公开(公告)日：1986-01-22

申请号：EP84308324

申请日：1984-11-30

申请人： FUJITSU LIMITED

发明人： Shimura, Takaki c/o FUJITSU LIMITED ,  Murakami, Keiichi c/o FUJITSU LIMITED ,  Miwa, Hirohide c/o FUJITSU LIMITED ,  Sato, Takuso c/o FUJITSU LIMITED ,  Ichida, Nobuyuki c/o FUJITSU LIMITED

IPC分类号： G01H03/12 ,  G01S07/52 ,  G01S15/02 ,  A61B08/00

CPC分类号： G01H3/125 ,  G01H5/00 ,  G01S7/52022 ,  G01S7/52038 ,  G01S15/8952

摘要： A system for measuring non-linear parameter B/A of an ultrasonic medium (8) such as a living tissue (namely a value which indicates a rate of change of sound velocity with change of pressure) utilizing reflected ultrasonic waves. The system is operable to provide a measuring burst pulse (W m ) having a comparatively high frequency, and a pumping pulse (Wp) having a comparatively low frequency and a high sound pressure for obtaining a change of pressure in the medium, and to transmit those pulses in the same direction into the medium so they are superposed. The system is operable to detect phase of reflected waves from each region of the ultrasonic medium (8) and to effect differentiation. Thereby distribution of B/A along the transmission direction of the pulses in the medium can be obtained.

公开(公告)号：EP0121690A3

公开(公告)日：1985-07-31

申请号：EP84101533

申请日：1984-02-15

申请人： HITACHI, LTD.

发明人： Kanda, Hiroshi ,  Katakura, Kageyoshi ,  Ishikawa, Isao

IPC分类号： G01N29/04 ,  G01H03/12

CPC分类号： G01H3/125 ,  G01N29/06

摘要： An acoustic microscope comprising an acoustic transducer (140) which performs both generation and detection of acoustic wave beams, and a sample holding member (82) which opposes to an acoustic wave transmitting and receiving surface of the transducer (140), to hold an object sample (62) through an acoustic wave propagating medium (8) and to offer behind the sample a layer of an acoustic impedance unequal to that of the sample, so that the sample holding member (82) is moved in parallel, thereby to detect acoustic waves reflected from front and rear surfaces of the sample (62) and acoustic waves reflected from a surface of the sample holding member (82) without reaching the sample and to measure amplitudes and returning periods of time of the reflected acoustic waves, so as to measure the velocity of sound through the sample of unknown thickness, the acoustic impedance of the sample, etc. from the measured values.