Title:
炭素質音響整合層及びその製造方法
Document Type and Number:
Japanese Patent JP6509050
Kind Code:
B2
Abstract:
Provided are: a carbonaceous acoustic matching layer which exhibits satisfactory mechanical strength, in which losses at a layer interface are suppressed as far as possible and in which the degree of variation in acoustic impedance in the thickness direction can be increased; and a method for producing same. The carbonaceous acoustic matching layer is obtained by dispersing filler particles, which are selected on the basis of the desired acoustic impedance of each layer, in a resin such as a furan resin, a phenol resin or a vinyl chloride resin, curing, laminating, and then carbonizing the resin by heating in a non-oxidizing atmosphere, amorphous carbon, which is obtained by the resin carbonization, is integrated across all the layers. The blending proportion of the filler particles is decided so that the difference in coefficient of linear contraction caused by the carbonization is at a minimum between adjacent layers.
More Like This:
| JP3078865 | [Title of Invention] Ultrasonic detection device |
| JP2009506621 | Contact structure of film type audio speaker |
| JP2017127430 | ULTRASONIC PROBE, AND ULTRASONIC DEVICE |
Inventors:
Toshiki Ohno
Atsushi Satake
Ken Suzuki
Atsushi Satake
Ken Suzuki
Application Number:
JP2015121444A
Publication Date:
May 08, 2019
Filing Date:
June 16, 2015
Export Citation:
Assignee:
MITSUBISHI PENCIL CO.,LTD.
International Classes:
H04R17/00; H04R31/00
Domestic Patent References:
| JP2013236262A | ||||
| JP2015082764A | ||||
| JP2004045389A |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Satoshi Deno
Atsushi Ebiya
Nobuo Sekine
Takashi Ishida
Tetsuji Koga
Satoshi Deno
Atsushi Ebiya
Nobuo Sekine