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1. (WO2019004037) ACOUSTIC MATCHING LAYER
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Pub. No.: WO/2019/004037 International Application No.: PCT/JP2018/023563
Publication Date: 03.01.2019 International Filing Date: 21.06.2018
IPC:
H04R 17/00 (2006.01) ,H04R 1/00 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
17
Piezo-electric transducers; Electrostrictive transducers
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1
Details of transducers
Applicants:
パナソニックIPマネジメント株式会社 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. [JP/JP]; 大阪府大阪市中央区城見2丁目1番61号 1-61, Shiromi 2-chome, Chuo-ku, Osaka-shi, Osaka 5406207, JP
Inventors:
橋田 昌道 HASHIDA Masamichi; --
桝田 知樹 MASUDA Tomoki; --
菅谷 英生 SUGAYA Hidetaka; --
Agent:
鎌田 健司 KAMATA Kenji; JP
前田 浩夫 MAEDA Hiroo; JP
Priority Data:
2017-12835730.06.2017JP
Title (EN) ACOUSTIC MATCHING LAYER
(FR) COUCHE D'ADAPTATION ACOUSTIQUE
(JA) 音響整合層
Abstract:
(EN) A tabular member comprising a metal, ceramic, or other such material is used as a substrate, there being provided a dense portion (2) provided in the direction of sound wave propagation and a recess (3) partially provided on the vibration surface (6) of the tabular substrate toward a bonding surface (5) that is in the direction of sound wave propagation. This configuration reduces acoustic impedance and allows sound waves to be efficiently conveyed to a gas. Furthermore, because the dense portion (2) where sound waves propagate is of high density, the acoustic transmission loss is low and it is possible to obtain exceptional characteristics as an acoustic matching layer.
(FR) Un élément tabulaire comprenant un métal, une céramique ou un autre matériau de ce type est utilisé en tant que substrat, une partie dense (2) étant disposée dans la direction de propagation d'ondes sonores et un renfoncement (3) étant partiellement disposé sur la surface de vibration (6) du substrat tabulaire vers une surface de liaison (5) qui est dans la direction de propagation d'onde sonore. Cette configuration réduit l'impédance acoustique et permet de transporter efficacement des ondes sonores vers un gaz. En outre, étant donné que la partie dense (2) où se propagent des ondes sonores est de haute densité, la perte de transmission acoustique est faible et il est possible d'obtenir des caractéristiques exceptionnelles en tant que couche d'adaptation acoustique.
(JA) 基材として、金属やセラミックス等からなる板状部材を用い、音波の伝播方向に設けた密な部分(2)と、板状の基材の振動面(6)に、音波の伝播方向である接合面(5)に向けて部分的に設けられた凹部(3)を設ける。この構成により、音響インピーダンスを低減し、気体への音波の伝達が効率的に行われる。更に、音波が伝播する密な部分(2)は高密度であるため音響透過損失が小さく、音響整合層として優れた特性を得ることができる。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)