发明名称 |
Ultrasonic transducer and method of manufacturing the same |
摘要 |
Materials having different compositions are arranged to prepare a molded form in which the sound velocity characteristic is varied from high frequency to low frequency from the center toward the periphery. An ultrasonic wave-radiating face of the molded form and the back face of the ultrasonic wave-radiating face are arranged in parallel to each other to prepare a transducer in which the center region can transmit/receive high-frequency ultrasonic waves and the periphery region can transmit/receive low-frequency ultrasonic waves.
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申请公布号 |
US2004012307(A1) |
申请公布日期 |
2004.01.22 |
申请号 |
US20030437635 |
申请日期 |
2003.05.14 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
FUKUDA HIROSHI;OMURA MASAYOSHI;MIZUGUCHI TOHRU |
分类号 |
G01N29/24;A61B8/00;B06B1/06;H01L41/24;H04R17/00;H04R31/00;(IPC1-7):H01L41/08 |
主分类号 |
G01N29/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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