发明授权
- 专利标题： Random phase diffuser for reflective imaging
- 专利标题（中）： 用于反射成像的随机相扩散器
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申请号： US823186申请日： 1977-08-09
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公开(公告)号： US4153894A公开(公告)日： 1979-05-08
- 发明人: Gerard A. Alphonse , David H. R. Vilkomerson , Bernard Hurley
- 申请人： Gerard A. Alphonse , David H. R. Vilkomerson , Bernard Hurley
- 申请人地址： DC Washington
- 专利权人： The United States of America as represented by the Secretary of the Department of Health, Education and Welfare
- 当前专利权人： The United States of America as represented by the Secretary of the Department of Health, Education and Welfare
- 当前专利权人地址： DC Washington
- 主分类号： G01S7/52
- IPC分类号： G01S7/52 ; G10K11/00 ; G10K11/18 ; G01S9/66
摘要：
Disclosed is a random phase diffuser which is inserted between a transducer and an insonification subject in accoustical imaging. The diffuser is comprised of an array of lossless elements which cause sound emitted by the transducer to be passed through and emitted with a phase value of 0.degree. or 180.degree.. Additionally disclosed is the combination of a random phase diffuser with a wedge coupling feature for increasing insonification efficiency.
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