Compact wide angle acoustic transducer
AssigneeGWF MessSysteme AG
InventorsThomas Werner Hies, Claus-Dieter Ohl, Trung Dung Luong
Life of this patent
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Abstract
A transducer is provided for emitting and receiving acoustic waves, a method for operating and a method for producing the same. The transducer comprises a casing that forms a cavity. The casing comprises an excitation surface and an emitting surface, which is arranged opposite to the excitation surface. A transducer element is provided at the excitation surface, and an acoustic diffuser is provided at the emitting surface of the casing, wherein a diffusing structure of the acoustic diffuser faces the cavity.
Claims22
A transducer for emitting and receiving acoustic waves, the transducer comprising a casing, the casing forming a cavity, the casing comprising:
- an excitation surface and an emitting surface which is arranged opposite to the excitation surface,
- a transducer element, the transducer element being provided at the excitation surface,
- an acoustic diffuser, the acoustic diffuser being provided at the emitting surface of the casing, wherein a diffusing structure of the acoustic diffuser faces the cavity, and
- a second acoustic diffuser, the second acoustic diffuser being provided at the excitation surface, wherein a diffusing structure of the second acoustic diffuser faces the cavity.
Method of production of a transducer, comprising
- providing a casing, the casing defining a cavity,
- producing a column type acoustic diffuser by a 3D printing process,
- providing the column type acoustic diffuser on an emitting surface of the casing, such that the columns of the column type acoustic diffuser face the cavity,
- providing at least one transducer element at an excitation surface of the casing, the excitation surface being arranged opposite to the emitting surface,
- producing a second column type acoustic diffuser by a 3D printing process,
- providing the second column type acoustic diffuser at the excitation surface of the casing, such that the columns of the column type acoustic diffuser face the cavity.
A transducer for emitting and receiving acoustic waves, the transducer comprising a casing, the casing forming a cavity, the casing comprising:
- an excitation surface and an emitting surface which is arranged opposite to the excitation surface,
- a transducer element, the transducer element being provided at the excitation surface,
- an acoustic diffuser, the acoustic diffuser being provided at the emitting surface of the casing, wherein a diffusing structure of the acoustic diffuser faces the cavity;
- wherein the transducer comprises a needle transducer, the needle transducer extending through the cavity and unto the emitting surface.
A transducer for emitting and receiving acoustic waves, the transducer comprising a casing, the casing forming a cavity, the casing comprising:
- an excitation surface and an emitting surface which is arranged opposite to the excitation surface,
- an acoustic diffuser, the acoustic diffuser being provided at the emitting surface of the casing, wherein a diffusing structure of the acoustic diffuser faces the cavity;
- wherein the transducer further comprises a first transducer element, a second transducer element and a third transducer element, the second transducer element and the third transducer element being provided at the excitation surface and the first transducer element being in contact with the emitting surface.
Dependencies are inferred from the claim text.