Ultrasonic transducer, ultrasonic sensor, object detection apparatus, object detection method, and object detection program
US12044808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2022 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Jan 19, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2015/939
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic transducer includes a transducer case and an ultrasonic element. The transducer case is formed into a bottomed, cylindrical shape having a side plate portion and a bottom plate portion that seals one end side of the side plate portion in an axial direction to configure a diaphragm. The ultrasonic element is fixedly supported to the bottom plate portion to face an interior space surrounded by the side plate portion and the bottom plate portion. The ultrasonic element is arranged in a position being offset in an in-plane direction orthogonal to the axial direction relative to a center position of the diaphragm in the in-plane direction to be capable of generating a first transmission wave having first directivity characteristics and a second transmission wave having second directivity characteristics that are directivity characteristics differing from the first directivity characteristics and in which sound pressure in the axial direction is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.