Optical device and optical unit including optical device
US12140753B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Dec 1, 2020 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Aug 20, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device includes a protective cover, a housing, and a vibrating body that vibrates the protective cover by selecting, from multiple vibration modes in which the protective cover is vibrated, a cleaning mode in which vibration displacement of the protective cover becomes maximum and a higher-order heating mode in which the number of nodes is larger than that in the cleaning mode. In the heating mode, the position of the maximum vibration displacement in this vibration mode is within a region of the protective cover that corresponds to the field of view of the optical sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.