Methods and apparatus for ultrasonic lens cleaner using configurable filter banks
US10384239B2 · kind B2 · utility
19Cited by
26References
20Claims
0Family size
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Key dates
| Filing date | Apr 20, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Apr 20, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0006
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods and apparatus for ultrasonic lens cleaner using configurable filter banks are disclosed. In certain described examples, the methods and apparatus can expel fluid from a droplet on an optical surface using an ultrasonic transducer mechanically coupled to the optical surface and having first and second resonant frequency bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.