Displacement sensor and camera module having the same
US10587787B2 · kind B2 · utility
0Cited by
2References
19Claims
0Family size
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Key dates
| Filing date | Oct 23, 2018 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Oct 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A displacement sensor includes a first frame; a second frame; a first coil including a first voltage formed at the first frame applied to the first coil; a second coil formed at the first frame including a current of a second voltage flowing in the second coil corresponding to a voltage of the first frame if the first voltage is applied to the first coil; a conductor coupled to the second frame; and a detector for calculating a relative position between the first frame and the second frame by monitoring the second voltage. Further, a size of the second voltage is reduced if the second coil is moved closer to the conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.