Displacement sensor and camera module having the same
US10142527B2 · kind B2 · utility
1Cited by
2References
18Claims
0Family size
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Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Feb 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/646
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A displacement sensor comprises a first frame; a second frame; a first coil wherein a first voltage formed at the first frame is applied; a second coil formed at the first frame, wherein a current of a second voltage flows 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. Since two coils are embodied in one frame, the number of process times can be reduced and space utility can be enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.