Proximity sensor and proximity sensing method using light quantity of reflection light
US9243904B2 · kind B2 · utility
1Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2013 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Jul 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/94116
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A proximity sensor and proximity sensing method using a change in light quantity of a reflected light are disclosed. The proximity sensor may include a quantity change detection unit which detects a change in a quantity of reflected light which is output light which has been reflected by an object, where an intensity of the output light changes, and a proximity determination unit which determines a proximity of the object to the quantity change detection unit based on a change in the intensity of the output light and the detected change in the quantity of the reflected light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.