Detection device and identification system
US11035813B2 · kind B2 · utility
2Cited by
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16Claims
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Key dates
| Filing date | Jan 28, 2019 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Aug 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/161
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detection device includes a light refraction structure and a resistance detection circuit. The light refraction structure includes a substrate, a conductive layer, and a refraction layer. The conductive layer and the refraction layer are formed on the substrate. The conductive layer includes a resistance. The resistance detection circuit is electrically coupled to the conductive layer and is adapted to detect the resistance of the conductive layer. The resistance detection circuit generates a detection signal according to a change in the resistance, and the detection signal represents a state of the refraction layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.