Proximity sensor with light inhibiting barrier comprising a gap having a cross-section with parallel walls substantially perpendicular to the top surface of an optically transmissive material
US11567198B2 · kind B2 · utility
0Cited by
4References
17Claims
0Family size
Inventors
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Mar 24, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4813
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor comprising a light emitter and light detector coupled directly with or formed directly on a lead frame and directly covered and encapsulated by a layer of light transmissive compound. A gap in the light transmissive compound between the light emitter and the light detector wherein in some embodiments the gap can be filled with a light blocking barrier material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.