Optical interruption sensor with opposed light emitting diodes
US8981280B2 · kind B2 · utility
0Cited by
31References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2010 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Nov 29, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical-interrupter provides a mechanically integrated electric light source and electric light sensor positioned across a gap to transmit a light beam across the gap that may be interrupted with an opaque vane. The optical-interrupter uses conventional LEDs for both the light source and a light receiver. An integrated circuit comparator may be used to provide an adjustable threshold for the determination of whether the light beam is blocked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.