Method and system for sensing light reflective surfaces in a reflective photo-electric sensing system including a light channeling device and a foreground suppression performance
US9151865B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Jan 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V8/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A reflective photo-electric sensing system includes a transmitter for the transmission of light and a reflector for reflecting the light. The reflector being positioned in a far field. A light channeling device receives reflected light from the far field or from a near field and channels the received reflected light to a near field receiver or a far field receiver dependent on an angle of the received reflected light. An electrical signal is generated at the near field receiver or the far field receiver. A controller evaluates the electrical signal of the near field receiver and the electrical signal of the far field receiver and generates an actuation signal dependent on the evaluation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.