Transmittting light with lateral variation
US8594470B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2013 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | May 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4298
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Input light, such as from an optical sensor or stimulus-wavelength converter, includes one or more light or dark sub-bands. The input light is transmitted, such as through a transmissive layer or transmission component, to obtain effects due to transmission with lateral variation. A detector can, for example, obtain spectral information or other photon energy information about the sub-bands due to lateral variation. For each light or dark sub-band, a transmission component can, for example, provide a respective light or dark spot, and spot position can be used to obtain spectral information such as absolute wavelength or wavelength change. A photosensing component can sense or detect transmitted light or output photons, such as with a photosensor array or a position-sensitive detector. Circuitry can use photosensed quantities to obtain, e.g. a differential signal or information about time of wavelength change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.