Multi-channel light communications via waveguides
US10958340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | May 9, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12138
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Devices implementing light communications use waveguides to efficiently collect wavelength-specific light used for the light communications and propagate that collected light to a sensor. More particularly, light comprising a plurality of wavelengths and collected from one or more entrances propagates along a TIR waveguide until disrupted by a diffusive element, which effectively directs the propagating light to one or more sensors. Each sensor detects a subset of the plurality of wavelengths. In so doing, the solution presented herein increases the amount of light available for the light communications and/or reduces the number of sensors needed for the light communications, e.g., by providing light collected from multiple different locations to a single sensor. The waveguide solution presented herein may be implemented inside a device and/or along an exterior surface, e.g., housing or casing, of a device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.