Patent · US Active

Use of waveguides and lenses to improve light communication reception in devices

US11349567B2 · kind B2 · utility

1Cited by

8References

21Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Alexander Hunt · Tygelsjö, SE
Andreas Kristensson · Södra Sandby, SE
Magnus Olsson · Uppsala, SE

Key dates

Filing date	Mar 13, 2019
Grant date	May 31, 2022
Priority date	—
Expiry date	Oct 29, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG02B6/0041
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Devices implementing light communications use waveguides to efficiently collect light used for the light communications and propagate that collected light to a sensor. More particularly, light collected from one or more sensors propagates along a TIR waveguide until disrupted by a diffusive element, which effectively directs the propagating light to a sensor. 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.