Patent · US Active

Light guide and keyboard backlight

US9910211B2 · kind B2 · utility

10Cited by

5References

30Claims

0Family size

Assignee

Lumitex, Inc. · US

Inventors

Gregg M. Kloeppel · Rua Sebastião Félix da Fonseca, US
David P. Larson · Salt Lake City, US
Peter Broer · Bratenahl, US

Key dates

Filing date	Mar 13, 2013
Grant date	Mar 6, 2018
Priority date	—
Expiry date	Sep 10, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2217/96046
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A backlit system comprises a base panel, a plurality of keys disposed on the base panel, a substantially planar light guide panel disposed between the base panel and the plurality of keys, at least one light source disposed on the light guide panel, and at least one light management feature disposed on the light guide panel. The at least one light management feature is configured to at least partially reflect incident light within the light guide panel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.