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US 9,910,211 B2Granted
Light guide and keyboard backlight
AssigneeLumitex, Inc.
InventorsGregg M Kloeppel, David Larson, Peter Broer
Life of this patent
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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.
Claims30
A system comprising:
- 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 key, wherein the substantially planar light guide panel comprises the plurality of keys switch hole extending therethrough and positioned underneath each of the plurality of keys;
- a light source disposed on the light guide panel and configured to generate a light;
- a plurality of curved light emission features;
- each of the plurality of curved light emission features disposed under a key of the plurality of the keys and comprising a plurality of wells, wherein the plurality of wells are arranged relative to the key switch hole such that the plurality of wells substantially surround the key switch hole, wherein the plurality of wells are configured to direct a portion of the light toward the key;
- and
- a plurality of light management features disposed on the light guide panel, each of the plurality of the light management features configured to partially reflect incident light within the light guide panel towards the plurality of wells of one of the curved light emission features and partially reflect the incident light within the light guide panel away from another one of the curved light emission features.
5 more elements
Dependencies are inferred from the claim text.