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US 7,740,390 B2Granted
Segmented light guide
AssigneeAvago Technologies ECBU IP (Singapore) Pte. Ltd.
InventorsSian Tatt Lee, Eit Thian Yap, Choon Guan Ko, Fook Chuin Ng
Life of this patent
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Abstract
An exemplary embodiment of a segmented light guide includes a light channeling layer having at least one slit dividing the light channeling layer into a plurality of segments, and at least one LED associated with the light channeling layer. The slit substantially prevents light from migrating in the segmented light guide between adjacent segments that are divided by the slit.
Claims12
A segmented light guide comprising:
- a light channeling layer having at least one slit dividing said light channeling layer into a plurality of segments;
- and
- light sources optically coupled with said plurality of segments operable to independently illuminate different ones of said plurality of segments at different times;
- and
- at least another one light source optically coupled with said plurality of segments operable to illuminate multiple ones of said plurality of segments simultaneously.
2 more elements
A portable electronic device, comprising:
- a first region to be illuminated;
- a second region to be illuminated;
- and
- a segmented light guide having a first segment adjacent said first region and a second segment adjacent said second region, said segmented light guide comprising a substantially transparent sheet having a slit between said first segment and said second segment;
- said segmented light guide further comprising
- a first light source optically coupled with said first segment and a second light source optically coupled with said second segment, said first and second light source being independently operable, whereby said first region and said second region may be illuminated by said first light source and said second light source at different times;
- and
- a third light source optically coupled with both said first segment and said second segment whereby said first region and said second region may be simultaneously illuminated by said third light source.
5 more elements
Dependencies are inferred from the claim text.