Segmented light guide
View Patent ↗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.
1. 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. The segmented light guide of claim 1 , said light channeling layer comprising a resilient sheet.
3. The segmented light guide of claim 1 , said light sources optically coupled with said plurality of segments operable to independently illuminate different ones of said plurality of segments at different times and said at least another one light source optically coupled with said plurality of segments operable to illuminate multiple ones of said plurality of segments simultaneously comprising at least one LED.
4. The segmented light guide of claim 1 , said 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 being located adjacent edges of said light channeling layer.
5. The segmented light guide of claim 1 , said slit having walls perpendicular to a surface of said light channeling layer.
6. The segmented light guide of claim 1 , said slit having angled walls that are not perpendicular to a surface of said light channeling layer.
7. 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.
8. The portable electronic device of claim 7 , said substantially light transparent sheet comprising a resilient sheet.
9. The portable electronic device of claim 7 , comprising a device selected from the group consisting of a mobile phone, personal digital assistant, camera, global positioning system (GPS) device, and a portable computer.
10. The portable electronic device of claim 7 , said first region and said second region comprising portions of a keypad.
11. The portable electronic device of claim 7 , wherein said first segment and said second segment remain connected although partially divided by said slit.
12. The portable electronic device of claim 7 , wherein said first segment and said second segment are fully separate and said slit comprises a gap remaining when said first and second segments have been placed adjacent one another.