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US 2003/0112618 A1Published application
Device and method for illuminating input keys
OwnerMary Ann Bryantinventor
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Abstract
The invention provides a device and method for illuminating keypad-type input devices, utilizing a light source, such as an LED, and transmitting the output of the light source to individual input loci via a fiber optic light guide.
Claims18
A device for illuminating an input device, comprising
- a light source,
- a fiber optic light guide comprising an inlet and an outlet, wherein said inlet is optically coupled to said light source, and
- an input locus, wherein said outlet is optically coupled to said input locus.
A device for illuminating an input device, comprising
- a electrical power source,
- a light source, wherein said light source is electrically coupled to said electrical power source,
- a fiber optic light guide comprising an inlet and an outlet, wherein said inlet is optically coupled to said light source, and
- an input locus, wherein said outlet is optically coupled to said input locus.
1 more element
A method of illuminating an input device, comprising
- illuminating a light source,
- directing the light from said light source into the inlet of a light guide, and
- directing the light emitted from the outlet of said light guide to illuminate an input locus of the input device.
Dependencies are inferred from the claim text.