Illumination of input device
First Claim
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1. An input device, comprising:
- an input mechanism operative to move along an axis, the input mechanism having a front face and a back face;
a housing mechanically connected to the input mechanism;
a light source located beneath the input mechanism;
a light guide optically coupled to the light source and the input mechanism and entirely located beneath the input mechanism;
whereinthe light guide redirects at least some light emitted from the light source through the back face of the input mechanism and through the front face of the input mechanism; and
wherein the light guide concentrates the redirected light on a portion of the input mechanism.
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Abstract
Input devices having backlighting for associated input mechanisms. The backlighting may be supplied by a light source coupled to a light guide. Both the light guide and light source may be located completely beneath the input mechanism and above a mechanical support for the mechanism. Each input mechanism generally has its own dedicated light guide and light source.
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Citations
20 Claims
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1. An input device, comprising:
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an input mechanism operative to move along an axis, the input mechanism having a front face and a back face; a housing mechanically connected to the input mechanism; a light source located beneath the input mechanism; a light guide optically coupled to the light source and the input mechanism and entirely located beneath the input mechanism;
whereinthe light guide redirects at least some light emitted from the light source through the back face of the input mechanism and through the front face of the input mechanism; and wherein the light guide concentrates the redirected light on a portion of the input mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for illuminating an input mechanism, comprising:
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providing power to a light source located beneath the input mechanism through an electrical connection between a portion of the input mechanism and a housing for the input mechanism; directing light emitted from the light source by changing a direction of travel of the light, such that the light passes through the input mechanism; concentrating the directed light on a portion of the input mechanism; and in response to a disruption in the electrical connection, the disruption caused by a motion of the input mechanism, ceasing to provide power to the light source. - View Dependent Claims (12, 13, 14, 15)
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16. An input device, comprising:
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a plurality of input mechanisms mechanically attached to an input device housing; a plurality of light guides, each of the plurality of light guides located beneath and adjacent to each of the plurality of input devices in a one-to-one relationship, each of the light guides not extending beyond an outer edge of the associated input mechanism; a plurality of light sources, at least one light source of the plurality of light sources coupled to each light guide, each of the at least one light sources emitting light into the coupled light guide; and a plurality of mechanical support underlying the plurality of light guides and the plurality of input mechanisms; wherein each of the plurality of light guides concentrate light emitted by a respective one of the plurality of light sources onto a portion of the respective associated input mechanism. - View Dependent Claims (17, 18, 19, 20)
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Specification