Proximity switch assembly having varying size electrode fingers
First Claim
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1. A proximity switch comprising:
- a sensing pad; and
a proximity sensor disposed near a perimeter of the sensing pad and generating an activation field proximate to the sensing pad, said proximity sensor comprising first electrode fingers having multiple lengths interdigitated with second electrode fingers having multiple lengths, wherein differing spacings exist between adjacent first and second electrode fingers.
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Abstract
A proximity switch is provided having a sensing pad and a proximity sensor disposed near a perimeter of the sensing pad to generate an activation field proximate to the sensing pad. The proximity sensor includes a plurality of interdigitated electrode fingers having differing lengths and spacings. The switch may be integrally formed as a lamp and proximity switch assembly.
441 Citations
20 Claims
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1. A proximity switch comprising:
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a sensing pad; and a proximity sensor disposed near a perimeter of the sensing pad and generating an activation field proximate to the sensing pad, said proximity sensor comprising first electrode fingers having multiple lengths interdigitated with second electrode fingers having multiple lengths, wherein differing spacings exist between adjacent first and second electrode fingers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A proximity switch comprising:
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a sensing pad; and a proximity sensor disposed substantially around a perimeter of the sensing pad and comprising inner electrode fingers interdigitated and electrically coupled to outer electrode fingers to generate an activation field proximate to the sensing pad, wherein the inner and outer electrode fingers each have different lengths and different spacings exist between adjacent electrode fingers on one side of the sensing pad as compared to another side of the sensing pad. - View Dependent Claims (11, 12)
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13. A lamp and proximity switch assembly comprising:
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a lens having a transparent window; a light source disposed to illuminate light through the transparent window of the lens; and a proximity sensor disposed substantially around a perimeter of the transparent window and generating an activation field proximate to the transparent window, said proximity sensor comprising a plurality of interdigitated electrode fingers having differing lengths and spacings between adjacent electrode fingers. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification