Keypad having a reflective contact

Details Keypad having a reflective contact Keypad having a reflective contact

1994-10-14

1996-04-30

Recla, Henry J.

Electricity: circuit makers and breakers

Electric switch details

Indicators

200313, 200310, 200DIG47, H01H 900

Patent

active

055127185

ABSTRACT:
A backlit component which is suitable for use in an illuminated graphic keypad in an instrument panel of an automobile The backlit component is adapted to be illuminated by a light source located beneath the keypad, but off to one side of the backlit component in order to accommodate an actuator member extending from the backlit component and an electrical switch actuated by the actuator member when the backlit component is pressed. The backlit component is formed from an optically conductive material to enable light emitted by the light source to be transmitted through the component to an insignia formed on the exposed or exterior surface of the component. The backlighting intensity of the backlit component is enhanced by forming the actuator member from an optically conductive material, and equipping the actuator member with a reflective surface such that light emitted from the light source is reflected toward the insignia. The actuator member is also equipped with a contact surface for actuating the electrical switch. As such, the backlit component is configured for optimal use of the available light in order to produce the backlighting effect desired for a given application.

REFERENCES:
patent: 5252798 (1993-10-01), Kamada
patent: 5280145 (1994-01-01), Mosier et al.

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