Optical keyswitch and method

Details Optical keyswitch and method Optical keyswitch and method

H - Electricity

03

J

340/179

H03J 5/02 (2006.01) G06F 3/033 (2006.01)

Patent

CA 1267202

OPTICAL KEYSWITCH AND METHOD Abstract of the Disclosure A programmable touch panel comprises an interactive control/display panel having the capability of entering and updating information to a host computer via a plurality of multifunction programmable keys. An optical switch is associated with each key for operator selection. Each key includes a light source mounted to a circuit board for sending a light beam through a hole in a heat sink toward a reflector that directs the beam across a touch panel. A second reflector then directs the beam through a second hole in the heat sink toward a detector mounted on the circuit board.

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