OPTICAL KEYSWITCH
    66.
    发明申请
    OPTICAL KEYSWITCH 审中-公开

    公开(公告)号:US20190214987A1

    公开(公告)日:2019-07-11

    申请号:US16240021

    申请日:2019-01-04

    CPC classification number: H03K17/968 G01J1/0238

    Abstract: An optical keyswitch includes a casing having a movable portion, a shaft movably disposed on the casing, a resilient member accommodated in the casing, and a switch module including a circuit board, an emitter, and a receiver. The emitter emits an optical signal along an optical path to the receiver. When the shaft is at a non-pressed position, the movable portion has a first spatial relation with the optical path, and the receiver receives the optical signal of a first intensity. When the shaft moves, in response to a pressing force, to a pressed position, the shaft compresses the resilient member and pushes the movable portion to move, so the movable portion no longer has the first spatial relation with the optical path, the optical signal received by the receiver has a second intensity different from the first intensity, and the switch module is triggered to generate a triggering signal.

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