Position controlling device
AssigneeOlympus Optical Co., Ltd.
InventorKosaku Tsuboshima
Life of this patent
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Abstract
A position controlling device including a shielding plate which can be moved by a motor, three pairs of light emitting elements and light receiving elements arranged on both sides of the shielding plate and a motor controlling circuit which can control the normal rotation, reverse rotation and stop of the motor with output signals from the light receiving elements and a foot switch or centering switch simple in the formation and making no misoperation with a noise.
Claims7
A position controlling device comprising a first means for detecting the position of a movable member, an encoder which is connected to said first means and can convert an input signal from said first means to a predetermined output signal, a second means which is connected to said encoder and can control the drive of a motor for moving said movable member, a first switch means which is connected to said second means and can remote-control the rotating direction of said motor and a second switch means which is connected to said second means and can automatically return said movable member to the center position of its moving range, said motor being made inoperative by the operation of said first and second means when said movable member is in the limit position of its moving range.
Dependencies are inferred from the claim text.