Driving mechanism for driving an oscillating polarizer
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United States of America Patent
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-
Sep 10, 1991
Grant Date -
N/A
app pub date -
Aug 29, 1989
filing date -
Sep 7, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a driving mechanism for driving an oscillating polarizer in a polarimeter, the polarizer is driven by a stepper motor which is controlled by a computer to make a reciprocating movement. A reference position sensor is connected to the oscillating polarizer, to provide a reference signal when the oscillating polarizer is in a determined position. A zero position of the reference position sensor is obtained by spacing the reference position sensor a predetermined number of steps of the stepper motor.
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