Driving mechanism for driving an oscillating polarizer

Details Driving mechanism for driving an oscillating polarizer Driving mechanism for driving an oscillating polarizer

1989-08-29

1991-09-10

Willis, Davis L.

Optics: measuring and testing

By polarized light examination

With polariscopes

G01J 400

Patent

active

050468502

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.

REFERENCES:
patent: 4849623 (1989-07-01), Osaki et al.
Bilenko et al. "Measurement of the Inclination of the Axis of the Light-Polarization Ellipse", Pribory i Tekhnika Eksperimenta, No. 6, pp 218-220, l2/1975.

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