Oscillating linear deflection device

Details Oscillating linear deflection device Oscillating linear deflection device

1987-04-13

1989-05-09

Corbin, John K.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Retarded or delayed type

350484, 350DIG3, 335229, G02B 2610, G02B 2608, H01F 700

Patent

active

048283479

ABSTRACT:
A drive with a D.C. motor is provided for the oscillating deflection of a mirror for the line by line scanning of pictures. It is supplied with alternating current so that the rotor executes a harmonic oscillation. To fix the zero position or the oscillation mean position, a magnet with an outwardly oriented magnetic pole is fixed to the mirror carrier. Another magnet is fixedly disposed on the housing thus that a reciprocal pole to the pole on the mirror carrier is opposite to it. Thus it is not necessary to overcome a force increasing proportionally to the deflection which also would interfere with the oscillation, as in the known zero position by means of a torsion bar.

REFERENCES:
patent: 4073567 (1978-02-01), Lakerveld et al.
patent: 4135119 (1979-01-01), Brosens
patent: 4596970 (1986-06-01), Vanderlaan et al.
patent: 4600910 (1986-07-01), Vanderlaan

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