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Dynamic mirror alignment device for the interferometer of an infrared spectrometer

  • US 5,239,361 A
  • Filed: 10/25/1991
  • Issued: 08/24/1993
  • Est. Priority Date: 10/25/1991
  • Status: Expired due to Term
First Claim
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1. A dynamic mirror alignment device for the interferometer of a spectrometer comprising:

  • (a) a base;

    (b) a mirror support to which an interferometer mirror may be mounted;

    (c) means for mounting the mirror support to the base to allow resilient pivoting of the mirror support about an initial position in two orthogonal axes when torque is applied to the mirror support;

    (d) two drive coils mounted to the periphery of one of the base or the mirror support and each coil having four quardrants, each coil having straight coil sections along two opposite quadrants which are at a lower position with respect to the other of the mirror support or base, and coil sections which are at a higher position, the two drive coils mounted so that the straight lower sections of each occupy an adjacent quadrant;

    (e) means on the other of the mirror support or base for applying a magnetic field through each of the lower sections of the coils to intersect the lower coil sections in a direction preferably substantially parallel to the axes about which the mirror support pivots, whereby the mirror support will tend to tilt about one axis in one direction when current is supplied to one coil in one direction and about the same axis in the other direction when current is supplied in the opposite direction through that coil, and similarly whereby current supplied in one direction through the other drive coil will tend to tilt the mirror support about the other orthogonal axis in one direction and will tend to tilt the mirror support in the opposite direction when current is supplied to the drive coil in the opposite direction.

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