Infrared collimator

  • US 4,588,253 A
  • Filed: 05/23/1984
  • Issued: 05/13/1986
  • Est. Priority Date: 05/23/1984
  • Status: Expired due to Term
First Claim
Patent Images

1. An infrared collimator comprising:

  • (a) a barrel housing having front and rear end portions;

    (b) an infrared energy emitting source mounted in the rear end portion of said barrel;

    (c) a mask over said source, said mask having apertures therethrough to produce a reticle beam pattern;

    (d) a mirror assembly including;

    (i) a concave concentrator having a central through bore and mounted coaxially in said barrel; and

    (ii) a convex reflector mounted coaxially in said barrel and sized approximately equal to said through bore;

    (e) whereby infrared energy in said reticle beam pattern is reflected respectively by said concave concentrator and said convex reflector and directed outwardly in a coherent, collimated beam through said barrel;

    (f) said source being an automatic temperature controlling unit having a resistance heated surface plate maintained at an adjustable differential with respect to a second reference temperature.

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