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Device to control the aiming and focusing of laser systems on a target

  • US 6,040,566 A
  • Filed: 01/20/1998
  • Issued: 03/21/2000
  • Est. Priority Date: 01/31/1997
  • Status: Expired due to Fees
First Claim
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1. A device for aiming and focusing a laser beam on a target, said device comprising:

  • at least one reflecting false target positioned and oriented substantially identically to a target to be impinged by a laser beam;

    a separator device configured to receive the laser beam, transmit a first portion of the laser beam having a first wavefront, and reflect a second portion of the laser beam having a second wavefront, said first wavefront and said second wavefront having substantially the same wavelength;

    a lens configured to receive the second portion of the laser beam reflected by the separator device and to focus the second portion of the laser beam on the reflecting false target;

    a first mirror configured to receive the second portion of the laser beam reflected off of the reflecting false target and to reflect the second portion of the laser beam;

    a second mirror configured to receive the second portion of the laser beam reflected off of the first mirror, reflect the second portion of the laser beam, receive the first portion of the laser beam transmitted by the separator device, and transmit the first portion of the laser beam, said second mirror being a semi-reflective mirror; and

    a wavefront analyzer configured to receive the first portion of the laser beam transmitted by the separator device, receive the second portion of the laser beam reflected by the second mirror, and make aiming and focusing measurements for t he laser beam by performing a differential analysis of the first wavefront and the second wavefront.

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