The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 2015
Filed:
Apr. 14, 1989
David Fink, Los Angeles, CA (US);
David Fink, Los Angeles, CA (US);
Raytheon Company, Waltham, MA (US);
Abstract
Point-ahead laser pointer-tracker systems with stabilization and wavefront correction in both transmit and receive directions provide arrangements for sensing the wavefront correction required in two different directions, one in the received target image direction for good image quality in the tracker and the other in the point-ahead direction for good beam quality on the target. In the several embodiments, a marker beam is aligned with the target image. Wavefront aberration correction signals are produced by an output wave sensor that senses the wavefront of the marker beam in the received target image direction and the wavefront of the source laser beam in the point-ahead transmit direction. The alignment is maintained by use of the output wave sensor signals together with signals from the tracker of the target and current aimpoint positions. These signals, compared in selected pairs, control mirrors in various legs of the optical system to put the current aimpoint on the desired aimpoint and to align the marker beam along the received target image direction.