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:
Apr. 27, 1982
Filed:
May. 05, 1980
John M Fitts, Santa Monica, CA (US);
Hughes Aircraft Company, Culver City, CA (US);
Abstract
An auto-alignment system for high energy lasers wherein a low energy reference beam is provided at the vertex of a primary mirror that is grated to diffract a low energy holographic replica of the high energy beam. A photodetector based servo-control system compares the line-of-sight of the reference beam to that of the low energy replica and generates control signals which actuate a beam steering mirror to reposition the main beam. The servo-control system also includes a wavefront sensor. This sensor analyzes the wavefront profile of the low energy replica and generates control signals which actuate a deformable mirror to correct spurious wavefront aberrations.