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:
May. 11, 1999
Filed:
Jan. 20, 1998
Murty Venkata Mantravadi, Carson, CA (US);
Dennis Hilliard Rose, Claremont, CA (US);
James Timothy Hall, Torrance, CA (US);
Dennis Carl Richman, Irvine, CA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A scanner transmits a generally collimated beam of radiation such that the beam rotates about an axis to form a conical scanning pattern. The scanner comprises a concave parabolic reflector having a geometric axis and a focus, a rotation mechanism for effecting rotation of the concave parabolic reflector about a rotation axis which is angularly offset with respect to the geometric axis of the concave parabolic reflector, an opening formed in the concave parabolic reflector proximate the rotation axis thereof, and a convex parabolic reflector disposed along the rotation axis of the concave parabolic reflector and having a focus which is approximately co-located with the focus of the concave parabolic reflector. Directing collimated radiation through the opening formed in the concave parabolic reflector and onto the convex parabolic reflector while rotating the concave parabolic reflector about the rotation axis thereof effects transmission of a generally collimated beam of radiation such that the beam rotates about the rotation axis so as to form a conical scanning pattern.