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. 25, 2000
Filed:
Jul. 14, 1998
Robert M Perchak, Dayton, OH (US);
Mirage Development Ltd, Dayton, OH (US);
Abstract
A passive target device has as its principal element an optical axcicon having an optical axis which is intended to be aligned with a reference beam. The axicon has a geometric center line coincident with its optical axis and includes at least one facet which will form a reference image when the optical axis is aligned with the reference beam, such image being symmetrical in a plane perpendicular to the optical axis. This optical axicon is mounted in a holder, such as a tubular body, having an inlet window and a output or display window, and is adapted to be supported a distance away from the source of the beam, which may vary from less than one meter up to several hundred meters. Different forms of optical elements may be utilized with the axicon, the elements employing one or more like facets arranged symmetrically about the optical axis.