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:
Sep. 22, 2009
Filed:
Apr. 24, 2006
Gabriele Corrain, San Marino di Bentivoglio, IT;
Gabriele Corrain, San Marino di Bentivoglio, IT;
Datalogic, S.p.A., Lippo di Calderara di Reno, IT;
Abstract
A device for focusing a laser light beam includes an emission source of a laser light beam along an optical emission path, first focusing means of the laser light beam in a focusing point (F) located at a focusing distance (D), means for adjusting the position of the focusing point (F) relative to the device, and means for detecting the focusing distance (D) active in feedback on the adjustment means, wherein the detection means detects a parameter characteristic of the light beam leaving the first focusing means and representative of the focusing distance (D). The characteristic parameter is the wavefront radius of curvature of the light beam leaving the first focusing means.