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. 20, 2006
Filed:
Feb. 01, 2001
Guido Maurizio Oliva, Rovigo, IT;
Guido Maurizio Oliva, Rovigo, IT;
Datalogic S.p.A., Bologna, IT;
Abstract
An optical device which emits a laser light beam () comprises a laser light beam emission source ()(for example, a semiconductor laser diode) including a source of the laser light beam housed in a package () provided with a light beam emission window (). The emission window is shaped so as to be a diaphragm () which selects a predetermined portion of the light beam. The size of the window is smaller than the size of the light beam in a transversal cross section taken at the emission window. Moreover, the device comprises a lens () for focusing the portion of the light beam. The focusing lens can in turn be housed in the emission window and be itself a diaphragm. In particular, the lens is a Fresnel or diffractive lens.