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:
Feb. 16, 2021
Filed:
May. 17, 2018
Sicpa Holding SA, Prilly, CH;
François Huot, Pully, CH;
Pablo Sempere, Bernex, CH;
Todor Dinoev, Chavannes-près-Renens, CH;
Nicola Duca, Monthey, CH;
SICPA HOLDING SA, Prilly, SE;
Abstract
An illumination device for an optical system of a reader apparatus, comprising a light source () disposed concentrically around an annular hollow body (), an external light reflector () for redirecting light to illuminate a zone at its distal end (), and a reflector element () with a mirror finish outer surface (). The internal wall () of the external light reflector () is made of reflective material, having a first portion () with increasing cross sections from a proximal end () to a first region () with maximum cross section, and a second portion () with decreasing cross sections from the first region () to a second region () with minimum cross section. The reflector element () is arranged in front of the light source () to redirect light towards the first portion () of the external light reflector (). The illumination device () achieves, in a reduced space, high optical efficiency and uniform illumination on the mark to read, avoiding specular reflection.