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1. WO1996006406 - OPTICAL PATH EQUALIZER

Publication Number WO/1996/006406
Publication Date 29.02.1996
International Application No. PCT/US1995/010314
International Filing Date 14.08.1995
Chapter 2 Demand Filed 11.03.1996
IPC
G06K 7/10 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
CPC
G06K 2207/1013
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
2207Other aspects
1013Multi-focal
G06K 7/10811
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers, ; e.g. for reading patterns
10by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
10544by scanning of the records by radiation in the optical part of the electromagnetic spectrum
10792Special measures in relation to the object to be scanned
10801Multidistance reading
10811Focalisation
Applicants
  • UNITED PARCEL SERVICE OF AMERICA, INC. [US/US]; 55 Glenlake Parkway, N.E. Atlanta, GA 30328, US
Inventors
  • BJORNER, Johannes, Arne, Schionning; US
  • SMITH, Steven, Lew; US
Agents
  • HAWKINS, Holmes, J., III ; Jones & Askew 37th floor 191 Peachtree Street, N.E. Atlanta, GA 30303-1769, US
Priority Data
08/292,40018.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL PATH EQUALIZER
(FR) SYSTEME POUR EGALISER DES TRAJETS OPTIQUES
Abstract
(EN)
An optical system for adjusting the optical path between a detector and an object, such as an information-encoded label affixed to a package. The optical system comprises a pair of movable m mirrors (60, 80) and an array of fixed mirrors (70). One of the movable mirrors is positionable to direct an image reflected from the object to any one of the array of fixed mirrors. The other of the movable mirrors is positionable to direct the image reflected by the fixed mirror to the detector (20). The positions of the movable mirrors are adjusted responsive to variations in the measured height of different objects.
(FR)
L'invention concerne un système optique pour ajuster le trajet optique entre un détecteur et un objet, tel qu'une étiquette portant une information en code fixée à un emballage. Le système optique comprend une paire de miroirs mobiles (60, 80) et un ensemble de miroirs fixes (70). Un des miroirs mobiles est positionné pour diriger une image réfléchie de l'objet sur un quelconque des miroirs fixes. L'autre miroir mobile est positionné pour diriger l'image réfléchie par le miroir fixe sur le détecteur (20). Les positions des miroirs mobiles sont ajustées en fonction des variations de la hauteur mesurée des différents objets.
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