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1. CA2169865 - OPTICAL REFLECTION SENSING ARRANGEMENT FOR SCANNING DEVICES

Office
Canada
Application Number 2169865
Application Date
Publication Number 2169865
Publication Date 21.08.1997
Grant Number
Grant Date 03.07.2007
Publication Kind C
IPC
G02B 26/10
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
G07D 7/12
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR OF VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
06using wave or particle radiation
12Visible light, infra-red or ultraviolet radiation
CPC
G06K 7/10564
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
10554Moving beam scanning
10564Light sources
G06K 7/10574
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
10554Moving beam scanning
10564Light sources
10574Multiple sources
G06K 7/10762
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
10712Fixed beam scanning
10762Relative movement
G07D 7/121
GPHYSICS
07CHECKING-DEVICES
DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
7Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
06using wave or particle radiation
12Visible light, infra-red or ultraviolet radiation
121Apparatus characterised by sensor details
Applicants CASHCODE COMPANY INC.
Title
(EN) OPTICAL REFLECTION SENSING ARRANGEMENT FOR SCANNING DEVICES
(FR) DETECTEUR DE RAYONS LUMINEUX REFLECHIS POUR DISPOSITIFS DE BALAYAGE
Abstract
(EN)
The optical scanner uses a unique compound optical system for processing reflected radiation in a manner to reduce the variations caused by changing position of a scanned substrate in a guideway. Two sources of radiation are directed at similar angles to the surface to be screened and the radiation is distributed over a larger area. Changes in position of the substrate in the guideway change the actual area reflecting the radiation sensed by the sensor, but the size of the reflecting area does not appreciably change. Any change effects both radiation systems in a similar manner.

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