GB1388131A - Reader mechanism - Google Patents

Reader mechanism

Info

Publication number
GB1388131A
GB1388131A GB1233572A GB1233572A GB1388131A GB 1388131 A GB1388131 A GB 1388131A GB 1233572 A GB1233572 A GB 1233572A GB 1233572 A GB1233572 A GB 1233572A GB 1388131 A GB1388131 A GB 1388131A
Authority
GB
United Kingdom
Prior art keywords
characters
diaphragm
light
focus region
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1233572A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zellweger Uster AG
Original Assignee
Zellweger Uster AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zellweger Uster AG filed Critical Zellweger Uster AG
Publication of GB1388131A publication Critical patent/GB1388131A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
    • G06K7/10871—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels randomly oriented data-fields, code-marks therefore, e.g. concentric circles-code

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Artificial Intelligence (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)
  • Image Input (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

1388131 Optical character reader ZELLWEGER USTER Ltd 16 March 1972 [22 March 1971] 12335/72 Heading G4M In an optical character reader of the kind where characters are optically scanned, the character being located within a predetermined depth of focus region T defined by a reference plane 6 and two outer planes 6<SP>1</SP> and 6<SP>11</SP>, and the reflected light is passed through a collecting lens 20 to a photo-cell 23, a diaphragm 26 is provided at the focal plane of the collecting lens, the diaphragm having an aperture 27 of a size such that the flux of the light beam reaching the photo-cell is independent of the position of the scanned character within the depth of focus region. Light from, e.g. a helium gas laser, is passed via a lens and mirror system to a rotating mirror scanner. The resulting scanning beam 11<SP>111</SP> is passed via a cylinder lens 17 to a gap between two conveyers (represented by rollers 2B, 2D), across which articles bearing characters are transported. The characters may be in the form of concentric circles or bars. The diaphragm compensates for variations in position of the characters within the depth of focus region by intercepting excess light.
GB1233572A 1971-03-22 1972-03-16 Reader mechanism Expired GB1388131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH424171A CH537057A (en) 1971-03-22 1971-03-22 Reading device for optically recognizable characters

Publications (1)

Publication Number Publication Date
GB1388131A true GB1388131A (en) 1975-03-26

Family

ID=4272428

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1233572A Expired GB1388131A (en) 1971-03-22 1972-03-16 Reader mechanism

Country Status (10)

Country Link
US (1) US3758783A (en)
BE (1) BE780725A (en)
CA (1) CA956033A (en)
CH (1) CH537057A (en)
DE (1) DE2200093C3 (en)
FR (1) FR2131405A5 (en)
GB (1) GB1388131A (en)
NL (1) NL7200754A (en)
SE (1) SE389934B (en)
ZA (1) ZA721585B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246653A (en) * 1990-08-03 1992-02-05 Symbol Technologies Inc Light emitting diode scanner
US5268564A (en) * 1990-08-03 1993-12-07 Symbol Technologies, Inc. Bar code scanner actuated by detection of scanner motion

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025761A (en) * 1975-04-16 1977-05-24 Schiller Industries, Inc. Optical system for code symbol scanners
US4034230A (en) * 1975-10-24 1977-07-05 Bulova Watch Company, Inc. Electro-optical bar-code scanning unit
US4064390A (en) * 1976-04-19 1977-12-20 Spectra-Physics, Inc. Method and apparatus for reading coded labels
US4745631A (en) * 1982-12-27 1988-05-17 North American Philips Corp. Flying spot generator
US4603262A (en) * 1983-08-22 1986-07-29 Optel Systems Inc. Optical device for detecting coded symbols
US4692603A (en) * 1985-04-01 1987-09-08 Cauzin Systems, Incorporated Optical reader for printed bit-encoded data and method of reading same
WO1987006016A1 (en) * 1986-04-04 1987-10-08 Eastman Kodak Company Scanning apparatus
US5027424A (en) * 1986-08-29 1991-06-25 Asahi Kogaku Kogyo K.K. Image reader

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976361A (en) * 1956-04-12 1961-03-21 Faximile Inc Continuous scanner with warped mirror
US3443072A (en) * 1964-12-10 1969-05-06 Abex Corp Object identification systems
GB1280678A (en) * 1968-06-27 1972-07-05 Rca Corp Article designator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2246653A (en) * 1990-08-03 1992-02-05 Symbol Technologies Inc Light emitting diode scanner
US5268564A (en) * 1990-08-03 1993-12-07 Symbol Technologies, Inc. Bar code scanner actuated by detection of scanner motion
GB2246653B (en) * 1990-08-03 1995-02-15 Symbol Technologies Inc Method of operating a bar code scanner

Also Published As

Publication number Publication date
BE780725A (en) 1972-07-03
US3758783A (en) 1973-09-11
DE2200093A1 (en) 1972-10-05
FR2131405A5 (en) 1972-11-10
DE2200093C3 (en) 1978-06-29
SE389934B (en) 1976-11-22
CH537057A (en) 1973-05-15
DE2200093B2 (en) 1977-11-10
ZA721585B (en) 1972-11-29
NL7200754A (en) 1972-09-26
CA956033A (en) 1974-10-08

Similar Documents

Publication Publication Date Title
GB1437346A (en) Optical scanning arrangement
US3729248A (en) Optical scanning assembly with helical-shaped rotating reflector
GB1198655A (en) Entrant Beam Optical Scanner.
GB1431059A (en) Light beam scanning system
SE8201306L (en) OPTICAL SWEEPING DEVICE
GB1449246A (en) Contrast image systems
GB1388134A (en) Scanner apparatus for optically discernible characters
GB1388131A (en) Reader mechanism
JPS56164312A (en) Optical deflecting device
GB1324323A (en) Automatic focusing of an optical image
US3612702A (en) Web defect determination by laser beam irradiation and reflected light examination
GB1185839A (en) Improvements in or relating to Devices for Optically Scanning Microscopic Objects
GB1206668A (en) Optical contour tracing arrangement
GB2000321A (en) Optical scanner and system for laser beam exposure of photo surfaces
GB1439226A (en) Optical scanning arrangement
JPS5927671A (en) Illumination system
ES8302321A1 (en) Optical system.
GB1388133A (en) Read mechanism for optically disernible characters
GB1345817A (en) Device for scanning or reproduction of images
GB1263563A (en) Optical measuring apparatus
US3035179A (en) Condenser optical systems for flying spot scanners
US3497298A (en) Optical scanning method for copying machines
JPS5722218A (en) Scanning optical system using plural beams
GB1286565A (en) Optical device for space exploration
GB1388132A (en) Correction apparatus for optical reading mechanism

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee