JPS57211670A - Optical mark reader - Google Patents

Optical mark reader

Info

Publication number
JPS57211670A
JPS57211670A JP9796881A JP9796881A JPS57211670A JP S57211670 A JPS57211670 A JP S57211670A JP 9796881 A JP9796881 A JP 9796881A JP 9796881 A JP9796881 A JP 9796881A JP S57211670 A JPS57211670 A JP S57211670A
Authority
JP
Japan
Prior art keywords
reflected
scanning
pattern
generate
plane mirror
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.)
Pending
Application number
JP9796881A
Other languages
Japanese (ja)
Inventor
Kazuhisa Shirokabe
Hiroyuki Miyazaki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9796881A priority Critical patent/JPS57211670A/en
Publication of JPS57211670A publication Critical patent/JPS57211670A/en
Pending 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)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To obtain an efficient optical scanner, by combining in parallel pattern group and two kinds X-shaped pattern groups different in cross angle to obtain a scanning pattern while using a hologram disc for forming this pattern. CONSTITUTION:Scanning lines 33 and 34 reflected by a plane mirror 30 generate two parallel patterns 37 on a scanning face 36, and scanning line groups 33-35 reflected by a plane mirror 31 generate X-shaped patterns 38 on the scanning face 36, and scanning line groups 33-35 reflected by a plane mirror 32 generate X-shaped patterns 39 having cross angles acuter than that of X-shaped patterns 38. Information of the reflected light from the scanning face 36 is reflected by plane mirrors 30-32 and is made incident to holograms 27-29. Reflected lights from them are condensed to a pin hole 10 through a perforated mirror 25 by holograms. The condensed light is converted to an electric signal by a photoelectric detector 41 and is read by a signal processing circuit.
JP9796881A 1981-06-23 1981-06-23 Optical mark reader Pending JPS57211670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9796881A JPS57211670A (en) 1981-06-23 1981-06-23 Optical mark reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9796881A JPS57211670A (en) 1981-06-23 1981-06-23 Optical mark reader

Publications (1)

Publication Number Publication Date
JPS57211670A true JPS57211670A (en) 1982-12-25

Family

ID=14206461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9796881A Pending JPS57211670A (en) 1981-06-23 1981-06-23 Optical mark reader

Country Status (1)

Country Link
JP (1) JPS57211670A (en)

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