JPS56129976A - Optical code reader - Google Patents

Optical code reader

Info

Publication number
JPS56129976A
JPS56129976A JP3314480A JP3314480A JPS56129976A JP S56129976 A JPS56129976 A JP S56129976A JP 3314480 A JP3314480 A JP 3314480A JP 3314480 A JP3314480 A JP 3314480A JP S56129976 A JPS56129976 A JP S56129976A
Authority
JP
Japan
Prior art keywords
laser beam
passing
carrier
bar code
shield
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
JP3314480A
Other languages
Japanese (ja)
Inventor
Shiro Hayano
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.)
Daifuku Co Ltd
Daifuku Machinery Works Ltd
Original Assignee
Daifuku Co Ltd
Daifuku Machinery Works 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 Daifuku Co Ltd, Daifuku Machinery Works Ltd filed Critical Daifuku Co Ltd
Priority to JP3314480A priority Critical patent/JPS56129976A/en
Publication of JPS56129976A publication Critical patent/JPS56129976A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms

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)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To enable to solve the problem on environmental hygiene like direct radiation of laser beam to the eyes of workers, by avoiding the laser beam from being radiated, through the provision of shield means controlling the passing and interruption of laser beam. CONSTITUTION:The bar code read-in operation start is indicated for the code detection circuit 11 with the carrier detector 14, when the carrier closes to the scanner, and the bar code read-in operation is ended when it passes over. The shield plate 15 provided along the projection path of laser beam (a) is located by shielding the laser beam (a) like virtual lines normally, and the shield plate drive device 16 turns the shield plate 15 as solid lines, when the carrier detector 14 produces an output to pass through the laser beam (a). Thus, the laser beam (a) is controlled for the passing and shield in interlocking with the end instruction and bar code read-in operation start instruction, and it is not radiated other than passing of carrier on the scanner front surface.
JP3314480A 1980-03-14 1980-03-14 Optical code reader Pending JPS56129976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3314480A JPS56129976A (en) 1980-03-14 1980-03-14 Optical code reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3314480A JPS56129976A (en) 1980-03-14 1980-03-14 Optical code reader

Publications (1)

Publication Number Publication Date
JPS56129976A true JPS56129976A (en) 1981-10-12

Family

ID=12378386

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3314480A Pending JPS56129976A (en) 1980-03-14 1980-03-14 Optical code reader

Country Status (1)

Country Link
JP (1) JPS56129976A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6123264A (en) * 1994-06-30 2000-09-26 Symbol Technologies, Inc. Apparatus and method for determining a distance to a target
US6708883B2 (en) 1994-06-30 2004-03-23 Symbol Technologies, Inc. Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119655A (en) * 1974-03-04 1975-09-19
JPS5279731A (en) * 1975-12-26 1977-07-05 Omron Tateisi Electronics Co Optical reader
JPS52133719A (en) * 1976-04-30 1977-11-09 Nippon Denso Co Ltd Information reader for mov ing object

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119655A (en) * 1974-03-04 1975-09-19
JPS5279731A (en) * 1975-12-26 1977-07-05 Omron Tateisi Electronics Co Optical reader
JPS52133719A (en) * 1976-04-30 1977-11-09 Nippon Denso Co Ltd Information reader for mov ing object

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6123264A (en) * 1994-06-30 2000-09-26 Symbol Technologies, Inc. Apparatus and method for determining a distance to a target
US6398112B1 (en) 1994-06-30 2002-06-04 Symbol Technologies, Inc. Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology
US6708883B2 (en) 1994-06-30 2004-03-23 Symbol Technologies, Inc. Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology

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