GB982102A - Optical reader device - Google Patents

Optical reader device

Info

Publication number
GB982102A
GB982102A GB4688962A GB4688962A GB982102A GB 982102 A GB982102 A GB 982102A GB 4688962 A GB4688962 A GB 4688962A GB 4688962 A GB4688962 A GB 4688962A GB 982102 A GB982102 A GB 982102A
Authority
GB
United Kingdom
Prior art keywords
diode
semi
conductor
gold
zinc
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
GB4688962A
Inventor
Ronald Francis Johnston Broom
Cyril Hilsum
Donald Bayley
John Dennis Ralphs
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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
Priority to NL301609D priority Critical patent/NL301609A/xx
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB4688962A priority patent/GB982102A/en
Priority to FR956851A priority patent/FR1391787A/en
Priority to DE1963N0024147 priority patent/DE1255361B/en
Publication of GB982102A publication Critical patent/GB982102A/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
    • G06K7/10841—Particularities of the light-sensitive elements

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)
  • Led Device Packages (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A semi-conductor diode lamp is formed of gallium arsenide, or indium phosphide or an alloy of both or an alloy of gallium phosphide or gallium arsenide, zinc being diffused into the surface of the semi-conductor to form a PN junction. The diode may be constructed from a slice of semi-conductor having a gold-plated molybdenum stud alloyed to the zinc-doped surface, this surface being etched away around the stud. The other electrode may be a gold-plated molybdenum disc having an aperture over which the diode is mounted. The diode emits infra-red radiation when energized.
GB4688962A 1962-12-12 1962-12-12 Optical reader device Expired GB982102A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL301609D NL301609A (en) 1962-12-12
GB4688962A GB982102A (en) 1962-12-12 1962-12-12 Optical reader device
FR956851A FR1391787A (en) 1962-12-12 1963-12-11 Optical drive
DE1963N0024147 DE1255361B (en) 1962-12-12 1963-12-12 Optical scanning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4688962A GB982102A (en) 1962-12-12 1962-12-12 Optical reader device
GB2827663 1963-07-17

Publications (1)

Publication Number Publication Date
GB982102A true GB982102A (en) 1965-02-03

Family

ID=42735539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4688962A Expired GB982102A (en) 1962-12-12 1962-12-12 Optical reader device

Country Status (4)

Country Link
DE (1) DE1255361B (en)
FR (1) FR1391787A (en)
GB (1) GB982102A (en)
NL (1) NL301609A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132131A (en) * 1978-04-05 1979-10-13 Sumitomo Electric Ind Ltd Optical information reading device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382251A (en) * 1943-08-25 1945-08-14 Bell Telephone Labor Inc Telegraph perforator-transmitter
NL163640B (en) * 1950-08-30 Amp Inc ELECTRIC PRESSURE SWITCH.
US2873441A (en) * 1955-02-18 1959-02-10 Librascope Inc Converter
DE1048943B (en) * 1956-06-12 1959-01-22 Willy Salchow Device for converting impulse combinations into motion quantities

Also Published As

Publication number Publication date
FR1391787A (en) 1965-03-12
DE1255361B (en) 1967-11-30
NL301609A (en)

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