GB983680A - Overcoming light leakage in optical sensing - Google Patents

Overcoming light leakage in optical sensing

Info

Publication number
GB983680A
GB983680A GB28151/63A GB2815163A GB983680A GB 983680 A GB983680 A GB 983680A GB 28151/63 A GB28151/63 A GB 28151/63A GB 2815163 A GB2815163 A GB 2815163A GB 983680 A GB983680 A GB 983680A
Authority
GB
United Kingdom
Prior art keywords
record
cell
light
perforated
july
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
GB28151/63A
Other languages
English (en)
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.)
Unisys Corp
Original Assignee
Sperry Rand Corp
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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB983680A publication Critical patent/GB983680A/en
Expired 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)
  • 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)
  • Optical Recording Or Reproduction (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
GB28151/63A 1962-07-27 1963-07-16 Overcoming light leakage in optical sensing Expired GB983680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US212936A US3253128A (en) 1962-07-27 1962-07-27 Overcoming light leakage in optical sensing

Publications (1)

Publication Number Publication Date
GB983680A true GB983680A (en) 1965-02-17

Family

ID=22793025

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28151/63A Expired GB983680A (en) 1962-07-27 1963-07-16 Overcoming light leakage in optical sensing

Country Status (5)

Country Link
US (1) US3253128A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH414226A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR1361843A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB983680A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL295016A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476918A (en) * 1963-06-21 1969-11-04 Gen Electric Card and tape reader
GB1122341A (en) * 1965-11-30 1968-08-07 Ferranti Ltd Improvements relating to apparatus for reading punched tape
US3441742A (en) * 1967-03-23 1969-04-29 Chalco Eng Corp Housing and rack for readout apparatus using strip photocells
US3560751A (en) * 1969-02-07 1971-02-02 Ibm Optical mark sensing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT595886A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1957-10-11

Also Published As

Publication number Publication date
US3253128A (en) 1966-05-24
CH414226A (de) 1966-05-31
NL295016A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR1361843A (fr) 1964-05-22

Similar Documents

Publication Publication Date Title
US3533657A (en) Reading-selecting device for the optical reading of perforations in or marks on recording media
GB1331799A (en) Light defelctor
US3466451A (en) Photoelectric device for sensing indicia on a moving medium
ES434686A1 (es) Un aparato para leer un portador de registro en el que se haalmacenado informacion.
GB1013129A (en) Specimen identification apparatus
US3443109A (en) Electro-optical reading device utilizing a pulsed semiconductor diode lamp
GB983680A (en) Overcoming light leakage in optical sensing
SE8302295L (sv) Kombinerad tryck- och lesanordning
US3714447A (en) Apparatus for the photo-optical reading of marks and perforations on record media
US2939016A (en) Detecting apparatus
GB1282698A (en) Apparatus for identifying or writing magnetically recorded data
US3432676A (en) Housing for light sensitive devices comprising light - conducting tubes in transparent plastic support block
GB1332142A (en) Electro-magnetic printing device
US3549867A (en) Record reader having transparency threshold means
US3476918A (en) Card and tape reader
GB1057438A (en) Multiple aperture optical reader
US2346496A (en) Film sound recording system
US3351765A (en) Photosensitive read-out device for apertured records
US3569675A (en) Apparatus for reading marks on or perforations in record cards
GB1053424A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB1199464A (en) A Head for Reading a Perforated Record Medium.
GB1091742A (en) Optical encoder
GB1366152A (en) Optical reader for punched cards
US3118129A (en) Character recognition devices
GB1515628A (en) Optical readers