JPS5444552A - Information reader - Google Patents

Information reader

Info

Publication number
JPS5444552A
JPS5444552A JP11095677A JP11095677A JPS5444552A JP S5444552 A JPS5444552 A JP S5444552A JP 11095677 A JP11095677 A JP 11095677A JP 11095677 A JP11095677 A JP 11095677A JP S5444552 A JPS5444552 A JP S5444552A
Authority
JP
Japan
Prior art keywords
scanning
holograms
plural
condensing
elements
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.)
Granted
Application number
JP11095677A
Other languages
Japanese (ja)
Other versions
JPS613410B2 (en
Inventor
Hiroyuki Ikeda
Yushi Inagaki
Moritoshi Ando
Seikichi Matsumoto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP11095677A priority Critical patent/JPS5444552A/en
Publication of JPS5444552A publication Critical patent/JPS5444552A/en
Publication of JPS613410B2 publication Critical patent/JPS613410B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE: To detect reflected light with separate photo detectors and enable information processing be performed parallel by providing plural condensing elements for plural scanning elements and radiating a light beam to plural scanning elements and radiating a light beam to plural sets of scanning patterns.
CONSTITUTION: Laser light 4 is radiated to the A, B in the scanning holograms 11 of a rotating disc 1 and 2 scanning patterns 81, 82 are so generated in a read window 7 that they do not spacially intersect. To detect the reflected light from an information carrier by said scanning patterns 81, 82, the condensing holograms A', B' which move in synchronization with the scanning holograms A, B and have a focus in the same position are provided on the same disc 1 and the beams are condensed on photo detectors 91, 92 respectively through said condensing holograms A, B' to be detected, whereby the separate reflection signals are obtained simultaneously. Thereby, parallel processing of read operation is made possible and reading may be made higher in speed.
COPYRIGHT: (C)1979,JPO&Japio
JP11095677A 1977-09-14 1977-09-14 Information reader Granted JPS5444552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11095677A JPS5444552A (en) 1977-09-14 1977-09-14 Information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11095677A JPS5444552A (en) 1977-09-14 1977-09-14 Information reader

Publications (2)

Publication Number Publication Date
JPS5444552A true JPS5444552A (en) 1979-04-09
JPS613410B2 JPS613410B2 (en) 1986-02-01

Family

ID=14548783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11095677A Granted JPS5444552A (en) 1977-09-14 1977-09-14 Information reader

Country Status (1)

Country Link
JP (1) JPS5444552A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5687013A (en) * 1979-12-17 1981-07-15 Ricoh Co Ltd Original reading method
JPS57147003A (en) * 1981-03-06 1982-09-10 Nec Corp Optical phase information reader
JPS58113909A (en) * 1981-12-26 1983-07-07 Mitsubishi Electric Corp Optical scanner
JPS5925559U (en) * 1982-08-10 1984-02-17 日本電気株式会社 optical reader
JPS60178587A (en) * 1984-02-13 1985-09-12 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン Optical scanner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5687013A (en) * 1979-12-17 1981-07-15 Ricoh Co Ltd Original reading method
JPS57147003A (en) * 1981-03-06 1982-09-10 Nec Corp Optical phase information reader
JPH0131123B2 (en) * 1981-03-06 1989-06-23 Nippon Electric Co
JPS58113909A (en) * 1981-12-26 1983-07-07 Mitsubishi Electric Corp Optical scanner
JPS5925559U (en) * 1982-08-10 1984-02-17 日本電気株式会社 optical reader
JPH0350488Y2 (en) * 1982-08-10 1991-10-29
JPS60178587A (en) * 1984-02-13 1985-09-12 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン Optical scanner
JPH0132550B2 (en) * 1984-02-13 1989-07-05 Intaanashonaru Bijinesu Mashiinzu Corp

Also Published As

Publication number Publication date
JPS613410B2 (en) 1986-02-01

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