JPS56101654A - Information reader - Google Patents

Information reader

Info

Publication number
JPS56101654A
JPS56101654A JP425580A JP425580A JPS56101654A JP S56101654 A JPS56101654 A JP S56101654A JP 425580 A JP425580 A JP 425580A JP 425580 A JP425580 A JP 425580A JP S56101654 A JPS56101654 A JP S56101654A
Authority
JP
Japan
Prior art keywords
disk
information
array
constitution
patterns
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
JP425580A
Other languages
Japanese (ja)
Inventor
Ikuyuki Miyazawa
Takahiro Kubo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP425580A priority Critical patent/JPS56101654A/en
Publication of JPS56101654A publication Critical patent/JPS56101654A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To increase the volume of memory information with simple constitution by optically reading recording information on a disk. CONSTITUTION:On the surface of transparent disk 1, information patterns 2 formed of substances differing in light transmissivity and drawn concentrically to form tracks 3-1, 3-2,.... Disk 1 is rotated by motor 4 and irradiated with light source 5 from its reverse surface. Transmitted light of disk 1 is focused by lens 6 and images of respective patterns 2 are formed on array 7 consisting of plural photodetectors 7-1, 7-2,... provided in the diameter direction of disk 1. The photodetection surface of array 7 and the surface of disk 1 conjugate and information on each track is read independently by the corresponding detector and outputted via switch 8.
JP425580A 1980-01-18 1980-01-18 Information reader Pending JPS56101654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP425580A JPS56101654A (en) 1980-01-18 1980-01-18 Information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP425580A JPS56101654A (en) 1980-01-18 1980-01-18 Information reader

Publications (1)

Publication Number Publication Date
JPS56101654A true JPS56101654A (en) 1981-08-14

Family

ID=11579423

Family Applications (1)

Application Number Title Priority Date Filing Date
JP425580A Pending JPS56101654A (en) 1980-01-18 1980-01-18 Information reader

Country Status (1)

Country Link
JP (1) JPS56101654A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60163237A (en) * 1984-02-06 1985-08-26 Asahi Optical Co Ltd Optical information reproducing device
JPS60173724A (en) * 1984-02-18 1985-09-07 Asahi Optical Co Ltd Optical information reproducing device
JPS61168140A (en) * 1985-01-22 1986-07-29 Soron Kk Reader for laser card

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960505A (en) * 1972-10-09 1974-06-12
JPS5119728A (en) * 1974-07-19 1976-02-17 Shinetsu Chemical Co Aminokishikio jusuru jukikeisokagobutsuno seizohoho

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960505A (en) * 1972-10-09 1974-06-12
JPS5119728A (en) * 1974-07-19 1976-02-17 Shinetsu Chemical Co Aminokishikio jusuru jukikeisokagobutsuno seizohoho

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60163237A (en) * 1984-02-06 1985-08-26 Asahi Optical Co Ltd Optical information reproducing device
JPS60173724A (en) * 1984-02-18 1985-09-07 Asahi Optical Co Ltd Optical information reproducing device
JPS61168140A (en) * 1985-01-22 1986-07-29 Soron Kk Reader for laser card

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