JPS56119945A - Light beam scanner - Google Patents

Light beam scanner

Info

Publication number
JPS56119945A
JPS56119945A JP2259280A JP2259280A JPS56119945A JP S56119945 A JPS56119945 A JP S56119945A JP 2259280 A JP2259280 A JP 2259280A JP 2259280 A JP2259280 A JP 2259280A JP S56119945 A JPS56119945 A JP S56119945A
Authority
JP
Japan
Prior art keywords
semiconductor laser
optical disc
face
light radiation
disc
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
JP2259280A
Other languages
Japanese (ja)
Inventor
Michiharu Abe
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2259280A priority Critical patent/JPS56119945A/en
Publication of JPS56119945A publication Critical patent/JPS56119945A/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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers

Landscapes

  • Optical Head (AREA)

Abstract

PURPOSE:To reduce size and weight by holding a semiconductor laser in a manner as to face the surface of an optical disc which is rotatably supported and approaching the laser light radiation end face of this semiconductor laser to the surface of the optical disc. CONSTITUTION:An optical disc 10 is placed on a transparent or translucent turntable 11, whilist a semiconductor laser 14 is mounted to an arm opposedly to the surface of the disc 10. If the laser light radiation end face 14a of the semiconductor laser 14 and the information recording surface of the optical disc 10 are made approached and the spacing therebetween is held at <=1mum for example, the information is read at the same degree as that of conventional resolving power. In this case, there is no need at all for the conventional optical system consisting of lenses and mirrors and therefore, the apparatus is correspondingly simplified and is produced inexpensively.
JP2259280A 1980-02-25 1980-02-25 Light beam scanner Pending JPS56119945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2259280A JPS56119945A (en) 1980-02-25 1980-02-25 Light beam scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2259280A JPS56119945A (en) 1980-02-25 1980-02-25 Light beam scanner

Publications (1)

Publication Number Publication Date
JPS56119945A true JPS56119945A (en) 1981-09-19

Family

ID=12087109

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2259280A Pending JPS56119945A (en) 1980-02-25 1980-02-25 Light beam scanner

Country Status (1)

Country Link
JP (1) JPS56119945A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4888951A (en) * 1972-02-23 1973-11-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4888951A (en) * 1972-02-23 1973-11-21

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