JPS56159848A - Optical recording and reproducing device - Google Patents

Optical recording and reproducing device

Info

Publication number
JPS56159848A
JPS56159848A JP6457280A JP6457280A JPS56159848A JP S56159848 A JPS56159848 A JP S56159848A JP 6457280 A JP6457280 A JP 6457280A JP 6457280 A JP6457280 A JP 6457280A JP S56159848 A JPS56159848 A JP S56159848A
Authority
JP
Japan
Prior art keywords
mirror
light
recording medium
total reflection
reflected
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
JP6457280A
Other languages
Japanese (ja)
Other versions
JPS6130328B2 (en
Inventor
Masahiro Orukawa
Hideji Kawabata
Akira Muto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6457280A priority Critical patent/JPS56159848A/en
Publication of JPS56159848A publication Critical patent/JPS56159848A/en
Publication of JPS6130328B2 publication Critical patent/JPS6130328B2/ja
Granted 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To improve the light transmission efficiency, to make the light source small-sized, and to increase a reproduction signal, by making a light beam from the light source project and reflect on the recording medium by a mirror having two total reflection surfaces. CONSTITUTION:A light beam from the linearly polarized laser beam source 1 is projected on the mirror 2 at 50 deg. incident angle. As for the mirror 2, one side 6 of the triangle pole and the other side 7 are both of the total reflection surface. And, the reflected ray on the surface 6 forms a focus on the surface of a recording medium 4 through a condensing lens 3. On the other hand, the reflected ray on the medium 4 is separated from the incident light axis, is reflected on the surface 7, attains to a photodetecting part 5, and the photodetection is executed.
JP6457280A 1980-05-14 1980-05-14 Optical recording and reproducing device Granted JPS56159848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6457280A JPS56159848A (en) 1980-05-14 1980-05-14 Optical recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6457280A JPS56159848A (en) 1980-05-14 1980-05-14 Optical recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS56159848A true JPS56159848A (en) 1981-12-09
JPS6130328B2 JPS6130328B2 (en) 1986-07-12

Family

ID=13262066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6457280A Granted JPS56159848A (en) 1980-05-14 1980-05-14 Optical recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS56159848A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0207164A1 (en) * 1984-12-24 1987-01-07 Sony Corporation Apparatus for recording and reproducing optical recording card

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0207164A1 (en) * 1984-12-24 1987-01-07 Sony Corporation Apparatus for recording and reproducing optical recording card

Also Published As

Publication number Publication date
JPS6130328B2 (en) 1986-07-12

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