JPS527253A - Reader - Google Patents

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Publication number
JPS527253A
JPS527253A JP50083320A JP8332075A JPS527253A JP S527253 A JPS527253 A JP S527253A JP 50083320 A JP50083320 A JP 50083320A JP 8332075 A JP8332075 A JP 8332075A JP S527253 A JPS527253 A JP S527253A
Authority
JP
Japan
Prior art keywords
reader
rhat
tracks
focus
reflection
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
JP50083320A
Other languages
Japanese (ja)
Other versions
JPS586211B2 (en
Inventor
Hitoshi Kanamaru
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP50083320A priority Critical patent/JPS586211B2/en
Priority to DE2630381A priority patent/DE2630381C2/en
Priority to US05/703,021 priority patent/US4198657A/en
Publication of JPS527253A publication Critical patent/JPS527253A/en
Publication of JPS586211B2 publication Critical patent/JPS586211B2/en
Expired legal-status Critical Current

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Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: In case signals recorded on tracks of the circular disc are read optically, the angle of reflection and the position of a movable mirror are changed so rhat the substantial center of incident light may pass through the focus on the image side of a focusing lens.
COPYRIGHT: (C)1977,JPO&Japio
JP50083320A 1975-07-07 1975-07-07 Yomitori Sochi Expired JPS586211B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP50083320A JPS586211B2 (en) 1975-07-07 1975-07-07 Yomitori Sochi
DE2630381A DE2630381C2 (en) 1975-07-07 1976-07-06 Optical reader
US05/703,021 US4198657A (en) 1975-07-07 1976-07-06 Optical disk reader with means for correcting errors due to eccentricity and time axis variations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50083320A JPS586211B2 (en) 1975-07-07 1975-07-07 Yomitori Sochi

Publications (2)

Publication Number Publication Date
JPS527253A true JPS527253A (en) 1977-01-20
JPS586211B2 JPS586211B2 (en) 1983-02-03

Family

ID=13799123

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50083320A Expired JPS586211B2 (en) 1975-07-07 1975-07-07 Yomitori Sochi

Country Status (1)

Country Link
JP (1) JPS586211B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05119277A (en) * 1991-02-04 1993-05-18 Heidelberg Eng Opt Messsyst Gmbh Image focusing device for object body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05119277A (en) * 1991-02-04 1993-05-18 Heidelberg Eng Opt Messsyst Gmbh Image focusing device for object body
JP2525305B2 (en) * 1991-02-04 1996-08-21 ハイデルベルク・エンジニアリング・オプテイシエ・メスジステム・ゲーエムベーハー Target object imaging device

Also Published As

Publication number Publication date
JPS586211B2 (en) 1983-02-03

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