JPS5915913A - 光学式高密度記録再生装置の対物レンズ - Google Patents

光学式高密度記録再生装置の対物レンズ

Info

Publication number
JPS5915913A
JPS5915913A JP12506582A JP12506582A JPS5915913A JP S5915913 A JPS5915913 A JP S5915913A JP 12506582 A JP12506582 A JP 12506582A JP 12506582 A JP12506582 A JP 12506582A JP S5915913 A JPS5915913 A JP S5915913A
Authority
JP
Japan
Prior art keywords
lens
light source
curvature
inequality
source side
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
JP12506582A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0215044B2 (enrdf_load_stackoverflow
Inventor
Yoji Kubota
洋治 久保田
Hidetoshi Hadama
葉玉　秀俊
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.)
Nidec Instruments Corp
Original Assignee
Sankyo Seiki Manufacturing 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 Sankyo Seiki Manufacturing Co Ltd filed Critical Sankyo Seiki Manufacturing Co Ltd
Priority to JP12506582A priority Critical patent/JPS5915913A/ja
Publication of JPS5915913A publication Critical patent/JPS5915913A/ja
Publication of JPH0215044B2 publication Critical patent/JPH0215044B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
JP12506582A 1982-07-20 1982-07-20 光学式高密度記録再生装置の対物レンズ Granted JPS5915913A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12506582A JPS5915913A (ja) 1982-07-20 1982-07-20 光学式高密度記録再生装置の対物レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12506582A JPS5915913A (ja) 1982-07-20 1982-07-20 光学式高密度記録再生装置の対物レンズ

Publications (2)

Publication Number Publication Date
JPS5915913A true JPS5915913A (ja) 1984-01-27
JPH0215044B2 JPH0215044B2 (enrdf_load_stackoverflow) 1990-04-10

Family

ID=14900946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12506582A Granted JPS5915913A (ja) 1982-07-20 1982-07-20 光学式高密度記録再生装置の対物レンズ

Country Status (1)

Country Link
JP (1) JPS5915913A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04219627A (ja) * 1990-04-20 1992-08-10 Matsushita Electric Ind Co Ltd 光ディスク
USRE37185E1 (en) 1990-04-20 2001-05-22 Matsushita Electric Industrial Co., Ltd. Optical head
JP2003084196A (ja) * 2001-07-04 2003-03-19 Konica Corp 対物レンズ、光ピックアップ装置及び記録・再生装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192415A (en) * 1981-05-22 1982-11-26 Matsushita Electric Works Ltd Improvement of solvent resistance of thermoplastic resin

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192415A (en) * 1981-05-22 1982-11-26 Matsushita Electric Works Ltd Improvement of solvent resistance of thermoplastic resin

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04219627A (ja) * 1990-04-20 1992-08-10 Matsushita Electric Ind Co Ltd 光ディスク
USRE37185E1 (en) 1990-04-20 2001-05-22 Matsushita Electric Industrial Co., Ltd. Optical head
JP2003084196A (ja) * 2001-07-04 2003-03-19 Konica Corp 対物レンズ、光ピックアップ装置及び記録・再生装置

Also Published As

Publication number Publication date
JPH0215044B2 (enrdf_load_stackoverflow) 1990-04-10

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