JPH0215044B2 - - Google Patents

Info

Publication number
JPH0215044B2
JPH0215044B2 JP57125065A JP12506582A JPH0215044B2 JP H0215044 B2 JPH0215044 B2 JP H0215044B2 JP 57125065 A JP57125065 A JP 57125065A JP 12506582 A JP12506582 A JP 12506582A JP H0215044 B2 JPH0215044 B2 JP H0215044B2
Authority
JP
Japan
Prior art keywords
lens
light source
curvature
source side
recording
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.)
Expired - Lifetime
Application number
JP57125065A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5915913A (ja
Inventor
Yoji Kubota
Hidetoshi Hadama
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 JPS5915913A (ja) 1984-01-27
JPH0215044B2 true 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE37185E1 (en) 1990-04-20 2001-05-22 Matsushita Electric Industrial Co., Ltd. Optical head
JP2616596B2 (ja) * 1990-04-20 1997-06-04 松下電器産業株式会社 光ディスク
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

Family Cites Families (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

Also Published As

Publication number Publication date
JPS5915913A (ja) 1984-01-27

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