JPH0210402B2 - - Google Patents

Info

Publication number
JPH0210402B2
JPH0210402B2 JP1430383A JP1430383A JPH0210402B2 JP H0210402 B2 JPH0210402 B2 JP H0210402B2 JP 1430383 A JP1430383 A JP 1430383A JP 1430383 A JP1430383 A JP 1430383A JP H0210402 B2 JPH0210402 B2 JP H0210402B2
Authority
JP
Japan
Prior art keywords
lens
group
focal length
disk
aberration
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
Application number
JP1430383A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59140414A (ja
Inventor
Takahiro Sugyama
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP1430383A priority Critical patent/JPS59140414A/ja
Publication of JPS59140414A publication Critical patent/JPS59140414A/ja
Publication of JPH0210402B2 publication Critical patent/JPH0210402B2/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
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • 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
    • 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
    • G11B7/1372—Lenses
    • G11B7/1374—Objective lenses
    • 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
    • G11B7/1392—Means for controlling the beam wavefront, e.g. for correction of aberration
    • G11B7/13922—Means for controlling the beam wavefront, e.g. for correction of aberration passive
    • 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
    • G11B7/1372—Lenses
    • G11B2007/13727—Compound lenses, i.e. two or more lenses co-operating to perform a function, e.g. compound objective lens including a solid immersion lens, positive and negative lenses either bonded together or with adjustable spacing

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Lenses (AREA)
JP1430383A 1983-01-31 1983-01-31 光デイスク用対物レンズ Granted JPS59140414A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1430383A JPS59140414A (ja) 1983-01-31 1983-01-31 光デイスク用対物レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1430383A JPS59140414A (ja) 1983-01-31 1983-01-31 光デイスク用対物レンズ

Publications (2)

Publication Number Publication Date
JPS59140414A JPS59140414A (ja) 1984-08-11
JPH0210402B2 true JPH0210402B2 (fr) 1990-03-08

Family

ID=11857327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1430383A Granted JPS59140414A (ja) 1983-01-31 1983-01-31 光デイスク用対物レンズ

Country Status (1)

Country Link
JP (1) JPS59140414A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07119889B2 (ja) * 1985-09-20 1995-12-20 コニカ株式会社 光情報記録媒体の記録・再生光学系用集光光学系
JPH01262445A (ja) * 1988-04-13 1989-10-19 Toshiba Corp 表面検査装置
JP3932578B2 (ja) * 1996-10-24 2007-06-20 ソニー株式会社 対物レンズ及び光学ピックアップ装置
JP4506081B2 (ja) * 2003-02-06 2010-07-21 コニカミノルタホールディングス株式会社 光ピックアップ装置

Also Published As

Publication number Publication date
JPS59140414A (ja) 1984-08-11

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