JPH02118508A - 光ディスク用レンズ - Google Patents

光ディスク用レンズ

Info

Publication number
JPH02118508A
JPH02118508A JP1112514A JP11251489A JPH02118508A JP H02118508 A JPH02118508 A JP H02118508A JP 1112514 A JP1112514 A JP 1112514A JP 11251489 A JP11251489 A JP 11251489A JP H02118508 A JPH02118508 A JP H02118508A
Authority
JP
Japan
Prior art keywords
lens
semiconductor laser
disk
aspherical
power
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
JP1112514A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0429048B2 (enrdf_load_stackoverflow
Inventor
Yoji Kubota
洋治 久保田
Toshiyuki Inoue
井上　利幸
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 JP1112514A priority Critical patent/JPH02118508A/ja
Publication of JPH02118508A publication Critical patent/JPH02118508A/ja
Publication of JPH0429048B2 publication Critical patent/JPH0429048B2/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)
  • Optical Head (AREA)
JP1112514A 1989-05-01 1989-05-01 光ディスク用レンズ Granted JPH02118508A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1112514A JPH02118508A (ja) 1989-05-01 1989-05-01 光ディスク用レンズ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1112514A JPH02118508A (ja) 1989-05-01 1989-05-01 光ディスク用レンズ

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP24028084A Division JPS61118708A (ja) 1984-11-14 1984-11-14 光デイスク用レンズ

Publications (2)

Publication Number Publication Date
JPH02118508A true JPH02118508A (ja) 1990-05-02
JPH0429048B2 JPH0429048B2 (enrdf_load_stackoverflow) 1992-05-15

Family

ID=14588556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1112514A Granted JPH02118508A (ja) 1989-05-01 1989-05-01 光ディスク用レンズ

Country Status (1)

Country Link
JP (1) JPH02118508A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6639889B1 (en) 1997-02-13 2003-10-28 Samsung Electronics Co., Ltd. Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats
US6788636B2 (en) 1997-03-28 2004-09-07 Samsung Electronics Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
US6791933B1 (en) 1996-08-29 2004-09-14 Samsung Electronics Co., Ltd. Optical pickup using an optical phase plate
US6882614B2 (en) 1996-02-14 2005-04-19 Samsung Electronics Co., Ltd. Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses
US7372794B2 (en) 2002-06-05 2008-05-13 Samsung Electronics Co., Ltd. Compatible optical pickup applying tilt to objective lens in proportion to radial movement of objective lens

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61190054U (enrdf_load_stackoverflow) * 1985-05-20 1986-11-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61190054U (enrdf_load_stackoverflow) * 1985-05-20 1986-11-27

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6882614B2 (en) 1996-02-14 2005-04-19 Samsung Electronics Co., Ltd. Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses
US8503272B2 (en) 1996-02-14 2013-08-06 Samsung Electronics Co., Ltd. Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses
US8848502B2 (en) 1996-02-14 2014-09-30 Samsung Electronics Co., Ltd. Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses
US6791933B1 (en) 1996-08-29 2004-09-14 Samsung Electronics Co., Ltd. Optical pickup using an optical phase plate
US7072114B2 (en) 1996-08-29 2006-07-04 Samsung Electronics Co., Ltd. Optical pickup using an optical phase plate and which is compatible with optical recording media of different types
US6639889B1 (en) 1997-02-13 2003-10-28 Samsung Electronics Co., Ltd. Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats
US6788636B2 (en) 1997-03-28 2004-09-07 Samsung Electronics Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
US6816449B2 (en) 1997-03-28 2004-11-09 Samsung Electronic Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
US7046611B2 (en) 1997-03-28 2006-05-16 Samsung Electronics Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
USRE43106E1 (en) 1997-03-28 2012-01-17 Samsung Electronics Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
US7372794B2 (en) 2002-06-05 2008-05-13 Samsung Electronics Co., Ltd. Compatible optical pickup applying tilt to objective lens in proportion to radial movement of objective lens

Also Published As

Publication number Publication date
JPH0429048B2 (enrdf_load_stackoverflow) 1992-05-15

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees