[go: up one dir, main page]

WO2008117587A1 - Optical element for optical pickup device and optical pickup device - Google Patents

Optical element for optical pickup device and optical pickup device Download PDF

Info

Publication number
WO2008117587A1
WO2008117587A1 PCT/JP2008/052640 JP2008052640W WO2008117587A1 WO 2008117587 A1 WO2008117587 A1 WO 2008117587A1 JP 2008052640 W JP2008052640 W JP 2008052640W WO 2008117587 A1 WO2008117587 A1 WO 2008117587A1
Authority
WO
WIPO (PCT)
Prior art keywords
effective diameter
optical
region
pickup device
respect
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.)
Ceased
Application number
PCT/JP2008/052640
Other languages
French (fr)
Japanese (ja)
Inventor
Kiyono Ikenaka
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.)
Konica Minolta Opto Inc
Original Assignee
Konica Minolta Opto Inc
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 Konica Minolta Opto Inc filed Critical Konica Minolta Opto Inc
Priority to JP2009506241A priority Critical patent/JPWO2008117587A1/en
Publication of WO2008117587A1 publication Critical patent/WO2008117587A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Lenses (AREA)

Abstract

It is an object to provide an optical element for an optical pickup device in which two objective lenses are integrally formed to compatibly carry out recording and/or reproducing information for different discs. For that purpose, a first effective diameter outside region (EO1) is shaped to stretch toward the outside of the optical axis with respect to a configuration (shown in a dotted line) defined by extending a first effective diameter inside region (EI1) so as to make an intersecting angle obtuse with respect to a flange unit (FL), and a second effective diameter outside region (EO2) is shaped to pull into the inside of the optical axis with respect to a configuration (shown in a dotted line) defined by extending a second effective diameter inside region (EI2) so as to separate from a first objective lens (OL1). As a result, the formability of an optical element (OE) can be enhanced. Further, if at least one of the first effective diameter outside region (EO1) and the second effective diameter outside region (EO2) is provided with an optical path difference assigning structure, an under or over spherical aberration can be given to a passing light flux.
PCT/JP2008/052640 2007-03-28 2008-02-18 Optical element for optical pickup device and optical pickup device Ceased WO2008117587A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009506241A JPWO2008117587A1 (en) 2007-03-28 2008-02-18 Optical element for optical pickup device and optical pickup device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007083297 2007-03-28
JP2007-083297 2007-03-28

Publications (1)

Publication Number Publication Date
WO2008117587A1 true WO2008117587A1 (en) 2008-10-02

Family

ID=39788326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052640 Ceased WO2008117587A1 (en) 2007-03-28 2008-02-18 Optical element for optical pickup device and optical pickup device

Country Status (2)

Country Link
JP (1) JPWO2008117587A1 (en)
WO (1) WO2008117587A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4993326B2 (en) * 2009-03-30 2012-08-08 コニカミノルタアドバンストレイヤー株式会社 lens

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0981947A (en) * 1995-09-08 1997-03-28 Tdk Corp Objective lens driving device of optical disk device and objective lens
JPH09115170A (en) * 1995-10-18 1997-05-02 Seiko Epson Corp Compound objective lens and optical pickup device
JPH09230111A (en) * 1996-02-21 1997-09-05 Sharp Corp Monolithically molded lens, pickup having the same, mold for molding lens, and method for adjusting pickup
JP2002150595A (en) * 2000-11-14 2002-05-24 Konica Corp Object lens for optical pickup device, and optical pickup device
JP2003151164A (en) * 2001-11-15 2003-05-23 Konica Corp Objective lens for optical pickup device and optical pickup device
JP2005512253A (en) * 2001-12-05 2005-04-28 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Optical scanning device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0981947A (en) * 1995-09-08 1997-03-28 Tdk Corp Objective lens driving device of optical disk device and objective lens
JPH09115170A (en) * 1995-10-18 1997-05-02 Seiko Epson Corp Compound objective lens and optical pickup device
JPH09230111A (en) * 1996-02-21 1997-09-05 Sharp Corp Monolithically molded lens, pickup having the same, mold for molding lens, and method for adjusting pickup
JP2002150595A (en) * 2000-11-14 2002-05-24 Konica Corp Object lens for optical pickup device, and optical pickup device
JP2003151164A (en) * 2001-11-15 2003-05-23 Konica Corp Objective lens for optical pickup device and optical pickup device
JP2005512253A (en) * 2001-12-05 2005-04-28 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ Optical scanning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4993326B2 (en) * 2009-03-30 2012-08-08 コニカミノルタアドバンストレイヤー株式会社 lens

Also Published As

Publication number Publication date
JPWO2008117587A1 (en) 2010-07-15

Similar Documents

Publication Publication Date Title
JP2012141522A5 (en)
EP1993093A4 (en) Optical pickup apparatus, objective optical element, and optical information recording and reproducing apparatus
EP2616880A4 (en) OPTICAL OBJECTIVE MODULE ASSEMBLY WITH AUTOMATIC FOCUSING AND 3D IMAGE FORMING FUNCTION
WO2013093459A3 (en) Chormatic confocal metrological apparatus
WO2008108204A1 (en) Projection optical system
WO2008023286A3 (en) System for variably refracting ultrasound and/or light
EP1096483A3 (en) Optical pickup
WO2008136254A1 (en) Objective lens for optical pickup device, and optical pickup device
ATE539444T1 (en) ELECTRON MICROSCOPE
JP2012173373A5 (en) microscope
WO2008117587A1 (en) Optical element for optical pickup device and optical pickup device
DE602007005795D1 (en)
JP2008084490A5 (en)
JP2016218444A5 (en)
EP4141510A4 (en) Microscope objective lens, microscope device, and microscope optical system
EP1942500A3 (en) Unit to remove crosstalk in multi-layered disk, optical pickup including the unit, and optical recording and/or reproducing apparatus including the optical pickup
JP2017037191A5 (en)
WO2009037850A1 (en) Optical pickup optical system and optical pickup device using the same
JP2013109081A (en) Inverted microscope
WO2008120167A3 (en) Optical biopsy device
EP1895528A3 (en) Optical pickup device
TW200943287A (en) A micro type optical reading device
TW200725605A (en) Method and unit for separating light and optical pickup device and optical recording/playback apparatus based thereon
WO2008105281A1 (en) Optical head device and optical information recording/reproducing device
DE602008000044D1 (en) Objective lens actuator and optical pickup device with it

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08711464

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2009506241

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08711464

Country of ref document: EP

Kind code of ref document: A1