WO2010053311A3 - 위상지연소자 및 이를 포함하는 광픽업장치 - Google Patents

위상지연소자 및 이를 포함하는 광픽업장치 Download PDF

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Publication number
WO2010053311A3
WO2010053311A3 PCT/KR2009/006518 KR2009006518W WO2010053311A3 WO 2010053311 A3 WO2010053311 A3 WO 2010053311A3 KR 2009006518 W KR2009006518 W KR 2009006518W WO 2010053311 A3 WO2010053311 A3 WO 2010053311A3
Authority
WO
WIPO (PCT)
Prior art keywords
phase delay
delay device
apparatus including
pickup apparatus
optical pickup
Prior art date
Application number
PCT/KR2009/006518
Other languages
English (en)
French (fr)
Other versions
WO2010053311A2 (ko
Inventor
안정애
장혜진
Original Assignee
주식회사 엘엠에스
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 주식회사 엘엠에스 filed Critical 주식회사 엘엠에스
Publication of WO2010053311A2 publication Critical patent/WO2010053311A2/ko
Publication of WO2010053311A3 publication Critical patent/WO2010053311A3/ko

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    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • 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
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/127—Lasers; Multiple laser arrays
    • G11B7/1275—Two or more lasers having different wavelengths
    • 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
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1367—Stepped phase plates

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Polarising Elements (AREA)

Abstract

본 발명은 위상지연소자 및 이를 포함하는 광픽업장치에 관한 것으로서, 더욱 상세하게는 제1 및 제2 위상지연층을 적층하여 위상지연소자를 구현하되 제2 위상지연층의 위상지연값에 대한 상기 제1 위상지연층의 위상지연값의 비를 최적화함으로써 파장이 상이한 2개의 레이저광에 대하여 각각 파장의 1/4 만큼 위상지연을 시킬 수 있는 위상지연소자를 제공하기 위한 것이다. 이를 위하여 본 발명에 따른 위상지연소자는 CD용 레이저광 및 DVD용 레이저광의 광경로상에 배치되어 상기 레이저광들의 편광상태를 변환시키는 위상지연소자에 있어서, 적층되어 있는 제1 및 제2 위상지연층을 포함하며, 제2위상지연층의 위상지연값이 140nm 내지 190nm이며, 상기 제1위상지연층의 위상지연값이 450nm 내지 1300nm인 것을 특징으로 한다.
PCT/KR2009/006518 2008-11-06 2009-11-06 위상지연소자 및 이를 포함하는 광픽업장치 WO2010053311A2 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0109866 2008-11-06
KR1020080109866A KR100969659B1 (ko) 2008-11-06 2008-11-06 위상지연소자 및 이를 포함하는 광픽업장치

Publications (2)

Publication Number Publication Date
WO2010053311A2 WO2010053311A2 (ko) 2010-05-14
WO2010053311A3 true WO2010053311A3 (ko) 2010-08-19

Family

ID=42153399

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/006518 WO2010053311A2 (ko) 2008-11-06 2009-11-06 위상지연소자 및 이를 포함하는 광픽업장치

Country Status (2)

Country Link
KR (1) KR100969659B1 (ko)
WO (1) WO2010053311A2 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6296546B2 (ja) * 2014-06-02 2018-03-20 日立アプライアンス株式会社 誘導加熱装置および誘導加熱装置の制御方法
WO2024024701A1 (ja) * 2022-07-27 2024-02-01 Ａｇｃ株式会社 光学異方性膜および位相差板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980011168A (ko) * 1996-07-30 1998-04-30 김광호 광픽업장치
JPH11305035A (ja) * 1998-04-27 1999-11-05 Fujitsu Ltd 温度依存性のない多層膜フィルタとその製造方法
KR20010089321A (ko) * 1999-08-26 2001-09-29 세야 히로미치 위상자 및 이것을 탑재한 광헤드 장치
KR100616104B1 (ko) * 2005-11-29 2006-08-25 주식회사 엘지에스 광대역 위상지연판 및 이를 갖는 광학소자 및/또는광헤드장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR980011168A (ko) * 1996-07-30 1998-04-30 김광호 광픽업장치
JPH11305035A (ja) * 1998-04-27 1999-11-05 Fujitsu Ltd 温度依存性のない多層膜フィルタとその製造方法
KR20010089321A (ko) * 1999-08-26 2001-09-29 세야 히로미치 위상자 및 이것을 탑재한 광헤드 장치
KR100616104B1 (ko) * 2005-11-29 2006-08-25 주식회사 엘지에스 광대역 위상지연판 및 이를 갖는 광학소자 및/또는광헤드장치

Also Published As

Publication number Publication date
KR20100050795A (ko) 2010-05-14
WO2010053311A2 (ko) 2010-05-14
KR100969659B1 (ko) 2010-07-14

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