WO2008081941A1 - 波長選択波長板およびそれを用いた光ヘッド装置 - Google Patents

波長選択波長板およびそれを用いた光ヘッド装置 Download PDF

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Publication number
WO2008081941A1
WO2008081941A1 PCT/JP2007/075305 JP2007075305W WO2008081941A1 WO 2008081941 A1 WO2008081941 A1 WO 2008081941A1 JP 2007075305 W JP2007075305 W JP 2007075305W WO 2008081941 A1 WO2008081941 A1 WO 2008081941A1
Authority
WO
WIPO (PCT)
Prior art keywords
wavelength
polarized light
linearly polarized
optical head
head device
Prior art date
Application number
PCT/JP2007/075305
Other languages
English (en)
French (fr)
Inventor
Yukihiro Tao
Hiromasa Sato
Atsushi Koyanagi
Koji Miyasaka
Original Assignee
Asahi Glass 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 Glass Co., Ltd. filed Critical Asahi Glass Co., Ltd.
Priority to JP2008552191A priority Critical patent/JPWO2008081941A1/ja
Publication of WO2008081941A1 publication Critical patent/WO2008081941A1/ja
Priority to US12/497,194 priority patent/US8040781B2/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • 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
    • 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
    • G11B7/1369—Active plates, e.g. liquid crystal panels or electrostrictive elements
    • 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)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Head (AREA)
  • Polarising Elements (AREA)

Abstract

　旋光板は、旋光性材料層を有する。位相板は、前記旋光板の第１の面側に設けられ、少なくとも１層の複屈折材料層を有する。前記第１の面側を光路の出射側に向けて配置することにより、少なくとも第１波長の直線偏光を含む第１の直線偏光群と、少なくとも前記第１波長と異なる第２波長の直線偏光を含む第２の直線偏光群に異なった位相差を与えるよう構成される。
PCT/JP2007/075305 2007-01-05 2007-12-28 波長選択波長板およびそれを用いた光ヘッド装置 WO2008081941A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008552191A JPWO2008081941A1 (ja) 2007-01-05 2007-12-28 波長選択波長板およびそれを用いた光ヘッド装置
US12/497,194 US8040781B2 (en) 2007-01-05 2009-07-02 Wavelength selecting wavelength plate and optical head device using it

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007000577 2007-01-05
JP2007-000577 2007-01-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/497,194 Continuation US8040781B2 (en) 2007-01-05 2009-07-02 Wavelength selecting wavelength plate and optical head device using it

Publications (1)

Publication Number Publication Date
WO2008081941A1 true WO2008081941A1 (ja) 2008-07-10

Family

ID=39588621

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/075305 WO2008081941A1 (ja) 2007-01-05 2007-12-28 波長選択波長板およびそれを用いた光ヘッド装置

Country Status (3)

Country Link
US (1) US8040781B2 (ja)
JP (1) JPWO2008081941A1 (ja)
WO (1) WO2008081941A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI536053B (zh) * 2012-06-26 2016-06-01 Far Eastern New Century Corp The method of making the phase difference plate and the prepared phase difference plate and the phase difference plate layer fit
CN104319282B (zh) * 2014-09-23 2018-02-27 京东方科技集团股份有限公司 发光二极管显示面板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002040253A (ja) * 2000-07-28 2002-02-06 Asahi Glass Co Ltd 旋光子および光ヘッド装置
JP2002250815A (ja) * 2001-02-22 2002-09-06 Asahi Glass Co Ltd ２波長用位相板および光ヘッド装置
JP2005209327A (ja) * 2003-12-26 2005-08-04 Asahi Glass Co Ltd 偏光性回折素子および光ヘッド装置
JP2006236549A (ja) * 2005-01-31 2006-09-07 Asahi Glass Co Ltd 光ヘッド装置、広帯域位相板および偏光回折素子

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5940150A (en) * 1991-11-27 1999-08-17 Reveo, Inc. Electro-optical glazing structures having total-reflection and transparent modes of operation for use in dynamical control of electromagnetic radiation
JP3870477B2 (ja) * 1997-04-18 2007-01-17 宇部興産株式会社 偏光処理方法
JP3671768B2 (ja) 1999-09-30 2005-07-13 旭硝子株式会社 光ヘッド装置
JP3858581B2 (ja) * 2000-09-26 2006-12-13 セイコーエプソン株式会社 液晶装置及び電子機器
KR100960421B1 (ko) * 2002-04-26 2010-05-28 엡슨 토요콤 가부시키가이샤 적층파장판 및 그것을 사용한 광픽업
JP4412065B2 (ja) * 2004-06-14 2010-02-10 日本電気株式会社 光ヘッド装置及び光学式情報記録再生装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002040253A (ja) * 2000-07-28 2002-02-06 Asahi Glass Co Ltd 旋光子および光ヘッド装置
JP2002250815A (ja) * 2001-02-22 2002-09-06 Asahi Glass Co Ltd ２波長用位相板および光ヘッド装置
JP2005209327A (ja) * 2003-12-26 2005-08-04 Asahi Glass Co Ltd 偏光性回折素子および光ヘッド装置
JP2006236549A (ja) * 2005-01-31 2006-09-07 Asahi Glass Co Ltd 光ヘッド装置、広帯域位相板および偏光回折素子

Also Published As

Publication number Publication date
US20090268585A1 (en) 2009-10-29
JPWO2008081941A1 (ja) 2010-04-30
US8040781B2 (en) 2011-10-18

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