TW579514B - Optical member and optical pickup using the same - Google Patents

Optical member and optical pickup using the same Download PDF

Info

Publication number
TW579514B
TW579514B TW090130958A TW90130958A TW579514B TW 579514 B TW579514 B TW 579514B TW 090130958 A TW090130958 A TW 090130958A TW 90130958 A TW90130958 A TW 90130958A TW 579514 B TW579514 B TW 579514B
Authority
TW
Taiwan
Prior art keywords
light
optical
patent application
item
aforementioned
Prior art date
Application number
TW090130958A
Other languages
English (en)
Chinese (zh)
Inventor
Masatoshi Togashi
Shoichi Kyotani
Original Assignee
Alps Electric 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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Application granted granted Critical
Publication of TW579514B publication Critical patent/TW579514B/zh

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
    • G11B7/1395—Beam splitters or combiners
    • 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
    • G11B7/1353—Diffractive elements, e.g. holograms or gratings
    • 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
    • G11B7/1362—Mirrors
    • 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
    • G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Polarising Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)
TW090130958A 2001-02-06 2001-12-13 Optical member and optical pickup using the same TW579514B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001029432A JP3779880B2 (ja) 2001-02-06 2001-02-06 光学部材および前記光学部材を用いた光ピックアップ

Publications (1)

Publication Number Publication Date
TW579514B true TW579514B (en) 2004-03-11

Family

ID=18893783

Family Applications (1)

Application Number Title Priority Date Filing Date
TW090130958A TW579514B (en) 2001-02-06 2001-12-13 Optical member and optical pickup using the same

Country Status (4)

Country Link
JP (1) JP3779880B2 (ja)
KR (1) KR100452540B1 (ja)
CN (1) CN1368725A (ja)
TW (1) TW579514B (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4561586B2 (ja) * 2005-10-18 2010-10-13 コニカミノルタオプト株式会社 光学素子の製造方法
KR101012824B1 (ko) * 2008-11-12 2011-02-08 (주)대경산업 안마 장치
KR102010849B1 (ko) * 2012-12-26 2019-08-14 엘지디스플레이 주식회사 유기발광소자

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05203806A (ja) * 1992-01-27 1993-08-13 Sony Corp ビームスプリツタ及び光ヘツド
JPH06250021A (ja) * 1993-02-26 1994-09-09 Omron Corp 光記録再生装置及びその光学部品
JP2786996B2 (ja) * 1994-05-09 1998-08-13 キヤノン株式会社 光学部品の製造方法
JPH10142408A (ja) * 1996-11-12 1998-05-29 Canon Inc 光学素子の製造方法及び該方法による光学素子
JP3817970B2 (ja) * 1999-05-31 2006-09-06 ウシオ電機株式会社 偏光ビームスプリッタおよびそれを用いた液晶表示素子の配向膜光配向用偏光光照射装置

Also Published As

Publication number Publication date
JP2002228812A (ja) 2002-08-14
KR20020065347A (ko) 2002-08-13
JP3779880B2 (ja) 2006-05-31
CN1368725A (zh) 2002-09-11
KR100452540B1 (ko) 2004-10-12

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