CN1220193C - 光栅构件及光拾波装置 - Google Patents

光栅构件及光拾波装置 Download PDF

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Publication number
CN1220193C
CN1220193C CNB00118900XA CN00118900A CN1220193C CN 1220193 C CN1220193 C CN 1220193C CN B00118900X A CNB00118900X A CN B00118900XA CN 00118900 A CN00118900 A CN 00118900A CN 1220193 C CN1220193 C CN 1220193C
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CN
China
Prior art keywords
grating
face
grating member
circular
maintaining part
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.)
Expired - Fee Related
Application number
CNB00118900XA
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English (en)
Chinese (zh)
Other versions
CN1290931A (zh
Inventor
柴和夫
小林文男
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
Publication of CN1290931A publication Critical patent/CN1290931A/zh
Application granted granted Critical
Publication of CN1220193C publication Critical patent/CN1220193C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G11B7/1353—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
    • G11B7/22—Apparatus or processes for the manufacture of optical heads, e.g. assembly
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08582—Sled-type positioners
    • 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
    • G11B7/0903—Multi-beam tracking systems

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
CNB00118900XA 1999-07-01 2000-06-22 光栅构件及光拾波装置 Expired - Fee Related CN1220193C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP187339/1999 1999-07-01
JP11187339A JP2001014722A (ja) 1999-07-01 1999-07-01 グレーティング部材および光ピックアップ装置

Publications (2)

Publication Number Publication Date
CN1290931A CN1290931A (zh) 2001-04-11
CN1220193C true CN1220193C (zh) 2005-09-21

Family

ID=16204279

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB00118900XA Expired - Fee Related CN1220193C (zh) 1999-07-01 2000-06-22 光栅构件及光拾波装置

Country Status (3)

Country Link
US (1) US6785200B1 (enExample)
JP (1) JP2001014722A (enExample)
CN (1) CN1220193C (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002084655A1 (fr) * 2001-04-10 2002-10-24 Sony Corporation Capteur optique et unite de disque
JP2007242203A (ja) * 2006-03-13 2007-09-20 Funai Electric Co Ltd 光ピックアップ
JP2013105516A (ja) * 2011-11-16 2013-05-30 Sanyo Electric Co Ltd 光学素子用のホルダ、光学素子ユニットおよび光ピックアップ装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180625A (ja) * 1984-09-28 1986-04-24 Mitsubishi Electric Corp 光ピツクアツプの回折格子調整機構
JPS61211846A (ja) * 1985-03-18 1986-09-19 Pioneer Electronic Corp 光学式情報記録再生装置におけるピツクアツプ装置
US4794580A (en) * 1985-07-12 1988-12-27 Pioneer Electronic Corporation Pickup system in optical information recording and reproducing apparatus with damped lead wires
JPS62157330A (ja) * 1985-12-27 1987-07-13 Mitsubishi Electric Corp 光学ヘッド
JPS6330801A (ja) 1986-07-25 1988-02-09 Fujita Corp 太陽光集光伝送装置
JPH0690803B2 (ja) * 1989-05-22 1994-11-14 パイオニア株式会社 情報読取装置の製造方法
WO1996030903A2 (en) * 1995-03-29 1996-10-03 Philips Electronics N.V. Optical unit comprising a radiation source, a detector and a grating, and scanning device including the optical unit
US5754513A (en) * 1995-04-28 1998-05-19 Konica Corporation Information pick-up apparatus and optical disk apparatus
JP3547908B2 (ja) * 1996-07-12 2004-07-28 パイオニア株式会社 光ピックアップ
JPH1139697A (ja) * 1997-07-16 1999-02-12 Sankyo Seiki Mfg Co Ltd 光ヘッド装置

Also Published As

Publication number Publication date
CN1290931A (zh) 2001-04-11
JP2001014722A (ja) 2001-01-19
US6785200B1 (en) 2004-08-31

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Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: NIDEC SANKYO CORP.

Free format text: FORMER NAME OR ADDRESS: SANKYO SEIKI MFG. SEISAKUSHO K.K.

CP03 Change of name, title or address

Address after: Nagano

Patentee after: Sankyo Seiki Seisakusho KK

Address before: Nagano

Patentee before: Sankyo Seiki Manufacturing Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20050921

Termination date: 20140622

EXPY Termination of patent right or utility model