JP2001076325A5 - - Google Patents

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Publication number
JP2001076325A5
JP2001076325A5 JP1999253544A JP25354499A JP2001076325A5 JP 2001076325 A5 JP2001076325 A5 JP 2001076325A5 JP 1999253544 A JP1999253544 A JP 1999253544A JP 25354499 A JP25354499 A JP 25354499A JP 2001076325 A5 JP2001076325 A5 JP 2001076325A5
Authority
JP
Japan
Prior art keywords
light beam
head arm
luminous flux
linearly polarized
polarized light
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.)
Withdrawn
Application number
JP1999253544A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001076325A (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP25354499A priority Critical patent/JP2001076325A/ja
Priority claimed from JP25354499A external-priority patent/JP2001076325A/ja
Priority to US09/655,342 priority patent/US6618218B1/en
Publication of JP2001076325A publication Critical patent/JP2001076325A/ja
Publication of JP2001076325A5 publication Critical patent/JP2001076325A5/ja
Withdrawn legal-status Critical Current

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JP25354499A 1999-09-07 1999-09-07 変位検出装置及び情報記録装置 Withdrawn JP2001076325A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP25354499A JP2001076325A (ja) 1999-09-07 1999-09-07 変位検出装置及び情報記録装置
US09/655,342 US6618218B1 (en) 1999-09-07 2000-09-05 Displacement detecting apparatus and information recording apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25354499A JP2001076325A (ja) 1999-09-07 1999-09-07 変位検出装置及び情報記録装置

Publications (2)

Publication Number Publication Date
JP2001076325A JP2001076325A (ja) 2001-03-23
JP2001076325A5 true JP2001076325A5 (enExample) 2006-10-19

Family

ID=17252858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25354499A Withdrawn JP2001076325A (ja) 1999-09-07 1999-09-07 変位検出装置及び情報記録装置

Country Status (2)

Country Link
US (1) US6618218B1 (enExample)
JP (1) JP2001076325A (enExample)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002124047A (ja) * 2000-10-11 2002-04-26 Sony Corp 磁気ディスク装置
MXPA05008156A (es) * 2003-02-01 2005-09-30 Neuralab Ltd Inmunizacion activa para generar anticuerpos para beta-a soluble.
JP3892407B2 (ja) 2003-03-25 2007-03-14 富士通株式会社 撮影装置
US7050173B2 (en) * 2003-04-01 2006-05-23 Seagate Technology Llc Method and arrangement for removing noise and measurements of head-media spacing modulation for digital recording
US7064841B2 (en) * 2003-04-01 2006-06-20 Seagate Technology Llc Method and arrangement for topographically characterizing a surface of a hard disk with distortion due to disk modes removed
KR100503007B1 (ko) * 2003-06-24 2005-07-21 삼성전기주식회사 광픽업용 액추에이터의 부공진 측정 장치
JP2005121448A (ja) * 2003-10-16 2005-05-12 Pioneer Electronic Corp 光ピックアップの出射光検査装置
JP4216313B2 (ja) * 2004-06-07 2009-01-28 パイオニア株式会社 電子ビーム位置変動測定方法、電子ビーム位置変動測定装置、電子ビーム記録装置
JP4514209B2 (ja) 2004-10-15 2010-07-28 キヤノン株式会社 位置検出装置及び方法
JP2006163291A (ja) * 2004-12-10 2006-06-22 Canon Inc 光学素子及びその製造方法
JP2006191302A (ja) * 2005-01-05 2006-07-20 Toshiba Corp 電子カメラ装置とその操作案内方法
JP4914040B2 (ja) 2005-07-28 2012-04-11 キヤノン株式会社 干渉測定装置
JP4804058B2 (ja) * 2005-07-28 2011-10-26 キヤノン株式会社 干渉測定装置
US7215504B1 (en) 2005-10-19 2007-05-08 Western Digital Technologies, Inc. Disk drive using an optical sensor to detect a position of an actuator arm
US7495857B1 (en) 2005-12-30 2009-02-24 Western Digital Technologies, Inc. Servo writing a disk drive by writing spiral tracks using a mechanical position sensor
US7619844B1 (en) 2005-12-30 2009-11-17 Western Digital Technologies, Inc. Disk drive comprising a mechanical position sensor to prevent a runaway condition
US7365932B1 (en) 2005-12-30 2008-04-29 Western Digital Technologies, Inc. Disk drive comprising an optical sensor for vibration mode compensation
US7480116B1 (en) 2006-01-20 2009-01-20 Western Digital Technologies, Inc. Disk drive employing coarse position feedback from mechanical position sensor to improve format efficiency
US7605994B2 (en) * 2006-09-27 2009-10-20 Samsung Electronics Co., Ltd. Multiple sinusoidal seek servo system for reducing seek acoustics and seek time in hard disk drives
JP5792992B2 (ja) * 2011-05-06 2015-10-14 キヤノン株式会社 干渉計測装置
JP6634581B2 (ja) * 2015-09-07 2020-01-22 株式会社テージーケー モータアクチュエータ、モータアクチュエータの加工方法及びモータアクチュエータの検査方法
CN108020843A (zh) * 2017-12-13 2018-05-11 苏州科瓴精密机械科技有限公司 自动行走设备及自动行走设备定位系统
CN109821761B (zh) * 2019-03-13 2024-04-02 东莞市冠泰机电设备有限公司 一种多臂层零件的孔径检测装置
US11885742B2 (en) 2019-03-26 2024-01-30 Nec Corporation Receiver, detection system, and detection method

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641296A (en) * 1983-04-28 1987-02-03 Nippon Kogaku K.K. Optical head for information recording apparatus
DE3429382A1 (de) * 1983-08-10 1985-02-28 Canon K.K., Tokio/Tokyo Optischer kopf
JPS61160845A (ja) * 1985-01-09 1986-07-21 Nippon Kogaku Kk <Nikon> 光デイスクの記録再生装置
US4742218A (en) * 1985-03-11 1988-05-03 Hitachi, Ltd. Focus error detection apparatus utilizing focusing an front and rear sides of focal planes
JPS6226644A (ja) * 1985-07-29 1987-02-04 Hitachi Ltd 光学式情報記録再生装置
US5026623A (en) 1986-04-21 1991-06-25 Canon Kabushiki Kaisha Optical recording medium
WO1988007253A1 (en) * 1987-03-09 1988-09-22 Matsushita Electric Industrial Co., Ltd. Magnetic recording/reproducing apparatus
US5067813A (en) 1988-04-06 1991-11-26 Canon Kabushiki Kaisha Optical apparatus for measuring displacement of an object
US5647049A (en) * 1991-05-31 1997-07-08 Kabushiki Kaisha Toshiba Video recording/reproducing apparatus which uses a differential motion vector determined using two other motion vectors
SG46603A1 (en) 1991-08-30 1998-02-20 Canon Kk Head positioning device
US5504722A (en) * 1993-01-27 1996-04-02 Nippon Telegraph And Telephone Corporation Magneto-optic information storage system utilizing a TE/TM mode controlling laser diode
JPH0727543A (ja) 1993-07-12 1995-01-27 Canon Inc 光学式変位センサー
JPH1079180A (ja) 1996-08-30 1998-03-24 Canon Inc 情報記録装置
US6631047B2 (en) * 1997-09-22 2003-10-07 Canon Kabushiki Kaisha Interference device, position detecting device, positioning device and information recording apparatus using the same

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