DE69431152D1 - Interferometrisches flughöhenmessgerät - Google Patents

Interferometrisches flughöhenmessgerät

Info

Publication number
DE69431152D1
DE69431152D1 DE69431152T DE69431152T DE69431152D1 DE 69431152 D1 DE69431152 D1 DE 69431152D1 DE 69431152 T DE69431152 T DE 69431152T DE 69431152 T DE69431152 T DE 69431152T DE 69431152 D1 DE69431152 D1 DE 69431152D1
Authority
DE
Germany
Prior art keywords
disk
light
read
interference pattern
write head
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
DE69431152T
Other languages
English (en)
Other versions
DE69431152T2 (de
Inventor
R Hollars
P Danson
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.)
Seagate Technology LLC
Original Assignee
Seagate Technology LLC
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 Seagate Technology LLC filed Critical Seagate Technology LLC
Publication of DE69431152D1 publication Critical patent/DE69431152D1/de
Application granted granted Critical
Publication of DE69431152T2 publication Critical patent/DE69431152T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Materials For Medical Uses (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
DE69431152T 1993-04-29 1994-04-15 Interferometrisches flughöhenmessgerät Expired - Fee Related DE69431152T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/057,054 US5473431A (en) 1993-04-29 1993-04-29 Interferometric flying height measuring device including an addition of a spacer layer
PCT/US1994/004191 WO1994025822A1 (en) 1993-04-29 1994-04-15 Interferometric flying height measuring device

Publications (2)

Publication Number Publication Date
DE69431152D1 true DE69431152D1 (de) 2002-09-12
DE69431152T2 DE69431152T2 (de) 2003-03-27

Family

ID=22008230

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69431152T Expired - Fee Related DE69431152T2 (de) 1993-04-29 1994-04-15 Interferometrisches flughöhenmessgerät

Country Status (6)

Country Link
US (1) US5473431A (de)
EP (1) EP0700505B1 (de)
JP (1) JP3027769B2 (de)
AT (1) ATE221984T1 (de)
DE (1) DE69431152T2 (de)
WO (1) WO1994025822A1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3536866B2 (ja) * 1994-12-22 2004-06-14 ソニー株式会社 映像記録再生装置および方法
GB2301884A (en) * 1995-06-06 1996-12-18 Holtronic Technologies Ltd Characterising multilayer thin film systems by interferometry
WO1998002715A1 (en) * 1996-07-12 1998-01-22 Phase Metrics Coatings for simultaneous control of tribological and optical properties of interferometric reference surfaces
WO1999008066A1 (en) * 1997-08-05 1999-02-18 Medar, Inc. Interference method and system for measuring the thickness of an optically-transmissive thin layer formed on a relatively planar, optically-reflective surface
SG77149A1 (en) * 1997-11-20 2000-12-19 Inst Data Storage A method and apparatus for measuring flying height of the slider and in-situ monitoring a slider-disk interface
US6275029B1 (en) 1998-02-10 2001-08-14 Seagate Technology Llc System and method for monitoring flying height using textured disks
US6166819A (en) * 1998-06-26 2000-12-26 Siemens Aktiengesellschaft System and methods for optically measuring dielectric thickness in semiconductor devices
US6717764B2 (en) 2000-06-02 2004-04-06 Seagate Technology Llc Method and apparatus for head fly height measurement
US6665077B1 (en) * 2000-10-24 2003-12-16 Seagate Technology Llc Method and apparatus for enhanced sensitivity fly height testing and measurement
US6785081B2 (en) 2000-11-02 2004-08-31 Seagate Technology Llc Fly height detector
US6704103B2 (en) 2001-08-23 2004-03-09 Kla-Tencor Corporation Coatings for sensitivity enhancement of signal from glass disks
US6804010B1 (en) 2002-01-14 2004-10-12 Seagate Technology Llc Optical coating thickness optimization for fly height test media
JP4117353B2 (ja) * 2003-11-05 2008-07-16 ナプソン株式会社 検査ヘッド用位置調整装置及び非接触型抵抗率測定装置
US7715017B2 (en) * 2004-12-13 2010-05-11 Microphysics Inc Dynamic fringe phase detection for measurement of very small spacing
US20080170234A1 (en) * 2007-01-17 2008-07-17 Samsung Electronics Co. Ltd. Method and apparatus of optical test stand using blue to ultra-violet light source for component level measurement of head gimbal assembly for use in hard disk drive
US20080170233A1 (en) * 2007-01-17 2008-07-17 Dongman Kim Apparatus for compatible glass substrate test disk for component level measurement of a head gimbal assembly
JP5719587B2 (ja) * 2010-12-28 2015-05-20 京セラクリスタルデバイス株式会社 ディスク装置用スペーサー

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653760A (en) * 1970-12-18 1972-04-04 Polaroid Corp Apparatus for copying photographic transparencies
US4486096A (en) * 1980-07-25 1984-12-04 Canon Kabushiki Kaisha Device for measuring incident light
US4593368A (en) * 1984-06-04 1986-06-03 Kollmorgen Technologies Corporation Technique for measuring very small spacings
DE3573018D1 (en) * 1984-09-25 1989-10-19 Richard Distl Measurement arrangement for analysing electromagnetic radiation
JPS6220187A (ja) * 1985-07-19 1987-01-28 Toshiba Corp 磁気デイスク装置
JPH0252205A (ja) * 1988-08-17 1990-02-21 Dainippon Screen Mfg Co Ltd 膜厚測定方法
US5097368A (en) * 1988-10-17 1992-03-17 Conner Peripherals, Inc. Information recording apparatus with a non-Newtonian liquid bearing
US5202803A (en) * 1991-07-02 1993-04-13 International Business Machines Corporation Disk file with liquid film head-disk interface

Also Published As

Publication number Publication date
EP0700505A1 (de) 1996-03-13
JPH08509812A (ja) 1996-10-15
ATE221984T1 (de) 2002-08-15
EP0700505A4 (de) 1999-04-07
JP3027769B2 (ja) 2000-04-04
WO1994025822A1 (en) 1994-11-10
US5473431A (en) 1995-12-05
DE69431152T2 (de) 2003-03-27
EP0700505B1 (de) 2002-08-07

Similar Documents

Publication Publication Date Title
DE69431152D1 (de) Interferometrisches flughöhenmessgerät
DE3789762D1 (de) Löschbares optisches Datenspeichermedium mit einer eingebetteten Servospur und einer unterflächigen Aufnahmeschnittstelle.
KR960030118A (ko) 자기 기록 디스크
DE68907506D1 (de) Anzeigevorrichtung.
SE7908541L (sv) Uppteckningsberare innehallande information i en optiskt lesbar stralningsreflekterande informationsstruktur
JPS5651045A (en) Detector for part between data of record player
GB1286546A (en) Improvements in or relating to signal recording and reproducing apparatus
SE7907437L (sv) Uppteckningsberare med en optiskt lesbar stralningsreflekterande informationsstruktur
FR2346681A1 (fr) Dispositif de controle optique du profil d'un objet, utilisant un faisceau laser plan
DE3675626D1 (de) Zentrifugalanalysator mit positionsdetektor.
FI903117A0 (fi) Anordning foer maetning av dimensioner.
JPS5534340A (en) Recording reproducing system by light beam
KR0133875Y1 (ko) 릴디스크의 회전속도 감지장치
JPS5414789A (en) Surface inspecting apparatus
JPH0241108U (de)
JPS5443710A (en) Fiexible magnetic disc device
JPS6147505A (ja) 微少間隙測定方法
JPS5764336A (en) Track signal recording system of optical disk device
SU781921A2 (ru) Устройство дл контрол параметров скольжени плавающей магнитной головки
SU1541055A1 (ru) Устройство дл образовани паза и гребн на щитах
JPS533832A (en) Optical system of read/write device using laser beam scan
KR860008531A (ko) 광학식 헤드의 트랙킹 오차 검출장치
JPS5683874A (en) Reproducing device
ATE3082T1 (de) Vorrichtung zum vermindern der von aeusserem fremdlicht verursachten lichtreflexion an verkehrsleuchten.
SU520510A1 (ru) Автоколлимационный способ контрол профил выпуклых криволинейных поверхностей

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee