DE3665778D1 - Interferometer - Google Patents

Interferometer

Info

Publication number
DE3665778D1
DE3665778D1 DE8686301345T DE3665778T DE3665778D1 DE 3665778 D1 DE3665778 D1 DE 3665778D1 DE 8686301345 T DE8686301345 T DE 8686301345T DE 3665778 T DE3665778 T DE 3665778T DE 3665778 D1 DE3665778 D1 DE 3665778D1
Authority
DE
Germany
Prior art keywords
interferometer
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
Application number
DE8686301345T
Other languages
English (en)
Inventor
Keith Gardner
Robert James Longman
Robert Martin Pettigrew
Walter Thompson Welford
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.)
Plasmon Data Systems Inc
Original Assignee
Plasmon Data Systems Inc
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
Priority claimed from GB858504772A external-priority patent/GB8504772D0/en
Priority claimed from GB858517428A external-priority patent/GB8517428D0/en
Application filed by Plasmon Data Systems Inc filed Critical Plasmon Data Systems Inc
Application granted granted Critical
Publication of DE3665778D1 publication Critical patent/DE3665778D1/de
Expired legal-status Critical Current

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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
DE8686301345T 1985-02-25 1986-02-25 Interferometer Expired DE3665778D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858504772A GB8504772D0 (en) 1985-02-25 1985-02-25 Interferometers
GB858517428A GB8517428D0 (en) 1985-07-10 1985-07-10 Interferometers

Publications (1)

Publication Number Publication Date
DE3665778D1 true DE3665778D1 (en) 1989-10-26

Family

ID=26288859

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686301345T Expired DE3665778D1 (en) 1985-02-25 1986-02-25 Interferometer

Country Status (4)

Country Link
US (1) US4802736A (de)
EP (1) EP0193381B1 (de)
DE (1) DE3665778D1 (de)
WO (1) WO1986004997A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5078482A (en) * 1989-07-28 1992-01-07 At&T Bell Laboratories Resolution confocal microscope, and device fabrication method using same
JPH04218015A (ja) * 1990-07-27 1992-08-07 Victor Co Of Japan Ltd 偏光変換素子及び表示装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2601175A (en) * 1947-08-05 1952-06-17 Smith Francis Hughes Interference microscope
GB1373011A (en) * 1972-01-26 1974-11-06 Vickers Ltd Production of holograms
US4616237A (en) * 1982-09-27 1986-10-07 Pa Management Consultants, Ltd. Data storage medium

Also Published As

Publication number Publication date
EP0193381B1 (de) 1989-09-20
WO1986004997A1 (en) 1986-08-28
EP0193381A1 (de) 1986-09-03
US4802736A (en) 1989-02-07

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Legal Events

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