DE69726352T2 - Miniaturprojektionszoomobjektiv zur Verwendung mit Anzeigetafel mit Pixelmatrix - Google Patents

Miniaturprojektionszoomobjektiv zur Verwendung mit Anzeigetafel mit Pixelmatrix Download PDF

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Publication number
DE69726352T2
DE69726352T2 DE69726352T DE69726352T DE69726352T2 DE 69726352 T2 DE69726352 T2 DE 69726352T2 DE 69726352 T DE69726352 T DE 69726352T DE 69726352 T DE69726352 T DE 69726352T DE 69726352 T2 DE69726352 T2 DE 69726352T2
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DE
Germany
Prior art keywords
lens
projection
focus
variable
image
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
DE69726352T
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German (de)
English (en)
Other versions
DE69726352D1 (de
Inventor
Melvyn H. SP FR 02-12 Corning Kreitzer
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.)
3M Innovative Properties Co
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3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of DE69726352D1 publication Critical patent/DE69726352D1/de
Application granted granted Critical
Publication of DE69726352T2 publication Critical patent/DE69726352T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/16Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/143Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
    • G02B15/1431Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive
    • G02B15/143103Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive arranged ++-
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/143Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
    • G02B15/1431Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive
    • G02B15/143105Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being positive arranged +-+
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
    • G02B15/1441Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
    • G02B15/144111Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged ++-+
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
    • G02B15/1441Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
    • G02B15/144113Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged +-++
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/74Projection arrangements for image reproduction, e.g. using eidophor
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/74Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lenses (AREA)
  • Transforming Electric Information Into Light Information (AREA)
DE69726352T 1996-08-16 1997-08-08 Miniaturprojektionszoomobjektiv zur Verwendung mit Anzeigetafel mit Pixelmatrix Expired - Fee Related DE69726352T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US2408396P 1996-08-16 1996-08-16
US24083P 1996-08-16
US3726697P 1997-01-31 1997-01-31
US37266P 1997-01-31

Publications (2)

Publication Number Publication Date
DE69726352D1 DE69726352D1 (de) 2004-01-08
DE69726352T2 true DE69726352T2 (de) 2004-09-09

Family

ID=26698017

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69726352T Expired - Fee Related DE69726352T2 (de) 1996-08-16 1997-08-08 Miniaturprojektionszoomobjektiv zur Verwendung mit Anzeigetafel mit Pixelmatrix

Country Status (6)

Country Link
US (2) US6023375A (cg-RX-API-DMAC10.html)
EP (1) EP0825474B1 (cg-RX-API-DMAC10.html)
JP (2) JPH10186233A (cg-RX-API-DMAC10.html)
KR (1) KR100465100B1 (cg-RX-API-DMAC10.html)
CN (2) CN1147753C (cg-RX-API-DMAC10.html)
DE (1) DE69726352T2 (cg-RX-API-DMAC10.html)

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Also Published As

Publication number Publication date
KR19980018720A (ko) 1998-06-05
EP0825474A3 (en) 1998-10-28
CN1186254A (zh) 1998-07-01
JPH10186233A (ja) 1998-07-14
JPH10186232A (ja) 1998-07-14
DE69726352D1 (de) 2004-01-08
US5900989A (en) 1999-05-04
CN1147753C (zh) 2004-04-28
KR100465100B1 (ko) 2005-06-13
EP0825474A2 (en) 1998-02-25
US6023375A (en) 2000-02-08
CN1153995C (zh) 2004-06-16
CN1177115A (zh) 1998-03-25
EP0825474B1 (en) 2003-11-26

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