DE69718552D1 - Zweifache PDLC Projektions-Headup-Anzeige - Google Patents

Zweifache PDLC Projektions-Headup-Anzeige

Info

Publication number
DE69718552D1
DE69718552D1 DE69718552T DE69718552T DE69718552D1 DE 69718552 D1 DE69718552 D1 DE 69718552D1 DE 69718552 T DE69718552 T DE 69718552T DE 69718552 T DE69718552 T DE 69718552T DE 69718552 D1 DE69718552 D1 DE 69718552D1
Authority
DE
Germany
Prior art keywords
pdlc
dual
projection
headup display
headup
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 - Lifetime
Application number
DE69718552T
Other languages
English (en)
Other versions
DE69718552T2 (de
Inventor
J David Margerum
John H Erdmann
Khoon-Cheng Lim
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.)
DirecTV Group Inc
Original Assignee
Hughes Electronics Corp
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 Hughes Electronics Corp filed Critical Hughes Electronics Corp
Publication of DE69718552D1 publication Critical patent/DE69718552D1/de
Application granted granted Critical
Publication of DE69718552T2 publication Critical patent/DE69718552T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • G02B2027/012—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility comprising devices for attenuating parasitic image effects
DE69718552T 1996-05-08 1997-05-06 Zweifache PDLC Projektions-Headup-Anzeige Expired - Lifetime DE69718552T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/646,576 US5729242A (en) 1996-05-08 1996-05-08 Dual PDLC-projection head-up display

Publications (2)

Publication Number Publication Date
DE69718552D1 true DE69718552D1 (de) 2003-02-27
DE69718552T2 DE69718552T2 (de) 2003-11-20

Family

ID=24593586

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69718552T Expired - Lifetime DE69718552T2 (de) 1996-05-08 1997-05-06 Zweifache PDLC Projektions-Headup-Anzeige

Country Status (4)

Country Link
US (1) US5729242A (de)
EP (1) EP0806693B1 (de)
JP (1) JPH1082969A (de)
DE (1) DE69718552T2 (de)

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EP0806693A2 (de) 1997-11-12
JPH1082969A (ja) 1998-03-31
EP0806693B1 (de) 2003-01-22
EP0806693A3 (de) 1998-07-01
DE69718552T2 (de) 2003-11-20

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