BE795975A - Dispositif d'affichage d'un point sur un ecran transparent ou translucide - Google Patents

Dispositif d'affichage d'un point sur un ecran transparent ou translucide

Info

Publication number
BE795975A
BE795975A BE128114A BE128114A BE795975A BE 795975 A BE795975 A BE 795975A BE 128114 A BE128114 A BE 128114A BE 128114 A BE128114 A BE 128114A BE 795975 A BE795975 A BE 795975A
Authority
BE
Belgium
Prior art keywords
dot
transparent
display device
translucent screen
translucent
Prior art date
Application number
BE128114A
Other languages
English (en)
Original Assignee
Eca
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 Eca filed Critical Eca
Publication of BE795975A publication Critical patent/BE795975A/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/02—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1804—Achieving homogeneous illumination
    • G09F2013/1831—Achieving homogeneous illumination using more than one light source

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Lasers (AREA)
BE128114A 1972-03-31 1973-02-26 Dispositif d'affichage d'un point sur un ecran transparent ou translucide BE795975A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7211578A FR2178444A5 (fr) 1972-03-31 1972-03-31

Publications (1)

Publication Number Publication Date
BE795975A true BE795975A (fr) 1973-06-18

Family

ID=9096209

Family Applications (1)

Application Number Title Priority Date Filing Date
BE128114A BE795975A (fr) 1972-03-31 1973-02-26 Dispositif d'affichage d'un point sur un ecran transparent ou translucide

Country Status (6)

Country Link
US (1) US3838917A (fr)
BE (1) BE795975A (fr)
DE (1) DE2311330C3 (fr)
FR (1) FR2178444A5 (fr)
GB (1) GB1394541A (fr)
NL (1) NL177948C (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19802165A1 (de) * 1998-01-21 1999-07-22 Man Systemelektronik Gmbh Anordnung zum gleichmäßigen Be- bzw. Ausleuchten einer Fläche zum Anzeigen von Informationen
DE19812090C2 (de) 1998-03-19 2000-03-09 Daimler Chrysler Ag Mehrzylindrische Kolbenbrennkraftmaschine mit mindestens zwei Zylinderbänken
FR2856159B1 (fr) * 2003-06-16 2005-09-09 Laurent Lipiner Systeme et procede pour visualiser un contenu image sur une surface transparente, et revetements de surface adaptes.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1302353A (en) * 1917-09-20 1919-04-29 Conrad Friedrich Luminous hair-line.
US2584777A (en) * 1949-04-18 1952-02-05 George S Adolfson Clearance indicating arm
US2898880A (en) * 1956-10-04 1959-08-11 Jr Perry B Newton Single panel illuminated instrument dial

Also Published As

Publication number Publication date
GB1394541A (en) 1975-05-21
DE2311330A1 (de) 1973-10-04
NL177948B (nl) 1985-07-16
FR2178444A5 (fr) 1973-11-09
NL177948C (nl) 1985-12-16
US3838917A (en) 1974-10-01
DE2311330C3 (de) 1975-12-11
NL7304443A (fr) 1973-10-02
DE2311330B2 (de) 1975-05-07

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