NL177948C - DEVICE FOR DISPLAYING A POINT ON A SCREEN. - Google Patents

DEVICE FOR DISPLAYING A POINT ON A SCREEN.

Info

Publication number
NL177948C
NL177948C NLAANVRAGE7304443,A NL7304443A NL177948C NL 177948 C NL177948 C NL 177948C NL 7304443 A NL7304443 A NL 7304443A NL 177948 C NL177948 C NL 177948C
Authority
NL
Netherlands
Prior art keywords
displaying
screen
point
Prior art date
Application number
NLAANVRAGE7304443,A
Other languages
Dutch (nl)
Other versions
NL7304443A (en
NL177948B (en
Original Assignee
Eca S A R L Soc
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 S A R L Soc filed Critical Eca S A R L Soc
Publication of NL7304443A publication Critical patent/NL7304443A/xx
Publication of NL177948B publication Critical patent/NL177948B/en
Application granted granted Critical
Publication of NL177948C publication Critical patent/NL177948C/en

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)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Lasers (AREA)
NLAANVRAGE7304443,A 1972-03-31 1973-03-30 DEVICE FOR DISPLAYING A POINT ON A SCREEN. NL177948C (en)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
NL7304443A NL7304443A (en) 1973-10-02
NL177948B NL177948B (en) 1985-07-16
NL177948C true NL177948C (en) 1985-12-16

Family

ID=9096209

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7304443,A NL177948C (en) 1972-03-31 1973-03-30 DEVICE FOR DISPLAYING A POINT ON A SCREEN.

Country Status (6)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19802165A1 (en) * 1998-01-21 1999-07-22 Man Systemelektronik Gmbh Arrangement for evenly illuminating or illuminating an area for displaying information
DE19812090C2 (en) 1998-03-19 2000-03-09 Daimler Chrysler Ag Multi-cylinder piston internal combustion engine with at least two cylinder banks
FR2856159B1 (en) * 2003-06-16 2005-09-09 Laurent Lipiner SYSTEM AND METHOD FOR VISUALIZING IMAGE CONTENT ON TRANSPARENT SURFACE, AND ADAPTED SURFACE COATINGS.

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
DE2311330B2 (en) 1975-05-07
BE795975A (en) 1973-06-18
GB1394541A (en) 1975-05-21
FR2178444A5 (en) 1973-11-09
NL7304443A (en) 1973-10-02
US3838917A (en) 1974-10-01
NL177948B (en) 1985-07-16
DE2311330A1 (en) 1973-10-04
DE2311330C3 (en) 1975-12-11

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Legal Events

Date Code Title Description
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee