DE9218854U1 - Light guide disc with interchangeable transparency - Google Patents
Light guide disc with interchangeable transparencyInfo
- Publication number
- DE9218854U1 DE9218854U1 DE9218854U DE9218854U DE9218854U1 DE 9218854 U1 DE9218854 U1 DE 9218854U1 DE 9218854 U DE9218854 U DE 9218854U DE 9218854 U DE9218854 U DE 9218854U DE 9218854 U1 DE9218854 U1 DE 9218854U1
- Authority
- DE
- Germany
- Prior art keywords
- pictogram
- disc
- light guide
- guide disc
- light
- 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
Links
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
Piktogrammleuchten sind Formleuchten mit flächenhafter lxchtabstrahlender Oberfläche, auf der ein oder mehrere Piktogramme angebracht sind. Die Piktogramme sind transparent und werden optisch dicht, also direkt auf der lichtabstrahlenden Fläche, ohne daß sich Grenzflächen zwischen Piktogrammen und abstrahlendem Untergrund ausbilden, angebracht. Dies geschieht entweder durch direkten Siebdruck auf die lichtabstrahlende Untergrundfläche oder durch Aufkleben einer Folie.Pictogram lights are shaped lights with a flat light-emitting surface on which one or more pictograms are attached. The pictograms are transparent and are attached optically densely, i.e. directly on the light-emitting surface, without any interfaces forming between the pictograms and the radiating surface. This is done either by direct screen printing on the light-emitting surface or by sticking a film on it.
Dies hat zur Folge, daß bei einem Auswechseln des Piktogramms die gesamte Abdeckung gewechselt werden muß.This means that if the pictogram is replaced, the entire cover must be replaced.
Bei Lichtleitscheiben mit aufgedruckten oder aufge-0 klebten Piktogrammen zeigen Messungen außerdem, daß weniger Licht durch das Piktogramm austritt als ei-In the case of light guide panels with printed or glued-on pictograms, measurements also show that less light escapes through the pictogram than
gentlich dem Transmissionsgrad der verwendeten Beschichtungen entspricht.actually corresponds to the transmittance of the coatings used.
Erfindungsgemäße Aufgabe ist es deshalb, einen Piktogrammträger mit Lichtleitscheibe zu finden, bei der das Piktogramm eine optimale Helligkeit besitzt und bei dem ein Auswechseln des Piktogramms nicht mehr die Auswechselung des gesamten Piktogrammträgers zur Folge hat.The object of the invention is therefore to find a pictogram carrier with a light-guiding disk in which the pictogram has an optimal brightness and in which replacing the pictogram no longer results in replacing the entire pictogram carrier.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß entsprechend den Ansprüchen das Piktogramm auf einer transparenten, von der Lichtleitscheibe separierten Scheibe aufgebracht wird, die unter Erhaltung der Grenzflächen zumindest unter der Grundfläche des Pikrogramms auf die Lichtleitscheibe aufgebracht wird.The object is achieved according to the invention in that according to the claims, the pictogram is applied to a transparent disc separated from the light-guiding disc, which is applied to the light-guiding disc while preserving the boundary surfaces at least under the base area of the pictogram.
Wird nämlich ein Piktogramm optisch dicht auf die Lichtleitscheibe aufgebracht, so daß keine Grenzfläehe entsteht, so bildet die Außenseite des Piktogramms eine Grenzfläche, an der die im Innern der Scheibe befindlichen Lichtstrahlen vielfach total reflektiert werden. Somit durchdringen die Lichtstrahlen mehrfach die farbigen und damit lichtabsorbierenden Beschichtungen, die das Piktogramm bilden, wobei erhöhte Verluste entstehen.If a pictogram is applied optically tightly to the light guide disc so that no boundary surface is created, the outside of the pictogram forms a boundary surface at which the light rays inside the disc are often totally reflected. The light rays therefore penetrate the colored and thus light-absorbing coatings that form the pictogram several times, resulting in increased losses.
Diese Verluste werden bei getrennt angeordneten Piktogrammscheiben vermindert, weil die Grenzflächen 0 erhalten bleiben und somit die Lichtstrahlen durch Piktogramme bzw. durch die Piktogrammscheibenbeschichtung nur ein einziges Mal passieren.These losses are reduced when the pictogram discs are arranged separately because the boundary surfaces 0 are retained and thus the light rays only pass through the pictograms or through the pictogram disc coating once.
Um die Trennung zu erzielen, genügt es, eine dünne 5 Scheibe ohne Kleber oder Verbindungsmasse direkt,To achieve the separation, it is sufficient to cut a thin 5 disc without glue or bonding compound directly,
oder selbstverständlich auch im Abstand, auf die Lichtleitscheibe aufzubringen.or, of course, at a distance, to the light guide disc.
Der zunächst unwirtschaftliche Zwang zur Erhöhung der Helligkeit, eine gesonderte Piktogrammscheibe benutzen zu müssen, wird erfindungsgemäß zum Vorteil, wenn die Piktogrammscheibe auswechselbar angebracht wird, so daß das Piktogramm ohne Entfernung der Lichtleitscheibe ausgewechselt werden kann. In diesem Fall wird erfindungsgemäß die Piktogrammscheibe durch lösbare Verbindungen, wie zum Beispiel Schrauben, Stifte oder Klemmverbindungen mit der Lichtleitscheibe verbunden .The initially uneconomical need to use a separate pictogram disc to increase the brightness becomes an advantage according to the invention if the pictogram disc is attached in an interchangeable manner, so that the pictogram can be replaced without removing the light guide disc. In this case, according to the invention, the pictogram disc is connected to the light guide disc by means of detachable connections, such as screws, pins or clamp connections.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der folgenden Beschreibung näher erläutert. Die einzige Figur zeigt eine Darstellung des erfinderischen Prinzips an einem Beispiel in Seitenansicht und Aufsicht.An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. The single figure shows a representation of the inventive principle using an example in side view and top view.
Die Lampe 1 strahlt in die Kante einer Lichtleitscheibe 2. Die Lichtleitscheibe 2 besitzt auf einer Seite eine diffuse Beschichtung 3, zum Beispiel mit weißer Farbe.The lamp 1 shines into the edge of a light guide plate 2. The light guide plate 2 has a diffuse coating 3 on one side, for example with a white color.
Auf der gegenüberliegenden Seite befindet sich in optischer Trennung eine transparente Piktogrammscheibe 4.On the opposite side there is a transparent pictogram disc 4 for optical separation.
Im Lichtleitkörper befinden sich die Sacklöcher 5, in die Zylinderstifte 6 mit angeformtem Kopf durch dafür vorgesehene Bohrungen der Piktogrammscheibe 4 eingreifen. The light guide body contains blind holes 5 into which cylindrical pins 6 with molded heads engage through holes provided for this purpose in the pictogram disc 4.
Auf diese Weise ist die Piktogrammscheibe leicht auswechselbar und die erfinderische Aufgabe ist gelöst.In this way, the pictogram disc is easily replaceable and the inventive problem is solved.
Claims (4)
dadurch gekennzeichnet , daß das Piktogramm auf einer von der Lichtleittransparent coating for light emission for backlighting a pictogram,
characterized in that the pictogram is on a light guide
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9218854U DE9218854U1 (en) | 1992-02-20 | 1992-02-20 | Light guide disc with interchangeable transparency |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4205136A DE4205136A1 (en) | 1992-02-20 | 1992-02-20 | Indicator light for emergency use |
DE9218854U DE9218854U1 (en) | 1992-02-20 | 1992-02-20 | Light guide disc with interchangeable transparency |
Publications (1)
Publication Number | Publication Date |
---|---|
DE9218854U1 true DE9218854U1 (en) | 1995-10-12 |
Family
ID=6452153
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE9218854U Expired - Lifetime DE9218854U1 (en) | 1992-02-20 | 1992-02-20 | Light guide disc with interchangeable transparency |
DE4205136A Withdrawn DE4205136A1 (en) | 1991-09-03 | 1992-02-20 | Indicator light for emergency use |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4205136A Withdrawn DE4205136A1 (en) | 1991-09-03 | 1992-02-20 | Indicator light for emergency use |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE9218854U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19746854A1 (en) * | 1997-10-23 | 1999-05-12 | Willing Gmbh Dr Ing | Escape indication light with light emitting diodes for emergency operation |
DE20006832U1 (en) | 2000-04-13 | 2000-06-29 | Spectral Gesellschaft für Lichttechnik mbH, 79111 Freiburg | Notice light |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2886911A (en) * | 1953-07-23 | 1959-05-19 | George K C Hardesty | Duo-panel edge illumination system |
FR2346795A1 (en) * | 1976-04-01 | 1977-10-28 | Regie Autonome Transports | Glazed illuminated display panel - contains as diffusor a surface-treated highly refractive transparent plate, pref. of PMMA, lit from the edge |
DE3223706C2 (en) * | 1982-06-25 | 1989-03-02 | Gerhard Dipl.-Phys. 8702 Himmelstadt De Karl | |
US4949489A (en) * | 1987-12-28 | 1990-08-21 | Rudell Elliot A | Edge-lit multiple image display device |
-
1992
- 1992-02-20 DE DE9218854U patent/DE9218854U1/en not_active Expired - Lifetime
- 1992-02-20 DE DE4205136A patent/DE4205136A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2886911A (en) * | 1953-07-23 | 1959-05-19 | George K C Hardesty | Duo-panel edge illumination system |
FR2346795A1 (en) * | 1976-04-01 | 1977-10-28 | Regie Autonome Transports | Glazed illuminated display panel - contains as diffusor a surface-treated highly refractive transparent plate, pref. of PMMA, lit from the edge |
DE3223706C2 (en) * | 1982-06-25 | 1989-03-02 | Gerhard Dipl.-Phys. 8702 Himmelstadt De Karl | |
US4949489A (en) * | 1987-12-28 | 1990-08-21 | Rudell Elliot A | Edge-lit multiple image display device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19746854A1 (en) * | 1997-10-23 | 1999-05-12 | Willing Gmbh Dr Ing | Escape indication light with light emitting diodes for emergency operation |
DE20006832U1 (en) | 2000-04-13 | 2000-06-29 | Spectral Gesellschaft für Lichttechnik mbH, 79111 Freiburg | Notice light |
Also Published As
Publication number | Publication date |
---|---|
DE4205136A1 (en) | 1993-08-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102015000071B4 (en) | Cover of a vehicle roof with a lighting device | |
DE69229675T2 (en) | DISPLAY PANEL FOR LIGHT SIGNS | |
DE3633203A1 (en) | LIGHT EMISSION DIODES (LED) - DISPLAY DEVICE | |
DE2405829B2 (en) | ELECTROLUMINESCENT SEMI-CONDUCTOR COMPONENT AND PROCESS FOR ITS MANUFACTURING | |
DE3612296C2 (en) | ||
DE4339274A1 (en) | Disc shaped lighting unit with uniform light output | |
DE9218854U1 (en) | Light guide disc with interchangeable transparency | |
DE3218010A1 (en) | INSTRUMENT CARRIER FOR MOTOR VEHICLES | |
DE2906022A1 (en) | LIGHT SURFACE, SUCH AS LIGHT WALL, LIGHT SIGN OR LIGHT SIGN | |
EP2709088B1 (en) | Lamp | |
DE69117060T2 (en) | FLUORESCENT ADHESIVE FILM | |
DE3716956A1 (en) | DISPLAYBOARD | |
CH678466A5 (en) | Solar panel module - has surface cover that provides uniform appearance | |
DE3113773A1 (en) | Display device with uniform illumination of information panels | |
DE3302156A1 (en) | LIGHTING DEVICE FOR A TRANSMISSIVELY OPERABLE PASSIVE DISPLAY | |
DE740968C (en) | Leuchtschlld | |
DE9302433U1 (en) | Arrangement for illuminating background areas | |
DE4432515A1 (en) | Light guide with waveguides plates of polymerides having different refractive indices | |
DE8632415U1 (en) | Illumination device for an LCD display | |
DE60129512T2 (en) | Lighting unit suitable as scoreboard lighting or as a lamp for motor vehicles | |
DE19841888A1 (en) | Filament | |
AT405807B (en) | Number plate having illuminated licence numbers | |
DE19507902A1 (en) | Edge-illuminated sign with long-persistence white reflecting coating | |
DE29920334U1 (en) | Lighting device | |
EP1403842A2 (en) | Printed optical signaller from transparent plastics for the control panel display member of a household appliance |