EP1232363B2 - Anti-dazzling transparent screen for illuminants - Google Patents
Anti-dazzling transparent screen for illuminants Download PDFInfo
- Publication number
- EP1232363B2 EP1232363B2 EP00993114A EP00993114A EP1232363B2 EP 1232363 B2 EP1232363 B2 EP 1232363B2 EP 00993114 A EP00993114 A EP 00993114A EP 00993114 A EP00993114 A EP 00993114A EP 1232363 B2 EP1232363 B2 EP 1232363B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- prism
- illuminated body
- prisms
- prismatic film
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
Abstract
Description
Die Erfindung betrifft ein Entblendungstransparent für langgestreckte Leuchtkörper, welches zur Entblendung eines Abstrahlsektors des Leuchtkörpers den Leuchtkörper über dessen Länge überdeckt, gemäß der im Oberbegriff des Anspruchs 1 angegebenen Gattung.The invention relates to a Verblendungstransparent for elongated luminous body, which covers the illumination of the body over the length thereof for glare of a radiation sector of the filament, according to the species specified in the preamble of
Bei Raumbeleuchtungen, insbesondere bei Bürobeleuchtungen mit den üblicherweise geforderten hohen Leuchtdichten, ist die Lichtquelle aus der Position eines Arbeitsplatzes so zu entblenden, daß keine Störung beim Blick zur Arbeitsvorlage im Gesichtsfeld des Arbeitenden durch Blendung eintritt. Um eine behagliche Raumbeleuchtung zu erhalten, sind Maßnahmen erförderlich, um die vom Arbeitenden wahrgenommenen, durch die Lichtquelle entstehenden Leuchtdichten zu ändern. Insbesondere sind bei Büroarbeitsplätzen, die mit Bildschirmen ausgestattet sind, Direktblendungen und Reflexblendungen zu vermeiden. Direktblendung tritt dabei auf, wenn beim Blick zur Arbeitsfläche, beispielsweise Bildschirm oder Papiervorlage, im Gesichtsfeld große Helligkeit erzeugt wird. Grundsätzlich muß dabei ein direkter Blick auf den Leuchtkörper ausgeschlossen werden. Bei langgestreckten Leuchtkörpern sind Entblendungsmaßnahmen in Querrichtung, teilweise auch in Längsrichtung des Leuchtkörpers bekannt, bei denen der Abstrahlwinkel des Leuchtkörpers durch herabgezogene Gehäusewände eines den Leuchtkörper aufnehmenden Gehäuses erreicht wird. Dabei sind diejenigen Arbeitsplätze blendfrei, die außerhalb des Abstrahlsektors des Leuchtkörpers liegen.In room lighting, especially in office lighting with the usually required high luminance, the light source from the position of a workplace is so entblenden that no disturbance occurs when glancing at the working template in the field of vision of the worker. In order to obtain a comfortable room lighting, measures are necessary to change the perceived by the working, resulting from the light source luminance. In particular, in office workplaces equipped with screens, direct glare and reflected glare are to be avoided. Direct glare occurs when you look at the work surface, such as screen or paper template, in the field of high brightness is generated. Basically, a direct view of the luminous element must be excluded. For elongated luminaires are glare reduction measures in the transverse direction, in part also known in the longitudinal direction of the luminous element, in which the emission angle of the luminous element is achieved by pulled-down housing walls of a housing receiving the luminous element. These jobs are glare-free, which are outside the radiating sector of the filament.
Zur Entblendung des Leuchtkörpers innerhalb des Abstrahlsektors sind Entblendungstransparente bekannt, welche aus lichtdurchlässigem Material bestehen und den Leuchtkörper über dessen Länge überdecken. Aus der
Zweck der Entblendung von einer Prismenfolie umgeben ist. Die Prismen sind dabei parallel nebeneinander liegend angeordnet und verlaufen parallel zur Gehäuselängsachse. Auf der konzentrisch zur Stablichtquelle angeordneten Folie sind die Prismen in Form eines gleichschenkligen Dreiecks ausgebildet und symmetrisch angeordnet, wobei um den zylindrischen Prismenkörper ein transparentes Schutzrohr gelegt ist. Die radial von der Stableuchte abgestrahlten Lichtstrahlen und die unmittelbaren Nachbarstrahlen treten dabei etwa senkrecht durch die Prismenbasis in das jeweilige Prisma ein und werden von den Prismenflächen, die den Schenkeln des rechtwinkligen Prismenquerschnittes reflektiert. Auf diese Weise werden die Radialstrahlen, die von allen abgestrahlten Lichtstrahlen am intensivsten sind, in die Leuchtquelle zurückgeworfen und dort absorbiert, so daß mit dieser bekannten Anordnung eine Entblendung nur mit enormen Lichtverlusten erreichbar ist.Purpose of glare is surrounded by a prismatic film. The prisms are arranged parallel next to each other and parallel to the housing longitudinal axis. On the film arranged concentrically to the bar light source, the prisms are in the form of an isosceles triangle and arranged symmetrically, wherein a transparent protective tube is placed around the cylindrical prism body. The rays of light radiated radially from the fluorescent tube and the immediate neighboring rays enter the respective prism approximately perpendicularly through the prism base and are reflected by the prism surfaces, which are reflected by the legs of the rectangular prism cross section. In this way, the radial rays, which are most intense of all radiated light rays, thrown back into the light source and absorbed there, so that with this known arrangement glare can only be achieved with enormous light losses.
Aus der
Ein röhrenförmiger Entblendungskörper ist auch aus der
Aus der
Die
Die
Des weiteren sind Prismenanordnungen zur Lichtleitung in einem Rohr bekannt. Bei dem Lichtleiter nach der
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, das gattungsgemäße Entblendungstransparent derart weiterzubilden, daß eine völlig blendfreie und für den Raumeindruck gleichmäßige Raumausleuchtung mit möglichst hoher Leuchtintensität erfolgt.The present invention has for its object to further develop the generic Entblendungstransparent such that a completely glare-free and uniform for the room impression room illumination with the highest possible luminous intensity.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved with the features of
Erfindungsgemäß wird eine gleichmäßige Lichtabstrahlung vom Entblendungstransparent erreicht durch eine derartige Anordnung der Prismen relativ zum Leuchtkörper, daß an mindestens einer der Prismenflächen, die auf diese Prismenfläche auftreffenden Lichtstrahlen total reflektiert werden. Das Entblendungstransparent wird dabei von einem Teil der in die Prismen eintretenden Lichtstrahlen durchdrungen, während der andere Teil der eingetretenen Strahlenbündel durch Totalreflexion zurückgeworfen wird. So wird das von der Leuchtquelle radial auf die Prismen abgestrahlte Lichtbündel gestreut. Mit der Ausrichtung der Prismen längs des Leuchtkörpers wird insbesondere auch in den seitlichen Bereichen des Leuchtkörpers eine vollständige Entblendung erreicht und der Raum gleichmäßig ausgeleuchtet. Die Prismen sind dabei entsprechend ihrer Querschnittsform und dem Brechungsindex des Materials relativ zum Leuchtkörper so anzuordnen, daß durch Totalreflexion an einer Prismenfläche Teilbündel der auftreffenden Lichtstrahlen vom direkten Durchtritt des Transparentes abgehalten werden. Bei der Erfindung besteht das Transparent aus einer Prismenfolie mit einseitig prismatischer Oberfläche, welche abdeckend vor dem Leuchtkörper angeordnet wird. Durch Wölbung der Prismenfolie um den Leuchtkörper können die Prismen auf einfache Weise in die vorgesehene Lage gebracht werden.According to the invention a uniform light emission from the Entblendungstransparent is achieved by such an arrangement of the prisms relative to the luminous element that at least one of the prism surfaces, which are totally reflected on this prism surface incident light rays. The Entblendungstransparent is thereby penetrated by a part of the entering into the prisms light rays, while the other part of the occurred radiation beam is reflected by total reflection. Thus, the light beam radially radiated from the light source to the prisms is scattered. With the orientation of the prisms along the luminous element, a complete glare reduction is achieved, and the room is evenly illuminated, especially in the lateral areas of the luminous element. The prisms are to be arranged according to their cross-sectional shape and the refractive index of the material relative to the luminous element so that partial beams of the incident light beams are prevented from direct passage of the transparency by total reflection on a prism surface. In the invention, the transparency of a prismatic film with one-sided prismatic surface, which is arranged to cover the luminous body. By arching the prismatic film around the luminous body, the prisms can be easily brought into the intended position.
Zweckmäßig ist die dem Leuchtkörper zugewandt liegende Seite des Entblendungstransparentes aus im wesentlichen ebenen Basisflächen der Prismen gebildet, wobei die Totalreflexion an einer der Primenflächen auf der jenseits des Leuchtkörpers liegenden Seite des Transparentes erfolgt. Die total reflektierten Lichtbündel werden vom Austritt aus den Prismen jenseits des Leuchtkörpers abgehalten. Entsprechend der Querschnittsform der Prismen, das heißt der Breite der Basisflächen und der winkligen Ausrichtung der hervorstehenden Prismenflächen auf der prismatischen Oberfläche ist die Prismenfolie in einem solchen Abstand zum Leuchtkörper anzubringen, daß die angestrebte Totalreflexion an den Prismenflächen entsteht. Vorteilhaft weisen die vorgesehene Lage gebracht Querschnitt auf, wobei die die Prismen einen dreieckigen Querschnitt auf, wobei die Basisfläche der Prismen der Grundseite des Dreieckquerschnitts entspricht und dem Leuchtkörper zugewandt liegt. Dabei wird von dem durch die Basisfläche eintretenden Lichtbündel der Teil, der auf eine der Schenkelflächen des Prismas auftrifft, total reflektiert, während das auf die andere Schenkelfläche des Dreieckprismas auftreffende Lichtbündel unter Ablenkung das Entblendungstransparent durchstrahlt. Die Schenkelflächen entsprechen den Dreieckseiten des Prismenquerschnitts, welche abgewinkelt zur Grundseite liegen.Suitably, the side of the Entblendungstransparentes facing the luminous body is formed from substantially flat base surfaces of the prisms, wherein the total reflection takes place at one of the priming surfaces on the side lying beyond the luminous body of the transparency. The totally reflected light bundles are prevented from exiting the prisms beyond the luminous element. Corresponding to the cross-sectional shape of the prisms, that is, the width of the base surfaces and the angular orientation of the protruding prism surfaces on the prismatic surface, the prism sheet is to be positioned at a distance from the lamp such that the desired total reflection at the prism surfaces is achieved. Advantageously, the intended position brought brought about cross-section, wherein the prisms a triangular cross-section, wherein the base surface of the prisms of the base side of the triangular cross section corresponds and faces the filament. In this case, of the light bundle entering through the base surface, the part which impinges on one of the limb surfaces of the prism is totally reflected, while the light bundle incident on the other limb surface of the triangular prism penetrates the glare-deflecting transparent under deflection. The leg surfaces correspond to the triangle sides of the prism cross section, which are angled to the base side.
Besonders vorteilhaft weisen die Prismen die Form eines gleichschenkligen Dreiecks auf, wobei durch Wölbung der Prismenfolie die Abstrahlwinkel des Entblendungstransparentes bedarfsweise einstellbar sind. Dabei wird es als vorteilhaft gesehen, wenn die total reflektierten Lichtbündel neben die Achse des Leuchtkörpers zurückgeworfen werden. Die Prismen mit der Querschnittsform eines gleichschenkligen Dreiecks können durch geeignete Wölbung einfach in die vorgesehene Lage gebracht werden, in der sich an einer der Kathetenflächen eine Totalreflexion ergibt, wenn die Basisflächen der einzelnen Prismen jeweils in einem von 90° abweichenden Winkel zu den auf das jeweilige Prisma auftreffenden Lichtstrahlen liegen.Particularly advantageously, the prisms have the shape of an isosceles triangle, wherein the radiation angle of the Entblendungstransparentes are adjusted as required by curvature of the prismatic film. It is considered advantageous if the totally reflected light bundles are reflected back next to the axis of the filament. The prisms with the cross-sectional shape of an isosceles triangle can be easily brought by appropriate curvature in the intended position, in which at one of the catheter surfaces a Total reflection results when the base areas of the individual prisms each lie at an angle other than 90 ° to the light rays striking the respective prism.
Ausführungsbeispiele der Erfindung sind nachstehend anhand der Zeichnung näher erläutert. Es zeigen:
-
Fig. 1 eine Ansicht einer Leuchte mit einem erfindungsgemäßen Entblendungstransparent, -
Fig. 2 einen Querschnitt einer Leuchte mit einem erfindungsgemäßen Entblendungstransparent, -
Fig. 3 bis Fig. 6 Strahlengänge an einem einzelnen Prisma in unterschiedlichen Winkellagen des Prismenquerschnittes zum Leuchtkörper, -
Fig. 7 eine Darstellung der Winkelbeziehungen der Strahlengänge, -
Fig. 8 eine Darstellung der Strahlengänge bei zwei benachbarten Prismenstrahlengängen, -
Fig. 9 und Fig. 10 schematische Darstellungen zur Bildung der Transparentgeometrie bei einer gewölbten Folie, -
Fig. 11 undFig. 12 Querschnitte durch den Leuchtkörper und die Strahlengänge der auf die Prismenfolie auftreffenden Lichtstrahlen.
-
Fig. 1 a view of a lamp with a Entblendungstransparent invention, -
Fig. 2 a cross section of a lamp with a Entblendungstransparent invention, -
Fig. 3 to Fig. 6 Beam paths on a single prism in different angular positions of the prism cross section to the luminous element, -
Fig. 7 a representation of the angular relationships of the beam paths, -
Fig. 8 a representation of the beam paths at two adjacent prism beam paths, -
FIGS. 9 and 10 schematic representations for the formation of the transparent geometry in a curved foil, -
Fig. 11 andFig. 12 Cross sections through the luminous element and the beam paths of the incident on the prismatic light rays.
Die Gehäuseträger 22 sind auf der oben, d. h. gegenüber der Prismenfolie 1 liegenden Seite mit Distanzelementen 20 versehen, welche ein Gehäusedach 17 tragen. Das Gehäusedach 17 ist transparent ausgebildet. Das Gehäusedach 17, die Gehäuseträger 22 und der Gehäuseboden 18 mit der darin befindlichen Prismenfolie 1 sind derart zueinander angeordnet, daß zwischen dem Gehäusedach 17 und dem Gehäuseboden 18 ein Luftspalt 19 gebildet ist. Durch den Luftspalt 19 erfolgt ein Luftaustausch zwischen dem Gehäuseinnenraum und der Umgebung der Leuchte 7, wobei die Luft zirkulieren kann, ohne daß Partikel von oben in den Gehäusespalt 19 fallen können. Über die Länge der Leuchte 7 sind mehrere Distanzelemente 20 vorgesehen, an denen das Gehäusedach 17 jeweils mit Spannschellen 21 oder ähnlichem befestigt sind. Die rechte Seite der Zeichnungsfigur zeigt einen Schnitt auf Höhe eines Distanzelementes 20, während auf der linken Hälfte ein Schnitt auf einer zwischen zwei Distanzelementen 20 liegenden Querebene der Leuchte 7 gezeigt ist, wobei der Luftspalt 19 deutlich wird.The housing supports 22 are on the top, d. H. opposite the
Die
Der Einfluß des Neigungswinkels der zur Totalreflexion auftreffender Lichtstrahlen vorgesehenen Schenkelfläche gegenüber der Basisfläche wird nachfolgend anhand der
In dem bevorzugten Winkelbereich der Prismenquerschnitte 15°≤α≤75° gilt die daraus abgeleitete Gleichung:
Mit den Bezeichnungen:
- α:
- Prismawinkel zwischen (linkem) Prismaschenkel und Basis
- ε:
- Einfallswinkel des Lichtes bezogen auf die Basisneigung
=δq-δb, wobei
δq: die Neigung des einfallenden Strahls zur Horizontalen
δb: die Neigung der Basis zur Horizontalen - n:
- Brechungsindex des Prismas
- αtg:
- Brechungswinkel, genügt der Gleichung:
n sin (αtg)=1.
- α:
- Prism angle between (left) prismatic skeleton and base
- ε:
- Incidence angle of the light relative to the base inclination
= δ q -δ b , where
δ q : the inclination of the incident beam to the horizontal
δ b : the inclination of the base to the horizontal - n:
- Refractive index of the prism
- α tg :
- Angle of refraction, satisfies the equation:
n sin (α tg ) = 1.
In der Darstellung der
In der Prismenfolie zur Entblendung der Leuchte wird die Wölbung der Folie derart gewählt, daß die einzelnen Prismen jeweils derartig zum Leuchtkörper geneigt angeordnet sind, daß durch Totalreflexion die gewünschte Entblendung bzw. die gewünschte Lichtverteilungskurve der Leuchtkörper erreicht wird. Die Neigungen der einzelnen Prismen können dabei unterschiedlich sein, wobei jedoch jeweils unter Berücksichtigung der Prismenlänge und des jeweiligen Abstandes zum Leuchtkörper die Einfallswinkel auf die Schenkelflächen innerhalb der Prismen im Winkelbereich der Totalreflexion liegen. Der Neigungswinkel der Prismen sind in Umfangsrichtung der Prismenfolie um den Leuchtkörper jeweils gegenüber dem vorausgehenden Prisma erhöht. Die Zunahme des Neigungswinkels zwischen den Prismen kann dabei etwa im Winkelbereich von 1° bis 2° liegen.In the prism sheet to glare the lamp, the curvature of the film is chosen such that the individual prisms are each arranged such inclined to the luminous body that the desired glare or the desired light distribution curve of the luminous body is achieved by total reflection. The inclinations of the individual prisms can be different, but in each case, taking into account the prism length and the respective distance to the luminous element, the angles of incidence on the femoral surfaces within the prisms are in the angular range of total reflection. The angle of inclination of the prisms are increased in the circumferential direction of the prism sheet around the luminous element in each case with respect to the preceding prism. The increase in the angle of inclination between the prisms can be approximately in the angular range of 1 ° to 2 °.
Eine vorteilhafte Wölbungskontur der Prismenfolie, in der der Brechungsbereich der Prismen optimal ist, ist in
Die Strahlengänge bei einer ähnlich
Durch die beschriebene Wölbung der Prismenfolie 1 werden die total reflektierten Lichtstrahlen 14 in einem abseits des Leuchtkörpers 2 liegenden Raumabschnitt hinter der Folie 1 zurückgeworfen, wodurch eine weitere Entblendung der Leuchte 2 erfolgt. Desweiteren können Teilstrahlen der total reflektierten Lichtbündel 14 auf dem Wege der Brechung an dem jeweils anderen Schenkelfläche der Prismen in einem Winkelbereich εtrg1 als Streulicht auf der jenseits des Leuchtkörpers 2 liegenden Seite der Prismenfolie 1 in den zu beleuchtenden Raum abgestrahlt werden. In den beleuchteten Raum werden daher mit günstiger Streuwirkung Lichtstrahlen mit unterschiedlichsten Ausrichtungen abgestrahlt. Eine solche Anordnung der Prismen kann vorteilhaft durch eine spiegelsymmetrische Wölbung der Prismenfolie wie in
Die Leuchtstärke der Prismenfolie ist über die gesamte Folienoberfläche homogen, wobei aus sämtlichen Blickwinkeln auf die Prismenfolie ähnliche Leuchtdichten einsehbar sind. Das gestreute Licht ist dabei sichtbar, ruft jedoch keine Blendung hervor.The luminosity of the prismatic film is homogeneous over the entire surface of the film, with similar luminances being visible from all viewing angles on the prism sheet. The scattered light is visible, but does not cause glare.
Claims (9)
- Elongate illuminated body with anti-dazzle transparent screen, which covers the illuminated body (2) across its length in order to prevent the dazzling effect of a radiating sector (α) of the illuminated body (2), the surface of the transparent screen being formed by elongate prisms (10) lying adjacent to one another more or less parallel and oriented essentially alongside the illuminated body (2), the transparent screen being made from a prismatic film (1) with a prismatic surface on one side and the prismatic film (1) is disposed around the illuminated body (2) in a cambered arrangement, the prisms (10) having a base surface (8) and lateral surfaces (11, 12) and, with base surfaces (8) directed towards the illuminated body (2), lie relative to the illuminated body (2) in such a way that, on at least one of the lateral surfaces (11, 12), the part of the light beams (13) entering the respective prism (10) hitting this lateral surface (11, 12) is totally reflected and, on at least one other lateral surface (11, 12), the part of the light beams (13) entering the prism (10) hitting this lateral surface (11, 12) penetrates, the prismatic film (1) being disposed in a cambered arrangement such that the distance (a) of the illuminated body (2) from the prismatic film (1) is shorter than the camber radius (W) of the prismatic film (1) in every area of the prismatic film (1).
- Illuminated body as claimed in claim 1,
characterised in that the ratio of the distance (a) of the illuminated body (2) from the prismatic film (1) to the respective camber radius (W) is essentially identical in every area of the prismatic film (1). - Illuminated body as claimed in claim 1 or 2,
characterised in that the side of the transparent screen (1) facing the illuminated body (2) is formed by flat base surfaces (8) of the prisms (10). - Illuminated body as claimed in one of claims 1 to 3,
characterised by a triangular cross-section of the prisms (10) in which the base side of the triangular cross-section corresponds to the base surface (8) of the prism (10). - Illuminated body as claimed in claim 4,
characterised in that the cross-sectional shape of the prisms (10) is that of an isosceles triangle. - Illuminated body as claimed in one of claims 1 to 5,
characterised in that the prismatic film (1) is disposed such that there is a total reflection on one of the respective lateral surfaces (11, 12) of the prisms (10). - Illuminated body as claimed in claim 5 or 6,
characterised in that the base surfaces (8) of the prisms (10) subtend an angle with the light beams (13) hitting the respective prism (10) that is not 90°. - Illuminated body as claimed in one of claims 1 to 7,
characterised by an optical path in the prism (10) which is such that the totally reflected light beams are at least partially deflected past the illuminated body (2) at a distance therefrom. - Illuminated body as claimed in one of claims 1 to 8,
characterised in that the illuminated body (2) is accommodated in a housing (3), the end walls (4) of which lying opposite one another in the longitudinal direction of the housing (3) are provided with a cambered edge (5), the contour of which matches the camber of the prismatic film (1) and on which the prismatic film (1) lies.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19955435A DE19955435C1 (en) | 1999-11-18 | 1999-11-18 | Anti-glare element for elongated illuminants |
DE19955435 | 1999-11-18 | ||
PCT/EP2000/011345 WO2001036867A1 (en) | 1999-11-18 | 2000-11-16 | Anti-dazzling transparent screen for illuminants |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1232363A1 EP1232363A1 (en) | 2002-08-21 |
EP1232363B1 EP1232363B1 (en) | 2006-10-11 |
EP1232363B2 true EP1232363B2 (en) | 2013-03-27 |
Family
ID=7929440
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00993114A Expired - Lifetime EP1232363B2 (en) | 1999-11-18 | 2000-11-16 | Anti-dazzling transparent screen for illuminants |
Country Status (6)
Country | Link |
---|---|
US (1) | US6863420B1 (en) |
EP (1) | EP1232363B2 (en) |
JP (1) | JP4733891B2 (en) |
AT (1) | ATE342471T1 (en) |
DE (2) | DE19955435C1 (en) |
WO (1) | WO2001036867A1 (en) |
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US7950833B1 (en) | 2008-06-17 | 2011-05-31 | Genlyte Thomas Group Llc | Splay frame luminaire |
US10302275B2 (en) | 2013-06-19 | 2019-05-28 | Bright View Technologies Corporation | Microstructure-based diffusers for creating batwing lighting patterns |
US10072816B2 (en) | 2013-06-19 | 2018-09-11 | Bright View Technologies Corporation | Microstructure-based optical diffusers for creating batwing and other lighting patterns |
US9765949B2 (en) | 2013-07-26 | 2017-09-19 | Bright View Technologies Corporation | Shaped microstructure-based optical diffusers for creating batwing and other lighting patterns |
DE102014215481A1 (en) * | 2014-08-05 | 2016-02-11 | Dürr Systems GmbH | Luminaire for a working environment, in particular for testing the surface of workpieces |
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DE4115836C2 (en) * | 1991-05-15 | 1999-11-25 | Jordan Reflektoren Gmbh & Co | Luminaire with a reflector arrangement and a dimming body |
DE19745844C2 (en) * | 1997-10-16 | 1999-12-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Electric lamp with a reflector and a refractor element |
KR100271672B1 (en) * | 1998-05-20 | 2000-11-15 | 구본준 | Sheet type optical device and backlight unit using the same |
-
1999
- 1999-11-18 DE DE19955435A patent/DE19955435C1/en not_active Expired - Lifetime
-
2000
- 2000-11-16 AT AT00993114T patent/ATE342471T1/en active
- 2000-11-16 JP JP2001538717A patent/JP4733891B2/en not_active Expired - Fee Related
- 2000-11-16 US US10/130,630 patent/US6863420B1/en not_active Expired - Lifetime
- 2000-11-16 EP EP00993114A patent/EP1232363B2/en not_active Expired - Lifetime
- 2000-11-16 WO PCT/EP2000/011345 patent/WO2001036867A1/en active Search and Examination
- 2000-11-16 DE DE50013614T patent/DE50013614D1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1612804A (en) † | 1925-03-11 | 1927-01-04 | Holophane Glass Company | Luminary |
US1941079A (en) † | 1931-09-05 | 1933-12-26 | Holophane Co Inc | Lighting apparatus employing rectilinear light sources |
DE1935927A1 (en) † | 1968-07-31 | 1970-02-05 | Goytisolo Ignacio Taltavull | Lighting device |
US5880886A (en) † | 1993-05-04 | 1999-03-09 | Milner; Peter James | Optical component suitable for use in glazing |
DE29608354U1 (en) † | 1996-05-08 | 1996-06-27 | Trilux Lenze Gmbh & Co Kg | Workplace lamp |
DE19712157A1 (en) † | 1997-03-22 | 1998-09-24 | Werner Rode | Device for assembling and dismantling removable rigid roof modules of motor vehicles |
Non-Patent Citations (1)
Title |
---|
HANDBUCH FÜR BELEUCHTUNG, vol. 4, - 1975, ESSEN, pages 98 - 110 † |
Also Published As
Publication number | Publication date |
---|---|
ATE342471T1 (en) | 2006-11-15 |
EP1232363A1 (en) | 2002-08-21 |
DE19955435C1 (en) | 2001-08-09 |
JP2003515239A (en) | 2003-04-22 |
DE50013614D1 (en) | 2006-11-23 |
EP1232363B1 (en) | 2006-10-11 |
WO2001036867A1 (en) | 2001-05-25 |
US6863420B1 (en) | 2005-03-08 |
JP4733891B2 (en) | 2011-07-27 |
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