EP1526329B1 - Reflektor für eine ringförmige Leuchtstofflampe - Google Patents

Reflektor für eine ringförmige Leuchtstofflampe Download PDF

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Publication number
EP1526329B1
EP1526329B1 EP03024290A EP03024290A EP1526329B1 EP 1526329 B1 EP1526329 B1 EP 1526329B1 EP 03024290 A EP03024290 A EP 03024290A EP 03024290 A EP03024290 A EP 03024290A EP 1526329 B1 EP1526329 B1 EP 1526329B1
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EP
European Patent Office
Prior art keywords
circular lamp
reflector
circular
plane
lamp
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Expired - Lifetime
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EP03024290A
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English (en)
French (fr)
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EP1526329A1 (de
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Jean-Pierre Pizziga
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Individual
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Individual
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Priority to DE60308030T priority Critical patent/DE60308030D1/de
Priority to EP03024290A priority patent/EP1526329B1/de
Priority to AT03024290T priority patent/ATE338247T1/de
Publication of EP1526329A1 publication Critical patent/EP1526329A1/de
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    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0058—Reflectors for light sources adapted to cooperate with light sources of shapes different from point-like or linear, e.g. circular light sources
    • 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
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular

Definitions

  • the invention relates to luminaires, such as luminaires for indoor or outdoor lighting, surfaces or premises, for industrial, commercial, tertiary or private use.
  • luminaires comprising a circular lamp, arranged in front of a reflector.
  • Fixtures with fluorescent tube (s) fluorescent (s) rectilinear (s) with two bases, hereinafter referred to as “tube (s) ", are commonly used for a long time especially for lighting premises.
  • These known luminaires usually comprise one or more tubes disposed in the vicinity of the ceiling of the room to be illuminated.
  • the tubes are generally placed in front of a reflector or partially surrounded by the reflector so as to concentrate the luminous flux towards a useful zone (the ground for example) of the local concerned.
  • a luminaire of this type is described in WO-97/43578.
  • the reflector in the form of an inverted V, comprises two profiled or curved wings whose intersection generates a line segment positioned above and in the longitudinal axis of the tube.
  • a constraint related to the use of the tubes is that the technical luminaires designed to direct the light to a useful area must have at least the length of the tube, which can make them bulky.
  • GB-575 817 describes a luminaire in which the tube is bent to form a circular or toroidal tubular lamp, that is to say having the shape of an annular torus.
  • the circular lamp is surrounded by a reflector shaped overturned half-torus.
  • This reflector has the property of reflecting the majority of incident rays of light that reach it, on an annular surface of the ground, while partially hiding the tube in view in order to meet particular comfort criteria, forming a zone circular center poorly lit.
  • the invention aims to constitute an inseparable assembly uniting a compact tube and a reflector of new design, capable of providing the luminaire that contains a useful light output comparable to the best tube luminaires.
  • the invention relates specifically to a reflector designed to optimize the luminous efficiency of a luminaire equipped with a circular lamp, the reflector being characterized in that it comprises a succession of annular facets, each of which has a circular edge in a plane, parallel to the plane of the circular lamp and which are oriented so that the rays of light reflected by them, generated by incident rays of the circular lamp, form with the axis of revolution of said circular lamp, an angle to maximum equal to a predetermined angle, hereinafter referred to as "target angle ", a definition of which will be provided later.
  • useful luminous efficiency of a luminaire means the ratio between the average illuminance level measured on the intended useful plane and the amount of energy required to obtain it.
  • the reflector according to the invention is intended for a circular lamp.
  • the term " circular lamp" is intended to mean a crown of shaped light circular or similar.
  • the luminous crown usually comprises a curved tube forming a torus, that is to say a solid of revolution generated by a circle which rotates about a straight line in its plane, and which does not cut it.
  • the invention is however not limited to bent tubes torus-shaped and applies equally to any type of light corona. It applies in particular to the light crowns formed of a succession of individual sources of light, powered by electrical or non-electrical energy, for example electric light bulbs.
  • the operating mode of the circular lamp is not critical. It may be indifferently a circular incandescent lamp, a circular arc lamp, a circular luminescent lamp, a circular lamp fluorescent wall, or any suitable light source.
  • the crown of light is circular in shape or similar. It is meant by the adjective “assimilated” that the shape of the crown may deviate from the strictly circular shape and have for example a polygonal or ovoid shape, regular or irregular.
  • plane of the lamp designates the geometric plane defined by the circular geometric axis of the circular lamp.
  • axis of revolution of the lamp designates the rectilinear geometric axis passing through the center of the circular lamp, perpendicular to the plane of the circular lamp.
  • discoidal space designates the cylindrical space that fits inside the annular torus constituting the circular lamp.
  • the plane of the circular lamp may be horizontal, vertical or oblique.
  • the circular lamp is usually arranged horizontally in the vicinity of the ceiling of the room and its plane is then substantially horizontal.
  • the invention also applies to luminaires in which the circular lamp occupies another position, for example a vertical position or an oblique position. This is particularly the case when the luminaire is arranged on a vertical wall or on a tower or when it is used as a source of lighting on mobile machinery or when it is portable.
  • the " technical reflector" which, associated with the circular lamp, is the subject of the patent has for mission to reflect to a useful area to illuminate, the incident light rays emitted by the circular lamp and reaching it
  • useful area to be illuminated means a surface considered as plane, which is arranged facing the circular lamp and which crosses its axis of revolution.
  • An " incident ray” is, by convention, a rectilinear ray of light, supposed to come from the circular axis of the circular lamp.
  • a " reflected ray” is, by convention, a rectilinear ray of light from the reflector and resulting from an incident ray reaching it.
  • the reflector comprises a succession of annular facets which each have a circular edge in a common plane, parallel to the plane of the circular lamp. Subsequently, this plan common will be referred to as " reflector plane ".
  • the aforementioned annular facets are inclined relative to the plane of the reflector, forming frustoconical surfaces. The angle of inclination of these " inclined facets " is calculated according to the direction sought for the rays reflected by them.
  • the inclined facets can be obtained by any suitable means. They can be isolated facets or formed by grooves carved in a plane disk forming the plane of the reflector. Between the inclined facets, the reflector can generally include " flat circular facets ". These are usually located in the plane of the reflector. However, nothing prevents one or more of them being located in another plane, parallel to the plane of the reflector.
  • flatness modification is meant the digging of grooves or the elevation of planes with respect to the plane of the reflector, in order to form the inclined facets.
  • digging and “elevation” are used here for purely pictorial purposes and do not prejudge the method to be used to obtain the results. It is the material retained for the realization of the reflector which determines the means of shaping to use.
  • the specular face or face facing the circular lamp thus sees its flatness modified by grooves or concentric growths, whenever the angle of attack of an incident ray must be modified to generate a reflected ray inside the circular lamp. the target angle (a definition of which will be provided later), as well as in situations of inter-reflections so as to make useful the reflected rays.
  • the facets of the reflector according to the invention are made of a material capable of reflecting the electromagnetic radiation of the visible spectrum. It is generally made of a material whose specular finish has a high reflectivity.
  • the original shape of the reflector is that of a disc whose plane is parallel to the plane of the circular lamp. There is nothing to prevent, however, that, to adapt it to functional, decorative, aesthetic, modular or other constraints, the circle of this disc is inscribed in a different geometrical figure, whether it be oval, polygonal or whatever.
  • the "target angle" which is the angle defined by the edge (or apothema) and the axis (or height) of this cone, is the one between the limits of which will be returned the maximum possible of the reflected rays deviated by the technical reflector.
  • the distance separating the plane of the reflector from the plane of the circular lamp is deemed to be known.
  • the method of construction of the luminaire and the accessories used are part of the elements that determine it.
  • each fraction of the technical reflector must participate in the achievement of the objective of obtaining from the reflector-lamp assembly, considered as a luminaire, the best possible useful light output.
  • the dimensions and the relative position of each of the components and the chosen target angle will generate the modification of the plane of the reflector in a series of concentric circular planes, parallel or oblique to the plane of the circular lamp.
  • the central part of the reflector, in the form of a conical (tron) assembly, will have the task of intercepting and orienting the incident light rays of a part of the discoidal space.
  • the position of the facets and their orientation are arranged such that the aforementioned reflected rays are outside the circular lamp.
  • the circular lamp does not hinder the propagation of the reflected rays to the useful area.
  • At least a portion of the facets are symmetrical with respect to a cylindrical surface generated by the circular geometric axis of the circular lamp.
  • the technical reflector preferably comprises at least one pair of inclined facets, which have a common circular edge corresponding to the intersection of the plane of the reflector and the aforementioned cylindrical surface.
  • the technical reflector comprises a frustoconical surface in the disc space defined by the circular lamp.
  • the small base of the frustoconical surface is located in the plane of the circular lamp and its large base is set back from said plane of the circular lamp and is located in the plane of the reflector.
  • the frustoconical surface advantageously makes, with the axis of revolution of the circular lamp, an angle such that at any incident ray of the circular lamp, which strikes said frustoconical surface, it corresponds to a ray reflected in a direction making, with said axis of revolution, an angle less than or equal to the target angle. This angle is preferably equal to 135 degrees.
  • the position of said frustoconical surface is preferably adjusted so that any ray reflected by it crosses the aforesaid discoidal space without striking the circular lamp.
  • the technical reflector comprises a conical surface in the disc space defined by the circular lamp.
  • the conical surface has its top on the axis of revolution of the circular lamp and its base in the plane of said circular lamp.
  • the invention also relates to a luminaire comprising a circular lamp and a technical reflector according to the invention, as defined above.
  • Figure 1 is a cross section along a plane passing through the axis of revolution of the circular lamp (and reflector);
  • FIG. 2 shows, on a larger scale, a detail of the luminaire of FIG. 1, equipped with a particular embodiment of the technical reflector according to the invention. It represents, for one of the multiple variants, the sequence of numerous corrections made to the initial flatness of the reflector.
  • a rotation of 360 ° around the axis of revolution of the reflector draws, in space, the shape of the specular face of the technical reflector and its circular lamp.
  • the radius of the reflector and the congestion of the cone on its axis of revolution which depend in particular on the dimensions of the luminaire which could contain it, are known to be known.
  • Figure 3 shows, on a large scale, a constructive detail of a variant of the reflector of Figures 1 and 2.
  • the luminaire represented in FIGS. 1 and 2 comprises a circular or toroidal annular lamp 1 and a technical reflector according to the invention, designated, as a whole, by the reference numeral 2.
  • the circular lamp 1 may for example consist of a tube fluorescent. It is arranged facing a useful area to be illuminated (not shown), defined by the solid angle X in the center of the core 1.
  • the angle X is the target angle defined above.
  • the circular lamp 1 is for example suspended from the ceiling of the room and its plane 7 is substantially horizontal.
  • the sectional view of the half-reflector 2 is shown on a larger scale in FIG. 2.
  • the reflector 2 comprises a plane disc 17 situated above the circular lamp 1 and parallel to the plane 7 thereof.
  • the disc 17 is hollowed out with grooves forming inclined annular facets DC, Dx, xF, Gy, yH, Hz, zI, Ja, aK 1 , K 1 -b, bK 2 , K 2 -c, cK 3 , K 3 - d, dK.
  • Two horizontal facets FG and IJ, located in the plane 17 of the reflector join the facets xF and Gy, on the one hand, and the facets zI and Ja, on the other hand.
  • the inclined facets YH and Hz have a common circular edge H, located at the intersection of the plane 17 and a fictitious cylinder whose axis coincides with the axis 11 of the circular lamp 1 and whose diameter equals the diameter the circular geometric axis passing through the point O of the circular lamp 1. These two facets are also inclined symmetrically with respect to said cylinder.
  • the frustoconical annular facet DC is connected to a horizontal annular facet CB, located in the plane 7 of the circular lamp 1. This is extended by a conical surface BA whose apex is located on the axis 11 of the circular lamp 1 .
  • the apex A of the conical surface AB is located on the axis of revolution 11 of the circular lamp 1. It is the apex of a right cone whose axis merges with the axis of revolution of the circular lamp 1 and forms with the edge AB an angle such that the radius reflected by the inclined plane AB, at the vertex A, passes through the axis of revolution 11 of the circular lamp and forms therewith the target angle X.
  • the circular edge B is located on the plane 7 of the circular lamp 1.
  • the circular edge C is also located on the plane 7 of the circular lamp 1.
  • the frustoconical annular surface CD forms an angle 135 degrees with the plane 17 of the reflector and its circular edge D is located on the plane 17 of the reflector, in the disc space 26.
  • the ray reflected by the facet CD at the edge D is tangent to the inner part of the tube 1 and is parallel to the edge 18 of the target angle X.
  • the edge F is located on the plane 17 of the reflector, in the disc space 26, and the ray reflected on the edge F of the horizontal facet FG deviates from the tube 1 parallel to the edge 19 of the angle target.
  • the edge G is located on the plane 17 of the reflector and the ray reflected by the facet F-G on the edge G is tangent to the inner part of the tube 1 and returned inside the target angle X.
  • the edge I is located on the plane 17 of the reflector and is symmetrical with the edge G with respect to the edge H.
  • the edge J is located on the plane 17 of the reflector and is symmetrical with the edge F with respect to the edge H.
  • the edge K is located on the plane 17 of the reflector, at its outer limit.
  • zones between two consecutive points can be divided into three categories: those whose flatness must not be modified (zones 1), those whose flatness must be modified by giving priority to the result to be obtained (zones 2) and those whose flatness must be modified by being able to give the priority to a choice of realization while respecting the result to be obtained (zones 3)
  • the edges A and B determine a zone 1.
  • Edges B and C determine a zone 1.
  • Edges C and D determine a zone 1.
  • Edges D and F determine zone 2 or 3.
  • Edges F and G determine a zone 1.
  • the edges G and H determine an area 2.
  • Edges H and I determine an area 2.
  • Edges I and J determine a zone 1.
  • the edges J and K determine a zone 3.
  • Type 1 zones are fully defined.
  • the zone of type 2 determined by the edges G and H is a zone of inter-reflections whose plane G-H must be split into two planes G-y and y-H which replace it.
  • the angle H of the triangle GHy is defined so that the ray reflected by the inclined plane H-y in the immediate vicinity of the point H is tangent to the inner part of the tube. At the point y of the triangle GHy, the ray reflected by the inclined plane H-y goes through G.
  • the zone of type 2 determined by the edges H and I is an inter-reflections zone whose plane H-I must be split into two planes H-z and z-I which replace it.
  • the angle in H of the triangle IHz is defined so that the ray reflected by the inclined plane H-z in the immediate vicinity of the point H is tangential to the outer part of the tube. At the point z of the triangle IHz, the ray reflected by the inclined plane H-z passes through I.
  • the type 3 zone defined by the J and K edges gives the reflector designer a wide range of possibilities to achieve the set objective. In fact, nothing makes it necessary to correct at once the angle of attack of the incident ray and the overall objective can be reached by a succession of partial corrections of smaller amplitude via a series of smaller areas. In a non-exhaustive way, the dimensions of the luminaire, its foreseeable applications, the material used for the realization of the reflector or any objective or subjective element considered useful can influence the number of zones that will be retained.
  • the chosen amplitude determines the distance between the edge a and the plane of the reflector.
  • the conical surface Oa passes through J.
  • the position of the edge K1 is defined so that the radius reflected by the inclined facet aK 1 on the circular edge K 1 is parallel to the edge 18 of the target angle X.
  • the circular edge K 1 which is substituted for the circular edge J allows via the axis Ob to define K 2 , then K 3 and so on until K n (not shown) which must be confused with the circular end K of the reflector.
  • a series of small areas is thus produced, the sum of the lengths of which must correspond to the distance JK (known) and whose amplitude or amplitudes must make it possible to respect the target angle (known).
  • JK distance
  • JK target angle
  • the resolution of a series of mathematical equations within the reach of those skilled in the art, makes it possible to determine the optimum number of these small areas and the optimum amplitudes and to define precisely the modifications to be made to the flatness of this area. part of the technical reflector.
  • zone determined by the edges D and F can be treated in two ways: zone 2 if the correction can or must be done once or zone 3 if the corrections can or must be multiplied to decrease the amplitude.
  • the zone DF of the reflector 2 is treated as a zone of the type 3.
  • the disk 17 is dug with grooves. forming inclined annular facets Fp, pE 1 , E 1 -q, qE 2 , E 2 -r, rE 3 , E 3 -s and sD.
  • the chosen amplitude determines the distance between the edge p and the plane 17 of the reflector.
  • the conical surface Op passes through F.
  • the position of the edge E1 is defined so that the radius reflected by the inclined facet pE 1 on the circular edge E 1 is parallel to the edge 19 of the target angle X.
  • the circular edge E1 which replaces the circular edge F, allows via the axis Oq to define E 2 , then E3 and so on. up to En (not shown) which must be confused with the circular edge D.
  • a series of small areas is thus produced, the sum of the lengths of which must correspond to the distance DF (known) and whose amplitude or amplitudes must make it possible to respect the target (known) angle.
  • the resolution of a series of mathematical equations within the reach of those skilled in the art, makes it possible to determine the optimum number of these small areas and the amplitudes optimum and precisely define the changes to be made to the flatness of this part of the technical reflector.
  • Tube Tubular fluorescent lamp rectilinear with two bases.
  • Technical luminaire Luminaire comprising at least one tube placed in front of a reflector or partially surrounded by it.
  • Compact tube Single-ended tube obtained by folding one or more times a tube on itself.
  • Luminous efficiency Ratio between the measured luminous flux and the amount of energy needed to produce it.
  • Useful light output Ratio between the average illuminance level measured on the intended useful plane and the amount of energy required to obtain it.
  • Plan of the lamp Geometric plane defined by the circular geometric axis of the circular lamp. Axis of revolution of the lamp Straight geometric axis passing through the center of the circular lamp , perpendicular to the lamp plane.
  • Facet inclined Frustoconical annular facet of the technical reflector which is inclined relative to the plane of the reflector .
  • Flat facet Annular facet of the technical reflector which is located in the plane of the reflector or in a plane parallel thereto. Modification of flatness Digging grooves or elevation planes relative to the plane of the reflector, in order to form the inclined facets .
  • Target angle Angle defined by the ridge (or apothema) and the axis (or height) of the cone of revolution whose vertex is on the axis of revolution of the circular lamp , in the center of the plane of the lamp and whose base is confuses with the useful area to illuminate.

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  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (12)

  1. Leuchtkörper, umfassend eine kreisförmige Lampe (1) und einen Reflektor (2), dadurch gekennzeichnet, dass der Reflektor eine Aufeinanderfolge von ringförmige Facetten (Fig. 2: C-D, D-x, x-F, J-a, a-K1, K1-b, b-K2, K2-C, c- K3, K3-d, d-K; Fig. 3: C-D, D-s, S-E3, E3-r, r-E2, E2-q, q-E1, E1-p, p-F, J-a, a-K1, K1-b, b-K2, K2-C, c- K3, K3-d, d-K) umfasst, die jeweils eine ringförmige Kante in der Ebene (17) des Reflektors parallel zur Ebene (7) der kreisförmigen Lampe (1) aufweisen und derart ausgerichtet sind, dass die von ihnen reflektierten Lichtstrahlen, die von den einfallenden Strahlen der kreisförmigen Lampe hervorgerufen werden, mit der Umdrehungsachse (11) der kreisförmigen Lampe einen Winkel bilden, der maximal gleich einem definierten Zielwinkel (X) ist.
  2. Leuchtkörper nach Anspruch 1, dadurch gekennzeichnet, dass die kreisförmige Lampe (1) die Form eines Torus hat.
  3. Leuchtkörper nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Position der vorgenannten Facetten und ihre Ausrichtung derart vorgesehen sind, dass die vorgenannten reflektierten Strahlen außerhalb der kreisförmigen Lampe (1) sind.
  4. Leuchtkörper nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass er ein Paar zusätzlicher ringförmiger Facetten (H-y und H-z) umfasst, die eine gemeinsame kreisförmige Kante (H) besitzen, die der Schnittlinie der Ebene (17) und einer virtuellen zylindrischen Fläche, die von der kreisförmigen geometrischen Achse (O) der kreisförmigen Lampe erzeugt wird, entspricht, wobei die zusätzlichen ringförmigen Facetten derart geneigt sind, dass die von ihnen reflektierten und von einfallenden Strahlen der kreisförmigen Lampe erzeugten Lichtstrahlen außerhalb der kreisförmigen Lampe sind.
  5. Leuchtkörper nach Anspruch 4, dadurch gekennzeichnet, dass die vorgenannten zusätzlichen ringförmigen Facetten (H-y und H-z) zur vorgenannten virtuellen zylindrischen Fläche symmetrisch sind.
  6. Leuchtkörper nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die vorgenannten Facetten von Rillen gebildet sind, die in einer Scheibe gekreuzt sind, die sich in der vorgenannten Ebene des Reflektors befindet.
  7. Leuchtkörper nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass er eine kegelstumpfartige (C-D) und konische Fläche (B-A) in dem scheibenförmigen Raum (26), der von der kreisförmigen Lampe (1) begrenzt ist, umfasst.
  8. Leuchtkörper nach Anspruch 7, dadurch gekennzeichnet, dass die konische Fläche (B-A) ihre Spitze (A) auf der Umdrehungsachse (11) der kreisförmigen Lampe (1) und ihre Basis (B) in der Ebene (7) der kreisförmigen Lampe hat.
  9. Leuchtkörper nach Anspruch 7, dadurch gekennzeichnet, dass die kegelstumpfartige Fläche (C-D) mit der Umdrehungsachse (11) der kreisförmigen Lampe (1) einen derartigen Winkel bildet, dass jedem einfallenden Strahl der kreisförmigen Lampe, der auf die kegelstumpfartige Fläche trifft, ein in eine Richtung reflektierter Strahl entspricht, die mit der Umdrehungsachse einen Winkel kleiner oder gleich dem vorgenannten Zielwinkel (X) bildet.
  10. Leuchtkörper nach Anspruch 9, dadurch gekennzeichnet, dass die kegelstumpfartige Fläche (C-D) idealerweise einen Winkel von 135 Grad mit der vorgenannten Umdrehungsachse (11) bildet.
  11. Leuchtkörper nach einem der Ansprüche 8 oder 10, dadurch gekennzeichnet, dass die konische Fläche (B-A) mit der Umdrehungsachse (11) der kreisförmigen Lampe (1) einen derartigen Winkel bildet, dass jedem einfallenden Strahl der kreisförmigen Lampe, der auf die konische Fläche trifft, ein in eine Richtung reflektierter Strahl entspricht, die mit der Umdrehungsachse einen Winkel kleiner oder gleich dem vorgenannten Zielwinkel (X) bildet.
  12. Leuchtkörper nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass die Position der kegelstumpfartigen Fläche (C-D) derart eingestellt ist, dass jeder von ihr reflektierter Lichtstrahl den vorgenannten scheibenförmigen Raum (26) durchquert.
EP03024290A 2003-10-23 2003-10-23 Reflektor für eine ringförmige Leuchtstofflampe Expired - Lifetime EP1526329B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE60308030T DE60308030D1 (de) 2003-10-23 2003-10-23 Reflektor für eine ringförmige Leuchtstofflampe
EP03024290A EP1526329B1 (de) 2003-10-23 2003-10-23 Reflektor für eine ringförmige Leuchtstofflampe
AT03024290T ATE338247T1 (de) 2003-10-23 2003-10-23 Reflektor für eine ringförmige leuchtstofflampe

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Application Number Priority Date Filing Date Title
EP03024290A EP1526329B1 (de) 2003-10-23 2003-10-23 Reflektor für eine ringförmige Leuchtstofflampe

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EP1526329A1 EP1526329A1 (de) 2005-04-27
EP1526329B1 true EP1526329B1 (de) 2006-08-30

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US2415635A (en) * 1944-05-26 1947-02-11 Eastman Kodak Co Illumination arrangement for photographic enlargers
FR1141825A (fr) * 1956-02-28 1957-09-09 Réflecteur torique multicourbe à équations coniques différentielles
DE2615446A1 (de) * 1976-04-09 1977-10-20 Zimmermann Kg Rudolf Stufenspiegel
US4280167A (en) * 1979-09-13 1981-07-21 Ellett Edwin W Operating room surgical lamp
US5062030A (en) * 1990-12-10 1991-10-29 Figueroa Luisito A Customized light reflector
US5832362A (en) * 1997-02-13 1998-11-03 The Procter & Gamble Company Apparatus for generating parallel radiation for curing photosensitive resin
IT1320063B1 (it) * 2000-05-02 2003-11-12 Fiat Ricerche Dispositivo di illuminazione.

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ATE338247T1 (de) 2006-09-15
EP1526329A1 (de) 2005-04-27
DE60308030D1 (de) 2006-10-12

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