EP3098504B1 - Réflecteur-projecteur câblé - Google Patents

Réflecteur-projecteur câblé Download PDF

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Publication number
EP3098504B1
EP3098504B1 EP15001354.8A EP15001354A EP3098504B1 EP 3098504 B1 EP3098504 B1 EP 3098504B1 EP 15001354 A EP15001354 A EP 15001354A EP 3098504 B1 EP3098504 B1 EP 3098504B1
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EP
European Patent Office
Prior art keywords
reflector
light
polygon
inlet end
rotation
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.)
Active
Application number
EP15001354.8A
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German (de)
English (en)
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EP3098504A1 (fr
Inventor
Simon Appelhans
Heinrich J. Gantenbrink
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bega Gantenbrink Leuchten KG
Original Assignee
Bega Gantenbrink Leuchten KG
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 Bega Gantenbrink Leuchten KG filed Critical Bega Gantenbrink Leuchten KG
Priority to EP15001354.8A priority Critical patent/EP3098504B1/fr
Priority to US15/094,149 priority patent/US9841164B2/en
Priority to CN201610293931.4A priority patent/CN106122844B/zh
Publication of EP3098504A1 publication Critical patent/EP3098504A1/fr
Application granted granted Critical
Publication of EP3098504B1 publication Critical patent/EP3098504B1/fr
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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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • 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
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/061—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being glass
    • F21V3/0615—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being glass the material diffusing light, e.g. translucent glass
    • 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
    • F21V7/0066—Reflectors for light sources specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified
    • 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
    • F21V7/04—Optical design
    • F21V7/046—Optical design with involute curvature
    • 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
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21Y2101/00—Point-like light sources

Definitions

  • a generic reflector comprises a light entry end, a light exit end with at least one substantially quadrangular light exit opening, an optical axis, and a reflector surface extending between the light entrance end and the light exit end, the reflector surface defining a polygon in a plane perpendicular to the optical axis.
  • Generic reflectors come u.a. in recessed spotlights, but also in other lights used.
  • the light exit opening is aligned concentrically to the optical axis of the reflector, and the optical axis is substantially completely surrounded by the reflector surface.
  • reflectors with a rectangular reflector surface are often used, wherein the four side surfaces of the reflector in the direction between the light entry end and the light exit end are curved in particular parabolic.
  • the reflector surface at the corners of the cross-sectional area is not continuous into one another.
  • the angle between the faces of the reflector surface is 90 °. This leads to inhomogeneities of the illuminance in the emitted cone of light.
  • the emitted light cone has a light intensity with sharp edges, wherein the shape of the light cone substantially corresponds to the shape of the reflector surface, if no aperture is arranged at the light exit end of the reflector or in the direction of the emitted light cone.
  • the inhomogeneities caused by the edges now cause the emitted light cone not a uniform illuminance, but areas with increased or decreased illuminance.
  • the reflector has a circular light exit opening and a reflector surface which shows a regular 48-sided polygon.
  • EP 0915 287 A2 a round reflector, wherein the reflector is provided inside with spirally formed reflector surfaces.
  • the light source a light bulb is used.
  • the US 7,441,927 discloses a lamp with individual facets extending spirally from the light entrance opening to the light exit opening.
  • a corresponding lamp is particularly suitable for the use of halogen lamps.
  • the invention offers the advantage that a twisted surface of revolution is created by the rotating polygon.
  • the inhomogeneities generated along the edge are thus no longer superimposed in one area of the emitted cone of light, but are distributed over several emission directions and are superimposed by light beams which have been reflected off the edges of the reflector surface.
  • the luminous intensity of the emitted light cone becomes more homogeneous overall.
  • the polygon also changes shape and size between the light entry end and the light exit end.
  • the corners of the rotating polygon define spirals on the reflector surface.
  • the polygon has more than four corners, and at the light exit end, a first transition region is formed, in which the polygon merges continuously into the shape of the light exit opening. Increasing the number of corners increases the angle between two adjoining surface sections, resulting in a reduction in the inhomogeneity of a corner. In the first transition region, the polygon can continue to rotate about the rotation axis.
  • the axis of rotation is also perpendicular to the plane of the polygon.
  • the reflector surface is a reflective coating of a reflector shell. It is also an alternative possible that the reflector shell consists of a reflective material and its inner, the optical axis facing surface is formed as a reflector surface.
  • the axis of rotation and the optical axis coincide. This makes it possible to realize symmetrical light cone shapes in a particularly simple manner. However, it is alternatively conceivable that the rotational axis and the optical axis do not coincide for the realization of other light cone shapes.
  • the light exit opening is square.
  • the light exit opening has a different quadrangular shape.
  • the quadrangular light exit opening may have curved edges. This allows the reflector to adapt to lighting tasks or design aspects.
  • the present invention further provides an arrangement with at least two reflectors according to the invention, wherein the light exit openings of the reflectors are arranged adjacent, and the rotations of the polygons of adjacent reflectors have an opposite direction of rotation.
  • the invention further provides a luminaire with a reflector according to the invention and a light source, wherein the light source is arranged at the light entry end of the reflector and comprises at least one LED.
  • the reflector according to the invention is particularly advantageous for lights with LEDs.
  • the edges of the polygon are curved.
  • the reflector can be easily adapted to lighting tasks.
  • the edges are convexly curved. This further improves the imaging properties of the reflector.
  • the outside of the reflector shell may be curved in particular convex.
  • the polygon is a point-symmetric polygon, and the center of symmetry lies on the axis of rotation. Accordingly, the polygon rotates about its center of symmetry. This makes it particularly easy to realize symmetrical light cone shapes.
  • the polygon is a point-symmetrical octagon with a 4-fold rotational symmetry.
  • even a small angle of rotation already has a particularly advantageous effect on the homogeneity of the illuminance, while at the same time the production costs and the number of discontinuities in the reflector surface are kept low.
  • the polygon rotates along the entire reflector surface between the light entry end and the light exit end.
  • the rotation of the polygon has a particularly effective effect on the homogeneity of the illuminance of the emitted light cone. If the reflector has a first transition region at the light exit end, the polygon can rotate to the beginning of the transition region or even within the transition region to the light exit end.
  • the angle of rotation swept from a corner of the polygon in a plane perpendicular to the axis of rotation by the rotation between the light entry end and the light exit end is greater than 15 °. From this angle of rotation, the rotation has a particularly advantageous effect on the homogeneity of the illuminance.
  • the angle of rotation of each corner is substantially 360 ° divided by the number of corners of the polygon.
  • the inhomogeneities of a corner are distributed over an area that extends to the starting point of the inhomogeneity caused by the next corner. At this angle of rotation so no inhomogeneities are available.
  • the reflector surface is parabolic in a plane parallel to the optical axis between the light entry end and the light exit end.
  • the reflector additionally has the refractive properties of a parabolic mirror. In this embodiment, it is particularly easy to realize parallel light cones.
  • the reflector has a light inlet opening at the light entry end.
  • a light source can be arranged in a particularly simple manner in the reflector, or introduce light in a particularly simple way in the reflector.
  • the reflector is flattened at the light entry end and the reflector surface opens at the flattened light entry end into a base surface.
  • the base surface formed by the flattened end, into which the reflector surface opens can have the shape of the polygon. Most preferably, the base and the plane spanned by the light exit opening are parallel.
  • the base surface is formed substantially quadrangular, and at the light entry end, a second transition region is formed, in which the polygon merges steadily into the shape of the base surface.
  • the shape of the base surface may have curved edges and / or the shape of the light exit opening. This results in a particularly aesthetic overall impression.
  • the polygon in the second transition region can continue to rotate about the axis of rotation.
  • the light exit opening and the base area are essentially square, and the polygon is a point-symmetrical octagon with a 4-fold rotational symmetry, wherein the reflector surface is designed to be parabolic in a plane parallel to the optical axis between the light entry end and the light exit end runs and the polygon between the base and the light exit opening along the entire reflector surface rotates such that the corners of the base pass into those corners of the octagon, which open at the centers of the edges of the light exit opening, and the centers of the edges the base surface in those corners of the octagon, which open in the corners of the light exit opening.
  • This design results in an improved illuminance regardless of the height of the reflector. In addition, there is a good overall aesthetic impression.
  • two different spiral shapes are defined on the reflector surface by the corners of the rotating octagon, with the first spirals extending from the centers of the corners of the base to the centers of the edges of the light exit aperture and the second spirals from the centers of the edges of the base extend the corners of the light exit opening.
  • edges of the base surface and the edges of the light exit opening are aligned parallel to each other. This results in a particularly aesthetic reflector.
  • the reflector is produced by means of injection molding.
  • the reflector according to the invention can be produced particularly easily.
  • the reflector shell is at least partially convex. As a result, the demolding of the reflector during injection molding is simplified.
  • a reflector body is first produced by means of injection molding and then applied to the inside of the reflector shell to form the reflector surface, a reflective layer.
  • the reflector according to the invention can be produced in a particularly simple and cost-effective manner.
  • the arrangement comprises four reflectors, which are arranged in a rectangle, wherein the opposite reflectors are of the same design.
  • the superposition of the invention homogeneous light cone of the individual reflectors results in a particularly homogeneous emitted light beam for the entire arrangement.
  • the luminaire comprises a diffuser element.
  • the diffuser element can be designed, for example, as a cover glass be and be arranged at the light exit opening. As a result, the illuminance of the emitted light cone can be further homogenized.
  • the Figures 1 and 2 show a reflector 1 according to the invention with a light entry end 2, a light exit end 3 and a reflector shell 7, which extends between the light entry end 2 and the light exit end 3.
  • a light exit opening 6 is formed at the light exit end 3.
  • the reflector surface 4 is formed on the inside of the reflector shell 7, the reflector surface 4 is formed.
  • the reflector has a flattened light entry end 2 with a base 8.
  • the base 8 is quadrangular, wherein the edges are convex.
  • a light inlet opening 5 is formed.
  • the reflector surface 4 surrounds the optical axis O of the reflector 1.
  • the light inlet opening 5 and the light exit opening 6 are formed square, and coaxially aligned with the optical axis O and parallel to each other.
  • the reflector 1 was produced by injection molding, in which case a reflector body comprising the reflector shell 7 was first produced, and then the reflector surface 4 was applied to the inside of the reflector shell 7 as a reflective coating.
  • the outside of the reflector shell 7 is convex.
  • the outer side follows the curvature of the reflector surface 4, so that the reflector shell 7 has a substantially constant wall thickness.
  • the reflector surface 4 defines an octagon.
  • the reflector surface 4 has a first transition region 12 at the light exit end 3 and a second transition region 13 at the light entry end 3.
  • the octagon 11 is continuous in the shape of the light inlet opening 5 and the light exit opening 6, respectively.
  • the octagon 11 rotates along the entire reflector surface 4 between the light entry end 2 and the light exit end 3 about an axis of rotation R, wherein the axis of rotation R coincides with the optical axis O.
  • the octagon 11 also rotates within the first transition region 12 and the second transition region 13.
  • the edges of the rotating octagon 11 define on the reflector shell 7 and on the reflector surface 4 spirals 9, 10.
  • the total angle of rotation of all corners is ⁇ 45 °.
  • the angle of rotation of each corner is therefore greater than 15 ° and corresponds to 360 ° divided by the number of corners.
  • the spirals 9 each extend from a center of the edges of the base 8 to a respective corner of the light exit opening 6.
  • the spirals 10 extend from one corner of the base 8 to a respective center of the edges of the light exit opening 6.
  • FIG. 3 shows the reflector of the FIG. 1 in section along the section line A.
  • the reflector surface 4 is formed parabolic in the illustrated embodiment.
  • Base 8 and light exit opening 6 are parallel to each other.
  • FIG. 4 shows the second transition region 13 of the reflector 1 of FIG. 3 in section along the axis B.
  • the octagon 11 is almost completely in the shape of the base 8 has gone over, and has in relation to the base 8 a small angle of rotation ⁇ of about 5 ° about the axis of rotation R.
  • FIG. 5 shows the reflector of the FIG. 3 along the section line C.
  • the polygon 11 defined by the reflector surface 4 is a point-symmetrical octagon 11 with a 4-fold rotational symmetry which rotates about its center of symmetry.
  • the edges of the octagon 11 are convex.
  • FIG. 6 shows the reflector of the FIG. 3 along the section line D.
  • the octagon 11 is still point-symmetrical and has a 4-fold rotational symmetry. However, the shape of the octagon 11 has changed them slightly, since the corners defining the spirals 9 to reach the corners of the light exit opening number 5 must travel a greater distance than the corners defining the spirals 10.
  • the angle of rotation ⁇ is now approximately 30 °.
  • FIG. 7 shows the first transition region 12 of the reflector of FIG. 3 along the section line E.
  • the octagon 11 continues to rotate and has almost completely transitioned into the shape of the light exit opening.
  • the rotation angle ⁇ is almost 45 °.
  • FIGS. 8 and 9 show an assembly 14 of 4 reflectors 1.15, the reflectors 15 to the reflector of Figures 1-7 correspond, but have an opposite sense of rotation.
  • the 4 Lichteintrittsenten 3 are adjacent in a plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)

Claims (11)

  1. Réflecteur (1) pour une lampe, notamment pour une lampe avec au moins une source de lumière à LED, comprenant une extrémité d'entrée de lumière (2), une extrémité de sortie de lumière (3) avec au moins une ouverture de sortie de lumière (6) sensiblement carrée, un axe optique (O), et une surface de réflecteur (4), qui s'étend entre l'extrémité d'entrée de lumière (2) et l'extrémité de sortie de lumière (3), la surface de réflecteur (4) définissant, au moins par secteurs, un polygone dans un plan perpendiculaire à l'axe optique (O), réflecteur
    dans lequel la surface de réflecteur (4) est conçue de manière telle que le polygone, entre l'extrémité d'entrée de lumière (2) et l'extrémité de sortie de lumière (3), tourne au moins par secteurs, autour d'un axe de rotation (R), qui est orienté parallèlement à l'axe optique (O),
    dans lequel, à l'extrémité d'entrée de lumière (2) du réflecteur (1), celui-ci est aplati, et la surface de réflecteur (4) débouche, au niveau de l'extrémité d'entrée de lumière (2) aplatie, dans une surface de fond (8),
    dans lequel l'ouverture de sortie de lumière (3) et la surface de fond (8) sont d'une configuration sensiblement carrée, et le polygone est un octogone (11) à symétrie centrale avec une symétrie de rotation d'ordre 4,
    et dans lequel la surface de réflecteur (4) est réalisée de façon à s'étendre de manière parabolique, dans un plan parallèle à l'axe optique (O), entre l'extrémité d'entrée de lumière (2) et l'extrémité de sortie de lumière (3), et le polygone tourne, entre la surface de fond (8) et l'ouverture de sortie lumière (3), le long de la totalité de la surface de réflecteur (4), de manière telle que les sommets de la surface de fond (8) se convertissent en sommets de l'octogone (11), qui débouchent au point milieu des côtés de la surface de l'ouverture de sortie de lumière (3), et les points milieu des côtés de la surface de fond se convertissent en sommets de l'octogone, qui débouchent dans les sommets de l'ouverture de sortie de lumière.
  2. Réflecteur (1) selon la revendication 1, caractérisé en ce que les côtés du polygone sont de configuration courbe.
  3. Réflecteur (1) selon la revendication 1 ou la revendication 2, caractérisé en ce que le polygone est d'une configuration à symétrie centrale, et le centre de symétrie se situe sur l'axe de rotation (R).
  4. Réflecteur (1) selon l'une des revendications précédentes, caractérisé en ce que l'angle de rotation balayé par un sommet du polygone dans un plan perpendiculaire à l'axe de rotation (R), par suite de la rotation entre l'extrémité d'entrée de lumière (2) et l'extrémité de sortie de lumière (3), est supérieur à 15°.
  5. Réflecteur (1) selon l'une des revendications précédentes, caractérisé en ce que l'angle de rotation de chaque sommet correspond sensiblement à 360° divisé par le nombre de sommets du polygone.
  6. Réflecteur (1) selon l'une des revendications précédentes, caractérisé en ce que la surface de réflecteur (4) est d'une configuration de forme parabolique dans un plan parallèle à l'axe optique (O), entre l'extrémité d'entrée de lumière (2) et l'extrémité de sortie de lumière (3).
  7. Réflecteur (1) selon l'une des revendications précédentes, caractérisé en ce que le réflecteur présente à son extrémité d'entrée de lumière (2), une ouverture d'entrée de lumière (5).
  8. Réflecteur selon l'une des revendications précédentes, caractérisé en ce que la surface de fond (8) est d'une configuration sensiblement carrée, et à l'extrémité d'entrée de lumière (2) est réalisée une deuxième zone de transition dans laquelle le polygone passe de manière continue à la forme de la surface de fond (8).
  9. Réflecteur (1) selon l'une des revendications précédentes, caractérisé en ce que le réflecteur est fabriqué par moulage par injection.
  10. Agencement comprenant au moins deux réflecteurs selon l'une des revendications 1 à 9, caractérisé en ce que les ouvertures de sortie de lumière (6) des réflecteurs (1) sont agencés de manière à être mutuellement voisines, et la rotation des polygones de réflecteur (1), voisins, présente un sens de rotation opposé.
  11. Lampe comprenant un réflecteur (1) et une source de lumière, caractérisée en ce que le réflecteur est réalisé selon l'une des revendications 1 à 9, et la source de lumière est agencée à l'extrémité d'entrée de lumière (2) du réflecteur (1) et comprend au moins une LED.
EP15001354.8A 2015-05-06 2015-05-06 Réflecteur-projecteur câblé Active EP3098504B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15001354.8A EP3098504B1 (fr) 2015-05-06 2015-05-06 Réflecteur-projecteur câblé
US15/094,149 US9841164B2 (en) 2015-05-06 2016-04-08 Twisted downlight reflectors
CN201610293931.4A CN106122844B (zh) 2015-05-06 2016-05-03 扭转的嵌顶灯反射器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15001354.8A EP3098504B1 (fr) 2015-05-06 2015-05-06 Réflecteur-projecteur câblé

Publications (2)

Publication Number Publication Date
EP3098504A1 EP3098504A1 (fr) 2016-11-30
EP3098504B1 true EP3098504B1 (fr) 2019-08-28

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Application Number Title Priority Date Filing Date
EP15001354.8A Active EP3098504B1 (fr) 2015-05-06 2015-05-06 Réflecteur-projecteur câblé

Country Status (3)

Country Link
US (1) US9841164B2 (fr)
EP (1) EP3098504B1 (fr)
CN (1) CN106122844B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN213577327U (zh) * 2020-10-16 2021-06-29 广州视源电子科技股份有限公司 反射片及具有该反射片的背光灯
JP2023016089A (ja) * 2021-07-21 2023-02-02 株式会社ジャパンディスプレイ 照明装置
JP2023037174A (ja) * 2021-09-03 2023-03-15 株式会社ジャパンディスプレイ 照明装置

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE102013201950A1 (de) * 2013-02-06 2014-08-07 Osram Gmbh Rasterleuchte mit Reflektorzellen und Halbleiterlichtquellen

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CA2106984C (fr) * 1991-04-03 2001-12-18 Robert E. Levin Lampe et reflecteur
JP3048632U (ja) * 1997-11-05 1998-05-22 日本フレネル株式会社 照明灯用反射鏡
US6086227A (en) * 1998-09-11 2000-07-11 Osram Sylvania Inc. Lamp with faceted reflector and spiral lens
US7441927B1 (en) * 2007-07-02 2008-10-28 Osram Sylvania Inc. Lamp with a lens lenticule pattern based on the golden ratio
EP2535639A1 (fr) * 2011-06-17 2012-12-19 Jordan Reflektoren GmbH & Co.KG Réflecteur à lampes et son dispositif de fabrication
DE102011085275B4 (de) * 2011-07-08 2021-01-28 Zumtobel Lighting Gmbh Optisches Element
CN102392974A (zh) * 2011-11-23 2012-03-28 蒋建华 高效防眩目led灯具矩形反光器
DE202013101815U1 (de) * 2013-04-26 2014-07-29 Zumtobel Lighting Gmbh Anordnung zur Lichtabgabe mit einer LED-Lichtquelle und einem Reflektor

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
DE102013201950A1 (de) * 2013-02-06 2014-08-07 Osram Gmbh Rasterleuchte mit Reflektorzellen und Halbleiterlichtquellen

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US20160327243A1 (en) 2016-11-10
CN106122844A (zh) 2016-11-16
EP3098504A1 (fr) 2016-11-30
US9841164B2 (en) 2017-12-12
CN106122844B (zh) 2019-03-01

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