EP1978298A2 - Réflecteur pour une lampe - Google Patents

Réflecteur pour une lampe Download PDF

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Publication number
EP1978298A2
EP1978298A2 EP08154055A EP08154055A EP1978298A2 EP 1978298 A2 EP1978298 A2 EP 1978298A2 EP 08154055 A EP08154055 A EP 08154055A EP 08154055 A EP08154055 A EP 08154055A EP 1978298 A2 EP1978298 A2 EP 1978298A2
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EP
European Patent Office
Prior art keywords
reflector
segments
segment
reflector according
field
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.)
Withdrawn
Application number
EP08154055A
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German (de)
English (en)
Other versions
EP1978298A3 (fr
Inventor
Tetsuhiro Kano
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.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1978298A2 publication Critical patent/EP1978298A2/fr
Publication of EP1978298A3 publication Critical patent/EP1978298A3/fr
Withdrawn legal-status Critical Current

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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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21V7/048—Optical design with facets structure

Definitions

  • the invention relates to a rotationally symmetrical reflector whose reflection surface consists of several segments.
  • a luminous field is understood here as the illuminance distribution which is not generated by direct, but only by reflected light beams.
  • FIGS. 1 to 3 show how a rotationally symmetrical reflector forms its luminous field: On the right side in each case the longitudinal section of an elliptical reflector 1 is shown, in which a lamp 2 is arranged with a point light source 3. The left side shows in each case the light field reflected by reflected light rays on a wall 5.
  • FIG. 1 shows that the light rays 4a reflected by the edge region 1a of the reflector on the wall 5 form a large annular luminous field 6a.
  • FIG. 2 shows that the light beams 4b reflected by the intermediate region 1b of the reflector form a smaller annular luminous field 6b within the large annular luminous field 6a.
  • FIG. 3 shows that the light beams 4c reflected by the apex portion 1c of the reflector form a small circular luminous field 6c at the center.
  • the brightness of a light field depends on how close light rays hit a wall surface.
  • the areas 1a, 1b and 1c of the reflector are divided at the same angle so that each area reflects about the same amount of light rays. From the light field 6c of FIG. 3 it can be seen that the reflected light beams 4c concentrate on a small area and form a very bright illuminated field.
  • the reflection areas 1a, 1b and 1c are roughened, for example, by sandblasting or hammering, so that the reflected light beams 4a, 4b and 4c are spread wider.
  • these light rays are partly outside the desired light field and the loss increases.
  • the reflection surface consists of several planar segments, by means of which also in the Figures 1 - 3 described light fields can be generated.
  • a lamp assembly incorporating a paraboloidal reflector and a filament having a filament is known.
  • the reflector has a concave reflection surface and a rotation axis, wherein the reflection surface has a plurality of reflective facets.
  • the filament is substantially in the focus of the reflection surface and aligned with the axis of rotation.
  • the filament has a length to diameter ratio of 6: 1 or greater.
  • the facets have at least 50% of the reflective surface dimensions and curvatures selected to produce a light pattern in which a facet-induced ratio of filament width dispersion to filament length dispersion is at least 2: 1.
  • the axis of rotation defines an axial direction and a direction of rotation about the axis.
  • the reflective facets are arranged in axially contiguous rings centered on the axis and lying in a plane perpendicular to the axis.
  • the known paraboloidal reflector is designed in such a way that the facets in their entirety produce a single circular luminous field.
  • the invention has for its object to provide a reflector which generates a bright, homogeneous light field with a clear demarcation on the edge of the light field on a wall.
  • the claim 16 relates to a method for producing a tool for producing a reflector.
  • the claim 17 relates to a tool for producing a reflector.
  • FIG. 1 shows a schematic example of a conventional elliptical reflector 1 with a lamp 2 and its luminous field 6 a, which is generated by the edge region 1 a of the reflection surface on a wall 5.
  • FIG. 2 shows the same reflector 1 with the lamp 2 and its luminous field 6 b, which is generated by the intermediate portion 1 b of the reflection surface on the wall 5.
  • FIG. 3 shows the same reflector 1 with the lamp 2 and its luminous field 6 c, which is generated by the apex portion 1 c of the reflection surface on the wall 5.
  • FIG. 4 shows a schematic, first embodiment of a reflector 7 according to the invention.
  • FIG. 5 shows the reflector 7 according to the invention with a lamp 2 and the light field 12 a, which is generated by the edge region 8 a of the reflection surface on a wall 5.
  • FIG. 6 shows the reflector 7 according to the invention with the lamp 2 and the light field 12 b, which is generated by the intermediate portion 8 b of the reflection surface on the wall 5.
  • FIG. 7 shows the reflector 7 according to the invention with the lamp 2 and the light field 12 c, which is generated by the apex portion 8 c of the reflection surface on the wall 5.
  • FIG. 8 shows a three-dimensional representation of the top, first segment 9a of the reflector 7 with the radiated from the point light source 3 and reflected by the segment 9a light beams 13, 14, 15 and 16th
  • FIG. 9 FIG. 12 shows the light field 17 generated by all light rays reflected by the segment 9a on the wall compared to the light field 18 of a conventional elliptical reflector 1 having the same reflection surface.
  • FIG. 10 shows the reflector 7 according to the invention with the lamp 2 and the light-emitting panel 17 a, of the by the top, first Segment 9a reflected light rays 19a on the wall 5 is generated.
  • FIG. 11 shows the reflector 7 according to the invention with the lamp 2 and the light field 17g, which is generated on the wall 5 of the light beams 19g reflected by the adjacent first segment 9g.
  • FIG. 12 shows the reflector 7 according to the invention with the lamp 2 and the light field 23, which is generated by the light reflected by the uppermost, last segment 9f light beams 19f on the wall 5.
  • FIG. 13 shows a schematic, second embodiment of a reflector according to the invention.
  • FIG. 14 shows the reflector according to the invention with a lamp 2 and a generated on a wall 5 of light field 30a, which is generated by light beams 29a.
  • FIG. 15 shows the reflector according to the invention with a lamp 2 and a luminous fields 30a and 30b generated on a wall 5, which are generated by light beams 29a and 29b.
  • FIG. 16 shows the reflector according to the invention with a lamp 2 and a luminous fields 30a, 30b and 30c generated on a wall 5, which are generated by light beams 29a, 29b and 29c
  • FIG. 17 shows a schematic, third embodiment of a reflector according to the invention.
  • FIG. 18 shows a schematic, fourth embodiment of a reflector according to the invention.
  • FIG. 4 shows a side and a front view of a reflector 7 of the invention.
  • This reflector is rotationally symmetrical.
  • a rotationally symmetrical reflector in the sense of the invention is understood to mean a reflector whose reflection surface For example, corresponds to a spherical segment or a Rotationsellipsoidsegment or has a shape that is similar to a spherical segment or a Rotationsellipsoidsegment.
  • Its reflection surface 8 consists of several segments 9. The segments 9 are arranged in the transverse direction to the reflector axis 10, ie in the circumferential direction of the reflector axis 10, at a certain angle ⁇ , in this example 30 degrees, as in the right-hand illustration in FIG FIG. 4 is illustrated.
  • each of the segments 9 is illustrated with the reference numerals L1 and L2, distributed in the longitudinal direction of the reflector axis 10 with different lengths. Furthermore, each of the segments 9 is curved so that it forms a spherical trapezium and all segments are lined up in the direction of the reflector axis 10 at different angles, as shown in the left illustration of FIG. 4 is illustrated by the reference symbols ⁇ and ⁇ . The radius R of the spherical trapezoid is the same for all segments.
  • a spherical trapezoid in the context of the invention is meant a segment having four boundary lines, two of which are curved and parallel to each other, and the other two are rectilinear and equal length and to run towards each other.
  • Such a segment is for example in the right representation of FIG. 4 designated by the reference numeral 9a.
  • FIG. 5 shows that the reflected by the edge portion 8a of the reflector light beams 11a on a wall 5, a completely circular light field 12a produce.
  • FIG. 6 shows that the light beams 11b reflected by the intermediate region 8b produce an equally perfectly circular light field 12b.
  • FIG. 7 shows that the light beams 11c reflected by the apex portion 8c also generate a perfectly circular light field 12c.
  • the FIG. 8 shows a three-dimensional representation of the top, first segment 9a with the light beams 13, 14, 15 and 16, the emitted from the point light source 3 and reflected by the segment 9a. Because of its shape, namely, the spherical trapezoid, not only the light rays 15 and 16 incident on the side of the segment 9a but also the light rays 13 and 14 incident on the center of the segment become larger as compared with an elliptic reflection surface angle of reflection. As a result, the light beams are reflected wider and form a larger light field.
  • FIG. 9 shows at the top the light field 17, the light beams 19a (see FIG. 10 ) is generated on a wall 5, which are reflected by the segment 9a.
  • the FIG. 9 In contrast, below shows the light field 18, which is generated by a known elliptical reflector 1. The amount of reflected light rays and the size of the reflection surface are the same for both reflectors.
  • the luminous field 17a which is generated by the light rays 19a on the wall 5, which are reflected by the uppermost first segment 9a. Due to the inclination angle of the segment 9a and its length, the luminous field 17a is positioned so that the lower end 20 of the luminous field 17a reaches the circle 21 of the desired luminous field 12a and vertically approximately as long that the upper end 22 reaches the center of the desired luminous field 12a ,
  • FIG. 11 on the left shows the light field 17g produced by the light rays passing through the uppermost and adjacent segment 9g (see FIG FIG. 4 ) are reflected.
  • the shape of the light field 17g is identical to the shape of the light field 17a.
  • the light field 17g is, however, arranged rotated by 30 degrees counterclockwise with respect to the light field 17a. Since the segments are distributed in the transverse direction at an angle of 30 degrees in the circle, the same light field in the circle repeats a total of twelve times. This results in a completely circular illuminated field 12a through only one row of the segments.
  • a segment produces a similar light field as the light field 17a, but a little narrower and longer.
  • the twelve segments of the second row form, just like the segments of the first row, a completely circular illuminated field 12a.
  • the edge region 8a in the FIG. 5 consists of the first three segments. As stated above, each row forms a perfectly circular illuminated field.
  • the luminous field 12a in its entirety consists of three perfectly circular luminous fields, which are superposed on each other, each of these completely circular luminous fields being produced by a segment row.
  • the FIG. 12 Fig. 12 shows on the left side the luminous field 23 generated by the light beams 19f reflected by the uppermost and last segment 9f.
  • the segment 9 f reflects the light beams 19 f so high that the upper end 24 of the light field 23 reaches the circle 21 of the desired light field 12 and so deep that the lower end 25 also reaches the circle 21. Since this luminous field 23 is repeated twelve times with the angle of 30 degrees, a completely circular luminous field 12c is formed again.
  • the segment 9 f can also reflect the light beams 19 f so deeply that the lower end 25 of the light field 23 reaches the center of the circle 21.
  • the total field of this reflector consists of a total of six completely circular fields of light, which are superimposed on each other.
  • the total field of light - depending on the reflector size - consist of up to fifteen perfectly circular, superimposed light fields. This creates a very homogeneous light field with a clear demarcation at the edge of the light field.
  • the light field 23 of the FIG. 12 has great advantages for the lamps, which produce different light colors in a horizontal position, such as high pressure ceramic metal halide vapor lamps.
  • the metal halide substance filled in the burner does not evaporate completely and the remainder remains as a yellow coating on the bottom of the burner.
  • the light rays emitted by the coating are yellowish in color and form a yellow spot on the wall in the light field.
  • the segments distribute the yellow spot very widely, so that the intensity of the yellow color is reduced. Furthermore, the light field 23 is rotated twelve times. As a result, the yellow spot is even wider spread and mixed with the light fields without yellow spot. Thus, the circular luminous field is neutralized.
  • the light source system without a reflector or with a conventional reflector, such. Paraboloidal or ellipsoidal reflector is used, creates a shadow with other colors than the color of the illuminated object, because the three light colors can not be mixed sufficiently.
  • the reflector according to the invention the light beams are distributed widely with different colors and the resulting light fields are placed several times rotated on each other. Thus, a single light color is generated in which three light colors have been mixed perfectly.
  • each segment row forms a completely circular illuminated field. But this does not always have to be this way. Even with three rows of segments can be a perfect circular light field are formed. This is particularly useful in forming a large light field.
  • FIG. 13 shows a reflector 26 as a second embodiment of the invention.
  • FIGS. 14 to 16 show how the three outer rows of segments form a perfectly circular illuminated field. It should be the size of the circle 31 of the desired total field of light as about three times larger compared to the circle 21 in the 10 to 12 begin.
  • FIG. 14 shows on the left side the light field 30a generated by the light rays 29a on a wall 5 passing through the uppermost first segment 27a (see FIG FIG. 13 ) are reflected. Due to the inclination angle ⁇ of the segment 27a, as shown in the left-hand illustration in FIG FIG. 13 is illustrated, the luminous field 30a is positioned so that the lower end of the luminous field 30a reaches the circle 31 of the desired entire luminous field. Theoretically, the light field 30a can be made even wider. But the radius of segment 27a has to be smaller for that. It is difficult to precisely press a reflector with the small radius. Practically, one chooses a radius that is a good compromise for the width of the light field and the precision of the reflector shape.
  • the Fig. 15 shows on the left side of the light field 30b, which is generated by the light beams 29b, which are reflected by the segment 27b.
  • the luminous panel 30b is positioned so that its lower end fits with the upper end of the luminous panel 30a.
  • the Fig. 16 shows on the left side of the luminous field 30c, which is generated by the light beams 29c, which are reflected by the third segment 27c.
  • the luminous field 30c is positioned so that its lower end mates with the upper end of the luminous panel 30b and its upper end reaches the center of the circle 31.
  • the three segments 27a, 27b and 27c form a step consisting of the light fields 30a, 30b and 30c.
  • the adjacent three segments form an equal step but are rotated in the transverse direction at an angle of 30 degrees.
  • an equal step in the circle is repeated a total of twelve times. This creates a completely circular illuminated field through three rows of segments.
  • the next segment 27d may form a similar second stage of the luminous fields.
  • the segment 27d should reflect the light rays so far down that its luminous field has the same height as that of the luminous field 30a. Since the upper segment 27c reflects the light beams upward so high that its luminous field 30c reaches the center of the circle 31, the inclination angle ⁇ of the segment 27d becomes smaller than the inclination angle ⁇ of the segment 27c (see FIG Fig. 13 , left illustration).
  • a grinding machine grinds the tool with a back and forth movement (in the left image of the Fig. 13 Left and right movement) from the segment 27a ago with the specified angle.
  • a tool which consists of two parts, which are in the region of the junction of the two segments 27c, 27d assembled and separable.
  • Such a tool is produced by first providing it in the form of a two-part molded body, juxtaposing the two parts of the shaped body, bringing the outside of the shaped body into rotationally symmetrical shape by a turning operation, separating the two parts of the shaped body, then inserting them one at a time each desired segment shape brought are then reassembled the two parts of the molding and the tool in assembled form for the preparation of the reflector according to FIG. 13 is used.
  • the segment 27d would reflect the light rays so high that the upper end of the light field reaches the circle 31, such as the light field 23 of the Fig. 12 , then the inclination angle ⁇ of the segment 27d would be greater than the inclination angle ⁇ of the segment 27c. In this case, no "kink" arises.
  • the width of a light field in the horizontal direction is determined by the radius R of the segments and the distribution angle of the segments in the circumferential direction.
  • the length of a light field in the vertical direction is determined by the length of the segment.
  • the arrangement of a light field is defined by the angle of inclination of the segment in the longitudinal direction of the reflector axis 10.
  • the radius is always the same. Therefore, the width of the luminous field in the direction of the vertex becomes smaller and smaller.
  • the radius can be different for each segment row. For example, the radius can be changed so that the segments get an ever smaller radius in the direction of the vertex. As a result, each time the same width of the light field is formed regardless of the rows.
  • the "radius" of the segments need not necessarily be circular, but may also have a different shape, for example, it may be ellipsoidal.
  • the shape of a segment must correspond to a spherical trapezoid or possibly a circular cone section. That is, the longitudinal section must be a straight line. If the longitudinal section of a segment were a curve, then the shape of the segment would be a sphere section or an ellipsoidal section that would reflect the light rays in all directions, in part back into the reflector.
  • a relatively small luminous field for example, with a beam angle of 20 degrees, can not be formed with these segments, because the inclination angle of the segment can not influence the reflection direction of the light beams.
  • FIG. 17 shows a side and a front view of a reflector according to a third embodiment of the invention.
  • An inwardly curved segment 9a is located between two outwardly curved segments 32a and 33a.
  • This combination is advantageous in the reflector manufacture, since you can press the reflector smooth.
  • segments which are arched outwardly form a smaller width of the light field than the inwardly curved segments.
  • the radius of the outwardly curved segments can be made correspondingly smaller.
  • FIG. 18 shows a fourth embodiment of a reflector according to the invention. This produces an approximately quadrangular field without deviating from the rotationally symmetrical reflector shape.
  • n adjacent segments with a smaller radius R1 alternate with n adjacent segments with a larger radius R2, n being equal to 3.
  • R1 and R2 are in the FIG. 18 illustrated with arrows labeled R1 and R2, respectively.
  • the length of these arrows corresponds to the radius.
  • the small circle at the beginning of each arrow corresponds to the center of a circle, the arrowhead of each arrow touches the edge of each associated segment.
  • Radially adjacent segments each have the same radius R1 or R2.
  • a smaller radius segment R1 reflects the light beams wider and thus produces a wider light field than a larger radius segment R2.
  • the segments with the smaller radius R1 produce a laterally wide light field, while the segments with the larger radius R2 generate a laterally narrow field.
  • a plurality of adjacent segments with a radius R1 can alternate cyclically with a plurality of adjacent segments with a radius R2 and a plurality of adjacent segments with a radius R3 in the circumferential direction of the reflector. This has the advantage that the corners of the square overall light fields are sharply delineated.
  • a reflector according to the invention is rotationally symmetrical and can be produced inexpensively.
  • a quadrangular light field can be well used, for example, in the context of dental lighting. Furthermore, a very large rectangular light field can form through a plurality of reflectors. Such a large rectangular light field can be used, for example, for the recording illumination of an auto-crash test.
  • a reflector according to the invention it is not necessary to roughen the reflection surface because the light rays are widely reflected by the segments.
  • the reflection surface can be anodized brilliantly. This shine gives a light a noble appearance.
  • a reflector according to the invention is inexpensive to produce and calculable. Under calculable is to be understood that in the development of a specific reflector using a computer, the light distribution can be simulated. This allows the design of a reflector whose shape produces a desired light field.
EP08154055A 2007-04-07 2008-04-04 Réflecteur pour une lampe Withdrawn EP1978298A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007016748A DE102007016748A1 (de) 2007-04-07 2007-04-07 Reflektor für eine Leuchte

Publications (2)

Publication Number Publication Date
EP1978298A2 true EP1978298A2 (fr) 2008-10-08
EP1978298A3 EP1978298A3 (fr) 2008-11-12

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Family Applications (1)

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EP08154055A Withdrawn EP1978298A3 (fr) 2007-04-07 2008-04-04 Réflecteur pour une lampe

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EP (1) EP1978298A3 (fr)
JP (1) JP2008257251A (fr)
DE (1) DE102007016748A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2330340A3 (fr) * 2009-12-03 2012-09-05 Mass Technology (H.K.) Limited Coupelle réflectrice et lampe à DEL la comprenant
CN102798079A (zh) * 2012-07-04 2012-11-28 特殊光电科技(中山)有限公司 一种用于led灯的灯杯
DE102011081349A1 (de) * 2011-05-25 2012-11-29 Dilitronics Gmbh Reflektor für eine strassenlampe
DE102011085418A1 (de) * 2011-10-28 2013-05-02 Trilux Gmbh & Co. Kg Reflektor für Halbleiterlichtquellen
EP2426407A3 (fr) * 2010-09-01 2013-11-27 Taiwan Network Computer & Electronic Co., Ltd. Accessoire d'éclairage équipé d'un réflecteur formé
EP3293440A1 (fr) * 2016-09-12 2018-03-14 Bartenbach Holding GmbH Jeux d'éclairage ainsi qu'émetteur associé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2428727B1 (fr) * 2010-08-25 2013-11-13 Jordan Reflektoren GmbH & Co.KG Réflecteur à lampes et son dispositif de fabrication
EP2535639A1 (fr) * 2011-06-17 2012-12-19 Jordan Reflektoren GmbH & Co.KG Réflecteur à lampes et son dispositif de fabrication
CN102661502B (zh) * 2012-04-24 2014-04-02 埃赛力达科技（深圳）有限公司 鳞片式反射灯具及其设计方法

Citations (1)

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DE69130738T2 (de) 1991-04-03 1999-09-02 Flowil Int Lighting Reflektor mit lampe

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US2174937A (en) * 1936-12-21 1939-10-03 Dietz Gustav Reflector
DE1081393B (de) * 1937-12-31 1960-05-12 Philips Patentverwaltung Glockenfoermiger Reflektor, welcher auf seiner wirksamen Oberflaeche eine Anzahl untereinander durch Riffeln getrennte Facetten aufweist
US4021659A (en) * 1975-10-30 1977-05-03 General Electric Company Projector lamp reflector
DE4413370A1 (de) * 1994-04-19 1995-10-26 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Reflektorglühlampe
DE19910192C2 (de) * 1999-03-09 2002-04-04 Schott Auer Gmbh Reflektor mit einem konkaven rotationssymmetrischen Grundkörper und einer Facetten aufweisenden Reflexionsfläche
JP2001167614A (ja) * 1999-12-08 2001-06-22 Koito Mfg Co Ltd 車両用標識灯
DE10020348B4 (de) * 2000-04-26 2006-02-23 Tetsuhiro Kano Reflektor für elektromagnetische Strahlen
DE10048561A1 (de) * 2000-09-30 2002-04-11 Hella Kg Hueck & Co Lichteinheit für Fahrzeuge

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DE69130738T2 (de) 1991-04-03 1999-09-02 Flowil Int Lighting Reflektor mit lampe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2330340A3 (fr) * 2009-12-03 2012-09-05 Mass Technology (H.K.) Limited Coupelle réflectrice et lampe à DEL la comprenant
EP2426407A3 (fr) * 2010-09-01 2013-11-27 Taiwan Network Computer & Electronic Co., Ltd. Accessoire d'éclairage équipé d'un réflecteur formé
DE102011081349A1 (de) * 2011-05-25 2012-11-29 Dilitronics Gmbh Reflektor für eine strassenlampe
WO2012160101A3 (fr) * 2011-05-25 2013-05-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Réflecteur pour réverbère
CN103748409A (zh) * 2011-05-25 2014-04-23 业纳聚合物系统有限公司 用于路灯的反射器
CN103748409B (zh) * 2011-05-25 2016-11-09 业纳聚合物系统有限公司 用于路灯的反射器
DE102011085418A1 (de) * 2011-10-28 2013-05-02 Trilux Gmbh & Co. Kg Reflektor für Halbleiterlichtquellen
CN102798079A (zh) * 2012-07-04 2012-11-28 特殊光电科技(中山)有限公司 一种用于led灯的灯杯
EP3293440A1 (fr) * 2016-09-12 2018-03-14 Bartenbach Holding GmbH Jeux d'éclairage ainsi qu'émetteur associé

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DE102007016748A1 (de) 2008-10-09
JP2008257251A (ja) 2008-10-23
EP1978298A3 (fr) 2008-11-12

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