EP1608909A1 - Element influant sur la lumiere - Google Patents

Element influant sur la lumiere

Info

Publication number
EP1608909A1
EP1608909A1 EP04725352A EP04725352A EP1608909A1 EP 1608909 A1 EP1608909 A1 EP 1608909A1 EP 04725352 A EP04725352 A EP 04725352A EP 04725352 A EP04725352 A EP 04725352A EP 1608909 A1 EP1608909 A1 EP 1608909A1
Authority
EP
European Patent Office
Prior art keywords
influencing element
light
grid elements
light influencing
element according
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.)
Granted
Application number
EP04725352A
Other languages
German (de)
English (en)
Other versions
EP1608909B1 (fr
Inventor
Katharina Keller
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.)
ZUMTOBEL LIGHTING GmbH
Original Assignee
Zumtobel Staff GmbH
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 Zumtobel Staff GmbH filed Critical Zumtobel Staff GmbH
Priority to EP10183921.5A priority Critical patent/EP2295851B1/fr
Publication of EP1608909A1 publication Critical patent/EP1608909A1/fr
Application granted granted Critical
Publication of EP1608909B1 publication Critical patent/EP1608909B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
    • 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
    • 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
    • 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
    • F21Y2105/00—Planar 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24364—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] with transparent or protective coating

Definitions

  • the present invention relates to a light influencing element for directing the light emitted by a light source according to the preamble of the independent claims.
  • the invention relates to a so-called luminaire grid.
  • Grids are known as optical elements for luminaires and are usually used to concentrate or restrict the light emitted by a light source to a predetermined angular range. This can prevent people from being blinded by the light emitted by a lamp. Furthermore, disturbing reflections, in particular on vertical surfaces - for example on screens - are avoided. Such grids are therefore used in particular in rooms in which workplaces are located.
  • Luminaire louvres of the type described above usually consist of a regular structure of louvre elements with mirrored side walls, which are arranged in front of the light source when viewed in the direction of light emission. For the desired optical effect of the concentration of the light beams on a given area, a certain ratio between the distance and the height of the respective raster elements must be maintained.
  • a typical grid of the type described above is known, for example, from US Pat. No. 6,139,169.
  • the raster elements usually have a height of several centimeters, generally about 5 cm, compared to the light sources, the distance between two raster elements being dimensioned somewhat larger. This limits the options for reducing the overall height of a luminaire.
  • the present invention has for its object to provide a novel light influencing element, which enables a lower overall height of lights. At the same time, however, the optical properties of a typical luminaire grid should be retained.
  • the object is achieved by a light influencing element which has the features of the independent claims.
  • the light influencing element according to the invention consists of a multiplicity of rib-like grid elements which each have reflecting side walls and are arranged in a regular structure.
  • the grid elements have a maximum height of 5 mm, preferably 1 mm. The distance between two grid elements preferably corresponds to approximately twice the height of the grid elements.
  • the solution according to the invention thus creates a luminaire grid with miniaturized grid elements, the desired light-directing or light-concentrating properties nevertheless being achieved. Due to the low height of this micro grid, there is greater freedom in the design of luminaires. In particular, luminaires with a very low overall height can be achieved. In addition, the light influencing element according to the invention also gives the lamp an optically appealing appearance. Furthermore, glare effects are reduced even when the luminaire is viewed at angles into which light is to be emitted.
  • the grid elements are arranged on a transparent base plate. This creates a new type of light influencing element which also has the desired lighting properties of a luminaire grid, but which gives the luminaire a different appearance.
  • the grid elements preferably have a maximum height of 5 mm.
  • the rib-like webs can assume any shape that enables light to be directed in the desired manner.
  • parabolic or ribbed structures are also conceivable.
  • the grid elements are preferably made of a plastic, in particular PMMA, and because of their small dimensions they represent a relatively unstable structure. In order to increase the stability of the light influencing element, the grid elements can therefore be held together via a side frame.
  • Another possibility of increasing the stability of the light influencing element is also to arrange the grid elements on a transparent base plate.
  • the raster elements be integrally formed with the base plate.
  • a further transparent plate can be arranged on the side of the grid elements opposite the base plate, which not only has the advantage that the stability is additionally increased, but also enables the light-influencing element to be cleaned more easily.
  • the grid is better protected against dirt right from the start.
  • the grid elements can be arranged in parallel next to one another or in a cross structure. This arrangement is particularly advantageous when elongated fluorescent tubes are used as light sources. In addition, however, it is also possible to form the grid elements in a ring shape and to arrange the individual rings in a honeycomb pattern. This arrangement is particularly suitable for point-shaped light sources, such as light bulbs, or for flat light sources. Furthermore, ring-shaped light sources - these are generally gas discharge lamps - can also be used, the grid elements then being e.g. can be arranged as concentric circles.
  • the side surfaces and preferably also the end surfaces facing away from the light source must be mirrored. This can be done, for example, by providing the raster elements with a reflective layer using a vapor deposition method.
  • the light influencing element itself is preferably produced by the injection molding process.
  • Figure 1 shows a lamp with a light influencing element according to the invention in section.
  • FIG. 2 shows an enlarged illustration of a first exemplary embodiment of a light influencing element according to the invention
  • FIG. 5 shows a fourth exemplary embodiment of a light influencing element according to the invention.
  • FIG. 7 shows the interaction of the light influencing element according to the invention with a specially designed flat illuminant.
  • FIG. 1 shows, as an application example of the present invention, a recessed ceiling light 1 with an elongated light source 4, in which a light influencing element 6 according to the invention is used.
  • a light influencing element 6 according to the invention.
  • light influencing elements according to the present invention can also be used with other types of luminaires.
  • the application is not limited to luminaires with elongated light sources.
  • the lamp 1 shown in Figure 1 consists of a box-shaped lamp housing 2, on the bottom side of which there are connection means 3 for the light source 4, which is a fluorescent tube.
  • the light emitted by the fluorescent lamp 4 is directed to the light exit opening of the housing 2 by means of a reflector 5 arranged in the housing 2 and is emitted via the latter.
  • a light influencing element 6 is arranged at the light exit opening, which effects a concentration of the light rays on the desired area.
  • the light influencing element 6 is only a few millimeters high and thus opens up the possibility of keeping the overall height of the lamp 1 very low.
  • Figure 2 shows an enlarged section A of the light influencing element 6 in section.
  • the light influencing element 6 consists of a transparent base plate 9 on the lower flat side of which rib-like raster elements 7 are arranged in a regular structure are.
  • the grid elements 7 are designed as elongated webs and arranged parallel to one another.
  • the concentration of the light beams on the desired angular range is achieved in that the raster elements 7, which are likewise made of a transparent material, are provided with a reflective layer 8 on their side faces and on their end faces.
  • the light rays coming from the light source and passing through the transparent base plate 9 are therefore - as in the case of a conventional luminaire grid - reflected on the side surfaces of the grid elements 7, so that light radiation is only possible in a limited angular range.
  • the height H of the grid elements 7 is a maximum of 5 mm, preferably it is approximately 1 mm.
  • the distance D between two adjacent raster elements 7 must also not be too large.
  • the distance D preferably corresponds approximately to twice the height of a raster element 7.
  • the grid elements 7 can have a slightly V-shaped shape in cross section, as is known from conventional lamp grids. However, it is also possible, as the exemplary embodiments in FIGS. 3a and b show, to design the raster elements 7 differently.
  • the grid elements 7 have a parabolic V structure, while in FIG. 3b they have a special rib structure which is formed by sections 7a which are arranged one above the other, prismatically or in a wedge shape. Rib structures of this type are known, for example, from AT 308 901 or EP 0 286 890 A1.
  • FIGS. 3a the grid elements 7 have a parabolic V structure
  • FIG. 3b they have a special rib structure which is formed by sections 7a which are arranged one above the other, prismatically or in a wedge shape.
  • Rib structures of this type are known, for example, from AT 308 901 or EP 0 286 890 A1.
  • the grid elements 7 are each connected in one piece to the base plate 9, which is made of a transparent material.
  • the light influencing element 6 according to the invention consists of a transparent plastic and is produced by the injection molding process. Any type of plastic can be used for injection molding, which enables the formation of a transparent workpiece and is suitable for injection molding. This is preferably PMMA.
  • the side and end faces of the grid elements 7 must be provided with the reflective layer 8. This is preferably done by a vacuum coating process, care being taken that the surfaces of the base plate 6 lying between the grid elements 7 are not also coated, but instead allow light to pass through.
  • the advantage of the exemplary embodiments shown in FIGS. 2 and 3 is that due to the one-piece design of the base plate 9 with the grid elements 7, the light influencing element 6 according to the invention has increased stability.
  • a further transparent plate 10 can be arranged on the side of the grid elements 7 opposite the base plate 9, as shown in FIG. 3.
  • the use of this additional transparent plate 10 has the further advantage that penetration of dirt particles into the spaces between two grid elements 7 is avoided.
  • the light influencing element 6 can be cleaned better overall.
  • the light influencing element 6 can be produced by the injection molding process.
  • the grid elements 7 and the transparent base plate 9 are not formed in one piece. Instead, the base plate 9 was glued to the grid elements 7 in a later step. This also increases the stability of the light influencing element 6.
  • the grid elements consisted of elongated ribs which were arranged parallel to one another. In this way, glare reduction of the light emitted by the light source can be achieved in one direction.
  • the grid elements can be arranged, for example, in a crossed structure. A similar optical effect to this can also be achieved with the grid shown in FIG. 6.
  • the grid elements consist of annular structures 12 which are arranged in a honeycomb pattern. The diameter of an individual ring structure is again preferably about 2 mm and can also be significantly smaller.
  • ring-like structures is particularly useful when a point-shaped light source - for example a light bulb - is used and the light influencing element has a square or circular shape.
  • the inner sides of the ring structures 12 are in turn provided with a reflective layer.
  • An alternative embodiment, which is particularly suitable for ring-shaped light sources such as e.g. offers correspondingly shaped gas discharge lamps, can also consist in forming the grid elements as concentrically arranged rings.
  • the light influencing element 6 can be produced with a very low overall height.
  • flat illuminants can also be used, each of the exemplary embodiments shown being able to be used as a light influencing element.
  • a flat lamp which is known, for example, from WO 99/40364 AI by the applicant
  • a light influencing element according to the invention is shown in FIG. 7.
  • the illuminant consists of a base plate 13, on the side surface of which faces the grid elements 7, individual light sources 14 are arranged.
  • These light sources 14, which consist for example of an organic material or inorganic semiconductor material that emits light when an electrical voltage is applied, have very small dimensions and can therefore be arranged with respect to the light influencing element 6 in such a way that their light is almost exclusively between the free space the grid elements 7 radiate.
  • the efficiency of the luminaire formed in this way is optimized since the light sources 14 only cover the space between two grid elements 7.
  • the upper sides of the raster elements 7 again being preferably assigned regions of the illuminant in order to optimize the efficiency are that do not emit light.
  • the exemplary embodiment shown here enables a particularly flat luminaire to be realized since, in addition to the light influencing element, the light source also has a very low height.
  • the present invention thus opens up the possibility of achieving light bundling of the light emitted by a light source with an optical element which has a very low height. This gives you greater freedom in the design of a lamp. On the other hand, the luminaire is given an optically appealing appearance, but the desired lighting properties are still obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

L'invention concerne un élément (6) influant sur la lumière, c'est-à-dire déviant la lumière émise par une source de lumière (4) dans une plage angulaire prédéterminée. Cet élément comporte une pluralité d'éléments de grille (7, 12) du type nervure qui présentent des parois latérales réfléchissantes et sont disposés en une structure régulière. Ces éléments de grille (7, 12) ont une hauteur (H) maximale de 5 mm. Avec un tel élément influant sur la lumière, on obtient, d'une part, une plus grande liberté pour la mise en forme de la lumière, et, d'autre part, pour la lampe, un aspect optiquement attrayant.
EP04725352.1A 2003-04-03 2004-04-02 Element influant sur la lumiere Expired - Lifetime EP1608909B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10183921.5A EP2295851B1 (fr) 2003-04-03 2004-04-02 Elément influant sur la lumière

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10315268A DE10315268A1 (de) 2003-04-03 2003-04-03 Lichtbeeinflussungselement
DE10315268 2003-04-03
PCT/EP2004/003520 WO2004088203A1 (fr) 2003-04-03 2004-04-02 Element influant sur la lumiere

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP10183921.5A Division EP2295851B1 (fr) 2003-04-03 2004-04-02 Elément influant sur la lumière
EP10183921.5A Division-Into EP2295851B1 (fr) 2003-04-03 2004-04-02 Elément influant sur la lumière

Publications (2)

Publication Number Publication Date
EP1608909A1 true EP1608909A1 (fr) 2005-12-28
EP1608909B1 EP1608909B1 (fr) 2015-02-25

Family

ID=32981015

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04725352.1A Expired - Lifetime EP1608909B1 (fr) 2003-04-03 2004-04-02 Element influant sur la lumiere
EP10183921.5A Expired - Lifetime EP2295851B1 (fr) 2003-04-03 2004-04-02 Elément influant sur la lumière

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10183921.5A Expired - Lifetime EP2295851B1 (fr) 2003-04-03 2004-04-02 Elément influant sur la lumière

Country Status (9)

Country Link
US (1) US7766506B2 (fr)
EP (2) EP1608909B1 (fr)
CN (1) CN100532928C (fr)
AU (1) AU2004225784B2 (fr)
CA (1) CA2521058C (fr)
DE (1) DE10315268A1 (fr)
NO (1) NO336741B1 (fr)
NZ (1) NZ542705A (fr)
WO (1) WO2004088203A1 (fr)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
DE102004039676A1 (de) * 2004-08-16 2006-02-23 Zumtobel Staff Gmbh Rasteranordnung
DE102005035720A1 (de) 2005-07-29 2007-02-08 Zumtobel Staff Gmbh Leuchte mit einer langgestreckten Lichtquelle und mit einem ebenfalls langgestreckten Lichtleitelement
DE102006027207A1 (de) 2006-02-01 2007-08-02 Zumtobel Lighting Gmbh Leuchte mit einem kastenförmigen Leuchtengehäuse und einem Lichtaustrittselement
US8110827B2 (en) * 2007-04-04 2012-02-07 Koninklijke Philips Electronics N.V. Light emitting device
DE102007039388A1 (de) * 2007-08-21 2009-02-26 Zumtobel Lighting Gmbh Beleuchtungsanordnung mit Lichtquelle und Sensor zum Erfassen des von der Lichtquelle angegebenen Lichts
DE102007057691B4 (de) * 2007-11-30 2018-01-18 Siteco Beleuchtungstechnik Gmbh Blende für eine Leuchte
USD711037S1 (en) * 2013-04-19 2014-08-12 Cooper Technologies Company Open frame edgelit high bay luminaire
CN107843948A (zh) * 2017-06-26 2018-03-27 扬州瑞威光电科技有限公司 一种罗兰圆结构的Bragg衍射双光栅结构设计方法

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GB494724A (en) * 1937-04-28 1938-10-28 Gilbert Allom Improvements in or relating to electric lighting fixtures or fitments for cabins, rooms and similar interiors
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AT308901B (de) 1971-08-27 1973-07-25 Zumtobel Kg Leiste zur Bildung von Lichtrastern
AT386471B (de) 1987-04-13 1988-08-25 Zumtobel Ag Raster fuer leuchtstofflampenleuchten
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CA2319056C (fr) 1998-02-05 2007-09-18 Zumtobel Staff Gmbh Systeme d'eclairage
US6139169A (en) 1999-04-01 2000-10-31 Caferro; Ronald N. Encased louvers for outdoor lighting
AU765828B2 (en) * 1999-05-20 2003-10-02 Zumtobel Staff Gmbh Light
DE10044455B4 (de) * 2000-09-08 2009-07-30 Osram Opto Semiconductors Gmbh Signalleuchte
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Also Published As

Publication number Publication date
NO20054373L (no) 2005-11-03
CN1768232A (zh) 2006-05-03
CA2521058A1 (fr) 2004-10-14
AU2004225784A1 (en) 2004-10-14
US20060216474A1 (en) 2006-09-28
EP2295851A3 (fr) 2014-09-03
DE10315268A1 (de) 2004-10-14
US7766506B2 (en) 2010-08-03
CN100532928C (zh) 2009-08-26
AU2004225784B2 (en) 2008-09-25
CA2521058C (fr) 2011-11-01
NO336741B1 (no) 2015-10-26
NO20054373D0 (no) 2005-09-21
NZ542705A (en) 2008-02-29
EP2295851A2 (fr) 2011-03-16
EP2295851B1 (fr) 2017-03-15
WO2004088203A1 (fr) 2004-10-14
EP1608909B1 (fr) 2015-02-25

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