EP2295851A2 - Elément influant sur la lumière - Google Patents

Elément influant sur la lumière Download PDF

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Publication number
EP2295851A2
EP2295851A2 EP10183921A EP10183921A EP2295851A2 EP 2295851 A2 EP2295851 A2 EP 2295851A2 EP 10183921 A EP10183921 A EP 10183921A EP 10183921 A EP10183921 A EP 10183921A EP 2295851 A2 EP2295851 A2 EP 2295851A2
Authority
EP
European Patent Office
Prior art keywords
light
influencing element
element according
grid elements
elements
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
EP10183921A
Other languages
German (de)
English (en)
Other versions
EP2295851A3 (fr
EP2295851B1 (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
Publication of EP2295851A2 publication Critical patent/EP2295851A2/fr
Publication of EP2295851A3 publication Critical patent/EP2295851A3/fr
Application granted granted Critical
Publication of EP2295851B1 publication Critical patent/EP2295851B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—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 from a light source according to the preamble of the independent claims.
  • the invention relates to a so-called luminaire grid.
  • Screens are known as optical elements for luminaires and are commonly used to concentrate or confine the light emitted by a light source to a predetermined angular range. In this way it can be prevented that persons are blinded by the light emitted by a lamp. Furthermore, disturbing reflections, in particular on vertical surfaces - for example on screens - avoided. Such screens are therefore used in particular in rooms in which there are jobs.
  • Light grids of the type described above usually consist of a regular structure of grid elements with mirrored side walls, which are arranged in front of the light source as seen in the light emission direction. For the desired optical effect of the concentration of the light rays on a given area, a certain ratio between distance and height of the respective grid elements must be maintained.
  • the grid elements in comparison to the light sources usually have a height of several centimeters, usually about 5 cm, wherein the distance between each two grid elements is sized slightly larger. This limits the possibilities of reducing the height of a luminaire.
  • the present invention has for its object to provide a novel light influencing element, which allows a lower height of lights. At the same time, however, the optical properties of a typical lighting grid should be maintained.
  • the object is achieved by a light influencing element having 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 reflective sidewalls and are arranged in a regular structure.
  • the grid elements have a height of at most 5 mm, preferably 1 mm.
  • the distance between two raster elements preferably corresponds approximately to twice the height of the raster elements.
  • a luminous grid with miniaturized grid elements is thus created, while nevertheless achieving the desired light-directing or light-concentrating properties. Due to the small height of this micro-grid greater freedom in the design of lights. In particular, can be achieved with a very low height.
  • the light-influencing element according to the invention also gives the luminaire a visually appealing appearance. Furthermore, glare effects even when viewing the light angles, in which a light emission is to be reduced.
  • the grid elements are arranged on a transparent bottom plate.
  • a novel light influencing element is created, which also has the desired lighting properties of a luminaire grid, but gives the luminaire a different appearance.
  • the grid elements have a height of a maximum of 5 mm.
  • the rib-like webs can take any shape seen in cross section, which allows a light deflection in the desired manner.
  • the webs - as usual in conventional lamp grids - form V-shaped.
  • parabolic or ribbed structures are conceivable.
  • the grid elements are preferably made of a plastic, in particular of PMMA, where they represent a relatively unstable structure due to their small dimensions. In order to increase the stability of the light influencing element, therefore, the grid elements can be held together via a side frame.
  • Another way to increase the stability of the light influencing element, according to the second aspect of the invention is also to arrange the grid elements on a transparent bottom plate.
  • the raster elements be formed integrally with the bottom plate.
  • a further transparent plate can be arranged, which not only brings the advantage that the stability is additionally increased, but also enables easier cleaning of the light influencing element.
  • the grid is from the outset better protected against contamination.
  • the grid elements can be arranged parallel next to one another or in a cross-shaped structure. This arrangement is particularly advantageous when elongated fluorescent tubes are used as light sources.
  • annular light sources which are usually gas discharge lamps, can also be used, the raster elements then being e.g. can be arranged as concentric circles.
  • the side surfaces and preferably also the end faces facing away from the light source must be mirrored. This can be done, for example, by providing the raster elements with a reflective layer by a vapor deposition method.
  • the light-influencing element itself is preferably produced by injection molding.
  • 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 in other types of luminaires.
  • the application is not limited to lights with elongate light sources.
  • lamp 1 consists of a box-shaped lamp housing 2, on the bottom side connecting means 3 for the light source 4, in which it is a fluorescent tube, are arranged.
  • the light emitted by the fluorescent lamp 4 is directed by means of a reflector 2 arranged in the housing 2 to the light exit opening of the housing 2 and discharged via this.
  • a light influencing element 6 is arranged at the light exit opening, which effects a concentration of the light beams on the desired area.
  • the light influencing element 6 is only a few millimeters high, thus opening up the possibility of keeping the overall height of the luminaire 1 very low.
  • FIG. 2 shows an enlarged section A of the light influencing element 6 in section.
  • the light-influencing element 6 consists of a transparent bottom 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 formed as elongated webs and arranged parallel to each other.
  • the concentration of the light beams to the desired angular range is achieved by providing the raster elements 7, which are likewise made of a transparent material, with a reflective layer 8 on their side surfaces and on their end faces.
  • the light rays coming from the light source and passing through the transparent bottom plate 9 are therefore reflected on the side surfaces of the raster elements 7, as in a conventional luminaire raster, so that a light emission is made possible only within a limited angular range.
  • the height H of the grid elements 7 is a maximum of 5 mm, preferably it is about 1 mm.
  • the distance D between two adjacent grid elements 7 may also not be too large.
  • the distance D corresponds approximately to twice the height of a raster element 7.
  • the raster elements 7 can - as in FIG. 2 shown - seen in cross section have a slightly V-shaped form, as is known from conventional light grids. However, it is also possible, as the embodiments in the FIGS. 3a and b show to make the raster elements 7 different. In the example in Fig. 3a the raster elements 7 have a parabolic V-structure, while in Fig. 3b have a special rib structure, which is formed by superimposed, prismatic or wedge-shaped stepped portions 7a. Such rib structures are for example from the AT 308 901 or the EP 0 286 890 A1 known.
  • the grid elements 7 are each integrally connected to the bottom plate 9 consisting of a transparent material.
  • the light influencing element 6 according to the invention consists of a transparent plastic and is produced by injection molding.
  • any type of plastic can be used which allows 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 method, wherein it should be ensured that the lying between the grid elements 7 surfaces of the bottom plate 6 are not also coated, but continue to allow passage of light.
  • FIGS. 2 and 3 illustrated embodiments The advantage of in the FIGS. 2 and 3 illustrated embodiments is that due to the one-piece design of the bottom plate 9 with the grid elements 7, the light influencing element 6 according to the invention has an increased stability.
  • a further transparent plate 10 can be arranged on the side of the raster elements 7 opposite the bottom plate 9, as in FIG FIG. 3 is shown.
  • 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 As in the FIGS. 4 a and 4 b is shown, it is also possible to form the light-influencing element 6 according to the invention without bottom plate.
  • the grid elements 7 are arranged only parallel to each other. Since this results in a significantly lower stability of the entire arrangement, at least one side frame 11 is provided which holds the grid elements 7 together.
  • the light influencing element 6 can be produced by injection molding.
  • the grid elements 7 and the transparent bottom plate 9 are not formed in one piece. Instead, the bottom plate 9 was glued in a later step with the grid elements 7. This also increases the stability of the light influencing element 6.
  • the grid elements consisted of elongated ribs which were arranged parallel to each other. In this way, a glare of the light emitted by the light source can be achieved in one direction.
  • the raster elements can be arranged, for example, in a crossed structure. A similar optical effect can also with the in FIG. 6 shown grid can be achieved.
  • the raster elements consist in this case of annular structures 12 which are arranged in a honeycomb pattern.
  • the diameter of a single ring structure is again preferably about 2 mm and, moreover, can also be significantly lower.
  • ring-like structures is particularly suitable when a point 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 applicable to annular light sources, e.g. offers correspondingly shaped gas discharge lamps, may also be to form the grid elements as a concentrically arranged rings. Also in these embodiments, the light influencing element 6 can be created with a very low height.
  • each of the illustrated exemplary embodiments can be used as a light influencing element.
  • a light influencing element according to the invention is in Fig. 7 shown.
  • the luminous means consists of a bottom plate 13, to the grid elements 7 side facing individual light sources 14 are arranged.
  • the efficiency of the luminaire formed in this way is - since the light sources 14 only cover the gap between two grid elements 7 - optimized.
  • other flat bulbs can be used, in turn, to optimize the efficiency, the tops of the grid elements 7 preferably assigned to areas of the bulb are those who do not emit light.
  • the embodiment shown here enables the realization of a special flat light, since in addition to the light influencing element and the light source has a very low height.
  • the present invention thus offers the possibility of achieving light bundling of the light emitted by a light source with an optical element having a very small height.
  • an optical element having a very small height As a result, on the one hand, greater freedom in the design of light.
  • the luminaire is given a visually pleasing appearance, while still obtaining the desired photometric properties.

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)
EP10183921.5A 2003-04-03 2004-04-02 Elément influant sur la lumière Expired - Lifetime EP2295851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10315268A DE10315268A1 (de) 2003-04-03 2003-04-03 Lichtbeeinflussungselement
EP04725352.1A EP1608909B1 (fr) 2003-04-03 2004-04-02 Element influant sur la lumiere

Related Parent Applications (3)

Application Number Title Priority Date Filing Date
EP04725352.1A Division EP1608909B1 (fr) 2003-04-03 2004-04-02 Element influant sur la lumiere
EP04725352.1A Division-Into EP1608909B1 (fr) 2003-04-03 2004-04-02 Element influant sur la lumiere
EP04725352.1 Division 2004-04-02

Publications (3)

Publication Number Publication Date
EP2295851A2 true EP2295851A2 (fr) 2011-03-16
EP2295851A3 EP2295851A3 (fr) 2014-09-03
EP2295851B1 EP2295851B1 (fr) 2017-03-15

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 Before (1)

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

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)

* Cited by examiner, † Cited by third party
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT308901B (de) 1971-08-27 1973-07-25 Zumtobel Kg Leiste zur Bildung von Lichtrastern
EP0286890A2 (fr) 1987-04-13 1988-10-19 Zumtobel Aktiengesellschaft Ecran pour armature à lampe fluorescente
WO1999040364A1 (fr) 1998-02-05 1999-08-12 Zumtobel Staff Gmbh Systeme d'eclairage
US6139169A (en) 1999-04-01 2000-10-31 Caferro; Ronald N. Encased louvers for outdoor lighting

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2143148A (en) * 1937-01-26 1939-01-10 Edwin F Guth Light shield
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
US2242872A (en) * 1939-07-08 1941-05-20 Holophane Co Inc Luminaire
US2971083A (en) * 1958-11-14 1961-02-07 Gen Electric Low brightness louver
US3179797A (en) * 1962-01-02 1965-04-20 Holophane Co Inc Device for controlling glare in luminaire
US3600570A (en) * 1967-12-11 1971-08-17 Mitsubishi Rayon Co Low glare louver
DE29716999U1 (de) * 1997-09-23 1998-01-08 Semperlux GmbH Lichttechnisches Werk, 12277 Berlin Prismierte Lamellen zur Abblendung und Lenkung von Licht
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
US7001057B2 (en) * 2001-05-23 2006-02-21 Ivoclar Vivadent A.G. Lighting apparatus for guiding light onto a light polymerizable piece to effect hardening thereof
TW531903B (en) * 2001-06-25 2003-05-11 Koninkl Philips Electronics Nv Substrate for an electroluminescent display device and method of manufacturing the same
ITFI20020077U1 (it) * 2002-07-19 2004-01-19 Targetti Sankey Spa Griglia antiabbagliamento per sorgenti luminose tubolari

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT308901B (de) 1971-08-27 1973-07-25 Zumtobel Kg Leiste zur Bildung von Lichtrastern
EP0286890A2 (fr) 1987-04-13 1988-10-19 Zumtobel Aktiengesellschaft Ecran pour armature à lampe fluorescente
WO1999040364A1 (fr) 1998-02-05 1999-08-12 Zumtobel Staff Gmbh Systeme d'eclairage
US6139169A (en) 1999-04-01 2000-10-31 Caferro; Ronald N. Encased louvers for outdoor lighting

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
EP1608909A1 (fr) 2005-12-28
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
EP2295851B1 (fr) 2017-03-15
WO2004088203A1 (fr) 2004-10-14
EP1608909B1 (fr) 2015-02-25

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