EP1338845B1 - Luminaire - Google Patents

Luminaire Download PDF

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Publication number
EP1338845B1
EP1338845B1 EP03007163A EP03007163A EP1338845B1 EP 1338845 B1 EP1338845 B1 EP 1338845B1 EP 03007163 A EP03007163 A EP 03007163A EP 03007163 A EP03007163 A EP 03007163A EP 1338845 B1 EP1338845 B1 EP 1338845B1
Authority
EP
European Patent Office
Prior art keywords
optical element
lamp
reflector
microprisms
light
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.)
Expired - Lifetime
Application number
EP03007163A
Other languages
German (de)
English (en)
Other versions
EP1338845A3 (fr
EP1338845A2 (fr
Inventor
Günther Dr. Sejkora
Jürg Dipl.-Ing. Zumtobel
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 Lighting GmbH Austria
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
Priority claimed from DE19923225A external-priority patent/DE19923225B4/de
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP1338845A2 publication Critical patent/EP1338845A2/fr
Publication of EP1338845A3 publication Critical patent/EP1338845A3/fr
Application granted granted Critical
Publication of EP1338845B1 publication Critical patent/EP1338845B1/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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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
    • F21Y2113/00—Combination of light sources

Definitions

  • the present invention relates to a luminaire with a reflector and two optical elements with a microprism structure for limiting the exit angle of the light beams from the luminaire according to the preamble of patent claim 1.
  • optical elements of the above type is to be achieved that the exit angle of light rays from the lamp is limited, i. is less than a predetermined threshold exit angle to reduce glare to the viewer.
  • such an optical element also causes mechanical protection of the lamp and in particular of the lamp inside the lamp.
  • Such an optical element is for example from the Austrian patent AT-B-403,403 known.
  • the known optical element on its lamp side facing the lamp in rows and rows arranged pyramidal profiles 2, so-called microprisms, which are formed as a truncated pyramid starting from a plate-shaped core 3 and a parallel to the base surface (light exit surface) of the core 3 lying upper boundary surface (light entrance surface) have.
  • the entire optical element 1 consists entirely of a transparent or transparent material.
  • the known luminaire 4 has a lamp 5, such as a fluorescent tube or the like, a reflector housing 6 surrounding the lamp 5 and an optical element 1.
  • the optical element 1 also consists of a plate-shaped core 3 of transparent material, which is occupied on one side with microprisms 2, which taper to form furrows 7 - starting from its root, wherein the entirety of the micro-prism cover surfaces, the light entry surface. 8 forms.
  • lenses 9 are provided on the other side of the core 3, which forms the light exit surface.
  • a luminaire with a lamp, a reflector surrounding the lamp and an optical element of the type described above arranged in the emission direction in front of the lamp is known, for example, from US Pat EP 0 911 577 A2 known.
  • the JP-A-10 106319 describes a similar luminaire in which two optical elements are arranged one behind the other in the emission direction, the microprism structures of these optical elements being aligned parallel to one another.
  • the WO 96/10148 again shows an arrangement in which two optical elements are arranged one behind the other, wherein the micro-prism structure of the one optical element is aligned transversely to the micro-prism structure of the other optical element.
  • the American Patent US 5,863,114 on the other hand shows a light-emitting panel unit with a light source and a prism plate.
  • the use of the correspondingly designed optical element ensures glare-free illumination for the viewer, the brightness distribution of the light via the optical element is not uniform, since more light beams are coupled into the optical element in the vicinity of the lamp than, for example in the edge regions of the optical element.
  • the lamp is not directly visible through the optical element, but due to the greater brightness, its position can at least be guessed by the viewer.
  • the WO 95/12782 In order to achieve a uniform light emission of the lighting arrangement, it is for example from the WO 95/12782 known to couple light from a lamp laterally in a light guide, which transports the light mainly parallel to its light exit surface. On the light exit surface of the light-guiding element, a micro-prism structure is attached, which on the one hand enables decoupling of the light from the light guide and, on the other hand, limits the exit angle of the illumination arrangement. It should be noted, however, that in the WO 95/12782 described backlight lighting for displays or other displays and for room lighting is only partially suitable.
  • the luminaire according to the invention has a total of two optical elements, which have the same structure and whose microprisms each have an elongated structure, at least one lamp and a reflector.
  • the second optical element is arranged parallel to the first optical element, wherein the microprisms of the second optical element extend transversely to the microprisms of the first optical element, i. the two optical elements with respect to the extension direction of their microprisms are rotated against each other by 90 °.
  • two elongated and mutually parallel lamps are provided which are arranged laterally offset outwards relative to the emission opening, wherein the reflector is arranged and shaped with respect to the lamps such that essentially only light beams reflected at the reflector leave the emission opening through the optical elements can.
  • Fig. 5 an embodiment of the luminaire according to the invention is shown schematically.
  • the optical elements used in these luminaires are in Fig. 4 shown.
  • the first embodiment according to Fig. 3 which is not the subject of the claims, shows a luminaire 10 with two elongated lamps 11, such as fluorescent tubes.
  • the lamps 11 are enclosed by a corresponding reflector 12, which has an emission opening 13 on its underside.
  • the reflector 12 may either serve itself as a housing of the luminaire or be arranged and fixed in a corresponding (not shown) luminaire housing.
  • an optical element 14 is used, which essentially corresponds to the in Fig. 1 corresponds to the known element shown.
  • the optical element 14 arranged in or in front of the emission opening 13 serves for the deflection of light rays 15 entering and exiting therefrom, such that their exit angle is limited, ie smaller than a predetermined limit exit angle of approximately 60-70 °.
  • the optical element 14 a plate-shaped core 16 of transparent material, such as acrylic glass, which is occupied on one side with microprisms 17, which tapers to form furrows 18 - starting from its root, the entirety of Micro-prism cover surfaces, the light entrance surface and the other side of the core 17 forms the light exit surface.
  • the microprisms 17 are arranged like a matrix in rows and rows (cross structure).
  • the optical element 12 conversely in the luminaire 10.
  • the entirety of the microprism cover surfaces forms the light exit surface and the other side of the core 17 forms the light entry surface.
  • the lamps 11 are arranged laterally offset from the emission opening 13 or the optical element 14. Further, the reflector 12 is arranged and shaped with respect to the lamps 11 so that the light beams 15 radiated from the lamps 11 can not be emitted directly through the emission opening 13, ie substantially only at the reflector 12 reflected light rays 15 can leave the emission opening 13 through the optical element 14.
  • the inside of the reflector 12 is formed diffusely reflective, such as painted white or coated with highly reflective Teflon.
  • the construction of the microprismatic 17 optical element 14, in a known manner, provides glare control of the light rays to the viewer, i. A limitation of the exit angle of the light rays 15 from the lamp 10. Due to the fact that no or almost no light beams are emitted directly from the lamps 11 through the optical element 14, but substantially only on the inside of the reflector 12 reflected light beams 15 in the optical element 14 einkoppeln and leave this down again, one reaches a uniform or at least almost uniform illumination of the entire surface of the optical element 14. This effect is further enhanced by a diffusely reflecting inside of the reflector.
  • the second embodiment differs from the first embodiment in that a total of two optical elements 14-1 and 14-2 are arranged in or in front of the emission opening 13 of the reflector 12. Moreover, the structure of the lamp 10, ie in particular the arrangement of the lamps 11 and the reflector 12, that of the first embodiment.
  • both optical elements 14-1, 14-2 of the luminaire 10 are according to Fig. 4 built up.
  • the microprisms 17 of this embodiment have an elongated structure.
  • the microprisms extend in an extending direction of the optical element over the substantially entire length of the optical element 10 (longitudinal structure) while being arranged consecutively in the other direction.
  • a transverse suppression perpendicular to the extension direction of the microprisms 17 is achieved.
  • the extension direction of the microprisms 17 of the one optical element 14-1 being rotated by 90 ° with respect to the extension direction of the microprisms 17 of the other optical element 14-2 is, ie the microprisms of the first optical element 14-1 extend transversely to the microprisms of the second optical element 14-2, the same effect is achieved as with a single cross-sectional optical element 14.
  • the production of the optical elements 14-1, 14-2 with a longitudinal structure is simpler and thus less expensive than the production of the optical elements 14 with a cross-shaped structure.
  • Fig. 5 is the first optical element 14-1 arranged such that the elongated microprisms 17 is aligned parallel to the longitudinal axis of the lamps 11, while the extension direction of the microprisms 17 of the second optical element 14-2 transverse to the longitudinal axis of the lamps 11 extends.
  • the optical elements 14-1 and 14-2 may also be mounted in reverse order in or in front of the emission aperture 13 of the reflector 12, without this having any influence on the optical properties of the entire assembly.
  • the spaces 18 between the adjacent microprisms 17 are preferably covered with a reflective material 19, such as a high reflectivity metal foil. This ensures that only the light which strikes from the lamps 11 via the reflector 12 to the top surfaces of the microprisms 17 forming the light entry surface is emitted by the optical element 14-1, 14-2. The incident on the cover 19 light rays are reflected back into the interior of the lamp 10 and reflected back from the inside of the reflector 12 in the direction of the optical element 14-1, 14-2.
  • a reflective material 19 such as a high reflectivity metal foil.
  • the efficiency of the optical element 14-1, 14-2 can be further increased.
  • optical element 14-1, 14-2 of Fig. 4 These measures can, of course, in all other embodiments of the lamp, in particular in the embodiments of Fig. 3 and 6 , be applied in an analogous manner.
  • the reflector 12 has on its underside an emission opening 13, which is closed by an optical element 14-1.
  • the optical element 14-1 corresponds to that in FIG Fig. 4 Thus, in particular, it has a longitudinal structure of the microprisms 17.
  • the optical element 14-1 is, as in FIG Fig. 6 shown oriented in such a way that the microprisms 17 extend transversely to the longitudinal axis of the lamp 11.
  • the inside of the reflector 12 is designed to be reflective and the lamp 11 is not offset laterally but is arranged centrally above the optical element 14-1. Nevertheless, even in this case, uniform illumination of the optical element 14-1 and glare reduction of the light rays, i.
  • the optical element 14-1 due to the longitudinal structure of the microprisms 17 transversely to the longitudinal axis of the lamp provides for a glare parallel to the longitudinal axis of the lamp, and a uniform illumination parallel to the longitudinal direction of the lamp is given automatically by the elongated shape of the lamp.
  • the optical elements 14-1, 14-2 can also be arranged in or in front of the emission opening 13 of the luminaire 10 in the case of the luminaires 10 according to the second and third embodiments, so that either the entirety of the microprism cover surfaces occupy the light entry surface and the other side of the core forms the light exit side or vice versa.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Road Signs Or Road Markings (AREA)
  • Finger-Pressure Massage (AREA)

Claims (2)

  1. Eclairage, avec au moins une lampe (11); un réflecteur (12) entourant la lampe, dont la face intérieure orientée vers la lampe est réalisée pour être réfléchissante, et qui comporte une ouverture de diffusion (13) pour la diffusion de la lumière ; et deux éléments optiques (14-1, 14-2) disposés dans ou devant l'ouverture de diffusion (13) pour la déflexion des rayons lumineux (15) qui pénètrent dans ceux-ci et en ressortent, de telle manière que leur angle de sortie soit inférieur à un angle limite de sortie défini, les deux éléments optiques (14-1, 14-2) comportant une âme (16) en forme de plateau en matériau transparent dont un côté est occupé par des microprismes (17) qui ont une structure oblongue et s'amincissent - à partir de leur racine - en formant des sillons (18), les deux éléments optiques (14-1, 14-2) étant disposés parallèlement entre eux et les microprismes (17) du premier élément optique (14-1) s'étendant transversalement aux microprismes (17) de l'autre élément optique (14-2),
    caractérisé en ce que deux lampes (11) oblongues et alignées parallèlement entre elles sont prévues, lesquelles sont décalées latéralement vers l'extérieur par rapport à l'ouverture de diffusion (13), et en ce que le réflecteur (12) est disposé et formé par rapport aux lampes (11) de telle manière que seuls les rayons lumineux réfléchis par le réflecteur (12) puissent essentiellement sortir de l'ouverture de diffusion (13) en traversant les éléments optiques (14-1, 14-2).
  2. Eclairage selon la revendication 1, caractérisé en ce que les sillons (18) ente les microprismes (17) du premier et/ou du deuxième élément optique (14-1, 14-2) sont recouverts par un matériau réfléchissant (19) ou comblés par un matériau réfléchissant, pour empêcher une pénétration des rayons lumineux dans les microprismes (17) par les sillons (18).
EP03007163A 1999-05-20 2000-04-19 Luminaire Expired - Lifetime EP1338845B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19923225A DE19923225B4 (de) 1999-05-20 1999-05-20 Optisches Element zur Umlenkung von Lichtstrahlen und Herstellungsverfahren
DE19923225 1999-05-20
DE29909282U 1999-05-27
DE29909282U DE29909282U1 (de) 1999-05-20 1999-05-27 Leuchte
EP00929391A EP1179158B1 (fr) 1999-05-20 2000-04-19 Dispositif d'eclairage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP00929391A Division EP1179158B1 (fr) 1999-05-20 2000-04-19 Dispositif d'eclairage

Publications (3)

Publication Number Publication Date
EP1338845A2 EP1338845A2 (fr) 2003-08-27
EP1338845A3 EP1338845A3 (fr) 2007-01-17
EP1338845B1 true EP1338845B1 (fr) 2009-08-19

Family

ID=26053450

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00929391A Expired - Lifetime EP1179158B1 (fr) 1999-05-20 2000-04-19 Dispositif d'eclairage
EP03007163A Expired - Lifetime EP1338845B1 (fr) 1999-05-20 2000-04-19 Luminaire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00929391A Expired - Lifetime EP1179158B1 (fr) 1999-05-20 2000-04-19 Dispositif d'eclairage

Country Status (12)

Country Link
US (1) US6945670B2 (fr)
EP (2) EP1179158B1 (fr)
JP (1) JP2003500813A (fr)
AT (1) ATE244852T1 (fr)
AU (1) AU765828B2 (fr)
CA (1) CA2374023C (fr)
DK (1) DK1179158T3 (fr)
ES (1) ES2202127T3 (fr)
NO (1) NO20015632D0 (fr)
NZ (1) NZ515195A (fr)
PT (1) PT1179158E (fr)
WO (1) WO2000071927A1 (fr)

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US8262253B2 (en) * 2007-05-02 2012-09-11 Luminator Holding Lp Lighting method and system
WO2009067844A1 (fr) * 2007-11-28 2009-06-04 Chihua Shieh Dispositif d'éclairage à diode électroluminescente
US8020440B2 (en) * 2008-05-16 2011-09-20 Rosemount Aerospace Inc. System and method for providing high-range capability with closed-loop inertial sensors
US9301363B2 (en) 2008-09-24 2016-03-29 Luminator Holding Lp Methods and systems for maintaining the illumination intensity of light emitting diodes
CN105745489B (zh) * 2013-09-24 2019-06-28 飞利浦灯具控股公司 照明单元
US20170023211A1 (en) * 2013-12-16 2017-01-26 Philips Lighting Holding B.V. Flexible unobstructed beam shaping
CN104033766A (zh) * 2014-06-16 2014-09-10 顾钰锋 无闪烁照明灯
US10222029B2 (en) * 2014-09-30 2019-03-05 The Boeing Company Array-based lighting systems and methods of manufacturing
US10955108B2 (en) * 2016-06-28 2021-03-23 Opple Lighting Co., Ltd. Ceiling lamp

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Also Published As

Publication number Publication date
EP1338845A3 (fr) 2007-01-17
ES2202127T3 (es) 2004-04-01
JP2003500813A (ja) 2003-01-07
CA2374023C (fr) 2009-06-30
AU4749700A (en) 2000-12-12
NO20015632L (no) 2001-11-19
ATE244852T1 (de) 2003-07-15
NZ515195A (en) 2003-04-29
WO2000071927A1 (fr) 2000-11-30
EP1338845A2 (fr) 2003-08-27
PT1179158E (pt) 2003-09-30
DK1179158T3 (da) 2003-08-04
CA2374023A1 (fr) 2000-11-30
EP1179158B1 (fr) 2003-07-09
EP1179158A1 (fr) 2002-02-13
NO20015632D0 (no) 2001-11-19
AU765828B2 (en) 2003-10-02
US6945670B2 (en) 2005-09-20
US20020048168A1 (en) 2002-04-25

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