EP0217323A2 - Dispositif et procédé d'éclairage - Google Patents

Dispositif et procédé d'éclairage Download PDF

Info

Publication number
EP0217323A2
EP0217323A2 EP86113329A EP86113329A EP0217323A2 EP 0217323 A2 EP0217323 A2 EP 0217323A2 EP 86113329 A EP86113329 A EP 86113329A EP 86113329 A EP86113329 A EP 86113329A EP 0217323 A2 EP0217323 A2 EP 0217323A2
Authority
EP
European Patent Office
Prior art keywords
lamp
light
reflector
outlet opening
luminaire
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Withdrawn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
EP86113329A
Other languages
German (de)
English (en)
Other versions
EP0217323A3 (fr
Inventor
Friedrich-Wilhelm Thiekötter
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.)
Thorn Licht GmbH
Original Assignee
Thorn Licht 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 Thorn Licht GmbH filed Critical Thorn Licht GmbH
Publication of EP0217323A2 publication Critical patent/EP0217323A2/fr
Publication of EP0217323A3 publication Critical patent/EP0217323A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures
    • 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
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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

Definitions

  • the invention relates to a lamp according to the preamble of claim 1 and a lighting method.
  • the lamp or both lamps radiate into the upper and the lower half space with their maximum luminous fluxes, wedge-shaped side reflectors being arranged only in the interior of the housing on the two longitudinal side walls, between which the lamp or lamps are located.
  • This lamp shines with high light intensities both upwards and at angles from O to 45 ° downwards and, due to this downward luminous flux of high luminous intensity, causes highly disturbing reflections on reflective parts and surfaces of workplaces or the like, such as screens, desks, etc . if they are horizontal or not steeply inclined to the horizontal.
  • the lamp according to the invention avoids the disadvantages of the prior art mentioned and facilitates u. a. also coping with new visual tasks, such as those that resulted from the information being passed on by the new media via terminals.
  • the luminaire according to the invention enables low luminance levels on the underside of the lower cover, but with high efficiency and high light intensity in the above. ren half-space of the building in question or the like. Light reflex contrasts on specularly reflecting surfaces can be reduced better than before in all working planes illuminated by them, i.e. both in horizontal, as well as in working planes that are inclined and inclined, and even avoided as far as possible if desired. It can also be achieved that the underside of the lower cover of the lamp largely dissolves optically on the ceiling area illuminated by the upper light exit opening of the lamp, if, as can be preferred, the luminance of this ceiling area corresponds to the luminance of the underside of the cover of the approximates the lower light outlet opening of the lamp, d. H.
  • Luminances of approximately the same size are produced on both surfaces, the colors of these surfaces having these luminances being advantageously also approximately the same, so that no color contrasts occur.
  • the reflector assigned to the upper light exit opening which has a reflection characteristic that radiates broadly into the upper half-space, can also be referred to as a wide-reflecting reflector.
  • Both the upper and the lower light outlet opening of the lamp can each be a single continuous opening of the lamp, which essentially extends over its width and length, or the light outlet opening in question can also be divided into a plurality of partial openings, for example by webs or the like .
  • the excellent properties of the new luminaire and the new lighting process are particularly advantageous when it comes to illuminating screen workstations and desks, but they also bring advantages for other lighting tasks, such as lighting other workplaces or also lighting other areas, living rooms, rooms in hospitals etc.
  • the contrasts of reflections on surfaces illuminated by the luminaire, specularly reflecting surfaces of workplaces or the like are particularly low if, according to a development of the invention, it is provided that it is designed to produce a substantially uniform luminance distribution on the underside of the lower cover, zu The same purpose can be provided that it is designed for such a distribution of the lamp luminous flux emerging from the upper light outlet opening that a parallel, uniformly diffusely reflecting region, spaced apart, is acted upon by this luminous flux and only upper light outlet opening ceiling located above the luminaire receives an essentially uniform luminance distribution.
  • Reflex contrasts on specularly reflecting parts of workplaces or the like which are illuminated by the lamp can be counteracted even more if one provides that the housing of the lamp is at least partially transparent and preferably approximately the same color as the lower cover.
  • the advantageous properties of the luminaire according to the invention have a particularly strong effect if it is provided that its radiation into the upper half space is designed to be highly wide-angle, preferably extremely wide-angle, preferably with opening angles of the luminous flux emerging from the upper light outlet opening of approximately 130-165 °.
  • the luminaire according to the invention enables the illumination of rooms or room areas to be illuminated by it essentially by indirect lighting.
  • the lower light exit opening is preferably used essentially only to illuminate the diffusely scattering cover assigned to it for the purpose of reducing or causing the reflections caused by the lamp on reflective parts of the workplaces or the like illuminated by it, or. to make it appear weaker or less, or no longer disturbing, in particular to completely or largely suppress reflex contrasts.
  • it is particularly advantageous if a maximum of 10%, preferably a maximum of 5% of the useful luminous flux of the lamp is let through the lower cover and / or if on the underside of this cover the lower light outlet opening through its at least one lamp a medium one '' Luminance of max. approximately 200 cd / m 2 is generated.
  • the colors of the luminous flux emerging from the luminaire can expediently be approximately the same in order to avoid color contrasts.
  • the reflector of the lamp which is broadly reflecting in the upper half-space, can expediently be a high-performance reflector. Its reflective surface or surfaces can preferably be matt reflective or highly reflective or partially matt and partially highly reflective. Preferably, it can be translucent, which can be achieved in any suitable manner, for example through perforations, be they distributed uniformly or unevenly only partly mirroring, through slits and the like.
  • the reflector can be a perforated plate with a uniform perforation or with an uneven perforation. Also, if necessary, only one or more partial areas of the reflector can be translucent or contain translucent areas by the aforementioned or other measures.
  • the light transmittance is to be provided in such a way that the desired luminance results on the underside of the lower cover, it being particularly expedient to be able to provide an essentially uniform luminance distribution.
  • the light transmission of the reflector or its or its translucent areas can also be brought about by having a transparent, e.g. glass clear or diffusely scattering body, on the side facing the lamp or such a thin reflective coating is arranged that this coating allows part of the lamp luminous flux and only reflects the rest of the lamp luminous flux.
  • the reflector can expediently be designed in such a way that the lamp luminous flux emitted through the upper light exit opening on the illuminated ceiling area - assuming uniformly reflecting properties of this ceiling area - leads to such uniform luminance distribution that it is perceived by the human eye as approximately uniform.
  • the measure already described can advantageously be provided that the max. Luminance on this directly illuminated ceiling area corresponds at most to twice the mean luminance on this ceiling area.
  • the light diffusely transmitted through the lower light exit opening by at least one additional lamp below the reflector assigned to the upper light exit opening, so that this reflector can then be made opaque.
  • This additional at least one lamp can preferably be designed such that it emits light of the same color as the other at least one lamp.
  • the useful luminous flux caused by the additional lamp or lamps can usefully be much smaller, preferably max. 10%, in particular max. 5% of the total useful luminous flux of the luminaire.
  • This additional lamp or lamps can therefore expediently be lamps of low to very low power.
  • at least one separate reflector assigned to the lower light exit opening can also be assigned to them.
  • the lamp has one or more lamps, which may be straight or other fluorescent lamps. Other lamps, such as incandescent lamps or the like, are also possible.
  • the luminaire can be an elongated, straight luminaire or a round luminaire, a square luminaire or another suitable luminaire.
  • lamps 12 are suspended from rods, which extend horizontally and are arranged at a distance below the ceiling 9. They form an elongated, straight light band 13, which is located above the row of workplaces 11 shown.
  • the elongated lights 12 are the same among themselves and have approximately rectangular outlines.
  • the lights 12 are designed so that the reflections they can cause on all workbench levels on specularly reflecting parts are low-contrast and less or no longer disturb. The same applies to the lights shown in the other exemplary embodiments.
  • the lamp 12 shown in more detail in FIGS. 2 to 4 is symmetrical with respect to its parts which cause the light emission to its vertical longitudinal center plane 23 , so that it causes a symmetrical light distribution with respect to this longitudinal center plane 23 .
  • the lamp 12 has a straight, elongated, cuboid-like housing 14 which has two parallel, straight longitudinal side walls 15 and end walls 16 which are also arranged at right angles to this and also parallel to one another.
  • These longitudinal side and end walls 15, 16 can be opaque, for example made of metal, or the longitudinal side walls 15 and possibly also the end walls 16 can particularly advantageously also consist of transparent material, which will be explained in more detail below.
  • the luminaire housing 14 has a wide, rectangular, upper, fully open light outlet opening 20 and a wide, rectangular, lower light outlet opening 21, both of which are approximately the same width and the same length and are almost the same length and width as the luminaire housing 14 extend and each form a single, continuous, uninterrupted opening of the lamp housing 14.
  • a reflector 17 extending approximately over the length and width of the light exit openings 20, 21 is arranged horizontally, which has the constant trough-shaped profile shown over its length and is provided with many holes, preferably consisting of a perforated plate mirrored on the upper side 18 that can be perforated evenly or unevenly.
  • the proportion of holes and the hole distribution of the reflector 17 are made in such a way that the desired low luminance is created in all beam angles from 0 to 180 ° on the underside 27 of a lower cover 24.
  • a small proportion of the useful luminous flux of this lamp 12 is diffusely scattered through the lower light outlet opening 21, namely max. 10%, preferably max. 5%.
  • At least 90% of the useful luminous flux for indirect room lighting is therefore emitted through the upper, completely open light exit opening 20.
  • the colors of both light streams emerging through the openings 20, 21 can expediently be approximately the same in order to avoid color contrasts.
  • the useful luminous flux of the luminaire is its total luminous flux emitted, characterized by the luminaire operating efficiency.
  • the reflector 17 which is broadly reflecting in the upper half space, extends arched down over the entire upper light exit opening 20 and forms as shown asked, a translucent partition between the upper and lower light exit opening 2 0 , 21 this optically separating.
  • the light distribution curve of this luminaire 12 is shown in FIG. 9 and it can be seen how small the proportion of the luminous flux emitted completely diffusely through the lower cover 24 of the useful luminous flux of this luminaire 12 is.
  • the lamp luminous flux is generated by a single straight fluorescent lamp 19 which is arranged at a distance above the reflecting upper side 18 of the reflector 17 parallel to it in the vertical longitudinal center plane 23 of this lamp 12.
  • a single straight fluorescent lamp 19 which is arranged at a distance above the reflecting upper side 18 of the reflector 17 parallel to it in the vertical longitudinal center plane 23 of this lamp 12.
  • the fluorescent lamp 19 is located at a relatively short distance below the wide upper light outlet opening 20.
  • the opening angle of the light flux emerging through the upper light outlet opening 20 is approximately 160 ° in this advantageous exemplary embodiment, so that this lamp shines extremely broadly in the upper half space.
  • the lower light exit opening 21 is completely covered by the flat, trough-shaped cover 24 which is level on the floor.
  • This cover 24 is made of transparent, diffusely scattering material, preferably opal glass.
  • This lower cover 24 forms a diffuser and can optionally also be ornamented and / or prismatized.
  • the underside 18 'of the reflector 17 is turned towards it and does not need to have any reflective properties.
  • the holes in the reflector 17 can have, for example, diameters of approximately 1-4 mm or can be larger or smaller or also non-round holes.
  • the holes can be evenly distributed or to influence the luminance distribution it is also often expedient to make the perforation of the reflector 17 non-uniform over its width and / or length or to make only one or more partial areas of the reflector translucent through holes or other measures. If necessary. it is also possible to form light passages of the reflector by means of slots which open out on the sides of the reflector or to make the mirroring weakly translucent.
  • the reflector 17 can expediently be a high-performance reflector, particularly advantageously consist of matt anodized aluminum. However, its top 18 can also be wholly or partially high-gloss.
  • the upper light exit opening 20 can, if desired, also be provided with a crystal-clear cover which, if desired, can also have a symmetrical or asymmetrical prism structure.
  • This lamp 12 is preferably formed by appropriate design of the reflector 17 and arrangement of the lamp 19 so that it generates approximately uniform luminance distribution of the lamp luminous flux component reaching this cover 24 on the flat underside 27 of the lower cover 24, so that the human eye detects the luminance of the latter bottom surface of the cover when the lamp and lamps are switched on is felt to be approximately evenly distributed.
  • the reflector 17 is also designed so that the lamp light emitted through the upper light exit opening 20 on the ceiling area located at a distance of, for example, 40 to 100 cm or even more above the lamp 12 and directly illuminated by this lamp 12, is uniformly diffusely reflecting is formed, also produces approximately uniform luminance distribution for the human eye,
  • the ratio of the luminance of the irradiated region of the ceiling 9 - to the luminance of the underside 27 of the bottom cover 24 may, for example, through the perforations of the reflector 17, by the reflectivity of the irradiated area of the ceiling 9 and by the distance of the lamp 12 from the ceiling. 9 can be set so that the max. Luminance of the area of the ceiling 9 directly illuminated by the lamp 12 approximately corresponds to the average luminance of the underside 27 of the lower cover 24, which is also illuminated by the lamp 19 of this lamp 12, so that these two lamps do not differ or hardly differ for the human eye. As a result, the switched-on lamp 12 can largely dissolve optically for the viewer.
  • This lamp 12 is formed in all the components influencing the light fluxes emitted by it, such as upper and lower light exit openings 20, 21, cover 24, reflector 17 and lamp 19 symmetrically to its vertical longitudinal center plane 23, so that its light distribution is also symmetrical to this longitudinal center plane 23 .
  • the outer peripheral wall 15, 16 of the housing 14 can also be expediently formed symmetrically to this longitudinal center plane 23.
  • a further embodiment of a lamp 12 is shown, but which has an asymmetrical light distribution.
  • the perforated reflector 17 having the profile shown is designed asymmetrically to the longitudinal center plane 23 of the straight lamp 12, which has a wide beam asymmetrical in the upper half space, as shown.
  • the only straight fluorescent lamp 19 is located within the reflector 17 at a distance from it.
  • the reflector 17 and the possibly structured, lower, diffusely scattering cover 24, which covers the lower light exit opening 21 and can preferably consist of opal glass, are preferably designed such that the lamp 19 on the underside 27 of the lower cover 24 in turn is approximately uniform Luminance distribution is generated.
  • the light emitted through the upper light exit opening 20 produces an essentially uniform luminance distribution on this illuminated ceiling area on the area of the horizontal ceiling that runs perpendicular to the vertical longitudinal center plane 23 of this lamp 12, with uniformly diffusely reflecting properties of this ceiling area.
  • the upper light exit opening 20 can be open or covered by a crystal-clear cover with or without a prism structure.
  • the opening angle ⁇ of the directed into the upper hemisphere light flux is in this embodiment about 140 0, so that this reflector 17 has wide-beam characteristic. It also forms a translucent partition that optically separates the upper and lower light exit openings 20, 21.
  • the luminance of the area of the ceiling illuminated by this lamp 12, which is located at a distance above the horizontally arranged lamp 12, and the lower cover 24, which is also illuminated by the lamp 19, can in turn easily be made approximately the same size, so that this lamp can also be made 12 can again optically dissolve as far as possible vis-à-vis the illuminated ceiling area and again completely or largely disruptive light reflections on specularly reflecting parts of workplaces illuminated by this lamp or the like can be avoided.
  • This lamp 12 also has high efficiency.
  • the luminaire 12 shown in FIGS. 7 and 8 has a circular outline. Its components, which determine the light emission through the upper circular light exit opening 20 and the lower, likewise circular light exit opening 21, are approximately rotationally symmetrical with respect to the vertical longitudinal central axis 23 'to the lamp, so that this lamp 12 has a rotationally symmetrical light distribution.
  • the hole te, approximately conical, an obtuse opening angle reflector 17 is designed to be broadly reflective so that the luminance distribution of the illuminated area of the relevant ceiling is again approximately uniform if this ceiling area has uniformly diffusely reflecting properties, as is the luminance distribution of the lamp light on the underside 27 of the lower flat, transparent, diffusely scattering cover 24 of the lower light exit opening 21 is also preferably approximately uniform.
  • these two luminances on the illuminated ceiling area of the ceiling and the lower cover 24 can be made approximately the same size, be it by designing the reflector 17 and / or the reflectance of the ceiling area in question and / or the distance of this lamp 12 from the ceiling , so that this lamp 12 can also largely optically dissolve vis-à-vis the ceiling area illuminated by it and on reflective parts in work planes of its illuminated workplaces can be avoided as far as possible or completely disruptive light reflections or contrasts.
  • the reflector 17, arching downward over the cambered upper light outlet opening 20 forms a translucent intermediate wall that optically separates the upper light outlet opening 20 from the lower light outlet opening 21.
  • the only lamp 19 is an incandescent lamp, which is arranged in the central axis 23 'of this lamp within the upwardly concave reflector 17, or another quasi-point light source. Provision can also be made to arrange an approximately circularly curved fluorescent lamp instead of the incandescent lamp 19.
  • the lamp can also have a square, oval or other suitable outline.
  • the cover 24 is formed by the reflector 17, preferably only by a region of the reflector 17 or possibly also by the entire reflector 17.
  • An embodiment of such a lamp is shown in Fig. 10, which shows a variant of the lamp according to FIGS. 2 to 4 in cross section.
  • the flat bottom of the reflector 17 of this lamp 12 here also forms the cover 24 of the lower light outlet opening 21 of the housing 14.
  • the housing 14 is correspondingly flatter and therefore more space-saving and less expensive than in FIG. 2.
  • the self-supporting body 41 of the trough-shaped reflector 17 can be expedient consist of transparent, light diffusely scattering material, for example of opal glass, which is provided on its top 18 with a coating 40 that completely or partially mirrors it, such that Although this coating 40 reflects most of the lamp luminous flux impinging on it, a part of the lamp luminous flux is transmitted, which thus transmits the body 41 diffusely, so that this cover 24 formed by the reflector 17, like the covers 24 of the other exemplary embodiments in operation diffuse lights up.
  • the coating 40 can, for example, be a homogeneous layer that is partially transparent to light, or it can have, for example, holes or other recesses through which lamp light can reach the body 41 directly.
  • This reflector 17 also has in the upper half wide beam reflection characteristics. Since the reflector 17 also forms the cover of the lower light exit opening 21, the housing 14 can also be made flatter in such a way that the reflector protrudes downward beyond the light exit opening 21.
  • the lamp 12 shown in cross section according to FIG. 11 differs from that according to FIGS. 2 to 4 essentially in that the lamp in the upper half wide reflecting reflector 17 is arranged between it and the lower cover 24, one or more fluorescent lamps 19 'parallel to the fluorescent lamp 19, for example expediently a fluorescent lamp of the same length or possibly also a plurality of shorter fluorescent lamps 19' arranged in alignment, which preferably have or can have a much lower total output than the lamp 19
  • This additional lamp or lamps 19 'can also, if necessary, also reduce their emitted light output partially darkened and / or a brightness switch can be provided for them, by means of which the luminance on the underside 27 of the cover 24 can be adapted to the luminance of the area of the relevant ceiling that is illuminated by this lamp 12.
  • the upper lamp 19 can additionally or solely be assigned a brightness switch for adjusting the luminance.
  • a brightness switch for the lower lamp 19 ' also has the advantage that, if necessary, the lower lamp can also be used to illuminate workplaces or the like. In fact, this higher luminance can then generate stronger light reflections and light reflex contrasts on specularly reflecting parts of such workplaces or the like, which could be very annoying in many applications, but in applications where it is not important or no specularly reflecting surfaces at the workplaces or the like. are present, then operate this lamp with a stronger luminous flux which is diffusely emitted into the lower half-space and also reduce it strongly again by means of the brightness switch.
  • the reflector 17 optically separates the luminous flux emitted into the upper half-space, preferably with high light intensity, through the upper light outlet opening 20 from the luminous flux diffusely transmitted through the lower cover 24 into the lower half-space.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP86113329A 1985-10-02 1986-09-27 Dispositif et procédé d'éclairage Withdrawn EP0217323A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3535216 1985-10-02
DE3535216 1985-10-02

Publications (2)

Publication Number Publication Date
EP0217323A2 true EP0217323A2 (fr) 1987-04-08
EP0217323A3 EP0217323A3 (fr) 1989-03-08

Family

ID=6282603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86113329A Withdrawn EP0217323A3 (fr) 1985-10-02 1986-09-27 Dispositif et procédé d'éclairage

Country Status (1)

Country Link
EP (1) EP0217323A3 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726420A1 (fr) * 1995-02-10 1996-08-14 ZUMTOBEL LICHT GmbH Armature lumineuse, en particulier pour locaux humides, à boîtier fermé en deux parties
EP0959294A3 (fr) * 1998-05-18 2001-04-11 Herbert Waldmann GmbH & Co. Appareil d'éclairage indirect à faisceau large
EP1045195A3 (fr) * 1999-04-15 2002-01-30 Zumtobel Staff GmbH Luminaire
WO2002063407A1 (fr) * 2001-02-08 2002-08-15 Hermetic Light Aps Dispositif destine a produire une lumiere multicolore et systeme de regulation permettant de reguler le fonctionnement de ce dispositif
EP1245899A1 (fr) * 2001-03-28 2002-10-02 Spittler Lichttechnik Lampe plate pour montage sur plafonds, murs et poteaux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740359C (de) * 1942-01-03 1943-10-18 Zeiss Ikon A G Goerz Werk Leuchte mit zwei oder mehreren Reflektoren
US3201582A (en) * 1963-07-03 1965-08-17 Al L Siegel Two-way hospital light
US4280170A (en) * 1979-09-26 1981-07-21 General Electric Company Luminaire
US4450513A (en) * 1982-01-25 1984-05-22 Sterner Lighting Systems Incorporated Lighting fixture for opposite direction reflection
US4472767A (en) * 1981-12-23 1984-09-18 Mcgraw-Edison Company Reflector assembly for indirect or semi-indirect lighting fixture
DE3318264A1 (de) * 1983-05-19 1984-11-22 Dr. Ing. Willing GmbH, 1000 Berlin Leuchte mit perforiertem hochglanzreflektor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740359C (de) * 1942-01-03 1943-10-18 Zeiss Ikon A G Goerz Werk Leuchte mit zwei oder mehreren Reflektoren
US3201582A (en) * 1963-07-03 1965-08-17 Al L Siegel Two-way hospital light
US4280170A (en) * 1979-09-26 1981-07-21 General Electric Company Luminaire
US4472767A (en) * 1981-12-23 1984-09-18 Mcgraw-Edison Company Reflector assembly for indirect or semi-indirect lighting fixture
US4450513A (en) * 1982-01-25 1984-05-22 Sterner Lighting Systems Incorporated Lighting fixture for opposite direction reflection
DE3318264A1 (de) * 1983-05-19 1984-11-22 Dr. Ing. Willing GmbH, 1000 Berlin Leuchte mit perforiertem hochglanzreflektor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726420A1 (fr) * 1995-02-10 1996-08-14 ZUMTOBEL LICHT GmbH Armature lumineuse, en particulier pour locaux humides, à boîtier fermé en deux parties
EP0959294A3 (fr) * 1998-05-18 2001-04-11 Herbert Waldmann GmbH & Co. Appareil d'éclairage indirect à faisceau large
EP1045195A3 (fr) * 1999-04-15 2002-01-30 Zumtobel Staff GmbH Luminaire
WO2002063407A1 (fr) * 2001-02-08 2002-08-15 Hermetic Light Aps Dispositif destine a produire une lumiere multicolore et systeme de regulation permettant de reguler le fonctionnement de ce dispositif
EP1245899A1 (fr) * 2001-03-28 2002-10-02 Spittler Lichttechnik Lampe plate pour montage sur plafonds, murs et poteaux

Also Published As

Publication number Publication date
EP0217323A3 (fr) 1989-03-08

Similar Documents

Publication Publication Date Title
EP1378771B1 (fr) Eclairage intérieur
EP1043542B1 (fr) Système d' éclairage pour installation au plafond ou au mur d' une pièce
DE10006410A1 (de) Leuchte
EP1154200A2 (fr) Distributeur de lumière pour un système d'éclairage, système d'éclairage et utilisation d' un système d'éclairage
EP0201926A1 (fr) Dispositif d'éclairage indirect
EP1700063A1 (fr) Lampe encastree
EP2112426A2 (fr) Eclairage doté d'une source lumineuse étirée en longueur et d'un élément d'éclairage également étiré en longueur
EP1257769B1 (fr) Dispositif d'eclairage
DE4336023A1 (de) Reflektorleuchte
EP0677697B1 (fr) Appareil d'éclairage pour plan de travail
DE19923224A1 (de) Beleuchtungsanordnung zur Anbringung an der Decke oder einer Wand eines Raumes
EP0217323A2 (fr) Dispositif et procédé d'éclairage
EP2258978B1 (fr) Luminaire avec une glace de fermeture transparente
EP0496921B1 (fr) Lampe
DE3030080C2 (de) Langgestreckte Arbeitsplatzleuchte
DE102006045745A1 (de) Stehleuchte
DE3632912A1 (de) Leuchte und beleuchtungsverfahren
DE102018119606A1 (de) Optisches Element für eine Leuchte, insbesondere Büroleuchte, sowie Leuchte
EP1843082B1 (fr) Plafonnier, en particulier pour utilisation dans un couloir
DE3902494A1 (de) Indirekte spiegelleuchte
DE10254170B4 (de) Beleuchtungssystem und Beleuchtungsanordnung
EP1045196A2 (fr) Dispositif d'éclairage avec une structure porteuse
EP0496920B1 (fr) Appareil d'éclairage
EP4279799A1 (fr) Lampe pour bureau ou lampadaire pour postes de travail
AT17680U1 (de) Anordnung zur Lichtabgabe und Leuchte

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THORN LICHT GMBH

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19881003

RIN1 Information on inventor provided before grant (corrected)

Inventor name: THIEKOETTER, FRIEDRICH-WILHELM