EP0219255A2 - Leuchten - Google Patents

Leuchten Download PDF

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Publication number
EP0219255A2
EP0219255A2 EP86307440A EP86307440A EP0219255A2 EP 0219255 A2 EP0219255 A2 EP 0219255A2 EP 86307440 A EP86307440 A EP 86307440A EP 86307440 A EP86307440 A EP 86307440A EP 0219255 A2 EP0219255 A2 EP 0219255A2
Authority
EP
European Patent Office
Prior art keywords
region
strip
luminaire according
luminance
upper region
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
EP86307440A
Other languages
English (en)
French (fr)
Other versions
EP0219255A3 (en
EP0219255B1 (de
Inventor
Brian Morgan
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.)
WHITECROFT PLC
Original Assignee
WHITECROFT PLC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26289863&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0219255(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB858524749A external-priority patent/GB8524749D0/en
Priority claimed from GB858524748A external-priority patent/GB8524748D0/en
Application filed by WHITECROFT PLC filed Critical WHITECROFT PLC
Priority to AT86307440T priority Critical patent/ATE85413T1/de
Publication of EP0219255A2 publication Critical patent/EP0219255A2/de
Publication of EP0219255A3 publication Critical patent/EP0219255A3/en
Application granted granted Critical
Publication of EP0219255B1 publication Critical patent/EP0219255B1/de
Anticipated expiration legal-status Critical
Revoked 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21V7/00—Reflectors for light sources
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • 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

  • This invention relates to light fittings and is particularly concerned with luminaires using reflector systems which incorporate one or more fluorescent lighting tubes.
  • direct ratio is meant the proportion of light directly reaching the working plane to the total emitted by the luminaires.
  • the reflectors are generally of specular (mirror finish) electro-brightened aluminium and often wrap completely around the tube.
  • Crossblades to give axial light control used to be made of a specially extruded aluminium section designed to have a low brightness.
  • Today an increasing number of reflectors have fabricated curved wedge-shaped crossblades of reflector material. These crossblades ensure a low brightness view from all directions around the luminaire.
  • specular reflector material gives the luminaire a "dark hole" appearance from distant viewing angles: indeed the luminaire does not appear to be lit at all.
  • An alternative is to use more commercial grades of reflector material which have brushed or lustre finishes. This type of finish gives the luminaire some luminosity so that the luminaire appears to be lit. It is said that room users prefer to see where the lighting actually comes from, so the lustre material would seem to be a better choice.
  • the modern luminaire has a wide light distribution and a sharp cut-off.
  • the sharp cut-off prevents a direct view of the tube at long viewing angles and theoretically gives a good control of glare. Indeed, these luminaires are often referred to as "low brightness”.
  • the modern reflector luminaire has serous faults which are generally ignored if the design criteria of high direct ratio and energy effectiveness have been achieved.
  • the use of computers and VDU's in offices has further complicated the situation but provided that the luminaire conforms with the cut-off recommendations of current lighting codes such as the CIBSE memorandum TM6 entitled "Lighting for Visual Display Units" the specifier is satisfied.
  • T8 tube The introduction of the T8 tube has made matters worse. With this tube it is easier to direct light but reflector contours are now much more critical and small changes of contour or of tube position produce large changes in light distribution. Distributions are more peaky, particularly if they are "batwing". The result is a distribution that is so strongly directional that modelling is over-emphasised and very strong. Much higher tube luminance strengthens the modelling, but also ensures that reflected highlights in the space (sparkle) are now over bright, if not glaring.
  • the sharp cut-off itself can be very annoying. In installations with low ceiling heights and with luminaires at maximum centres (whilst the illuminance at working plane level will be designed to be even) the illuminance at higher levels will vary. Because the cut-off is sharp and the lighting strongly directional, a person walking through the space will find the lighting very odd, for he will experience alternate zones of light and shadow whilst the floor will appear evenly lit.
  • the modern reflector luminaire needs a complete re­design to eliminate the defects.
  • the distribution needs to be broad and without significant peaks. It should be softer, more diffuse, with controlled light at higher angles.
  • the cut-off should be less pronounced which will improve the visual appearance of the space. There should be more inter-reflection of light within the space and highlights should be reduced so that contrasts will be softer and the hard appearance of the lighting will have gone.
  • the present invention therefore aims to provide a luminaire for a reflector system which eliminates the above-mentioned defects of existing luminaires.
  • a luminaire with a reflector system which comprises a first reflective upper region which is designed to reflect light from a light tube and a second reflective lower region having lower luminance than the upper region, wherein the said upper and lower regions are interconnected by an intermediate region having a reflecting surface which has an effective luminance between the luminance of the upper and lower regions.
  • the upper region of the reflector should desirably be located above and to one side of the light tube.
  • the luminaire according to the invention may comprise a housing containing the light tube and two strips arranged to be located on either side of the light tube, the strips extending substantially the length of the light tube and each strip comprising an upper region and a lower region interconnected by an intermediate region having intermediate luminance.
  • the upper region, intermediate region and lower region of each strip may be provided on a single integral component which may take the form of an arcuate strip.
  • the luminaire according to the invention may comprise a housing containing the light tube but in which at least the said upper region constitutes part of the housing, the lower region being provided on two strips arranged in the housing and extending substantially the length of the light tube, each strip being connected to the housing and spaced from the upper region by said intermediate region having intermediate luminance.
  • the upper region and intermediate region may be formed as an integral component and the lower region formed as a separate strip.
  • the lower region and intermediate region may be formed on a single strip as an integral component which is secured to the housing.
  • the upper region, intermediate region and lower region are formed as separate components, each connected to the housing.
  • the said upper and lower regions are interconnected by an intermediate region having a reflecting surface which extends outwardly from the first upper region at a shallower angle so that its effective luminance is between the luminance of the said upper and lower regions.
  • the upper region is desirably inclined at an angle of between 40° and 45° to the vertical
  • the lower region desirably extends at a narrower angle to the vertical than the upper region, preferably less than 20°
  • the intermediate region desirably extends at a wider angle to the vertical than the upper region, preferably about 65°.
  • the strips may be interconnected, at intervals, by crossblades, which are preferably wedge-shaped.
  • the upper region is white while the lower region is desirably made of aluminium or an aluminium alloy which is uncoloured.
  • the intermediate region may also be coloured white.
  • the intermediate region may be partially coloured white and the white colouring may take the form of spots or lines or a zig-zag formation. Where spots or lines are used, these preferably increase in size and/or number from the lower region towards the upper region.
  • the intermediate zone may be coloured grey, the grey colouring, which may be paint, preferably getting progressively darker from the upper region to the lower region.
  • the tube By using a white reflector behind and to the side of the light tube, the tube is not visible against a dark unflashed reflector but it blends into the background and is more comfortable to look at. However, if there were a simple direct transition between the highly reflective upper region and lower reflective lower region, the view of the reflector at long viewing angles would be glaring because the upper region would be seen adjacent to the much darker region with a luminance ration of over 25:1.
  • the intermediate region of intermediate luminance to give a so-called intermediate brightness zone, which can be achieved for example by changing the angle of the lower part of the upper region of the reflector to provide said intermediate region or by giving said region an intermediate colouring effect, the glaring contrast between the light and dark regions of the reflector is reduced and a casual view inside the reflector is now very comfortable.
  • the luminance of the crossblades and of the lower regions of the reflector strips is preferably of the order of 200 cd/m2 and the luminance of the intermediate region is desirably arranged to be midway between this luminance and the luminance of the upper region of the reflector. With this arrangement, the long angle view of the luminaire, all round, is low brightness and less than 200 cd/m2 luminance.
  • the luminaire comprises a body or housing 1 which is adapted to be fitted to a ceiling by suitable means (not shown).
  • the body 1 is of channel section and is provided with suitable mountings (not shown) for receiving and holding a fluorescent light tube 2.
  • the surface 3 of the body 1 is preferably painted white to serve as a reflective surface.
  • a respective reflector strip mounted on each side of the body 1, within the channel, is a respective reflector strip, each strip comprising an upper region 4, a lower region 6 and an intermediate region or zone 5.
  • each reflector strip is inclined to the vertical at an angle of about 40°
  • the lower region 6 is inclined to the vertical at a smaller angle of less than 20°
  • the intermediate zone 5 is inclined to the vertical at a wider angle of about 65°.
  • the two reflector strips are interconnected, at spaced intervals, by wedge-shaped crossblades 7 each of which is secured, at its ends, to the lower regions 6 of the respective reflector strips.
  • the reflector strips may be secured to the housing 1 by any suitable means known in the art.
  • the upper regions 4 and the intermediate zones 5 of the reflector strips are provided with a highly reflective white coating - preferably white gloss paint.
  • the lower regions 6 and the crossblades 7 are desirably made of aluminium or aluminium alloy which is unpainted.
  • Each reflector strip may therefore be made from a length of extruded aluminium or aluminium alloy which is painted white in the areas which will form the upper region and intermediate zone and then cut to the desired length for use with a light tube for which the reflector is intended.
  • Fig. 3 shows a modification in which the lower region 6a is made from a first strip of unpainted aluminium or aluminium alloy and the upper region 4a and intermediate region 5a are made from a second strip which is painted white and which is made of aluminium, aluminium alloy or other suitable metal.
  • This second strip has a further section 8 extending at substantially the same angle as the lower region 6a. The first strip can thus be secured by suitable means (not shown) to the section 8 of the second strip.
  • the lower region 6b is again made from a separate strip but in this case, instead of being secured to a strip carrying the intermediate and upper regions, the strip, which is provided with an L-sectioned flange 9, is simply secured by means of this flange to a side wall 10 of the housing 1.
  • the upper region 4b and intermediate region 5b are provided on a strip having a section 11 which is secured to the surface 3 of the housing 1 by suitable means (not shown). In this case, the section 11 will be painted white so as to form a substantially continuous reflective surface with the surface 3.
  • Fig. 5 shows a similar arrangement to that of Fig. 4 but in this case the upper region 4c and intermediate region 5c are provided on a strip having an L-shaped section 12 which is secured to a side wall 10 of the housing 1, the section 11 being omitted. With this arrangement, wiring 13 may be carried in the housing above the section 12.
  • Fig. 6 shows a further modified arrangement which is similar to the arrangements shown in Figs. 4 and 5 except that in this case the upper region 4d is provided on a separate strip having a section 11 which is secured to the surface 3 of the housing 1 and the intermediate region 5d is provided on a further separate strip having an L-shaped section 12 which is secured to the side wall 10 of the housing.
  • FIG. 7 A further modification is shown in Fig. 7 in which the intermediate region 5e is provided on a separate strip as in Fig. 6 but in this case the region 5e extends to the side wall 10 of the housing 1 and is secured to the said side wall by a section 14 of the strip which is inclined at an angle to the region 5e and extends substantially parallel to the side wall 10.
  • the luminaire shown in Fig. 8 differs from the previous examples in that, in this case, the housing 1 is provided with inclined walls 15, the inner surface of which constitutes the upper reflective region 4e.
  • the intermediate region 5f and the lower region 6c are provided on a single strip provided with an L-­sectioned flange 9 by means of which the strip is secured to the side wall 10 of the housing 1.
  • Fig. 9 shows a modification of the example shown in Fig. 8 in which the intermediate region 5g and the lower region 6b are provided on separate strips, the strip having the intermediate region 5g being provided with a section 16 by means of which the strip is secured to the strip having the lower region 6b.
  • FIG. 10 of the drawings A further embodiment of a luminaire is shown in Fig. 10 of the drawings in which, in addition to having inclined walls 15, the housing 1 is provided with further inclined walls 17.
  • the walls 17 extend at a shallower angle than the walls 15 and their inner surfaces constitute the intermediate region 5h while the inner surfaces of the walls 15 constitute the upper reflective region 4e.
  • the lower region 6b is provided on a separate strip which is secured to the side wall 10 of the housing 1 by the section 9 as before.
  • the luminaire shown in Fig. 11 is similar to that shown in Fig. 10, merely differing in the shape of the housing.
  • the luminaire shown in Figs. 12 to 18 of the drawings is similar to the previous embodiment in that it comprises a body 1 which is adapted to be fitted to a ceiling by suitable means (not shown), is of channel section and is provided with suitable mountings (not shown) for receiving and holding a fluorescent light tube 2.
  • the surface of the body 1 is preferably painted white to serve as a reflective surface.
  • a respective reflector strip 18 which comprises an upper region 4, a lower region 6 and an intermediate region or zone 5. In the case of Figs. 12 to 18 however, the reflector strips are arcuate.
  • the two reflector strips are interconnected, at spaced intervals, by wedge-shaped crossblades 7 each of which is secured, at its ends, to the lower regions 6 of the respective reflector strips.
  • the upper regions 4 and the intermediate zones 5 of the reflector strips are provided with a highly reflective white coating - preferably white gloss paint - which may be applied by a screen-printing process although any other suitable process may be employed if desired.
  • the lower regions 6 and the cross blades 7 are desirably made of aluminium or aluminium alloy which is unpainted. Each reflector strip may therefor be made from a length of extruded aluminium or aluminium alloy which is painted white in the areas which will form the upper region and intermediate zone and then cut to the desired length for use with a light tube for which the reflector is intended.
  • the reflector strips may be secured to the body 1 by any suitable means (not shown) known in the art.
  • each reflector strip may be created by the application of white paint in various forms.
  • a series of spots or dots are painted onto the reflector strip.
  • the spots or dots are arranged in rows and increase in size from the lower region 6 to the upper region 4 of the reflector strip whereas in Fig. 13 the spots or dots are all of the same size but are spaced relatively far apart in a row adjacent to the lower region 6 and are spaced progressively closer together in adjacent rows in a direction towards the upper region 4 of the reflector strip.
  • a series of substantially parallel lines are painted onto the reflector strip.
  • the width of the lines and the spacing between them is progressively reduced from the lower region 6 to the upper region 4 of the reflector strip whereas in Fig. 15 the width of all of the white lines is substantially the same but the spacing between them is progressively reduced from the lower region 6 to the upper region 4 of the reflector strip.
  • a series of wedges are painted onto the reflector strip at the intermediate zone 5 to form a zig-zag formation at said zone.
  • the intermediate zone 5 consists of a single band of lower luminance than the upper region 4 of such a colour or texture that it has a luminance which is between that of the higher luminance region 4 and the lower luminance region 6.
  • the reflector strips 18 may each consists of a single arcuate component as shown in Fig. 18 of the drawings. Modifications are, however, possible within the scope of the invention and the strip 18 need not be arcuate. One such modification is shown in Fig. 19 in which the reflector strip consists of a single planar strip 19.
  • Fig. 20 shows a further modification in which the reflector strip consists of a first strip 21 on which the upper region 4 and intermediate region 5 are provided and a second strip 22 on which the lower region 6 is provided.
  • the strip 21 is provided with a section 11 by means of which it can be secured to the surface 3 of the housing 1 and the strip 22 is provided with an L-sectioned flange 9 by means of which it is secured to a side wall 10 of the housing.
  • the section 11 will be painted white so as to form a substantially continuous reflective surface with the surface 3.
  • Fig. 21 shows a similar modification but in this case the upper strip 21 is provided with an L-shaped section 12 instead of the section 11 by means of which the strip 21 is secured to a side wall 10 of the housing 1. Wiring 13 can be carried in the housing above the section 12.
  • FIG. 22 A still further modification is shown in Fig. 22 in which the lower region 6, the intermediate region 5 and the upper region 4 are provided, respectively, on separate strips 22, 23 and 24.
  • the upper strip 24 has a section 11 for securing it to the surface 3 of the housing 1 and the intermediate strip 23 has an L-­shaped section 25 for securing it to the side wall 10 of the housing.
  • wiring 13 may be carried in the housing above the section 25.
  • Fig. 23 The modification shown in Fig. 23 is similar to that shown in Fig. 22 except that in this case, the upper strip 24 is provided with an L-shaped section 12 instead of the section 11 and further wiring 26 can be carried in the housing above this section.
  • the luminaires shown in Figs. 24 to 27 differ from the previous examples in that, in this case, the housing 1 is provided with inclined walls 27, the inner surface of which constitutes the upper reflective region 4.
  • the intermediate region 5 and lower region 6 are provided on a strip 28 which has an L-shaped section 9 by means of which it is secured to a side wall 10 of the housing.
  • the intermediate region 5 is provided on a separate strip 29 which is secured to the strip 28.
  • This embodiment is otherwise similar in every respect to the embodiment shown in Fig. 24.
  • the intermediate region 5 is also provided on the inner surface of the inclined walls 27 and a separate strip 22 on which the lower region 6 is provided is secured to a side wall 10 of the housing 1 as in the embodiments shown in Figs. 20 to 23.
  • the embodiment shown in Fig. 27 is similar to the embodiment shown in Fig. 26 except that in this case the intermediate region 5 is provided on a separate strip 30 which is secured to the lower portion of the inclined side wall 26.
  • a luminaire fitted with any one of the above-described reflectors according to the invention will provide soft lighting and even distribution without glare and will have a pleasing appearance when viewed from all distances and angles.
  • a reflector may be provided with a transverse cut-off of 45° to the light tube in order to satisfy the cut-off recommendations of the CIBSE memorandum TM6 which may be needed in large open plan spaces with a large number of VDU's.
  • the upper regions and intermediate zones of the reflector strips need not be painted but may be provided with any suitable coating provided that it is highly reflective.
  • a strip of plastics material may be applied to a substantially planar reflector strip to achieve the shallower-angled intermediate region.
  • the intermediate region of these embodiments may also be provided with a graduated colouring effect as in one or more of the embodiments shown in Figs. 12 to 17 of the drawings if desired.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Discharge Lamp (AREA)
EP86307440A 1985-10-08 1986-09-29 Leuchten Revoked EP0219255B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86307440T ATE85413T1 (de) 1985-10-08 1986-09-29 Leuchten.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB858524749A GB8524749D0 (en) 1985-10-08 1985-10-08 Light reflectors
GB8524749 1985-10-08
GB8524748 1985-10-08
GB858524748A GB8524748D0 (en) 1985-10-08 1985-10-08 Light reflectors

Publications (3)

Publication Number Publication Date
EP0219255A2 true EP0219255A2 (de) 1987-04-22
EP0219255A3 EP0219255A3 (en) 1989-03-22
EP0219255B1 EP0219255B1 (de) 1993-02-03

Family

ID=26289863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86307440A Revoked EP0219255B1 (de) 1985-10-08 1986-09-29 Leuchten

Country Status (3)

Country Link
EP (1) EP0219255B1 (de)
AT (1) ATE85413T1 (de)
DE (1) DE3687685T2 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298492A3 (en) * 1987-07-09 1990-05-16 Dai-Ichi Seiko Co. Ltd. An illumination device
EP0508163A3 (en) * 1991-04-08 1993-01-13 Hellux Leuchten Gmbh Lighting fixture with reflector
FR2726349A1 (fr) * 1994-10-26 1996-05-03 Thorn Europhane Sa Lanterne d'eclairage public a reflecteur ameliore, destinee notamment a l'eclairage d'une voie de circulation
EP0699863A3 (de) * 1994-08-12 1997-09-17 Matsushita Electric Industrial Co Ltd Leuchte für die Innenbeleuchtung
GB2360084A (en) * 2000-03-08 2001-09-12 Nordson Corp Shuttered ultra-violet/ infra-red lamp
CN102606914A (zh) * 2008-11-28 2012-07-25 富士迈半导体精密工业（上海）有限公司 室内灯具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010001363A1 (de) 2010-01-29 2011-08-04 Zumtobel Lighting Gmbh Reflektoranordnung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188657A (en) * 1973-07-13 1980-02-12 Whiteway Manufacturing Co., Inc. Reflector and method of producing different, distinctive and predictable light patterns therefrom
US4280170A (en) * 1979-09-26 1981-07-21 General Electric Company Luminaire
US4562517A (en) * 1983-02-28 1985-12-31 Maximum Technology Reflector systems for lighting fixtures and method of installation
US4494175A (en) * 1984-01-09 1985-01-15 Gte Products Corporation Recessed lighting fixture with improved louver mounting
US4536830A (en) * 1984-07-26 1985-08-20 Wisniewski Gregory G Reflector assembly for lamp fixtures

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298492A3 (en) * 1987-07-09 1990-05-16 Dai-Ichi Seiko Co. Ltd. An illumination device
EP0508163A3 (en) * 1991-04-08 1993-01-13 Hellux Leuchten Gmbh Lighting fixture with reflector
EP0699863A3 (de) * 1994-08-12 1997-09-17 Matsushita Electric Industrial Co Ltd Leuchte für die Innenbeleuchtung
FR2726349A1 (fr) * 1994-10-26 1996-05-03 Thorn Europhane Sa Lanterne d'eclairage public a reflecteur ameliore, destinee notamment a l'eclairage d'une voie de circulation
GB2360084A (en) * 2000-03-08 2001-09-12 Nordson Corp Shuttered ultra-violet/ infra-red lamp
US6457846B2 (en) 2000-03-08 2002-10-01 Nordson Corporation Lamp assembly
GB2360084B (en) * 2000-03-08 2004-04-21 Nordson Corp Lamp assembly
CN102606914A (zh) * 2008-11-28 2012-07-25 富士迈半导体精密工业（上海）有限公司 室内灯具

Also Published As

Publication number Publication date
DE3687685T2 (de) 1993-06-03
ATE85413T1 (de) 1993-02-15
EP0219255A3 (en) 1989-03-22
DE3687685D1 (de) 1993-03-18
EP0219255B1 (de) 1993-02-03

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