EP1890079B1 - Reflektor für Gasentladungslampen - Google Patents

Reflektor für Gasentladungslampen Download PDF

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Publication number
EP1890079B1
EP1890079B1 EP07015079A EP07015079A EP1890079B1 EP 1890079 B1 EP1890079 B1 EP 1890079B1 EP 07015079 A EP07015079 A EP 07015079A EP 07015079 A EP07015079 A EP 07015079A EP 1890079 B1 EP1890079 B1 EP 1890079B1
Authority
EP
European Patent Office
Prior art keywords
reflector
facets
lamp
light
radius
Prior art date
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Ceased
Application number
EP07015079A
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German (de)
English (en)
French (fr)
Other versions
EP1890079A1 (de
Inventor
Harry Wagener
Rüdiger Kittelmann
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.)
Auer Lighting GmbH
Original Assignee
Auer Lighting 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 Auer Lighting GmbH filed Critical Auer Lighting GmbH
Publication of EP1890079A1 publication Critical patent/EP1890079A1/de
Application granted granted Critical
Publication of EP1890079B1 publication Critical patent/EP1890079B1/de
Ceased 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Definitions

  • the invention relates to a reflector, in particular designed for use with gas discharge lamps.
  • Reflectors for receiving bulbs are known.
  • faceted reflectors are known in numerous embodiments.
  • German Patent DE 199 10 192 C2 (Inventor: Rüdiger Kittelmann, Harry Wagener) a faceted reflector with a rotationally symmetrical body, in which intensity inhomogeneities of the bulb, which lead to a twisted light field, can be corrected via the arrangement of the facets.
  • the disclosure of this patent is fully incorporated by reference.
  • the Laid-open publication DE 102 29 012 A1 describes that temperature-related irregularities of the light of a gas discharge lamp can be corrected by reflection elements.
  • the EP 0 985 870 discloses a lighting device with a gas discharge lamp as the light source, whose reflector has facets arranged in rows. The rows move radially toward the center of the reflector, describing the shape of a spiral.
  • metal halide lamps with ceramic burner of the supplier Osram which are sold under the product names POWERBALL HCI and POWERSTAR HCI. Such lamps are offered with a color temperature of 3000 and 4200 Kelvin.
  • metal and gas additives are used.
  • the invention is based on the object, the to reduce the disadvantages of the prior art described above.
  • the object of the invention to provide a reflector which generates a light field with a homogeneous light color in combination with a gas discharge lamp, in particular a metal halide lamp with ceramic burner.
  • Another object of the invention is to provide a reflector which has a high efficiency and in which the light intensity is distributed as homogeneously as possible.
  • Another object of the invention to achieve the most homogeneous possible light color alone through the reflector, which can be largely dispensed with lenses.
  • the object of the invention is already achieved by a reflector for receiving a lamp and by a lamp according to one of the independent claims.
  • a reflector which is designed to receive a light source.
  • the reflector for receiving a discharge lamp, such as a metal halide lamp is formed with a ceramic burner.
  • the reflector has facets. Facets are understood to mean individual, typically periodically arranged, reflective segments. It does not necessarily have to be sharply demarcated areas; rather, the facets can also merge into one another.
  • the facets can assume a wide variety of geometric shapes, particularly advantageous embodiments will be discussed below.
  • At least two facets of the reflector are designed such that they direct light from a lower region and an upper region of the emission region of the luminous means in substantially the same direction, such that the light is from the lower region and the upper region on the lighting field mixes. Light of the upper and lower areas are therefore superimposed on the illumination.
  • the emission region is understood to be the region from which the light of the luminous means is emitted.
  • the incandescent filament is understood as an emission region
  • the emission region is defined by the region which is arranged between the electrodes between which the gas discharge takes place. For example, in a metal halide lamp with a ceramic burner, this is the area within the ceramic burner.
  • the upper and lower regions of the emission region are defined as subregions of the volume in which the light generation takes place, these being spaced apart within the entire emission region.
  • a luminaire can be provided in which a light field is also generated in light sources with inhomogeneous color temperature, in which inhomogeneities of the color are largely compensated.
  • the upper and lower emission regions are at least 0.2, preferably 0.5 and more preferably at least 1 mm apart.
  • An area in this context is understood to be a defined volume of the entire emission area. In principle, mathematically speaking, the upper and lower emission ranges can each be reduced to one point.
  • Upper and lower emission range can also be distinguished by emitting light of a different color. For example, one area may emit light with a slight green color and another area emit light with a slight red color. This emission of different colors is based in particular on a stratification of the gas mixture of a gas discharge lamp.
  • the reflector has at least two types of differently shaped facets, which are arranged substantially in radially outgoing from the center of the reflector columns.
  • the facets are essentially circular or elliptical about a center of gravity Reflectors, forming lines with the intersections of the rows and columns defining fields.
  • the facets need not be sharply demarcated in this context, in particular, the facets can be arranged offset to each other.
  • the reflector is configured in such a way that, viewed from any reference facet, a substantially identically designed facet is arranged offset by at least one field on the adjacent row and / or column.
  • An identically designed facet is understood to mean, for example and in particular, a facet having the same radius of curvature.
  • facets statistically random and / or to arrange.
  • facets which, for example, have a randomly distributed radius of curvature, inhomogeneities of the light colors of the imaged light field can likewise be reduced.
  • identically designed facets are arranged offset in the manner of a peg jump two fields.
  • identically designed facets are arranged offset in the manner of a peg jump two fields.
  • facets are preferably offset in the adjacent line.
  • identically designed, offset facets run from a first line near the center to a second, essentially edge-side line.
  • the same facets run essentially helically from inside to outside.
  • cylindrical and / or spherical facets are used as facets.
  • Cylindrical facets are understood to be facets which essentially have the geometry of a circular cylindrical section, while spherical facets are essentially spherical.
  • the cylindrical facets are preferably formed with their axis of rotation in the direction of the reflector center and / or with its axis of rotation perpendicular to the center of the reflector.
  • the reflector is preferably formed substantially rotationally symmetrical.
  • spherical, parabolic or ellipsoidal reflectors are provided.
  • the radius of the basic body of the facets is preferably between 5 mm and 200 mm. It is envisaged to use facets with different radii, wherein the radius of the largest facet at least three times, preferably five- and more preferably ten times as large as the radius of the smallest facet.
  • Facets of these different radii are preferably distributed in a row or column.
  • the number of facets from line to line preferably remains constant.
  • the facets thus become narrower towards the center, whereby this reduction in the width of the facet does not mean a different design of the facet in the sense of the application.
  • the reflector preferably has between 5 and 30 and more preferably between 10 and 20 lines.
  • the reflector preferably has between 20 and 150, more preferably between 40 and 100 columns.
  • a spiral arrangement of identically designed facets is provided in a particular embodiment of the invention over at least 5, preferably at least 10 and more preferably at least 15 consecutive rows or columns.
  • the spiral-shaped configuration extends substantially from the center to the edge of the reflector.
  • the reflector is subdivided into angular ranges in which the radius of curvature of the facets increases and decreases periodically.
  • it is provided to reduce the radius of curvature from a maximum via a sine function to a minimum and then to increase it again to a maximum.
  • the distance from one maximum to the following minimum is preferably 45 ° or 90 °.
  • the invention relates to a luminaire which is provided with a reflector according to the invention and has a lighting means.
  • the light-emitting means is preferably installed in a receptacle of the reflector.
  • the light source used is preferably a gas discharge lamp, in particular a metal halide lamp with a ceramic burner.
  • Suitable ceramic-based discharge lamps are, in particular, light sources from OSRAM, which are marketed under the names OSRAM POWERBALL HCI.
  • bulbs with the product designation HCI-T35 / 942 NDL or HCI-T35 / 830 WL can be used.
  • the color temperature of the illuminant is preferably between 2800 and 4500 Kelvin, more preferably between 2900 and 3200 Kelvin. It is also provided in the context of the invention, however, to provide lamps with a higher color temperature, about 4500 to 7000 Kelvin, for example as a daylight lamp.
  • the lamp may have an additional lens or be provided with a disc as splinter protection.
  • the light source is over 2 cm, preferably over 3 cm and more preferably over 5 cm long.
  • the length of the light source does not mean the length of the previously defined emission range, but the Length of the glass bulb, in which the burner or the filament is arranged.
  • Fig. 1 should the essential features of a reflector 1 are explained in more detail.
  • the reflector 1 is shown in plan view. It is a faceted reflector, which has a plurality of facets 2.
  • the reflector thus has about 15 lines, each having about 30 facets.
  • the facets 2 are designed as cylindrical facets such that the shape of the respective facet 2 is defined by a circular cylinder whose axis of rotation in the Substantially runs along the inner surface of the reflector.
  • the cut surfaces of these individual cylinder cutouts form the respective facets.
  • the radius of these cylindrical facets and thus the radius of curvature of the facets 2 assumes values between 9.1 and 150 mm.
  • the uppermost facet line begins with a radius of curvature of 150 mm of the 0 ° position.
  • the radius of curvature decreases to 9.1 mm and then increases again to 150 mm, whereby at 90 °, the second maximum of the radius of curvature is reached.
  • the radii of curvature essentially follow a sinusoidal course.
  • the maximum radii of curvature of the outer facet line are 0 °, 90 °, 180 ° and 270 °
  • the minimum radii of curvature of the facets are 45 °, 135 °, 225 ° and 315 °.
  • the facet of the following column is shifted by one clockwise field.
  • the facets 2, each with the same radius of curvature are thus arranged spirally, as indicated by the dashed line 4.
  • the black dots along the dashed line 6 are intended to describe another embodiment of a reflector 2.
  • the facet with the same radius of curvature in the subsequent line is shifted by two fields in the manner of a peg jump.
  • the spiral-shaped configuration according to the dashed line 6 thus has a lower slope than that according to the dashed line 4th
  • the reflector 1 is formed of glass and provided with a reflective coating. In particular, it is intended to apply a cold-light mirror coating.
  • the light source is designed as a high-pressure discharge lamp, preferably as a metal halide lamp with ceramic burner.
  • a light field can be achieved, which is characterized both by a high color homogeneity and by a high homogeneity of the illuminance.
  • Fig. 2 shows the emission spectrum of a gas discharge lamp in an upper area.
  • the emission of the gas discharge lamp was measured substantially from above. The measurement therefore primarily reflects the emission components of the upper range.
  • top and bottom is arbitrary, in particular can be reversed above and below.
  • the x-axis shows the wavelength in nm and the y-axis shows the relative spectral intensity.
  • the measurement gives a color temperature of about 2830 K.
  • Fig. 3 shows the emission spectrum of a gas discharge lamp in a lower region.
  • the emission of the gas discharge lamp was measured substantially at an angle of 45 ° from below. The measurement therefore primarily reflects the emission shares of the lower range.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
EP07015079A 2006-08-15 2007-08-01 Reflektor für Gasentladungslampen Ceased EP1890079B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006038382A DE102006038382A1 (de) 2006-08-15 2006-08-15 Reflektor für Gasentladungslampen

Publications (2)

Publication Number Publication Date
EP1890079A1 EP1890079A1 (de) 2008-02-20
EP1890079B1 true EP1890079B1 (de) 2010-05-12

Family

ID=38561743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07015079A Ceased EP1890079B1 (de) 2006-08-15 2007-08-01 Reflektor für Gasentladungslampen

Country Status (5)

Country Link
US (1) US7832905B2 (enrdf_load_stackoverflow)
EP (1) EP1890079B1 (enrdf_load_stackoverflow)
JP (1) JP5355871B2 (enrdf_load_stackoverflow)
CN (1) CN101126493B (enrdf_load_stackoverflow)
DE (2) DE102006038382A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4576490B2 (ja) * 2008-12-09 2010-11-10 フェニックス電機株式会社 発光装置用のリフレクタおよびそれを用いた発光装置
DE102009053207A1 (de) * 2009-11-06 2011-05-12 Auer Lighting Gmbh Reflektorleuchte
EP2428727B1 (de) 2010-08-25 2013-11-13 Jordan Reflektoren GmbH & Co.KG Leuchten-Reflektor sowie Vorrichtung zu dessen Herstellung
EP2535639A1 (de) 2011-06-17 2012-12-19 Jordan Reflektoren GmbH & Co.KG Leuchten-Reflektor sowie Vorrichtung zu dessen Herstellung
CN102508355B (zh) * 2011-11-23 2015-02-18 上海晶电新能源有限公司 离散化的二次反射系统
DE102012009539B4 (de) * 2012-03-29 2020-12-24 Auer Lighting Gmbh Leuchte
EP3289281A1 (en) 2015-04-30 2018-03-07 Cree, Inc. Solid state lighting components

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1516379A (en) * 1923-06-19 1924-11-18 Dufek Louis Headlight reflector
GB8614988D0 (en) * 1986-06-19 1986-07-23 Emi Plc Thorn Reflector
US5272408A (en) * 1991-05-09 1993-12-21 Gte Products Corporation Lamp and reflector assembly
JPH0521043A (ja) * 1991-07-11 1993-01-29 Toshiba Lighting & Technol Corp 照明装置
DE29721547U1 (de) * 1997-12-08 1998-08-13 Reichard, Ulrich, Dornbirn Arbeitsleuchte mit einer Gasentladungslampe und einem Diffusor
US6053623A (en) * 1998-03-03 2000-04-25 New Option Lighting, Llc Waterproof light with multi-faceted reflector in a flexible enclosure
US6086227A (en) * 1998-09-11 2000-07-11 Osram Sylvania Inc. Lamp with faceted reflector and spiral lens
DE19905115B4 (de) * 1999-02-09 2012-02-16 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge
DE19910192C2 (de) 1999-03-09 2002-04-04 Schott Auer Gmbh Reflektor mit einem konkaven rotationssymmetrischen Grundkörper und einer Facetten aufweisenden Reflexionsfläche
JP4452386B2 (ja) * 2000-08-31 2010-04-21 スタンレー電気株式会社 灯具
KR20030020846A (ko) * 2001-09-04 2003-03-10 마쯔시다덴기산교 가부시키가이샤 고압방전램프 및 그 제조방법
DE10229012A1 (de) * 2002-06-28 2004-01-29 Siemens Ag Scheinwerfer für Veranstaltungstechnik mit Strahlungsverlaufskonvertierung
JP4062509B2 (ja) * 2002-11-12 2008-03-19 本田技研工業株式会社 車両用前照灯装置
JP4488856B2 (ja) * 2004-09-27 2010-06-23 スタンレー電気株式会社 水銀フリーメタルハライドランプ

Also Published As

Publication number Publication date
CN101126493A (zh) 2008-02-20
EP1890079A1 (de) 2008-02-20
JP5355871B2 (ja) 2013-11-27
DE102006038382A1 (de) 2008-02-28
JP2008047530A (ja) 2008-02-28
US7832905B2 (en) 2010-11-16
US20080055912A1 (en) 2008-03-06
DE502007003703D1 (de) 2010-06-24
CN101126493B (zh) 2013-05-29

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