EP1651906B2 - Leuchte mit mindestens zwei lichtquellen - Google Patents

Leuchte mit mindestens zwei lichtquellen Download PDF

Info

Publication number: EP1651906B2
Authority: EP; European Patent Office
Prior art keywords: light source; light; lamp; sources; supplementary
Prior art date: 2003-08-05
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

EP04737405A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP1651906B1 (de

EP1651906A1 (de

Inventor

Christian Bartenbach

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.)

Individual

Original Assignee

Individual

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.)

2003-08-05

Filing date

2004-08-03

Publication date

2009-11-18

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2004-08-03 Application filed by Individual filed Critical Individual

2004-08-03 Priority to PL04737405T priority Critical patent/PL1651906T5/pl

2006-05-03 Publication of EP1651906A1 publication Critical patent/EP1651906A1/de

2007-01-31 Application granted granted Critical

2007-01-31 Publication of EP1651906B1 publication Critical patent/EP1651906B1/de

2009-11-18 Publication of EP1651906B2 publication Critical patent/EP1651906B2/de

2024-08-03 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Classifications

- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
- H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]

Definitions

the present invention relates to a luminaire, in particular for lighting in closed rooms and / or for illuminating objects, having at least two light sources, wherein the light which can be emitted by the light sources has different wavelength ranges.
the most similar color temperature of an electromagnetic spectrum is given in Kelvin and is a quantity that denotes a particular light color.
the most similar color temperature of a spectrum e.g., a light source
the mathematical determination of the most similar color temperature of a light source with known spectral distribution is carried out according to DIN 5033 "Color measurement” with DIN 5031-5 "Radiation physics in the optical domain and lighting technology temperature terms”.
the most similar color temperature describes whether more long-wave or more short-wave light components are present in the spectrum of a light source.
the color rendering index of a light source with known spectral distribution is determined purely mathematically according to DIN 6169 "Color Rendering". These numerical values provide information on the reproduction of the colors of objects which are illuminated with the type of light to be evaluated. Thus, for example, specify whether a surface that appears red in daylight under artificial light irradiation causes the same or a different color impression in the viewer.
the theoretical maximum value for the color rendering index is 100. The lower the color rendering index for a particular color, the poorer the color rendering property of the light source for that color.
the DE 296 20 583 discloses an interior light according to the preamble of claim 1.
Object of the present invention is therefore to improve a generic lamp in such a way that both the "most similar color temperature” and the “color rendering index” for the respective lighting task of the lamp can be improved in the simplest and most energy efficient manner.
the invention it is thus provided to specifically correct specific deficits in the light spectrum emitted by a main light source by adding color components to the emitted light by means of one or more supplementary light sources in specific light wave ranges. It has surprisingly been found here that it is sufficient if the supplementary light source (s) has a significantly lower luminous flux than the main light source. In this case, both the color rendering index and the most similar color temperature (ie the light environment) can be influenced in a targeted manner.
the term luminous flux is used in accordance with DIN5031 "Radiation physics in the optical domain and lighting technology". It describes the electromagnetic radiation power evaluated with the spectral brightness sensitivity of the eye.
Some types of light sources especially those with high light output, such as low pressure or high pressure gas discharge lamps, have more or less unfavorable color rendering qualities for colored surfaces.
a correction of the mixed spectrum can be achieved in such a way that a spectrum as level as possible for optimal neutral color reproduction of all possible surface colors is achieved.
a "tilting" of the light spectrum in the direction of warmer light with larger red components (corresponding to a lower most similar color temperature) or towards colder light with larger blue components (corresponding to a higher most similar color temperature) can be achieved.
the main light source and / or the supplementary light source (s), preferably individually, is dimmable, as this makes it easy to adapt the spectral composition of the light emitted by the light to the respective lighting task possible on site.
the luminous flux which can be emitted by the main light source is at least 10 times, preferably at least 20 times, as large as the total luminous flux which can be emitted by the or all supplementary light source (s).
an extremely small proportion of light of the complementary light sources is sufficient to clearly supplement the light emitted overall by the light. Since many main light sources have deficits, especially at the edges of the visible wavelength spectrum of the light, it is often favorable for the supplementary light source to emit light in a wavelength range which lies at the edge of the wavelength range which can be emitted by the main light source.
the light which can be emitted by the supplementary light source has a wavelength range between 550 and 780 nm, preferably between 600 and 700 nm. If the most similar color temperature and thus the light spectrum is to be "tilted" into the blue area or if deficits in the main light source are to be improved in this area, then it is favorable if the light which can be emitted by the supplementary light source (s) has a wavelength range between 420 and 520 nm, preferably between 420 and 480 nm. However, not only at the edge of the spectrum of the main light source can be improved by the measures described, but generally in all areas in which the main light source radiates with a reduced intensity.
the spectral power density P is plotted against the wavelength of the emitted light ⁇ .
the wavelength is given here in nanometers [nm], while for P a purely qualitative, not necessarily true to scale representation is selected.
the arrow on the P axis points in the direction of increase of P.
Fig. 1 is a high maxima as well as very small minima exhibiting spectrum 8 a main light source shown schematically.
This has a poor color rendering index, since in some light wavelength ranges 9 light components are only to a very limited extent or almost nonexistent. If, for example, a red object is illuminated with such a main light source 1, then the color rendering is very poor, since these long-wave light components are present only very weakly.
the illuminated object appears under illumination of such a light source in a different color than in daylight.
a spectrum with very good color rendering properties for all colors is shown schematically by the curve 13.
Fig. 2 shows three different curves of light spectra with a different "most similar color temperature".
the spectrum 10 corresponds to a similar color temperature of 3000 Kelvin, the spectrum 11 of 5500 Kelvin and the spectrum 12 of 10,000 Kelvin.
This schematic representation shows that the slope of the curves is a qualitative criterion for the most similar color temperature present in the spectrum.
the spectrum 12 has a higher shortwave and thus blue component, while the spectrum 10 has a greater longwave or red component. In spectrum 11, all wavelength ranges are approximately equally represented.
Fig. 3a to 3c show the spectrum 8 of a high pressure mercury metal halide lamp in phantom. This has a significant deficit in the long-wave red area.
the light of the supplementary light source 2 has a light wavelength range between 580 and 700 nm. In sum, this results in the total spectrum of 15.
a supplementary light source 2 in the example shown in FIG Fig. 3a a red LED with a share of 5-10 percent of the total luminous flux of the luminaire used.
Fig. 3b Dashed line shows the spectrum 8 of a low-pressure mercury metal halide lamp (eg a fluorescent tube).
This spectrum 8 points in the short-wave Range below 540 nm and in the long-wave range above 620 nm significant deficits.
two complementary light sources 2 are provided, which together provide the supplementary light components 14, so that an overall spectrum 15 results with clearly improved color rendering properties both in the blue and in the red region.
complementary light sources 2 at least one cyan light emitting diode and a red light emitting diode. The cyan as well as the red LEDs each account for 5-10 percent of the total luminous flux of the luminaire.
Fig. 3c shows how the light of a so-called RGB (red-green-blue) light source can be improved in its color rendering properties.
RGB red-green-blue
the spectral view shows that the spectrum of the RGB light source 8 has clear "holes" in the range between 450 and 520 nm and between 550 and 600 nm.
to improve this spectrum 8 is provided to provide additional light sources 2 in the form of cyan and amber (orange) light-emitting diodes with luminous flux shares of 10 to 20 percent.
the overall spectrum 15 produced in this way again has significantly improved color rendering properties and an average similar color temperature.
Fig. 4a to 5b show schematically some selected variants.
the main light source is assigned a separate reflector body 4.
the supplementary light sources 2 are arranged around this reflector body 4 around.
Fig. 4b are the complementary light sources 2 arranged slightly withdrawn.
light guides 5 are provided for transmitting light into the region of the light exit opening 6 or 6 '.
the light guides 5 may be made of acrylic, for example. They make it possible to arrange the complementary light sources 2 at almost any location, which on the one hand creates constructive freedom and on the other hand can be used to keep outgoing from the main light source thermal load of the complementary light sources 2 as low as possible.
Fig. 4c shows a variant in which the supplementary light source 2 are arranged in recesses of the reflector body 4.
Fig. 4d shows an embodiment in which the main light source 1 and the complementary light sources 2 are located in a common reflector body 4. This is conveniently equipped with highly reflective surfaces, as is known in the art, to improve the light mixture. As indicated only schematically here, a desired blanking can be ensured by means of apertures 7.
the supplementary light sources 2 are semiconductor light sources, preferably light-emitting diodes.
the main light sources 1 include, inter alia, both high-pressure discharge lamps and low-pressure discharge lamps.
the main light source is a mercury metal halide lamp or a sodium metal halide lamp or a halogen lamp or other RGB lamp. Both the main light source 1 and preferably all complementary light sources 2 are conveniently arranged in a common lamp body.
Fig. 4e shows a variant in which the main light source 1 is formed by a plurality of white light emitting diodes (LED's). For color enhancement, cyan and red LEDs are embedded as complementary light sources 2 in this array. Overall, this results in turn the ratio of the radiated luminous flux according to the invention.
LED's white light emitting diodes
the Fig. 5a and 5b show a further embodiment in which analogous to Fig. 4a the supplementary light sources 2 are arranged at the edge of the main light source 1.
the main light source 1 a high-pressure metal halide lamp with high power is used, the light of which is spectrally enhanced with the red and cyan LEDs 2 used as complementary light sources 2.
the supplemental light sources 2 are thermally insulated from it.
the thermal insulation 3 is constructed in the embodiment shown in the form of a multilayer winding of at least two different, alternately arranged materials or films. One of the materials used for this winding is conveniently a polytetrafluoroethylene film.
the thermal insulation 3 extends substantially as shown in section in FIG Fig. 5b can be seen over the entire area where the main light source develops high temperatures. Through the in Fig. 5a shown slight tilting of the cyan LEDs, the spatial light mixture is improved.
the diameter 16 of the light exit openings 6 of the embodiment shown is 25 cm, the overall diameter 17 about 37 cm. Both the main light source 1 and the supplementary light sources 2 are preferably individually dimmable, so that the spectral composition of the total emitted light can be easily adapted to the respective lighting task.

Landscapes

Non-Portable Lighting Devices Or Systems Thereof (AREA)
Eye Examination Apparatus (AREA)
Optical Radar Systems And Details Thereof (AREA)

EP04737405A 2003-08-05 2004-08-03 Leuchte mit mindestens zwei lichtquellen Expired - Lifetime EP1651906B2 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PL04737405T PL1651906T5 (pl)	2003-08-05	2004-08-03	Oprawa oświetleniowa z co najmniej dwoma źródłami światła

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT12392003		2003-08-05
PCT/AT2004/000275 WO2005012785A1 (de)	2003-08-05	2004-08-03	Leuchte mit mindestens zwei lichtquellen

Publications (3)

Publication Number	Publication Date
EP1651906A1 EP1651906A1 (de)	2006-05-03
EP1651906B1 EP1651906B1 (de)	2007-01-31
EP1651906B2 true EP1651906B2 (de)	2009-11-18

Family

ID=34109408

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP04737405A Expired - Lifetime EP1651906B2 (de)	2003-08-05	2004-08-03	Leuchte mit mindestens zwei lichtquellen

Country Status (6)

Country	Link
EP (1)	EP1651906B2 (pl)
AT (1)	ATE353128T1 (pl)
DE (1)	DE502004002835D1 (pl)
ES (1)	ES2281806T5 (pl)
PL (1)	PL1651906T5 (pl)
WO (1)	WO2005012785A1 (pl)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2006137015A1 (en) *	2005-06-23	2006-12-28	Koninklijke Philips Electronics N.V.	Illumination system and display device
DE102005036275A1 (de) *	2005-08-02	2007-02-08	Berchtold Holding Gmbh	Operationsleuchte
DE102007022566A1 (de)	2007-05-14	2008-11-20	Merck Patent Gmbh	Beleuchtungseinheit bestehend aus Entladungslampe, LEDs und Konversionsleuchten
KR100776916B1 (ko)	2007-05-18	2007-11-15	유항재	시력 보호용 조명기구
KR100858641B1 (ko)	2008-01-08	2008-09-16	유항재	시력 보호 기능을 가진 컴팩트 형광램프용 아답터
DE102008013049A1 (de) *	2008-03-06	2009-09-24	Mbb International Group Ag	Leuchte, insbesondere zur Erzielung eines tageslichtähnlichen Lichtspektrums
WO2011039690A1 (en) *	2009-09-29	2011-04-07	Koninklijke Philips Electronics N.V.	Modular luminaire and lighting system
WO2013064969A1 (en)	2011-10-31	2013-05-10	Koninklijke Philips Electronics N.V.	A compact light output device with wavelength conversion
US11703197B2 (en)	2020-01-31	2023-07-18	American Sterilizer Company	Lighting assembly and light head including same

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* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5060118A (en) *	1989-04-06	1991-10-22	Frank A. Arone	Apparatus for daylight color duplication
DE29620583U1 (de) *	1996-11-27	1997-02-13	Kundisch Microtech GmbH & Co. KG, 78056 Villingen-Schwenningen	Beleuchtungskörper mit stufenlos einstellbarer Farbänderung des Lichtes und des Lichtkegels
WO1999053236A1 (en) *	1998-04-14	1999-10-21	Moriyama Sangyo Kabushiki Kaisha	Color illuminator, color illuminating unit, and color illuminant module
DE29923835U1 (de) *	1999-04-07	2001-04-05	Zumtobel Staff Gmbh	Beleuchtungsanordnung zur Anbringung an der Decke oder einer Wand eines Raumes
DE20007134U1 (de) *	2000-04-18	2000-08-17	OSRAM Opto Semiconductors GmbH & Co. oHG, 93049 Regensburg	Leuchte mit einstellbarem Farbort
CN1706023A (zh) *	2002-10-14	2005-12-07	皇家飞利浦电子股份有限公司	生成白光的发光体

2004
- 2004-08-03 ES ES04737405T patent/ES2281806T5/es not_active Expired - Lifetime
- 2004-08-03 WO PCT/AT2004/000275 patent/WO2005012785A1/de not_active Ceased
- 2004-08-03 EP EP04737405A patent/EP1651906B2/de not_active Expired - Lifetime
- 2004-08-03 PL PL04737405T patent/PL1651906T5/pl unknown
- 2004-08-03 AT AT04737405T patent/ATE353128T1/de active
- 2004-08-03 DE DE502004002835T patent/DE502004002835D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Handbuch für Beleuchtung, mit 19. Ergänzungslieferung, März 2003, ecomed sicherheit, Hrsg.:Hort Lange, begründet von Schweizer Licht Gesellschaft (SLG),Unter mitw. der Fachges. Deutsche Lichttechnische Gesellschaft e.V. (Auszüge)" †

Also Published As

Publication number	Publication date
ES2281806T3 (es)	2007-10-01
ES2281806T5 (es)	2010-04-12
ATE353128T1 (de)	2007-02-15
PL1651906T5 (pl)	2010-04-30
DE502004002835D1 (de)	2007-03-22
EP1651906B1 (de)	2007-01-31
PL1651906T3 (pl)	2007-06-29
EP1651906A1 (de)	2006-05-03
WO2005012785A1 (de)	2005-02-10

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