EP2469983B1 - Spektrum für Kurzsichtigkeit - Google Patents
Spektrum für Kurzsichtigkeit Download PDFInfo
- Publication number
- EP2469983B1 EP2469983B1 EP11193962.5A EP11193962A EP2469983B1 EP 2469983 B1 EP2469983 B1 EP 2469983B1 EP 11193962 A EP11193962 A EP 11193962A EP 2469983 B1 EP2469983 B1 EP 2469983B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- lighting arrangement
- wavelength
- arrangement according
- spectrum
- 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.)
- Active
Links
- 238000001228 spectrum Methods 0.000 title claims description 30
- 230000004438 eyesight Effects 0.000 title claims description 18
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 27
- 230000003595 spectral effect Effects 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 7
- 150000004767 nitrides Chemical class 0.000 claims description 5
- 238000009877 rendering Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052688 Gadolinium Inorganic materials 0.000 claims 1
- 229910052765 Lutetium Inorganic materials 0.000 claims 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 claims 1
- 229910052727 yttrium Inorganic materials 0.000 claims 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims 1
- 238000005286 illumination Methods 0.000 description 14
- 239000002245 particle Substances 0.000 description 13
- 239000008393 encapsulating agent Substances 0.000 description 10
- 210000001747 pupil Anatomy 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 4
- 229920002050 silicone resin Polymers 0.000 description 4
- 102100025912 Melanopsin Human genes 0.000 description 2
- -1 SiONs Chemical compound 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 210000003986 cell retinal photoreceptor Anatomy 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 108010005417 melanopsin Proteins 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000001525 retina Anatomy 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000004456 color vision Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004446 light reflex Effects 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 229910052605 nesosilicate Inorganic materials 0.000 description 1
- 150000004762 orthosilicates Chemical class 0.000 description 1
- 230000004310 photopic vision Effects 0.000 description 1
- 230000001179 pupillary effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000004296 scotopic vision Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000004382 visual function Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Images
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
Definitions
- Light provided by a lighting device having a predefined spectral distribution hits photoreceptors in the retina of the human eye, namely the "rods” and the “cones".
- the rods are used for vision at reduced light levels, i.e. at so-called scotopic levels.
- the rods are extremely sensitive to light, but provide achromatic vision.
- the other type of photoreceptors of the human eye, the cones provide colour vision at photopic levels of illumination, but are less sensitive.
- the light level during daytime corresponds to photopic levels such that the cones suppress the rods. Howevoer, in case of reduced levels of illumination and thus, at mesopic levels, the rods become more dominant.
- the rods are most sensitive for light having a relative short wavelength, i.e. about 505nm, whereas the cones are most sensitive for light having a wavelength of about 555nm.
- the lighting unit 1 comprises a number of 5 blue LEDs 3a and at least one red LED 3b.
- the respective LEDs are conventional LEDs that emit substantially monochromatic light in a first and second wavelength region, respectively.
- another blue LED 3a is provided, said particular LED being covered by an encapsulant 4 comprising phosphor particles which at least partially convert the emitted light of the blue LED to red light.
- the amount of colour conversion particles 5a within the provided silicone resin 4 and the amount of the provided LEDs 3a, 3b is preferably selected such that a predefined spectrum of the emitted light is obtained, said spectrum being designed to support the human eye to achieve an improved to visualization ability under mesopic conditions.
- the spectral distribution of the emitted light will be discussed in greater details with reference to figures 2a and 4 .
- the intensity of the emitted light shows a maximum 14 as an intermediate peak at about 530nm.
- the exact number of LED light sources provided at the supporting element of the lighting arrangement may vary in order to obtain a predefined spectral power distribution of the emitted light according to figure 4 .
Landscapes
- Led Device Packages (AREA)
Claims (15)
- Beleuchtungsanordnung, umfassend ein Trägerelement (2) mit mindestens einer blauen LED-Lichtquelle (3a), die mindestens teilweise mit einer Farbumwandlungsschicht (5a) bedeckt und entworfen ist, um ein Licht von mindestens einem ersten Wellenlängenbereich zu emittieren, und mindestens eine rote LED-basierte Lichtquelle (3b), die entworfen ist, um Licht von mindestens einem zweiten Wellenlängenbereich zu emittieren,
wobei das Spektrum des von der Beleuchtungsanordnung emittierten Lichts an ein vordefiniertes Spektrum zum Dämmerungssehen angepasst ist, wobei das Spektrum eine erste Intensitätsspitze (11) bei einer Wellenlänge von 440 bis 480 nm und eine zweite Intensitätsspitze (12) bei einer Wellenlänge von 600 bis 650 nm aufweist. - Beleuchtungsanordnung (1) nach Anspruch 1, wobei das angepasste Spektrum zum Dämmerungssehen ein Minimum bei einer Wellenlänge zwischen 470 bis 490 nm umfasst, das ungefähr 1,5 bis 6 Mal kleiner als die Intensität der Spitze im Wellenlängenbereich von 440 bis 480 nm ist.
- Beleuchtungsanordnung nach Anspruch 1 oder 2, wobei das Spektrum eine Intensitätsspitze des emittierten Lichts im Wellenlängenbereich von 530 bis 600 nm umfasst, d.h. ungefähr 40 bis 95 % der Lichtintensität der Intensitätsspitze im Bereich von 440 nm bis 480 nm.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei das Verhältnis der Lichtausgabe des blauen und roten LED-Lichtquelle zwischen 3,5 zu 1 und 5 zu 1 liegt.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei die blauen LED-Lichtquellen (3a) blaue LED-Chips sind, die mindestens teilweise durch einen grünen Licht emittierenden Leuchtstoff bedeckt sind, ausgewählt aus der Gruppe aus Yttrium, Lutetium, Gadolinium-Granaten oder ihren Mischungen.
- Beleuchtungsanordnung nach einem der Ansprüche 1 bis 5, wobei die blauen LED-Lichtquellen mindestens teilweise durch einen YAG- oder einen BOSE-Leuchtstoff bedeckt sind.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei die rote LED-basierte Lichtquelle aus einem roten LED-Chip (3b) besteht.
- Beleuchtungsanordnung nach einem der Ansprüche 1 bis 7, wobei die rote LED-basierte Lichtquelle aus einem blauen LED-Chip (3a) besteht, der durch ein Farbumwandlungselement (5a) bedeckt ist, vorzugsweise einen Nitrid-enthaltenden Leuchtstoff.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei die Farbtemperatur der Beleuchtungsanordnung zwischen 4300 Kelvin und 4700 Kelvin liegt.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei die Beleuchtungsanordnung einen Farbwiedergabeindex RA aufweist, der größer als 70 ist.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei das emittierte Licht mit Farbart-x-Koordinaten zwischen 0,3600 und 0,3850 und mit Farbart-y-Koordinaten zwischen 0,3760 und 0,4000 ist.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei die Beleuchtungsanordnung eine minimale Ausgabe (Lichtfluss) von 1884 Lumen, vorzugsweise von 1890 Lumen aufweist.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei die spektrale Leistungsverteilung des emittierten Lichts eine Intensitätsspitze im Wellenlängenbereich von 440 bis 460 nm umfasst.
- Beleuchtungsanordnung nach einem der vorhergehenden Ansprüche, wobei die spektrale Leistungsverteilung des emittierten Lichts eine Intensitätsspitze im Wellenlängenbereich von 600 bis 630 nm umfasst.
- Verfahren zum Anpassen eines vordefinierten Spektrums zum Dämmerungssehen mit Hilfe einer Beleuchtungsanordnung, umfassend mindestens eine blaue LED-Lichtquelle (3a) und eine rote LED-basierte Lichtquelle (3b), wobei das Verfahren die folgenden Schritte umfasst:- Emittieren von Licht eines zweiten Wellenlängenbereichs,- Umwandeln des Lichts mindestens teilweise von dem ersten Wellenlängenbereich in Licht mit einer höheren Wellenlänge.- Emittieren von Licht eines zweiten Wellenlängenbereichs, wobei die sich ergebende spektrale Verteilung eine erste Intensitätsspitze (11) bei einer Wellenlänge von 440 bis 480 nm und eine zweite Intensitätsspitze (12) bei einer Wellenlänge von 600 bis 650 nm aufweist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010063830 | 2010-12-22 | ||
| DE102011005689A DE102011005689A1 (de) | 2010-12-22 | 2011-03-17 | Spektrum für mesopisches bzw. Dämmerungssehen |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP2469983A2 EP2469983A2 (de) | 2012-06-27 |
| EP2469983A3 EP2469983A3 (de) | 2015-01-21 |
| EP2469983B1 true EP2469983B1 (de) | 2016-03-09 |
Family
ID=45350701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11193962.5A Active EP2469983B1 (de) | 2010-12-22 | 2011-12-16 | Spektrum für Kurzsichtigkeit |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2469983B1 (de) |
| DE (1) | DE102011005689A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259094A1 (zh) * | 2020-01-19 | 2020-12-30 | 旭宇光电（深圳）股份有限公司 | 传感器用的led校准光源和灯具 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2011375C2 (en) | 2013-09-03 | 2015-03-04 | Gemex Consultancy B V | Spectrally enhanced white light for better visual acuity. |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5015924A (en) * | 1989-04-14 | 1991-05-14 | The United States Of America As Represented By The United States Department Of Energy | Pupillary efficient lighting system |
| EP1891367B1 (de) | 2005-06-10 | 2017-11-15 | Lemnis Lighting Patent Holding B.V. | Beleuchtungsanordnung und halbleiter-lichtquelle |
| JP4745184B2 (ja) * | 2006-10-03 | 2011-08-10 | スタンレー電気株式会社 | 照明装置 |
| EP2019250B1 (de) | 2007-07-26 | 2011-11-30 | Innolumis Public Lighting B.V. | Straßenbeleuchtungsanordnung |
| DE102007043355A1 (de) * | 2007-09-12 | 2009-03-19 | Lumitech Produktion Und Entwicklung Gmbh | LED-Modul, LED-Leuchtmittel und LED Leuchte für die energie-effiziente Wiedergabe von weißem Licht |
-
2011
- 2011-03-17 DE DE102011005689A patent/DE102011005689A1/de not_active Withdrawn
- 2011-12-16 EP EP11193962.5A patent/EP2469983B1/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020259094A1 (zh) * | 2020-01-19 | 2020-12-30 | 旭宇光电（深圳）股份有限公司 | 传感器用的led校准光源和灯具 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011005689A1 (de) | 2012-06-28 |
| EP2469983A2 (de) | 2012-06-27 |
| EP2469983A3 (de) | 2015-01-21 |
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