EP2284006A2 - Light source for UV-drying - Google Patents
Light source for UV-drying Download PDFInfo
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- EP2284006A2 EP2284006A2 EP10005831A EP10005831A EP2284006A2 EP 2284006 A2 EP2284006 A2 EP 2284006A2 EP 10005831 A EP10005831 A EP 10005831A EP 10005831 A EP10005831 A EP 10005831A EP 2284006 A2 EP2284006 A2 EP 2284006A2
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- EP
- European Patent Office
- Prior art keywords
- light source
- light
- dryer
- individual
- led
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/0443—Drying sheets, e.g. between two printing stations after printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0406—Drying webs by radiation
- B41F23/0409—Ultra-violet dryers
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- 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
- F21V5/00—Refractors for light sources
- F21V5/008—Combination of two or more successive refractors along an optical axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
Definitions
- the present invention relates to a dryer light source according to the preamble of claim 1.
- Such light sources find their preferred use in multi-color printing machines, as shown in the DE-44'42'557 (Heidelberger) are described. These multicolor printing machines, as they are also from the DE-102'25'198 are known, transport and transfer wet partial images, which are fed to a drying station after a color transfer process. These drying stations, depending on the nature of the ink, a hot air blower, an electron emitter according DE-10'2007'048'282 or have a UV dryer with UV light-emitting diode arrays, such as, for example, from the DE-10'2007'028'403 is known.
- UV-drying printing inks or coatings consist of flowable substances and include, for example, monomers, oligomers and / or photoinitiators which crosslink to form a dry film under the action of high-energy UV radiation. These substances are rapidly gaining in importance today because they can also be used for printing on less absorbent materials.
- the cure rate i. the degree of curing is, for example, dependent on the type and performance of the UV lamps, the machine speed, the materials to be printed and / or the color composition.
- the UV curing process can be used in almost all areas of the printing industry, especially where rapid drying of the printing inks and / or coatings is desired for rapid further processing.
- the process is therefore not only suitable for the accelerated printing of paper and / or cardboard for the production of glossy brochures or packaging, but also for the printing of plastic material and metal stamping.
- Suitable color hardening devices comprise a dryer light source, also referred to below as a multiple wavelength light source, as described, for example, in DE-10'2004'015'700.
- the light-emitting diodes (LEDs) used in this dryer light source are arranged in rows and not only have different wavelengths but can also be switched on separately in order, if appropriate, to use individual ones of the wavelengths separately.
- Such built-up LED dryer light sources are temperature sensitive and make because of their design (close to each other high-power LEDs) consuming coolants required.
- these dryer light sources must be mounted very close to the object to be illuminated. This leads to extremely tight space conditions, which greatly limits the variability for the construction of the dryer light source and thus the possible applications and use thereof in different printing presses.
- no complex resp. failure-prone cooling means may be required and space constraints should allow for simplified tuning to the particular use of the dryer light source in different printing presses.
- this object is achieved by a dryer light source with the features of claim 1 and in particular by a multiple-wavelength total light source with an optical arrangement for superimposing different radiation beams.
- this multiple wavelength total light source comprises at least a first individual light source and a second individual light source, the radiated light of which each having a dominant wavelength ( ⁇ 1 , or ⁇ 2 ) and optical means are provided for superimposing the radiated light of these individual light sources.
- a preferred embodiment of the dryer light source according to the invention is characterized in that the optical means comprise at least one reflector and / or at least one beam splitter, the reflector being arranged and configured such that at least the emitted light ( ⁇ 1 ) reflects the first individual light source and with the radiated light ( ⁇ 2 ) of the second individual light source superimposed incident on the object field to be illuminated, and wherein the beam splitter is arranged and configured such that the emitted light ( ⁇ 1 ) of the first individual light source is reflected onto the object field to be illuminated and the radiated light ( ⁇ 2 ) of the second single light source can pass unhindered to overlap with the emitted light ( ⁇ 1 ) of the first single light source.
- high-power LEDs (LS1, LS2, LS3) with large-aperture radiation, halogen lamps or gas discharge lamps are particularly suitable. It proves to be advantageous if the individual individual light sources (LS1, LS2, LS3) are provided with a condenser optics (CO1, CO2, CO3) and / or a collector is provided between the beam splitters and the object to be illuminated.
- CO1, CO2, CO3 condenser optics
- an optical system for homogenizing the total light impinging on the object field to be illuminated is provided between the beam splitters and the object field to be illuminated.
- the optical means for superimposing the emitted light comprise cylindrical and / or spherical optical elements.
- the dryer light source according to the invention is characterized in that at least one of the individual Single light sources comprises a lighting arrangement with an LED array of mxn LED's.
- the LED array may have a plurality of identical or different LEDs and / or the lighting arrangement may have a plurality of LED arrays.
- a UV-dryer light source (1) is known from the published patent application DE-10'2004'015'700 A1.
- the individual LEDs (2) are arranged in a housing such that their beams are directed together to an object zone. Due to the short distances to the object zone and the unwanted heat generation in the vicinity of this object zone, the LEDs are surrounded by cooling air.
- FIG. 2 shown arrangement according to the present invention comprises individual light sources (3, 3 ', 3 "), each having a dominant wavelength ⁇ 1 , ⁇ 2 , ⁇ 3 ,
- the individual light sources are arranged sequentially along a line.
- this arrangement comprises an associated condenser optic (6, 6 ', 6 "), a first (4) and second (4') beam splitter, an optic for homogenizing (7) the merged light beam and a collector (8).
- the first beam splitter (4) is highly reflective for light having a first wavelength ⁇ 1 and highly transmissive to light having a second wavelength ⁇ 2 and light having a third wavelength ⁇ 3
- the beam splitter (4 ') is highly reflective for light a second wavelength
- the collector is designed ⁇ 2 and highly transmissive for light having a third wavelength ⁇ .
- the optics for homogenization (7) of the superimposed beam can be realized with a microlens array, with a spherical lens or an aspherical lens. ( 8) may comprise an aspherical, spherical or anamorphic lens.
- the arrangement according to the invention can have both a cylindrical optic (for line lights) and a spherical optic (for punctiform or planar light sources).
- the possible wavelengths range from the UV to the IR of the electromagnetic spectrum.
- the superposition of light of multiple wavelengths with limited bandwidth is possible.
- the bandwidths can be separated from each other or only partially overlapping.
- the individual light sources typically include high power LEDs with large aperture radiation, but may also include classic illuminants, e.g. Halogen lamps or gas discharge lamps.
- Fig. 3, 4 and 5 show suitable configurations for the condenser optics (6. 6 ', 6 ")
- Fig. 3 a spherical lens configuration (9, 10)
- Fig. 4 a configuration with a light guide element (11) with lens (12)
- Fig. 5 a configuration with specially shaped optics (13).
- This shaped optical system (13) generates a plurality of differently guided radiation beams from the same individual light source.
- the condenser optics (6, 6 ', 6 ") can be rotationally symmetrical or linearly expanded
- the linear expansion can be achieved by a sequential arrangement of individual optical elements, as in FIGS FIGS. 3, 4 and 5 shown to be realized.
- the condenser optics (6, 6 ', 6 ") can also be dispensed optics for homogenization (7) of the superimposed light beam and a collector (8).
- the individual light sources 3, 3 ', 3 can also comprise LED arrays with nxn or mxn LED elements (chips) is suitable for use with small LED elements as well as for use with larger LED arrays
- the LED elements or LED arrays can be arranged sequentially along a line.
- Fig. 6 5 illustrates that when using LED arrays, a uniform multi-wavelength LED array 14 can be created by distributing LED chips 20, 21, 22 of different wavelengths in an array. Here the red-luminescent, green-luminescent and blue-luminescent LED chips are evenly distributed.
- Fig. 8 shows a linear light assembly (25) for line lights, in which the individual multi-wavelength LEDs resp. Multi-wavelength LED arrays (16) are arranged sequentially along a line.
- linear light assemblies (25) are provided with single wavelength LED arrays (17) which, as in FIG Fig. 9 shown, only have LEDs with the same wavelength spectrum, can also be realized.
- the two in Fig. 10 A) and b) light assemblies (25) represent field arrays of multi-wavelength LED arrays (16), respectively. Single-wavelength LED arrays.
- FIG Fig. 11 Another embodiment is shown.
- the LED arrays (16) form a lighting arrangement in the form of a cross-shaped field.
- Another optical arrangement for the inventive dryer light source has in the beam path between the LEDs, resp. LED arrays and the object field (5) a reflector (18).
- This reflector (18) may have an elliptical cross-section or be shaped as desired.
- the individual LED arrays are mounted on a heat dissipated carrier element with or without a cooling channel (19).
Abstract
Description
Die vorliegende Erfindung betrifft eine Trockner-Lichtquelle gemäss Oberbegriff des Anspruchs1.The present invention relates to a dryer light source according to the preamble of
Solche Lichtquellen finden ihre bevorzugte Verwendung in Mehrfarbendruckmaschinen, wie sie in der
UV-trocknende Druckfarben oder Lacke bestehen aus fliessfähigen Substanzen und umfassen bspw. Monomere, Oligomere und/oder Fotoinitiatoren, die sich unter der Einwirkung einer energiereichen UV-Strahlung zu einem trockenen Film vernetzen. Diese Substanzen gewinnen heute rasch an Bedeutung, weil sich diese auch für das Bedrucken von wenig saugfähigen Materialien verwenden lassen. Die Härtungsgeschwindigkeit, d.h. der Grad der Aushärtung ist bspw. abhängig von der Bauart und Leistung der UV-Strahler, der Maschinengeschwindigkeit, der zu bedruckenden Materialien und/oder der Farbzusammensetzung.UV-drying printing inks or coatings consist of flowable substances and include, for example, monomers, oligomers and / or photoinitiators which crosslink to form a dry film under the action of high-energy UV radiation. These substances are rapidly gaining in importance today because they can also be used for printing on less absorbent materials. The cure rate, i. the degree of curing is, for example, dependent on the type and performance of the UV lamps, the machine speed, the materials to be printed and / or the color composition.
Das UV-Härtungsverfahren - manchmal auch einfach UV-Trocknung genannt, ist in fast allen Bereichen der Druckindustrie einsetzbar, insbesondere dort wo eine schnelle Trocknung der Druckfarben und/oder Lacke für eine rasche Weiterverarbeitung erwünscht ist. Das Verfahren eignet sich also nicht nur für das beschleunigte Bedrucken von Papier und/oder Karton zur Fertigung von Hochglanzprospekten oder -verpackungen, sondern auch für das Bedrucken von Plastikmaterial und den Blechdruck.The UV curing process - sometimes also called simply UV drying, can be used in almost all areas of the printing industry, especially where rapid drying of the printing inks and / or coatings is desired for rapid further processing. The process is therefore not only suitable for the accelerated printing of paper and / or cardboard for the production of glossy brochures or packaging, but also for the printing of plastic material and metal stamping.
Für manche Anwendungen ist es aber vorteilhaft, eine UV-Trocknung mit unterschiedlichen Wellenlängen vorzunehmen, beispielsweise um eine Druckfarbe zunächst einmal nur anzutrocknen und dann im Volumen durchzuhärten oder um unterschiedliche Fotoinitiatoren zu aktivieren. Geeignete Farbhärtungsvorrichtungen umfassen eine Trockner-Lichtquelle, im Folgenden auch Mehrfach-Wellenlängen-Lichtquelle genannt, wie sie beispielsweise in der DE-10'2004'015'700 beschrieben wird. Die bei dieser Trockner-Lichtquelle verwendeten Leuchtdioden (LEDs) sind in Reihen angeordnet und weisen nicht nur unterschiedliche Wellenlängen auf, sondern sind auch getrennt einschaltbar, um gegebenenfalls einzelne der Wellenlängen getrennt einzusetzen.For some applications, however, it is advantageous to carry out a UV drying with different wavelengths, for example one First of all, just dry the printing ink and then harden it in the volume or to activate different photoinitiators. Suitable color hardening devices comprise a dryer light source, also referred to below as a multiple wavelength light source, as described, for example, in DE-10'2004'015'700. The light-emitting diodes (LEDs) used in this dryer light source are arranged in rows and not only have different wavelengths but can also be switched on separately in order, if appropriate, to use individual ones of the wavelengths separately.
Derartig aufgebaute LED-Trockner-Lichtquellen sind temperaturempfindlich und machen wegen ihrer Bauweise (dicht aneinander liegende Hochleistungs-LEDs) aufwendige Kühlungsmittel erforderlich. Darüber hinaus müssen diese Trockner-Lichtquellen wegen der grossaperturigen Abstrahlcharakteristik der Hochleistungs-LEDs sehr nahe am zu beleuchtenden Objekt angebracht werden. Dies führt zu äusserst engen Platzverhältnissen, was die Variabilität für die Bauweise der Trockner-Lichtquelle und damit die Einsatzmöglichkeiten und Verwendung derselben in unterschiedlichen Druckmaschinen stark einschränkt.Such built-up LED dryer light sources are temperature sensitive and make because of their design (close to each other high-power LEDs) consuming coolants required. In addition, because of the large-aperture radiation characteristics of the high-power LEDs, these dryer light sources must be mounted very close to the object to be illuminated. This leads to extremely tight space conditions, which greatly limits the variability for the construction of the dryer light source and thus the possible applications and use thereof in different printing presses.
Es ist deshalb Aufgabe der vorliegenden Erfindung eine Trockner-Lichtquelle zu schaffen, mit welcher die Nachteile der bekannten Trockner-Lichtquellen überwunden werden. Insbesondere sollen keine aufwendige resp. störanfällige Kühlungsmittel erforderlich sein und sollen die Platzverhältnisse eine vereinfachte Abstimmung an die besondere Verwendung der Trockner-Lichtquelle in unterschiedlichen Druckmaschinen erlauben.It is therefore an object of the present invention to provide a dryer light source with which the disadvantages of the known dryer light sources are overcome. In particular, no complex resp. failure-prone cooling means may be required and space constraints should allow for simplified tuning to the particular use of the dryer light source in different printing presses.
Erfindungsgemäss wird diese Aufgabe durch eine Trockner-Lichtquelle mit den Merkmalen des Anspruchs 1 gelöst und insbesondere durch eine Mehrfach-Wellenlängen-Gesamtlichtquelle mit einer optischen Anordnung zur Überlagerung verschiedener Strahlenbündel. Vorteilhafterweise umfasst diese Mehrfach-Wellenlängen-Gesamtlichtquelle mindestens eine erste Einzellichtquelle und eine zweite Einzellichtquelle, wobei deren abgestrahltes Licht je eine dominante Wellenlänge (λ1, resp. λ2) aufweist und optische Mittel zur Überlagerung des abgestrahlten Lichtes dieser Einzellichtquellen vorgesehen sind.According to the invention this object is achieved by a dryer light source with the features of
Eine bevorzugten Ausführungsform der erfindungsgemässen Trockner-Lichtquelle zeichnet sich dadurch aus, dass die optischen Mittel mindestens einen Reflektor und/oder mindestens einen Strahlenteiler umfassen, wobei der Reflektor derart angeordnet und ausgebildet ist, dass mindestens das abgestrahlte Licht (λ1) der ersten Einzellichtquelle reflektiert und mit dem abgestrahlten Licht (λ2) der zweiten Einzellichtquelle überlagert auf das zu beleuchtende Objektfeld auftrifft, und wobei der Strahlenteiler derart angeordnet und ausgebildet ist, dass das abgestrahlte Licht (λ1) der ersten Einzellichtquelle auf das zu beleuchtende Objektfeld reflektiert wird und das abgestrahlte Licht (λ2) der zweiten Einzellichtquelle ungehindert passieren kann, um sich mit dem abgestrahlte Licht (λ1) der ersten Einzellichtquelle zu überlagern.A preferred embodiment of the dryer light source according to the invention is characterized in that the optical means comprise at least one reflector and / or at least one beam splitter, the reflector being arranged and configured such that at least the emitted light (λ 1 ) reflects the first individual light source and with the radiated light (λ 2 ) of the second individual light source superimposed incident on the object field to be illuminated, and wherein the beam splitter is arranged and configured such that the emitted light (λ 1 ) of the first individual light source is reflected onto the object field to be illuminated and the radiated light (λ 2 ) of the second single light source can pass unhindered to overlap with the emitted light (λ 1 ) of the first single light source.
Für die einzelnen Einzellichtquellen der erfindungsgemässen Trockner-Lichtquelle erweisen sind Hochleistungs-LEDs (LS1, LS2, LS3) mit grossaperturiger Abstrahlung, Halogenstrahler oder Gasentladungslampen als besonders geeignet. Dabei erweist es sich als vorteilhaft, wenn die einzelnen Einzellichtquellen (LS1, LS2, LS3) mit einer Kondensor-Optik (CO1, CO2, CO3) versehen sind und/oder zwischen den Strahlenteilern und dem zu beleuchtenden Objekt ein Kollektor vorgesehen ist.For the individual individual light sources of the dryer light source according to the invention, high-power LEDs (LS1, LS2, LS3) with large-aperture radiation, halogen lamps or gas discharge lamps are particularly suitable. It proves to be advantageous if the individual individual light sources (LS1, LS2, LS3) are provided with a condenser optics (CO1, CO2, CO3) and / or a collector is provided between the beam splitters and the object to be illuminated.
In einer weiteren Ausführungsform der erfindungsgemässen Trockner-Lichtquelle ist zwischen den Strahlenteilern und dem zu beleuchtenden Objektfeld eine Optik zur Homogenisierung des auf das zu beleuchtende Objektfeld auftreffenden Gesamtlichtes vorgesehen.In a further embodiment of the dryer light source according to the invention, an optical system for homogenizing the total light impinging on the object field to be illuminated is provided between the beam splitters and the object field to be illuminated.
Vorteilhafterweise umfassen die optischen Mittel zur Überlagerung des abgestrahlten Lichtes zylindrische und/oder sphärische Optikelemente.Advantageously, the optical means for superimposing the emitted light comprise cylindrical and / or spherical optical elements.
In einer bevorzugten Ausführungsform zeichnet sich die erfindungsgemässe Trockner-Lichtquelle dadurch aus, dass mindestens eine der einzelnen Einzellichtquellen eine Leuchtanordnung mit einem LED-Array aus m x n LED's umfasst. Dabei kann der LED-Array eine Mehrzahl gleichartiger oder unterschiedlicher LED's aufweisen und/oder kann die Leuchtanordnung mehrere LED-Arrays aufweisen.In a preferred embodiment, the dryer light source according to the invention is characterized in that at least one of the individual Single light sources comprises a lighting arrangement with an LED array of mxn LED's. In this case, the LED array may have a plurality of identical or different LEDs and / or the lighting arrangement may have a plurality of LED arrays.
Im Folgenden soll die Erfindung an einzelnen Ausführungsbeispielen und mit Hilfe der Figuren näher erläutert werden.In the following, the invention will be explained in more detail by means of individual embodiments and with the aid of the figures.
Dabei zeigt:
-
Fig. 1 : eine Trockner-Lichtquelle gemäss Stand der Technik; -
Fig. 2 : eine optische Anordnung einer erfindungsgemässen Trockner-Lichtquelle; -
Fig. 3 : eine Kondensor-Optik mit sphärischen Linsen: -
Fig. 4 : eine Kondensor-Optik mit einer Linse und einem Lichtleiterelement; -
Fig. 5 : eine Kondensor-Optik mit einem geeignet geformten Reflektor; -
Fig. 6 : ein LED-Array mit LEDs unterschiedlicher Wellenlänge; -
Fig. 7 : ein LED-Array mit dominanter Wellenlänge; -
Fig. 8 : eine lineare Anordnung mehrerer LED-Arrays; -
Fig. 9 : eine lineare Anordnung mehrerer LED-Arrays mit gleicher spektraler Abstrahlung; -
Fig. 10 a), b): feldförmige Anordnungen mehrerer LED-Arrays; -
Fig. 11 : eine kreuzförmige Anordnung mehrerer LED-Arrays; -
Fig. 12 : eine weitere optische Anordnung einer erfindungsgemässen Trockner-Lichtquelle.
-
Fig. 1 : a dryer light source according to the prior art; -
Fig. 2 : an optical arrangement of a dryer light source according to the invention; -
Fig. 3 : a condenser lens with spherical lenses: -
Fig. 4 a condenser optic having a lens and a light guide element; -
Fig. 5 a condenser optic with a suitably shaped reflector; -
Fig. 6 an LED array with LEDs of different wavelengths; -
Fig. 7 a dominant wavelength LED array; -
Fig. 8 a linear array of multiple LED arrays; -
Fig. 9 : a linear arrangement of several LED arrays with the same spectral radiation; -
Fig. 10 a), b): field-shaped arrangements of a plurality of LED arrays; -
Fig. 11 : a cross-shaped arrangement of multiple LED arrays; -
Fig. 12 A further optical arrangement of a dryer light source according to the invention.
Die in
Die in
Die erfindungsgemässe Anordnung kann sowohl eine zylindrische Optik (für Linienlichter) als auch eine sphärische Optik (für punktförmige oder flächige Lichtquellen) aufweisen. Die möglichen Wellenlängen liegen im Bereich vom UV bis zum IR des elektromagnetischen Spektrums. Die Superposition von Licht mehrerer Wellenlängen mit begrenzter Bandbreite ist möglich. Dabei können die Bandbreiten voneinander separiert oder nur teilweise überlappend sein.The arrangement according to the invention can have both a cylindrical optic (for line lights) and a spherical optic (for punctiform or planar light sources). The possible wavelengths range from the UV to the IR of the electromagnetic spectrum. The superposition of light of multiple wavelengths with limited bandwidth is possible. The bandwidths can be separated from each other or only partially overlapping.
Die Einzellichtquellen umfassen typischerweise Hochleistungs-LEDs mit grossaperturiger Abstrahlung, können jedoch auch klassische Leuchtkörper umfassen, z.B. Halogenstrahler oder Gasentladungslampen.The individual light sources typically include high power LEDs with large aperture radiation, but may also include classic illuminants, e.g. Halogen lamps or gas discharge lamps.
Dabei kann die Kondensor-Optik (6, 6', 6") rotationssymmetrisch oder linear ausgedehnt sein. Für lineare Systeme, wie Linienlichter, kann die lineare Ausdehnung durch eine sequentielle Anordnung von einzelnen optischen Elementen, wie in den
Um eine hohe Bestrahlungsstärke auf dem Objektbereich (5) zu erreichen können die Einzellichtquellen (3, 3', 3") auch LED-Arrays mit n x n oder m x n LED-Elementen (Chips) umfassen. Es versteht sich, dass die erfindungsgemässe Anordnung damit sowohl für die Verwendung kleiner LED-Elemente als auch für die Verwendung mit grösseren LED-Arrays geeignet ist. Für Linienlichter können die LED-Elemente oder LED-Arrays sequentiell entlang einer Linie angeordnet werden.In order to achieve a high irradiance on the
Soll ein ausgewählter spektraler Bereich des emittierten Lichtes dominant sein, kann die Auswahl der einzelnen LED-Chips geändert werden. Zum Beispiel kann die dominante Emission von grünem Licht erzielt werden, indem mehr grünleuchtende LED-Chips (21) als solche mit einer anderen Wellenlänge eingesetzt werden.
- 365 nm > 630 mW
- 405 nm > 5.1 Watt
- High Power LED rot > 875 Lumen
- High Power LED grün > 2100 Lumen
- High Power LED blau > 400 Lumen
- High Power LED weiss > 800 - 1000 Lumen
- 365 nm> 630 mW
- 405 nm> 5.1 watts
- High Power LED red> 875 lumens
- High Power LED green> 2100 lumens
- High power LED blue> 400 lumens
- High Power LED white> 800 - 1000 lumens
Eine weitere optische Anordnung für die erfindungsgemässe Trockner-Lichtquelle weist im Strahlengang zwischen den LEDs, resp. LED-Arrays und dem Objektfeld (5) einen Reflektor (18) auf. Dieser Reflektor (18) kann einen elliptischen Querschnitt aufweisen oder in gewünschter Weise geformt sein. Hilfsweise sind die einzelnen LED-Arrays auf einem wärmeabführenen TrägerElement mit oder ohne Kühlkanal (19) befestigt.Another optical arrangement for the inventive dryer light source has in the beam path between the LEDs, resp. LED arrays and the object field (5) a reflector (18). This reflector (18) may have an elliptical cross-section or be shaped as desired. In the alternative, the individual LED arrays are mounted on a heat dissipated carrier element with or without a cooling channel (19).
Die Vorteile der vorliegende Erfindung sind dem Fachmann unmittelbar ersichtlich und insbesondere darin zu sehen, dass mit Hilfe von optischen Elementen und allenfalls unter Zuhilfenahme von Hochleistungs-LEDs eine auf den jeweiligen Verwendungszweck und Einsatz leicht abstimmbare, leistungsstarke und wenig störanfällige, d.h. sich nicht überhitzende Trockner-Lichtquelle geschaffen wird.The advantages of the present invention will be readily apparent to those skilled in the art, and more particularly in the fact that with the help of optical elements and possibly with the aid of high-power LEDs for the respective purpose and use easily tunable, powerful and less prone to interference, i. non-overheating dryer light source is created.
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CH00910/09A CH701249A2 (en) | 2009-06-09 | 2009-06-09 | Dryer light source. |
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Publication Number | Publication Date |
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EP2284006A2 true EP2284006A2 (en) | 2011-02-16 |
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EP10005831A Withdrawn EP2284006A2 (en) | 2009-06-09 | 2010-06-05 | Light source for UV-drying |
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US (1) | US9440429B2 (en) |
EP (1) | EP2284006A2 (en) |
CH (1) | CH701249A2 (en) |
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WO2013164051A1 (en) * | 2012-05-02 | 2013-11-07 | Heraeus Noblelight Gmbh | Lighting unit with reflector |
CN112386015A (en) * | 2020-10-26 | 2021-02-23 | 宁波方太厨具有限公司 | Disinfection cabinet |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102012008639A1 (en) * | 2012-05-02 | 2013-11-07 | Heraeus Noblelight Gmbh | Method for producing an optical module with a silicone optic |
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Also Published As
Publication number | Publication date |
---|---|
US9440429B2 (en) | 2016-09-13 |
US20100309659A1 (en) | 2010-12-09 |
CH701249A2 (en) | 2010-12-15 |
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