Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
  • G02B7/008—Mountings, adjusting means, or light-tight connections, for optical elements with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
  • G01J1/00—Photometry, e.g. photographic exposure meter
  • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
  • G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
  • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
  • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
  • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
  • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
  • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
  • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
  • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
  • G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
  • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
  • G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation

Definitions

• the invention relates to a radiation source including a light source, a first optical element, a sensor, wherein the sensor is formed and connected to the optical element such that the sensor determines a change in a size of the optical element over time, which is an optical property the radiation source influences. Furthermore, the invention relates to a process for the preparation of a product to provide a reactant, a radiation source according to the invention and illuminating the educt with the radiation source
• an object is to enable a quality control of the illumination by a radiation source.
• Another object is to use a sensor that allows efficient use of a radiation source.
• an object is to optimize the production process of products from educts. It is an object to be able to produce products, in particular the drying of objects and paints, as well as the polymerization of oligomers with a lower reject rate and overall more efficiently. Another objective is to provide printers with more consistent quality and with less maintenance.
• a radiation source including:
• the senor is formed and connected to the optical element such that a change in a size of the optical element over time can be determined with the aid of the sensor, the size influencing an optical property of the radiation source.
• the support includes at least 50 wt .-%, based on the total weight of the holder, a metal, a ceramic, a cermet, a polymer or a combination of at least two thereof.
• wherein the metal is selected from the group consisting of iron, steel, copper, aluminum, magnesium, titanium, tungsten, nickel, tantalum, niobium, an alloy of at least two these metals, an alloy of copper with zinc, lead, nickel, manganese or silicon or a mixture of at least two thereof.
• wherein the sensor is selected from the group consisting of a temperature sensor, a strain sensor, an optical sensor, a capacitive sensor, an inductive sensor, or a combination of at least two thereof.
• the at least three sensors are arranged in a plane, wherein the largest possible area spanned by the sensors has at least one third of the surface of the optical element lying in the same plane as the sensors.
• wherein the optical element is selected from the group consisting of a lens, a reflector, a diaphragm, a prism, a mirror, or a combination of at least two thereof.
• a method of making a product comprising the steps of:
• a first subject of the present invention is a radiation source including:
• the housing includes a material selected from the group consisting of a metal, a ceramic, a cermet, a polymer, or a combination of at least two thereof.
• the metal, the ceramic, the plastic can be selected from the same list as described for the holder.
• the housing includes a material as described for the holder.
• the housing comprises at least 90% by weight, based on the total weight of the housing, of aluminum.
• the shape of the housing may be any shape that would be selected by one skilled in the art.
• the shape of the housing is chosen so that it can accommodate all components of the radiation source and thereby has an opening in order to use the light of the lamp outside the housing can.
• the light source can be any light source that would be used by a person skilled in the art for a radiation source.
• a lighting means is understood to mean a means for generating radiation, which is assigned in each case to an optical element of the radiation source.
• the lighting means may comprise a plurality of light sources, such as one or more LEDs, for example in the form of one or more LED chips, or one or more LED arrays with a plurality of LEDs or LED chips.
• the first optical element may include a plurality of optical units, such as lenses, reflectors, mirrors, or the like.
• the luminous means preferably has a particular wavelength range in order to be able to illuminate a starting material in a targeted manner.
• the luminous means is preferably designed such that it emits light in the desired wavelength range efficiently.
• the illuminant preferably radiates the light in a desired spatial direction.
• the luminous means preferably has a main emission direction.
• the main emission direction is preferably predetermined by the orientation of the luminous means within the radiation source.
• the main emission of the light source preferably determined by the structure of the lamp itself. If the luminous means itself does not have a main emission direction, then the main emission direction is defined by the arrangement of the luminous means with respect to the first and the further element.
• the main emission direction of the luminous means preferably passes through the center of the first and further optical elements.
• the determination of the main emission direction can be determined by arranging the optical elements, such as diaphragms, lenses, reflectors, prisms, or a combination thereof.
• the illuminant is preferably selected from the group consisting of a halogen lamp, a mercury vapor lamp, an LED, an LED chip, an LED array, a laser, an energy-saving lamp.
• the illuminant is preferably selected from the group consisting of an LED, an LED chip, an LED array or a combination of at least two thereof.
• the LED array preferably has a number of LEDs in a range from 1 to 2000, or preferably in a range from 2 to 1500, or preferably in a range from 3 to 1000.
• the luminous means preferably has a plurality of LED arrays, which are preferably arranged next to each other, so that the emission direction of all LED arrays is preferably the same.
• the radiation source can have more than one light source.
• the radiation source preferably has the luminous means in a number in the range from 1 to 100, or preferably in a range from 2 to 50, or preferably in a range from 2 to 40.
• the illuminant relates
• the socket of the luminous means preferably has a size in a range from 1 mm 3 to 500 m 3 , or preferably a size in a range from 1, 5 mm 3 to 300 m 3 , or preferably a size in a range of 3 mm 3 up to 200 m 3 .
• This volume can be determined by the opening of the socket is also assumed to be closed.
• the illuminant preferably has an aspect ratio of the exit window in a range from 2: 1 to 1: 2, preferably 1: 1.
• An aspect ratio of the exit window is understood to be the ratio of its width to its height.
• the first optical element may be any optical element that would be used by a person skilled in the art for a radiation source. In the following, when talking about an optical element without specifying whether it is the first or another optical element, it always means the first optical element.
• the first optical element is selected from the group consisting of a lens, a reflector, a diaphragm, a prism, a mirror or a combination of at least two thereof.
• the radiation source includes more than one optical element.
• the first optical element is preferably a lens.
• the first optical element is a lens selected from the group consisting of a biconvex lens, a plano-convex lens, a concavo-convex lens, a biconcave lens, a plano-concave lens, a convex-concave lens, or a combination of at least two thereof.
• the lens is a biconvex lens.
• the optical element may include a material, preferably selected from the group consisting of glass, quartz, polymer, silicone or a combination of at least two thereof.
• the glass or quartz may be any glass or quartz that the skilled artisan would use for an optical element.
• the polymer is preferably selected from the group consisting of polymethylmethacrylate (PMMA), polycarbonate (PC), cyclo-olefin (co) polymers, such as ethylene-norbornene copolymer, or a mixture of at least two thereof.
• PMMA polymethylmethacrylate
• PC polycarbonate
• co cyclo-olefin
• the change in a size of the optical element over time is to be understood in the sense of the invention that the size of the optical element changes over time, for example the service life or the operating duration of the radiation source, to a detectable amount. Whether a change is detectable can depend on several factors. For example, the detectability of the change in size depends on the sensitivity of the sensor. Depending on where the sensor is used, the material property of the optical element or the holder can also have an influence on the detectability of the change in size. Likewise, the nature of the connection between the optical element and the holder can have an influence on the detectability of the change in size.
• the senor is selected from the group consisting of a temperature sensor, a strain sensor, an optical sensor, a capacitive sensor, an inductive sensor or a combination of at least two thereof.
• sensors conventional sensors can be used which are suitable for use in the radiation source of their power and size.
• the sensor can be in direct or indirect contact with the optical element via another material, such as in the form of a holder.
• the other material is preferably a material having similar thermal conductivities or expansion properties depending on the Temperature has the same as the first optical element.
• the further material has a higher thermal conductivity than the material of the first optical element.
• the further material has a thermal conductivity which is 2 to 1000 times, or preferably 3 to 800 times, or preferably 5 to 500 times higher than that of the optical element.
• the temperature sensor may be any sensor that allows a temperature change or absolute temperature to be determined in one location.
• the temperature sensor is a sensor selected from the group consisting of a thermistor, based on metal oxides or semiconductors, a PTC thermistor, based on a platinum, a silicon or ceramic measuring resistor, a quartz crystal, a pyroelectric material or a combination of at least two of them.
• Preferred as a temperature sensor is a PTC thermistor.
• the temperature sensor preferably has a measuring range in a range of 0 to 500 ° C, or preferably in a measuring range of 10 to 450 ° C, or preferably in a measuring range of 20 to 400 ° C.
• the temperature sensor preferably has a sensitivity in a range of 0.01 to 5 C, or preferably in a range of 0.05 to 0.9 ° C, or preferably in a range of 0.08 to 0.8 ° C.
• each sensor can be used, which makes it possible to detect a change in shape, volume or position of the first optical element. If the expansion properties at different temperatures of the material are known, it is possible to conclude from the deformation of the material on a temperature change or an absolute temperature in one place. Through the strain sensor it is possible to detect the smallest local displacements of a material with which the strain sensor is in contact.
• the strain sensor is preferably selected from the group consisting of an analog displacement sensor, an incremental displacement sensor or a combination thereof.
• the strain sensor is configured as a resistive strain gauge sensor, for example as a strain gauge, as a laser extensometer or as an optical extensometer.
• Exemplary of a strain gauge sensor is the "QF" series from TML Tokyo Sokki Kenkyujo Co., Ltf.
• the strain sensor is preferably designed such that it changes position or shape in at least one spatial direction of the optical element in a range from 0.001 to 0, 1 mm, or preferably in a range of 0.005 to 0.08 mm, or preferably in a range of 0.008 to 0.05 mm,
• the resistive strain sensor has a sensitivity k in a range of -200 to 200, or preferably in a range of -190 to 190, or preferably in a range of -180 to 180 on.
• any sensor can be used, which makes it possible to optically detect a change in shape, volume or position of the first optical element.
• the optical sensor is preferably selected from the group consisting of a camera, a photodiode sensor or a combination thereof.
• the optical sensor is oriented in a way to the optical element that no direct radiation hits the optical sensor.
• the optical sensor is preferably arranged between the exit window and the optical element in the radiation source.
• the optical sensor is preferably set up to detect the shape of the optical element.
• the optical sensor preferably has a sensitivity in a range of 0.001 to 0.1 mm, or preferably in a range of 0.005 to 0.08 mm, or preferably in a range of 0.008 to 0.05 mm.
• the optical sensor can be designed such that it detects a quantity of light that is representative of the mode of operation of the radiation source.
• the optical sensor preferably has a sensitivity in a range of 0.0001 to 0.1 Watt / cm 2 .
• the capacitive sensor can be any sensor that makes it possible to capacitively detect a change in shape, volume or position of the first optical element.
• Examples of NEN capacitive sensor are the MHR series of Althen measuring and sensor technology in Kelkheim, Germany. Preference is given to a small sensor, for example the MHR 005 of this product series.
• the inductive sensor can be any sensor that makes it possible to inductively detect a change in shape, volume or position of the first optical element. Examples of an inductive sensor are the Centrinex product range from Sicatron GmbH & Co. KG in Hagen, Germany.
• the sensor is preferably connected directly or indirectly to the optical element. A direct connection is understood according to the invention that contact at least a portion of the materials of the sensor and the optical element directly.
• An indirect connection can be made for example by clamping the optical element in a holder, wherein the holder is connected to the sensor.
• the property of the optical element to be measured by the sensor can be determined or monitored directly.
• the detection is not done directly on the optical element but it is closed by the determination of a property such as the holder on the state of the optical element.
• the indirect connection between sensor and optical element is preferred, in particular if the characteristic of the optical element would be influenced by direct connection.
• the sensor may be arranged at different positions within the radiation source with the optical element.
• the sensor is preferably arranged on the side of the optical element facing away from the luminous means. In an alternatively preferred arrangement of the sensor, the sensor is arranged on the side facing the light source on the optical element.
• the sensor according to the invention is further designed to determine a size of the optical element over time. This variable influences an optical property of the radiation source.
• the size of the optical element determined by the sensor is preferably selected from the group consisting of the temperature, the volume, the thickness, the shape, the change in a refractive index of each of the optical element or a combination of at least two thereof. By determining these quantities, preference can be given to the optical properties of the optical element. For example, it is known that the refractive index of a material may change with temperature. This change in refractive index may cause the light guided through the optical element to be deflected differently at a first temperature than at another temperature. As a result, for example, the radiation distribution of the radiation source can change.
• the radiation distribution is a measure of the homogeneity of a radiation source.
• the radiation distribution is understood to mean the distribution of the radiation intensities at different points on a surface to be irradiated or irradiated by the radiation source.
• a deviation of the radiation intensity at different points of a radiated or irradiated area of not more than 10%, preferably not more than 8%, or preferably not more than 5%, based on the average radiation intensity on the whole understood or irradiated surface.
• a deviation of the radiation intensity at different points of a radiated or irradiated area of not more than 10%, preferably not more than 8%, or preferably not more than 5%, based on the average radiation intensity on the whole understood or irradiated surface.
• the change in refractive index is most often caused by the change in thickness of the material in the optical element at different locations, which may be due to changes in temperature.
• the change in size can thus be determined both by determining the temperature or a change in shape at the optical element.
• a change in size is thus determined over time.
• the time is preferably the operating time of the radiation source, ie the time from the start of the radiation source.
• the sensor preferably determines measured values during the operating time of the radiation source.
• the time in which the size is determined is in a range of 1 minute to 20,000 hours, or preferably in a range of 1 hour to 18,000 hours, or preferably in a range of 10 hours to 15,000 hours.
• the respective measured value is preferred of the sensor at a certain time with a setpoint stored in an evaluation unit.
• the sensor is preferably connected to the evaluation unit such that the measured values determined by the sensor are transmitted to the evaluation unit in a timely manner, for example every second to every minute.
• preference is given to influencing the cause of the deviation in the form of a resulting measure.
• the resulting measure is selected from the group consisting of cooling the radiation source, cooling the optical element, switching off the radiation source, replacement of the optical element, reduction of the energy input to the optical element or a combination of at least two thereof.
• the radiation source is turned off.
• a resulting measure is preferably initiated when a deviation Del ta L / L of the shape of the optical element in at least one spatial direction in a range of 5 * 10 "4 to 5 * 10 "2 , or preferably in a range of 3 * 10 " 4 to 3 * 10 “2 , or preferably in a range of 10 " 3 to 10 "2 , where L is for expansion of the optical element into one of the three Spatial directions stands.
• a resulting measure is preferably initiated when a deviation of a predetermined target temperature T so n by an amount preferably in a range of 20 to 50 ° C, or preferably in a range of 25 to 35 ° C, or preferably in a range of 27 to 32 ° C.
• T is n so in a temperature range of 20 to 600 ° C, or preferably in a range of 30 to 400 ° C, or preferably in a range of 40 to 300 ° C.
• the first optical element includes a holder, wherein the sensor is connected to the optical element via the holder.
• the holder preferably has a relative thermal conductivity ⁇ in a range from 1 to 1000 W / (m * K), or preferably in a range from 5 to 420 W / (m * K), or preferably in a range from 10 to 400 W / (m * K).
• the holder preferably has a coefficient of linear expansion ⁇ in a range of 1 * 10 -6 to 50 * 10 -6 / K, or preferably in a range of 2 * 10 -6 to 40 * 10 -6 / K, or preferably in one range from 3 * 10 "6 to 30 * 10 "6 / K.
• the holder includes the further material is preferably in a range of 10 to 100 wt .-%, or preferably in a range of 20 to 100 wt .-%, or preferably in a range of 50 to 100
• the holder is preferably connected to the optical element in such a way that at least one, preferably at least two, or preferably all of the following properties are satisfied: a) the holder surrounds the first optical element at least 30% along a circumferential line of the optical element;
• the holder runs along the longest circumferential line of the optical element
• the holder covers less than 10% of the surface of the optical element
• the holder is in direct contact with the first optical element
• the mount does not affect the optical properties of the optical element or in a measurable and reproducible manner
• the holder is constructed of a material with the lowest possible coefficient of thermal expansion.
• a coefficient of thermal expansion which is as low as possible is understood to mean a coefficient of linear expansion ⁇ of less than 40 * 10 -6 / K.
• the support preferably has the task of precisely holding and positioning the first optical element in order to avoid movement of the first optical element during use of the radiation source.
• the holder is preferably configured to provide the optical element with a precision in a range of 0.01 to 1 mm, preferably in a range of 0.02 to 0.8 mm, or preferably in a range of 0.05 to 0.5 mm in each direction can fix.
• a direct connection means a direct contact of the materials of the first optical element and the holder. This can be done for example by simply stacking, pinching, holding or a combination thereof.
• the direct connection can be effected by, for example, gluing the holder to the first optical element.
• the support includes at least 50% by weight, preferably at least 60% by weight, or preferably at least 70%, based on the total weight of the support, a metal, a ceramic, a cermet, a polymer Silicone or a combination of at least two of them.
• the silicone is preferably selected from the same group as described for the first optical element.
• the sensor is selected from the group consisting of a temperature sensor, a strain sensor or a combination thereof.
• the senor is connected to the optical element in a manner such that less than 20%, or preferably less than 15%, or preferably less than 10%, of the radiation emitted by the illuminant strikes the sensor.
• the sensor is preferably irradiated indirectly by the lighting means.
• the holder is preferably located between the illuminant and the sensor. Consequently, the sensor is in the light shade of the holder. This has the advantage that the sensor is not overloaded by the radiation of the lamp.
• a photodiode is preferably attached to the holder. The photodiode is preferably first irradiated with a plurality of known amounts of light to determine a calibration curve.
• the calibration curve can be used during the life of the radiation source to the exact amount of light to determine the holder. If a temperature sensor is used to determine the change in a size of the optical element, it can be concluded from the incident light quantity and the temperature determined by the sensor, in which region the temperature lies in the middle of the main emission direction. From the measured temperature, it can be preferably calculated whether the first optical element has a shape that is changed at room temperature compared to its original shape.
• the sensor is connected to the optical element in a manner such that an expansion of the first optical element in all three spatial directions can be determined.
• the extension of the first optical element in all three spatial directions can be achieved by using, for example, a strain sensor.
• the strain sensor is connected to the first optical element such that a part of the strain sensor extends in each spatial direction.
• the strain sensor is connected to the first optical element in such a way that at least a part of the strain sensor extends in the direction of the main radiation direction, at least one part extends perpendicular to the radiation direction and at least one part extends perpendicularly to the perpendicularly extended direction.
• at least 10%, or preferably at least 15%, or preferably at least 20%, of the expansion surface of the strain sensor extends in the main emission direction and in each case in the two perpendicularly oriented directions.
• the further optical element is selected from the group of optical elements listed for the first optical element. Furthermore, the further optical element can be combined with additional optical elements from the same group.
• the further optical element is a reflector or a lens.
• the further optical element is a converging lens, in particular a plano-convex lens.
• the further optical element is connected to the lighting means such that it is cooled by the cooling unit.
• the luminous means emits light in a wavelength range of 100 nm to 10 ⁇ m, preferably in a range of 120 to 9 ⁇ m, or preferably in a range of 140 to 8 ⁇ m.
• the illuminant preferably emits light in a wavelength range from 780 nm to 10 ⁇ m.
• the illuminant likewise preferably radiates light in a wavelength range of 150 to 420 nm, or preferably in a range of 160 to 410 nm, or preferably in a range of 170 to 400 nm.
• Another object of the invention is a method for producing a product, comprising the steps:
• Illumination of the starting material can be carried out in any way that would be selected by a person skilled in the art.
• the educt is illuminated by the light source of the radiation source so that it can be converted into the product under an optimized residence time.
• the residence time of the educt under the influence of the radiation source is selected in a range of 1 millisecond to 10 hours, or preferably in a range of 10 milliseconds to 1 hour, or preferably in a range of 30 milliseconds to 10 minutes.
• the product is obtained by a change in the state of the educt.
• the state change is preferably selected from the group consisting of drying a wet surface, curing a paint, illuminating a dark room or the combination of at least two of them.
• the product is obtained from the educt by a conversion, the chemical reaction of two starting molecules,
• the educt is preferably selected from the group consisting of a liquid phase, a moist object, a first state.
• the liquid phase is preferably selected from the group consisting of a mixture of at least two chemicals or materials, a solution of a polymer which is uncrosslinked or a mixture thereof.
• Another object of the invention is a use of a sensor for homogenizing the radiation distribution of a radiation source according to one of the embodiments
• a sensor is used, as previously described in connection with the radiation source.
• the homogenization of the radiation distribution of the radiation source preferably leads to a homogeneous irradiation of a reactant, wherein the deviation of the radiation distribution of the light source is determined by a desired radiation distribution and the light source is switched off when the radiation distribution deviates more than 10% from a desired radiation distribution.
• Another object of the invention is a use of a radiation source according to one of the embodiments
• the efficiency of the conversion or state change of educts into products is preferably achieved by already resulting in a minimal deviation of the measured values of the sensor from a predefined setpoint value to a resulting measure.
• the resulting measure is preferably selected from the group consisting of cooling the radiation source, cooling the optical element, switching off the radiation source, replacement of the optical element, reduction of the energy input to the optical element or a combination of at least two thereof.
• the radiation source is turned off. DESCRIPTION OF THE FIGURES
• Figure 1 a schematic representation of a radiation source according to the invention with lens as the first and further optical element;
• Figure 1 b is a schematic representation of a radiation source according to the invention with a lens as the first optical element and reflector as a further optical element;
• FIG. 2 shows a schematic representation of a radiation source according to the invention with LED
• Figure 3 is a schematic representation of a strain sensor on a holder of the optical element
• Figure 4 is a schematic representation of a temperature sensor in the form of a sensor chain on a holder of the optical element
• Figure 5 is a schematic representation of several separate temperature sensors on a
• Figure 6 is a schematic representation of the method steps of an inventive
• FIG. 1 a schematically illustrates a radiation source 10 which has a housing 22 in which a luminous means 12 is arranged, which can be temperature-controlled by means of a cooling unit 30.
• the light of the luminous means 12 is bundled by a further optical element 20 in the direction of the first optical element 14.
• the first optical element 14, here in the form of a convex-convex converging lens 14, preferably influences the propagation of the light from the luminous means 12 in such a way that a wave front that is as homogeneous as possible passes out of the housing 22 through the window 24 of the radiation source 10 to achieve as homogeneous a radiation distribution on a surface to be illuminated (not shown here).
• the light preferably moves in the main emission direction 25 from the luminous means 12 in the direction of the exit window 24.
• the light is converted by the first optical element 14 and the further optical element 20 into a homogeneous wavefront. shaped.
• the light is preferably used to homogenously irradiate a starting material, for example in the form of a space, an object or a liquid, in order to obtain a product.
• a number of objects can be irradiated on a moving belt moving relative to the radiation source 10 in order, for example, to achieve a drying of the object or its surface.
• the converging lens 14 is held by a holder 18, in its position in front of the lamp 14.
• the holder 18 is connected to the first optical element 14 so that the first optical element 14 on the one hand held precisely on the other hand, a heat transfer from the optical element to the holder is as high as possible.
• the holder preferably has a relative thermal conductivity ⁇ in a range from 1 to 1000 W / (m * K).
• the sensor 15 is connected to the bracket 18. It is also conceivable to connect the sensor 15 directly to the first optical element 14.
• the sensor 15 is connected by means of a cable to an evaluation unit 26. This connection could also be wireless if the sensor is equipped with a transmitter, or the transmission of the measured data of the sensor is inductive.
• the sensor 15 is arranged on the side facing away from the light-emitting means 12 on the holder 18.
• the sensor 15 may also be arranged on the side facing the light-emitting means 12 on the holder 18.
• the radiation source 10 in the schematic illustration of FIG. 1 b has the same structure as the radiation source 10 in FIG. 1 a, with the difference that the light emitted by the luminous means 12 is transmitted to the first optical element 14 via a reflector as a further optical element 20 is steered.
• the radiation source 10, shown in the schematic representation of Figure 2 has the same structure as the radiation source 10 of Figure 1 a, with the difference that the lighting means 12 consists of a plurality of light sources 13.
• the plurality of light sources 13 are LEDs of an LED array, which may contain more than 1000 individual LEDs.
• the first optical element 14 includes a plano-convex lens 14, which is preferably configured such that the light from the light sources 13 is aligned parallel to the main beam direction 25.
• the first optical element 14 is preferably formed in one piece.
• the plurality of light sources 13 is also cooled by a cooling unit 30 here.
• the sensor or the sensors 15, 16, 17 can likewise be equipped with an ejector. unit 26 (not shown here). This is preferably a temperature sensor 17. Alternatively, a strain sensor 16 can also be used.
• the holder 18 preferably completely surrounds the first optical element. This is not shown here, since the representation represents a cross section through the radiation source 10.
• the housing 22 together with the exit window 24 surrounds the light source 12, the holder 18, the sensor 15, 16, 17 and the first optical element and the further optical element 20 completely.
• the further optical element 20 of the radiation source 10 for each light source 13 each have a shape 20a in the form of a plurality of convex lenses 20a in the first optical element 20. In this way, the light of each light source 13 can be individually changed in its propagation by a formation 20a of the first optical element 20, preferably bundled in the main emission direction 25.
• FIG. 3 schematically shows an arrangement of a first optical element 14, in the form of a lens 14 in a holder 18.
• the holder 18 is arranged completely circumferentially around a peripheral line 28 of the lens 14, completely enclosing the lens 14 with it.
• a strain sensor or temperature sensor 15, 16, 17 over the entire circumferential line 28 of the holder 18 and thus also the lens 14 is arranged.
• the materials of the optical element 14 and the holder 18 are matched to one another such that a change in the optical properties of the optical element 14 is possible by the sensor 15, 16, 17.
• FIG. 4 shows a schematic representation of a further arrangement of the first optical element 14, the holder 18 and a multiplicity of sensors 15.
• the sensors are preferably temperature sensors 17, which are connected to one another via an electrical line 21 in order to obtain the measured values of Sensors 15 can be forwarded to the evaluation unit 26.
• This arrangement thus forms a sensor chain 19.
• FIG. 5 likewise shows schematically a first optical element 14 with a holder 18 and a multiplicity of sensors 15, in this case three sensors 15. Temperature sensors 17 are preferably connected to the evaluation unit 26 individually via electrical lines 21.
• FIG. 6 schematically shows the process for producing a product from an educt.
• the starting material is provided in a first step i. 40. This can be done for example in the form of a wet or wet object on a conveyor belt.
• the radiation source 10 is provided so that in a third step iii. 60, the lighting of the starting material, the starting material is illuminated as homogeneously as possible in order to be changed to a product.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Led Device Packages (AREA)
• Investigating Or Analysing Materials By Optical Means (AREA)
• Length Measuring Devices By Optical Means (AREA)
• Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
• Led Devices (AREA)
• Mounting And Adjusting Of Optical Elements (AREA)
• Lens Barrels (AREA)
• Securing Globes, Refractors, Reflectors Or The Like (AREA)
• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
• Circuit Arrangement For Electric Light Sources In General (AREA)

Applications Claiming Priority (2)

Publications (1)

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• 2015
  • 2015-07-08 DE DE102015212785.0A patent/DE102015212785B4/de not_active Expired - Fee Related
• 2016
  • 2016-05-16 TW TW105115082A patent/TWI611281B/zh not_active IP Right Cessation
  • 2016-06-07 CA CA2991534A patent/CA2991534A1/en not_active Abandoned
  • 2016-06-07 EP EP16728916.4A patent/EP3320383A1/de not_active Withdrawn
  • 2016-06-07 US US15/741,725 patent/US20180195898A1/en not_active Abandoned
  • 2016-06-07 CN CN201680039909.5A patent/CN107735711A/zh active Pending
  • 2016-06-07 WO PCT/EP2016/062835 patent/WO2017005434A1/de active Application Filing
  • 2016-06-07 KR KR1020187003613A patent/KR20180027558A/ko not_active Application Discontinuation
  • 2016-06-07 JP JP2018500465A patent/JP2018523916A/ja active Pending

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