EP3464991A1 - Bestrahlungsvorrichtung mit leuchtstoffelement - Google Patents
Bestrahlungsvorrichtung mit leuchtstoffelementInfo
- Publication number
- EP3464991A1 EP3464991A1 EP17722463.1A EP17722463A EP3464991A1 EP 3464991 A1 EP3464991 A1 EP 3464991A1 EP 17722463 A EP17722463 A EP 17722463A EP 3464991 A1 EP3464991 A1 EP 3464991A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piezoelectric element
- pump radiation
- phosphor
- irradiation device
- phosphor element
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/70—Prevention of harmful light leakage
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
-
- 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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
- F21V25/04—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
- F21V7/26—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material the material comprising photoluminescent substances
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
Definitions
- the present invention relates to an irradiation device having a phosphor element for at least partially converting a pump radiation emitted by a pump radiation source into a conversion radiation.
- a pump radiation source high power density, z.
- a laser, and a spaced therefrom arranged phosphor element that emits on a Anre- tion with the pump radiation towards conversion radiation can be, for example, realize light sources high luminance.
- the pump radiation may be, for example, to blue light, which then in the case of partial conversion z.
- B. in mixture with yellow light as conversion radiation white light can result for lighting.
- a corresponding yellow phosphor could, for example, be cerium-doped yttrium-aluminum garnet (YAG: Ce). Presentation of the invention
- the present invention is based on the technical problem of specifying a particularly advantageous irradiation device with a phosphor element.
- an irradiation device with a pump radiation source for emitting ei ⁇ ner pump radiation, a phosphor element Konversi ⁇ on the pump radiation in a conversion radiation, a piezoelectric element with electrical connection points, via which the piezoelectric element for an electrical measurement is kontak- animal, and a carrier substrate on which the fluorescent element and the piezoelectric element are disposed, namely on the same side thereof adjacent to each other, wherein the pump radiation source and the phosphor elements of the ⁇ art relative to each other are arranged such that the light emitted by the pump radiation source in the operating pump radiation with a main beam direction on the phosphor element strikes, and wherein the piezoelectric element is thoroughlybil ⁇ det such that it surrounds the phosphor element seen in the main direction of irradiation, so that with the electrical measurement of the piezoelectric element, a mechanical integrity of the Leuchtscherl ements can be monitored; as well as an irradiation device
- fluorescent and piezoelectric element are thus on the same side of a carrier substrate and arranged next to one another, wherein the piezoelectric element, the phosphor element encloses (based on a To ⁇ running a thickness direction, see below, all the way round, that is in itself closed) , With regard to the surface directions (see below), the phosphor and the piezoelectric element can also adjoin one another, preferably they are spaced apart from one another.
- the fluorescent and the piezoelectric element are seen in the main direction of irradiation, figuratively speaking, seen at least partially overlapping in front ⁇ (but may, for example thereby. Also on opposite sides of a supporting substrate be arranged). Both variants allow a good mechanical coupling between phosphor and piezoelectric element, and it can be monitored via the electrical measurement of the piezoelectric element, the mechanical integrity of the phosphor element, ie the presence of the phosphor element in the intact state.
- the fluorescent element can be checked during operation of the irradiation apparatus or even during breaks in operation whether the fluorescent element is seated on his total beticiansge ⁇ MAESSEN assembly area.
- the bundled pumping radiation could propagate through an optic actually intended for dissipating the conversion radiation.
- this would constitute a significant source of danger, it could result in damage to the retina and at worst a loss of sight.
- some pump radiation spreads even in the case of partial conversion in normal operation by the Be ⁇ leuchtungsoptik, but whose radiance is significantly lower due to conversion and especially scattering processes in the phosphor element.
- the inventively provided piezoelectric element is anord ⁇ tion conditional - see. the two basic variants (enclosing or overlapping) - mechanically well coupled with the phosphor element.
- a change of the phosphor element for. B. a drop or even a breaking / tearing, changes the mechanical conditions of the piezoelectric element.
- an arrangement is conceivable in which the piezoelectric element is deformed when the phosphor element is detached / damaged, for example when the two are intrinsically clamped to one another.
- a deformation of the piezoelement which then enters in the event of a fault could be detected, for example, by measuring the electrical voltage or a voltage change at the connection points.
- the connection points are preferably used for a resonance measurement and become a dropped / damaged phosphor element via a changed vibration behavior detected, see below in detail.
- Regardless of the individual may be at least reduced in case of failure of the pump radiation entry, be before ⁇ preferably completely prevented, for example.
- An arrangement "on”, that is, for example, in the case of the first variant "on” the carrier substrate arranged phosphor ⁇ or piezoelectric element, generally not directly adjacent thereto mean, so it can also be provided between another layer, for example. a joining joint layer serving for assembly, for example a layer of adhesive, for example bonding glass. This applies expressly also in the case of the variant described below fabric and piezoelectric element on opposite sides of the carrier substrate ".
- the phosphor element is preferably in one piece, ver ⁇ different areas thereof are then not destructively free of each other separable. It may, for example, a matrix material, such as a ceramic, glass or a plastic material ⁇ , have, in which then the phosphor is arranged distributed to discrete areas, eg. B. in Kör ⁇ fibers of the ceramic or in particle form in the glass / plastic molded.
- the phosphor element may, for example, also be a monocrystal of the phosphor, such as a YAG: Ce monocrystal. In the crack / fracture formation discussed above, it would then be possible, for example, to locally separate such a monocrystal, the matrix material or the phosphor itself.
- the phosphor element can be operated in partial or full conversion, it is expressly made to the information in the prior art appraisal. Both an operation in reflection, in which the irradiation and emission surface of the phosphor element coincide, as well as an operation in transmission is possible, in which the two lie opposite one another.
- the "input surface” is irradiated with the pumping radiation, the convergence ⁇ sion radiation (and possibly a pro rata unconverted pump radiation) is transferred to the radiating surface which is ⁇ ser thus preferably a corresponding optical zugeord ⁇ net, z. B. a lens system.
- the Irradiation surface is the actually irradiated with pump radiation region of a generally larger overall side surface of the Leuchtstof- felements, wherein the side surface with the Einstrahl St preferably the "back" is / can be, in particular in operation in transmission; In general, however, the radiation surface can also be in the front.
- the radiating surface is corresponding to that region of a generally larger overall side surface of the phosphor element from which the conversion radiation (and, if appropriate, proportionally unconverted pump radiation) is emitted .
- pump radiation source may, for example, an LED (light emitting diode, preferably light-emitting diode) can be seen ⁇ , for instance based on InGaN or AlInGaP, but also organic-based (organic LED, OLED) , In contrast to the laser, the LED emits the light rather wide-angle, for example. Lambertsch.
- a laser which, for example, can also be constructed from a plurality of individual laser sources.
- Multiple means at least two, and Minim ⁇ least three, four, five, six, seven, eight, nine or ten other lower limits can be; zen possible Obergren- to (independent of), for example, a maximum of 500,000, 400,000, 300,000. , 200,000, 100,000, 50,000, 10,000, 1,000, 500, 250, 100, 50 and 20.
- laser source is a laser diode before ⁇ Trains t, whereby a single laser diode itself may form the pump radiation source. Alternatively, a superposition each single laser source can also irradiate a portion of the phosphor, the loading irradiated portions at least partially overlap area not ⁇ pen.
- the conversion is preferably a down-conversion, so the conversion radiation is lower energetic (longer wavelength) than the pump radiation.
- the pump radiation is preferably blue light.
- conversion radiation in the infrared is generally also conceivable (for example for a night-vision function or for data transmission), it is preferably visible light.
- the conversion radiation can form by itself (full conversion) or in mixture with proportionately unconverted pump radiation (partial conversion) preferably white light; generally the object here ⁇ up but is not limited and can, for example, also colored light (eg. as red, green and / or blue, also sequentially and / or other colors added) may be discharged.
- a measuring unit is provided, which is connectable to the electrical connection points of the piezoelectric element, preferably connected thereto.
- the measurement unit for Re ⁇ sonanz pile of the piezo element is arranged, so an altered resonance behavior can be detected as a result of all official degra ⁇ / dropped at least in part phosphor element.
- Preference is given to a resonance frequency measurement which can be carried out, for example, as a frequency sweep. With a damaged or detached phosphor element, the mass of the oscillating system and thus the resonance frequency changes.
- the measuring unit provided for the resonance measurement excites the piezoelectric element, for example with an alternating voltage, the frequency is varied over a range.
- the electrical measurement to monitor the mechanical integrity during operation antennas while the ter pump radiation source and thereby ⁇ tervals permanently or in in is (independently of the resonance measurement), or also in operating breaks when switched pump radiation source.
- the piezoelectric element is applied as a film or coating. Both can be advantageous insofar as, for example, a comparatively thin piezoelement can be realized in relation to the phosphor element. Thus, the relative contribution of the lighting ⁇ material elements of the mechanical behavior (especially resonant behavior) of the composite can be so increased and thus the measurability be improved.
- the piezoelectric element may have a thickness (taken in the thickness direction) of, for example, at least 1 ⁇ m, with a possible upper limit (independently thereof) being, for example, not more than 1 mm.
- the phosphor element may, for example, a thickness of at least 5 ym and (independently of it) of z. B. not more than 5 mm.
- the layer thickness direction is generally perpendicular to a ⁇ beam area, this is preferably planar.
- the "main direction of irradiation" results as the average value of all the directional vectors along which pump radiation is incident, with each averaging vector being weighted with the associated radiant surface during this averaging legislativenrichtun- in relation to this, an areal extent is indicated.
- the piezoelectric element is at least translucent (translucent), preferably transparent (transparent).
- a corresponding piezo element can be provided, for example, of a transparent quartz; It is, for example, a piezoelectric element of zinc oxide or aluminum nitride possible.
- the Ausgestalache described below relate to focus the second initially described Varian ⁇ te, wherein the fluorescent and the piezoelectric element at least partially overlap in the direction perpendicular to the main direction of irradiation projection plane. At least 5%, 10%, 15% and 20% thereof may coincide with the vertical projection of the piezoelectric element (cf., for example, the embodiment according to FIG. 3) with respect to the vertical projection of the phosphor element, with a further overlapping of, for example, at least 40%, 60% or 80% is possible (indicated as covering the projection of the phosphor element).
- the vertical projection of the phosphor element is completely in the vertical projection of the piezoelectric element.
- the two projections can therefore completely congruent pen overlap-, or it may be the vertical projection of the filament material elements ⁇ a (smaller) subset of those of his Piezoe ⁇ lements.
- a spectrally at least partially reflective layer is arranged between the phosphor and piezoelectric element. net, which is reflective of the pump radiation and / or the conversion ⁇ radiation.
- the layer may, for example, be reflective on a wavelength-dependent basis, for example as a dichroic layer system, and reflect only the pumping or the conversion radiation, which however transmits the other radiation.
- an overall layer which is reflective, for pumping and conversion radiation for example a metal film. The latter may be preferred in particular during operation in reflection.
- Such a reflective layer may also generally be preferred as part of the layer system, irrespective of the arrangement between the phosphor and piezoelectric element.
- the irradiation surface upstream of the pump radiation can be assigned a layer which is transmissive to the pump radiation and reflective for the conversion radiation;
- the radiating surface in relation to the con- version can for a downstream radiation transmissive, but reflective for the pump radiation layer be zugeord ⁇ net.
- a full mirror is preferred on the rear side.
- the Leuchtstoff- and the piezoelectric element directly adjacent to each other, and indeed areal.
- a corresponding interface extends in the surface directions.
- Such an interface can, for example, offer advantages insofar as it can help to optimize the mechanical coupling .
- a carrier substrate is provided, on which the phosphor and the piezoelectric element are arranged, on opposite sides thereof with respect to the thickness direction.
- an operation in reflection on the one hand mög ⁇ Lich and then the carrier substrate for example. Be made of metal, such as a stamped part, for example. From aluminum.
- operation in transmission is also possible, in which case an at least translucent, preferably transparent carrier substrate is provided, for example of glass or sapphire.
- the carrier substrate may have a larger or smaller base area (taken in the surface directions) than the piezoelement; but the two can also have the same base area (in particular in the case of a coating or covering with a foil).
- the input surface is located at a rear side of the phosphor element, and this is the piezoelectric element to ⁇ faces arranged with the back side of this (see. The above Anga ⁇ ben for arrangement "on").
- an operation is carried out in transmission (translucent / transparent piezoelectric element).
- the piezoelectric element is thus ment in Be ⁇ train to the thickness direction between the Leuchtscherle- provided and the carrier substrate.
- the information refers to "front” / "rear” or “front -" / “rear” in a direction parallel to the thickness direction, which may coincide in particular in an operation in reflection with the direction of incidence of the pump radiation (vertical radiation) or at least one directional component thereof may have (tilted radiation) or when operating in transmission at back irradiation also exactly may be opposite to the direction of radiation.
- the piezoelectric element is angeord ⁇ net at the front of the phosphor element.
- a substrate carrier may be provided, on which then the fluorescent element is arranged ⁇ , namely faces with its back the substrate ⁇ carrier.
- the front side is arranged on the fluorescent element piezo element can be seen in a plan also full ⁇ constantly cover the fluorescent element.
- the front of the fluorescent member covering the piezoelectric element only partially, for example.
- 50%, 40% and 30% possibly under- ⁇ limits can, for example, at least 10% or 20% lie ⁇ gene).
- the piezoelectric element which covers the phosphor element only partially, viewed in plan view is formed with a hole through which the conversion radiation, possibly in mixture with proportionately unconverted pump radiation, is dissipated ("emission surface") when operating in reflection, the phosphor element at this front could pass through the hole in the piezo element can also be irradiated through.
- the piezoelectric element preferably simulates the shape of the side edge of the phosphor element, the hole preferably has a corresponding shape.
- the hole may, for example, be round, in particular circular, but also angular, in particular rectangular / square.
- the radiating surface or the irradiated with the pumping radiation input surface lies completely in ⁇ nergur of the hole, so it does not overlap with the Pie ⁇ zoelement.
- the invention also relates to the use of an irradiation device disclosed herein for monitoring the mechanical integrity of the phosphor element with ⁇ means of the electrical measurement of the piezoelectric element, see. the details given above in detail.
- the irradiation device can be set up for a corresponding electrical measurement, that is to say, for example, have a measuring unit with appropriate control, or the measurement can actually be carried out within the scope of use.
- the invention also relates to the use of an irradiation device described herein for illumination, in particular for automotive lighting, in particular for automotive exterior lighting, preferably in a headlight.
- the motor vehicle is preferably an automobile.
- a Lichtquel ⁇ le high luminance is provided which, for example. A long distance, but also form a dipped beam or can support.
- the monitoring of the mechanical integrity helps to ensure high safety standards.
- the article is not limited to automotive lighting, but the irradiation device can also be used, for example, in projection applications (in particular in the field of video projection), in the field of stage and / or effect lighting and also in medical light sources, for example in the field of endoscopy and / or microscopy.
- FIG. 1 shows a first converter device with piezoelectric element in an oblique view
- FIG. 2 shows a second converter device with piezoelectric element in an oblique view
- FIG. 3 shows a third converter device with piezo element in an oblique view
- FIG. 4 shows a fourth converter device with piezoelectric element in an oblique view
- 5 shows a fifth converter device with Piezoele ⁇ ment in an oblique view
- 6 shows a sixth converter device with piezo element in an oblique view
- FIG. 7a shows a seventh converter device with piezo element in an oblique view
- FIG. 7b shows an irradiation device with the converter device according to FIG. 7a in a side view.
- FIG. 1 shows a first converter device 1 with a phosphor element 2, in the present case a YAG: Ce ceramic.
- the phosphor element 2 is mounted on a piezoelectric element 3 at ⁇ sorted, in this case a quartz.
- the piezoelectric element 3 has two electrical connection points 4a, b, via which it is electrically contactable for a resonance measurement.
- the phosphor element 2 is attached to the piezoelectric element 3 via an adhesive layer (not shown). Due to the mechanical coupling, the light ⁇ material element 2 determines the vibration behavior of the piezoelectric element 3, specifically its resonant frequency.
- the phosphor element 2 may break or break or the phosphor element 2 may also become detached from the piezoelectric element 3 as a whole.
- the resonance frequency of the oscillating system changes, which can then be determined by a resonance measurement on the piezoelectric element 3.
- the piezoelectric element 3 thus enables a monitoring of the mechanical integrity of the phosphor element 2.
- a front side 5 of the phosphor element 2 can be seen, this is mounted with its opposite back of the front 6 of the piezoelectric element 3 facing on this.
- the front face 5 of the light-emitting elements 2 ⁇ material is irradiated with a pump radiation.
- the piezoelectric element 3 is arranged according to Figure 1 on a Suub ⁇ strat 7, with its rear side faces the front side 8.
- the carrier substrate 7 is an aluminum plate and the phosphor element 2 is operated in reflection, that is to say on the front side 5 both the irradiation and the emission surface are located.
- a full or partial conversion is possible, in the latter case proportionately unconverted pump radiation (blue laser light) together with the conversion radiation (yellow light) in mixture forms the illumination light (white light) and is dissipated at the emission surface.
- a reflective layer may be between the Leuchtstof ⁇ felement 2 and the piezoelectric element 3 may be provided, such as a piezo element 3 to the sauce ⁇ VARIOUS silver film (not shown), which may help improve the light ⁇ yield.
- the viewing direction is corresponding, the view thus always falls on the front side 5 of the phosphor element 2 and (thus far visible or present), the front sides 6, 8 of the piezoelectric element 3 and the carrier substrate 7.
- the phosphor 2 and the piezoelectric element 3 are arranged on the front ⁇ side 8 of the support substrate 7, the piezo element 3 is in this case applied as silicon nitride coating on the aluminum plate, the phosphor element 2 is a YAG: Ce monocrystal.
- the piezoelectric element 3 encloses the phosphor element 2 in a main direction of irradiation, which allows a good mechanical coupling.
- the piezoelectric element 3 (a silicon nitride coating) on the front side 5 of the light-emitting elements 2 are arranged ⁇ material. It covers this ⁇ Before the side 5 only partially, namely, the piezoelectric element 3 is formed with a hole through which the fluorescent element 2 is irradiated with the pumping radiation (preferably when operating in reflection). Since the fluorescent material ⁇ element 2 can also be operated in transmission, wherein the support substrate 7 is then seen transparently ⁇ , eg. Glass or sapphire. The Pumpstrah- lung is then preferably supplied to the non visible in the figure ⁇ cash back and conversion radiation, possibly mixed with non-converted proportionally Pumpstrah ⁇ lung discharged to the front. 5
- the piezoelectric element 3 which is transparent in this case, covers the front side of the phosphor element 2.
- the piezoelectric element 3 is applied as a foil which illuminates Fabric element 2 is arranged with its opposite rear side on the carrier substrate 7.
- the latter could be reflective and the phosphor element 2 be operated in reflection;
- a transparent carrier substrate 7 and an operation of the phosphor element 2 in transmission are also possible.
- the piezoelectric element 3 itself forms the carrier, so no carrier substrate is additionally vorgese ⁇ hen.
- the piezoelectric element 3 is transparent (made of quartz), and the phosphor element 2 can be operated in trans ⁇ mission (conversion radiation dissipated on the back, or back radiation and conversion ⁇ radiation removed front side).
- the piezo element 3 and the phosphor element 2, FIG. 5, are provided in a comparable manner, but a carrier substrate 7, which is likewise transparent, is additionally arranged therebetween. Also according to FIG. 7 a, a transparent carrier substrate 7 is provided between the phosphor element 2 and the piezoelectric element 3. In this case, the carrier substrate 7 has, however, a large ⁇ ßere footprint than the piezoelectric element 3, which can help stabilize the entire structure.
- FIG. 7b shows an irradiation device with a converter device 1 according to FIG. 7a, in a side view.
- a pump radiation source 70 namely a laser diode, emits a pump radiation 71, in the present case blue laser light. This falls on a rear side 72 of the phosphor element 2.
- the yellow light emitted in response to this excitation becomes proportionate as conversion radiation in a mixture unconverted pump radiation dissipated, namely via a (not shown) illumination optics.
- the resul ⁇ animal illumination light 73 is white light. But Strah ⁇ beam path with the opposite direction (ie, exposure of the front side 5 and the exit of the illumination light on the rear side) is also possible.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016209696.6A DE102016209696B4 (de) | 2016-06-02 | 2016-06-02 | Bestrahlungsvorrichtung mit Leuchtstoffelement |
| PCT/EP2017/061175 WO2017207230A1 (de) | 2016-06-02 | 2017-05-10 | Bestrahlungsvorrichtung mit leuchtstoffelement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3464991A1 true EP3464991A1 (de) | 2019-04-10 |
Family
ID=58692519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17722463.1A Withdrawn EP3464991A1 (de) | 2016-06-02 | 2017-05-10 | Bestrahlungsvorrichtung mit leuchtstoffelement |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3464991A1 (de) |
| DE (1) | DE102016209696B4 (de) |
| WO (1) | WO2017207230A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0472520A (ja) * | 1990-07-13 | 1992-03-06 | Nagano Keiki Seisakusho Ltd | 物理量検出光センサ |
| DE4204721A1 (de) * | 1991-08-19 | 1994-03-17 | Roman Koller | Sicherheitsschaltung und Verfahren für Laser |
| JP2010118267A (ja) * | 2008-11-13 | 2010-05-27 | Panasonic Corp | 照明用光源 |
| WO2012124522A1 (ja) * | 2011-03-15 | 2012-09-20 | シャープ株式会社 | 発光装置、照明装置、前照灯および車両 |
| JP6051069B2 (ja) * | 2013-02-15 | 2016-12-21 | スタンレー電気株式会社 | 半導体発光装置 |
| DE102014014852B3 (de) * | 2014-10-07 | 2016-02-11 | Audi Ag | Überwachen einer eine Konversionsvorrichtung und ein laserbasiertes Leuchtmittel aufweisenden Beleuchtungseinrichtung |
| DE202015001682U1 (de) * | 2015-03-04 | 2015-03-24 | Osram Gmbh | Beleuchtungseinrichtung |
-
2016
- 2016-06-02 DE DE102016209696.6A patent/DE102016209696B4/de active Active
-
2017
- 2017-05-10 EP EP17722463.1A patent/EP3464991A1/de not_active Withdrawn
- 2017-05-10 WO PCT/EP2017/061175 patent/WO2017207230A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016209696A1 (de) | 2017-12-07 |
| WO2017207230A1 (de) | 2017-12-07 |
| DE102016209696B4 (de) | 2025-08-14 |
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