Pixelated laser phosphor including ceramic phosphor tiles surrounded by phosphor particles in a medium

Abstract

The invention provides a light emitting arrangement (2000) comprising an array (2005) of light emitters (2100), and a host material (2210) at least partially configured between the light emitters (2100), wherein the light emitters (2100) comprise a first light emitting material (2110), wherein the host material (2210) comprises a light transmissive material (2215), wherein the light transmissive material (2215) comprises a second light emitting material (2220), wherein the first light emitting material (2110) and the light transmissive material (2215) are different materials; and wherein the light emitters (2100) comprise ceramic bodies.

Description

Technical Field

[0001] This invention relates to a light generation system comprising a light-emitting arrangement. Furthermore, this invention relates to a light generation device comprising such a light generation system. Background Technology

[0002] Light sources such as laser sources are known in the art. For example, US20180316160 describes an integrated white light source comprising: a laser diode device comprising gallium- and nitrogen-containing materials and configured as an excitation source; a phosphor component configured as a wavelength converter and emitter and coupled to the laser diode device; a common support component configured to support the laser diode device and the phosphor component; a heat sink thermally coupled to the common support component, the common support component configured to transfer heat energy from the laser diode device and the phosphor component to the heat sink; an output facet configured on the laser diode device to output a laser beam comprising electromagnetic radiation selected from violet and / or blue emission having a first wavelength ranging from 400 nm to 485 nm; and a free space between the output facet and the phosphor component, having the capability to transfer the laser beam from the laser diode device to the phosphor component. The non-guided characteristics of the excitation surface; the incident angle range between the laser beam and the excitation surface of the phosphor component, such that, on average, the laser beam has an incident direction deviating from the normal of the excitation surface, and the beam spot is configured for a specific geometry and shape; wherein the phosphor component converts a portion of the electromagnetic radiation from the laser beam having a first wavelength into emitted electromagnetic radiation having a second wavelength longer than the first wavelength; a plurality of scattering centers associated with the phosphor component for scattering the electromagnetic radiation having the first wavelength from the laser beam incident on the phosphor component; a reflection mode characterizing the phosphor component such that the laser beam is incident on a beam spot region on the excitation surface of the phosphor component, and white light emission is output substantially from the same beam spot region, the white light emission comprising a mixture of wavelengths characterized by at least a second wavelength of the electromagnetic radiation emitted from the phosphor component; and a shape factor characterizing the package of the integrated white light source, the shape factor having length, width, and height dimensions. Summary of the Invention

[0003] Although white LED sources can provide, for example, up to approximately 300 lm / mm² 2 The intensity; however, static phosphor-converted white laser sources can provide even higher intensities, up to approximately 20,000 lm / mm. 2The intensity of the light emission is high. Ce-doped garnet (e.g., YAG, LuAG) is the most suitable light-emitting converter, which can be used for blue laser pumping because the garnet matrix has very high chemical stability. Furthermore, at low Ce concentrations (e.g., below 0.5%), temperature quenching can occur only above about 200°C. Additionally, the emission from Ce has a very fast decay time, thus optical saturation is essentially avoided. Assuming, for example, reflective mode operation, the blue laser can be incident on the phosphor. In the embodiments, this allows for almost complete conversion of the blue light, resulting in the emission of the converted light. It is for this reason that garnet phosphors with relatively high stability and thermal conductivity are recommended. However, other phosphors can also be applied. When using extremely high power densities, thermal management can still be a problem.

[0004] High-brightness light sources can be used in applications such as projection, stage lighting, spotlights, and automotive lighting. For this purpose, laser phosphor technology can be used, where a laser provides the laser beam, and a phosphor, for example (remotely), converts the laser beam into converted light. In embodiments, the phosphor can be positioned on or inserted into a heat sink to improve thermal management and thus achieve higher brightness.

[0005] One problem that may be associated with this type of (laser) source is the thermal management of the (ceramic) phosphor. Other issues associated with this type of laser source may include the desire to create compact, high-power devices, which may not always be relatively easy. Other issues may include the desire to control the beam shape and / or spatial power distribution of the beam emanating from the phosphor.

[0006] Therefore, one aspect of the present invention is to provide an alternative light generation system that preferably further eliminates at least partially one or more of the aforementioned disadvantages. The object of the present invention may be to overcome or improve at least one disadvantage of the prior art, or to provide a useful alternative.

[0007] In a first aspect, the present invention provides a light generation system for generating system light, the light generation system comprising one or more light sources and a light-emitting arrangement comprising an array of light-emitting bodies and a matrix at least partially disposed between the light-emitting bodies. The light-emitting bodies comprise a first light-emitting material. The matrix comprises a light-transmitting material. The light-transmitting material comprises a second light-emitting material (which may be the same as the first light-emitting material in some embodiments, and may be different from the first light-emitting material in others). The first light-emitting material and the light-transmitting material are different materials. The light-emitting body comprises a ceramic body. Therefore, the light-emitting arrangement comprises an array of light-emitting bodies and a matrix at least partially disposed between the light-emitting bodies, wherein the light-emitting bodies comprise the first light-emitting material, wherein the matrix comprises a light-transmitting material, wherein the light-transmitting material comprises the second light-emitting material, wherein the first light-emitting material and the light-transmitting material are different materials; and wherein the light-emitting body comprises a ceramic body. The light-transmitting material comprises one or more of glass, inorganic polymer materials, organic polymer materials, quartz, and silicon dioxide. The system light includes light from one or more of a first luminescent material and a second luminescent material, and optionally includes light from one or more light sources; and wherein the system light is white light having a correlated color temperature in the range of 2700K to 6500K.

[0008] This luminescent arrangement allows for the generation of different beam shapes of the luminescent material based on the focusing of the excitation beam. Optionally, this arrangement allows for different spectral power distributions based on the focusing of the excitation beam; this is particularly true when different luminescent materials are present. Furthermore, this arrangement allows for control of the beam shape and spectral power distribution of the light emanating from the arrangement based on the light source used to illuminate it. Additionally, this arrangement can reduce stress, for example, due to heating, because the luminescent bodies are not formed as a single large body, but are provided as multiple (smaller) bodies. Therefore, thermal management can be optimized. Moreover, providing smaller luminescent bodies is easier than providing (single or multiple) larger luminescent bodies. Therefore, production can be easier, and the service life can be longer.

[0009] As described above, the present invention provides a light-emitting arrangement. The light-emitting arrangement includes an array of light-emitting elements and a matrix at least partially disposed between the light-emitting elements.

[0010] In the embodiments, both the luminescent body and the matrix can include luminescent materials. Several aspects of the luminescent materials are described below. These aspects can be applied to both the first and second luminescent materials.

[0011] The term "luminescent material" specifically refers to a material capable of converting one or more of a first radiation, particularly UV radiation and blue radiation, into a second radiation. Typically, the first and second radiations have different spectral power distributions. Therefore, instead of the term "luminescent material," the terms "luminescent converter" or "converter" may also be used. Generally, the second radiation has a spectral power distribution at a wavelength larger than that of the first radiation; this is the case in so-called down-conversion. However, in certain embodiments, the second radiation has a spectral power distribution with an intensity at a wavelength smaller than that of the first radiation; this is the case in so-called up-conversion.

[0012] In embodiments, "luminescent material" can specifically refer to a material capable of converting radiation into, for example, visible light and / or infrared light. For example, in embodiments, the luminescent material may be capable of converting one or more of UV radiation and blue radiation into visible light. In certain embodiments, the luminescent material may also convert radiation into infrared radiation (IR). Therefore, when excited by radiation, the luminescent material emits radiation. Typically, the luminescent material will be a down-converter, i.e., radiation of a smaller wavelength is converted into radiation with a larger wavelength (λ). ex <λ em Although in certain embodiments, the luminescent material may include an upconverter luminescent material, i.e., radiation of a larger wavelength is converted into radiation of a smaller wavelength (λ). ex >λ em ).

[0013] In embodiments, the term "luminescence" may refer to phosphorescence. In embodiments, the term "luminescence" may also refer to fluorescence. Instead of "luminescence," the term "emission" may also be used. Therefore, the terms "first radiation" and "second radiation" may refer to excitation radiation and emission (radiation), respectively. Similarly, the term "luminescent material" in embodiments may refer to phosphorescence and / or fluorescence. The term "luminescent material" may also refer to a variety of different luminescent materials. Examples of possible luminescent materials are given below.

[0014] In the embodiments, the luminescent material is selected from garnet and nitride, particularly garnet and nitride doped with trivalent cerium or divalent europium, respectively. The term "nitride" may also refer to nitrogen oxides or nitrogen silicates, etc.

[0015] In a particular embodiment, the luminescent material includes A3B5O. 12Ce-type luminescent materials, wherein A in embodiments comprises one or more of Y, La, Gd, Tb, and Lu, particularly at least one or more of Y, Gd, Tb, and Lu, and wherein B in embodiments comprises one or more of Al, Ga, In, and Sc. Specifically, A may comprise one or more of Y, Gd, and Lu, such as particularly one or more of Y and Lu. Specifically, B may comprise one or more of Al and Ga, more particularly comprising at least Al, such as substantially all Al. Therefore, cerium-containing garnet materials are particularly suitable luminescent materials. Examples of garnet particularly include A3B5O. 12 Garnet, wherein A comprises at least yttrium or lutetium, and wherein B comprises at least aluminum. This garnet may be doped with cerium (Ce), praseodymium (Pr), or a combination of cerium and praseodymium; however, it is particularly doped with Ce. Specifically, B comprises aluminum (Al), however, B may also partially comprise gallium (Ga) and / or scandium (Sc) and / or indium (In), particularly up to about 20% of Al, more particularly up to about 10% of Al (i.e., the B ions consist essentially of 90 or more mol% Al and 10 or less mol% of one or more of Ga, Sc, and In); B may particularly comprise up to about 10% gallium. In another variant, B and O may be at least partially substituted with Si and N. Element A may particularly be selected from the group consisting of yttrium (Y), gadolinium (Gd), terbium (Tb), and lutetium (Lu). Furthermore, Gd and / or Tb are present, particularly only in amounts up to about 20% of A. In a particular embodiment, the garnet luminescent material includes , where x is equal to or greater than 0 and equal to or less than 1. The term ":Ce" indicates that a portion of the metal ions in the luminescent material (i.e., a portion of the "A" ions in garnet) are replaced by Ce. For example, in In this case, a portion of Y and / or Lu is replaced by Ce. This is known to those skilled in the art. Ce will typically replace no more than 10% of A; generally, the Ce concentration will be in the range of 0.1% to 4%, particularly in the range of 0.1% to 2% (relative to A). Assuming 1% Ce and 10% Y, the perfectly correct molecular formula could be... It is known to those skilled in the art that Ce in garnet is essentially or only in a trivalent state.

[0016] In the embodiments, the luminescent material (therefore) comprises A3B5O. 12 In a particular embodiment, up to 10% of the BO can be replaced by Si-N.

[0017] In a particular embodiment, the luminescent material includes , where xl + x2 + x3 = l, where x3 > 0, where 0 < x2 + x3 ≤ 0.2, where yl + y2 = l, where 0 ≤ y2 ≤ 0.2, where A' includes one or more elements selected from the group consisting of lanthanide elements, and where B' includes one or more elements selected from the group consisting of Ga, In, and Sc. In an embodiment, x3 is selected from the range 0.001 - 0.1. In the present invention, particularly xl > 0, such as > 0.2, for example at least 0.8. Garnets having Y can provide a suitable spectral power distribution.

[0018] In a particular embodiment, at most 10% of B-O can be replaced by Si-N. Here, B in B-O refers to one or more of Al, Ga, In, and Sc (and O refers to oxygen); in a particular embodiment, B-O can refer to Al-O. As described above, in a particular embodiment, x3 can be selected from the range 0.001 - 0.04. In particular, such a luminescent material can have a suitable spectral distribution (but see below), have a relatively high efficiency, have a relatively high thermal stability, and allow a high CRI (in combination with the first light source light and the second light source light (and the filter)). Thus, in a particular embodiment, A can be selected from the group consisting of Lu and Gd. Alternatively or additionally, B can include Ga. Thus, in an embodiment, the luminescent material comprises , where Lu and / or Gd can be available. Even more particularly, x3 is selected from the range 0.001 - 0.1, where 0 < x2 + x3 ≤ 0.1, and where 0 ≤ y2 ≤ 0.1. Further, in a particular embodiment, at most 1% of B-O can be replaced by Si-N. Here, the percentage refers to moles (as known in the art); see also, for example, EP3149108. In yet another particular embodiment, the luminescent material comprises , where xl + x3 = l, and where 0 < x3 ≤ 0.2, such as 0.001 - 0.1.

[0019] In a particular embodiment, the light generating device can include only a luminescent material selected from the cerium-containing garnet type. In another particular embodiment, the light generating device includes a single type of luminescent material, such as . Thus, in a particular embodiment, the light generating device includes a luminescent material, where at least 85 wt%, even more particularly at least about 90 wt%, for example even more particularly at least about 95 wt% of the luminescent material comprises Here, A' includes one or more elements selected from the group consisting of lanthanide elements, and B' includes one or more elements selected from the group consisting of Ga, In, and Sc, where xl + x2 + x3 = l, where x3 > 0, where 0 < x2 + x3 ≤ 0.2, where yl + y2 = l, and where 0 ≤ y2 ≤ 0.2. In particular, x3 is selected from the range 0.001 - 0.1. Note that in the embodiments, x2 = 0. Alternatively or additionally, in the embodiments, y2 = 0.

[0020] In certain embodiments, A can particularly include at least Y, and B can particularly include at least Al.

[0021] In embodiments, the luminescent material can alternatively or additionally include and / or and / or one or more of etc., where M includes one or more of Ba, Sr, and Ca. In particular, in the embodiments, M includes at least Sr. Thus, in the embodiments, the luminescent material can include one or more materials selected from the group consisting of: , and . In these compounds, europium (Eu) is substantially or only divalent and replaces one or more of the indicated divalent cations. Generally, the amount of Eu present does not exceed 10% of the cations; its presence will be particularly in the range of about 0.5% to 10%, more particularly in the range of about 0.5% to 5%, relative to the (multiple) cations it replaces. The term ":Eu" indicates that part of the metal ions are replaced by Eu (replaced by in these examples). For example, assuming contains 2% Eu, the correct chemical formula can be . Divalent europium typically replaces divalent cations, such as the divalent alkaline earth cations mentioned above, particularly Ca, Sr, or Ba. The material can also be indicated as , where M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr), and calcium (Ca); in particular, M includes calcium or strontium, or calcium and strontium, more particularly calcium, in this compound. Here, Eu is introduced and replaces at least a part of M (i.e., one or more of Ba, Sr, and Ca). Additionally, the material can also be indicated as M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr), and calcium (Ca); in particular, M comprises Sr and / or Ba in the compound. In another specific embodiment, M consists of Sr and / or Ba (without regard to the presence of Eu), particularly 50%-100%, more particularly 50%-90% Ba and 50%-0%, particularly 50%-10% Sr, such as... (i.e., 75% Ba; 25% Sr). Here, Eu is introduced and replaces at least a portion of M, i.e., one or more of Ba, Sr, and Ca. Similarly, the material... It can also be indicated as M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr), and calcium (Ca); in particular, M includes calcium or strontium, or calcium and strontium, more particularly calcium, in the compound. Here, Eu is introduced and replaces at least a portion of M (i.e., one or more of Ba, Sr, and Ca). As those skilled in the art will know, Eu in the above-described luminescent material is essentially or only in a divalent state.

[0022] In this embodiment, the red luminescent material may include a selection from [list of materials]. , and One or more materials in the group. In these compounds, europium (Eu) is essentially or only divalent and substitutes for one or more of the divalent cations shown. Typically, the amount of Eu present does not exceed 10% of the cation; its presence will be relative to the cation(s) it substitutes, particularly in the range of about 0.5% to 10%, more particularly in the range of about 0.5% to 5%. The term ":Eu" indicates that a portion of the metal ion is substituted by Eu (in these examples, it is...) (Replace). For example, assume It contains 2% Eu, and the correct molecular formula can be: Divalent europium often substitutes for divalent cations, such as the aforementioned divalent alkaline earth cations, especially Ca, Sr, or Ba.

[0023] Material It can also be indicated as M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr) and calcium (Ca); in particular, M includes calcium or strontium, or calcium and strontium, more particularly calcium in the compound. Here, Eu is introduced and replaces at least a portion of M (i.e., one or more of Ba, Sr and Ca).

[0024] In addition, materials It can also be indicated as M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr), and calcium (Ca); in particular, M comprises Sr and / or Ba in the compound. In another specific embodiment, M consists of Sr and / or Ba (without regard to the presence of Eu), particularly 50% to 100%, more particularly 50% to 90% Ba and 50% to 0%, particularly 50% to 10% Sr, such as... (i.e., 75% Ba; 25% Sr). Here, Eu is introduced and replaces at least a portion of M, namely one or more of Ba, Sr, and Ca.

[0025] Similarly, materials It can also be indicated as M is one or more elements selected from the group consisting of barium (Ba), strontium (Sr) and calcium (Ca); in particular, M includes calcium or strontium, or calcium and strontium, more particularly calcium in the compound. Here, Eu is introduced and replaces at least a portion of M (i.e., one or more of Ba, Sr and Ca).

[0026] As those skilled in the art know, the Eu in the above-mentioned luminescent materials is essentially or only in a divalent state.

[0027] Blue luminescent materials may include or similar compounds, or Or similar compounds.

[0028] The term "luminescent material" in this article specifically refers to inorganic luminescent materials.

[0029] The term "phosphor" is also used instead of "luminescent material." These terms are known to those skilled in the art.

[0030] Alternatively or additionally, other luminescent materials may be applied. For example, quantum dots and / or organic dyes may be applied and may optionally be embedded in a transmissive matrix, such as polymers, such as PMMA or polysiloxanes.

[0031] Quantum dots are tiny crystals of semiconductor materials, typically only a few nanometers wide or in diameter. When excited by incident light, the color of the light emitted by a quantum dot is determined by the size and material of the crystal. Therefore, a specific color of light can be produced by adapting the size of the quantum dot. Most known quantum dots that emit in the visible light range are based on cadmium selenide (CdSe) with shells such as cadmium sulfide (CdS) and zinc sulfide (ZnS). Cadmium-free quantum dots such as indium phosphide (InP), copper indium sulfide (CuInS2), and / or silver indium sulfide (AgInS2) can also be used. Quantum dots exhibit very narrow emission bands, thus displaying saturated colors. Furthermore, the emission color can be easily adjusted by adapting the size of the quantum dot. Any type of quantum dot known in the art can be used in this invention. However, for environmental safety and concerns, cadmium-free quantum dots or at least quantum dots with very low cadmium content are preferred.

[0032] Other quantum confinement structures can be used instead of quantum dots, or in addition to quantum dots. In the context of this application, the term "quantum confinement structure" should be understood to mean, for example, quantum wells, quantum dots, quantum rods, tripods, tetrapods, or nanowires.

[0033] Organic phosphors may also be used. Examples of suitable organic phosphor materials are perylene derivative-based organic light-emitting materials, such as compounds sold by BASF under the name Lumogen®. Examples of suitable compounds include, but are not limited to, Lumogen® Red F305, Lumogen® Orange F240, Lumogen® Yellow F083, and Lumogen® F170.

[0034] Different luminescent materials can have different spectral power distributions of their light. Alternatively or additionally, these different luminescent materials can have different color points (or dominant wavelengths).

[0035] As described above, other luminescent materials are also possible. Therefore, in a particular embodiment, the luminescent material is selected from the group consisting of: divalent europium-containing nitrides, divalent europium-containing oxynitrides, divalent europium-containing silicates, cerium-containing garnets, and quantum structures. Quantum structures may, for example, include quantum dots or quantum rods (or other quantum-type particles) (see above). Quantum structures may also include quantum wells. Quantum structures may also include photonic crystals.

[0036] As described above, the light emitter includes a first light-emitting material.

[0037] In embodiments, the first luminescent material may include any of the above-described luminescent materials (and / or another luminescent material). However, in particular, in embodiments, the first luminescent material may include an inorganic crystalline material, such as a polycrystalline material (see also below).

[0038] As mentioned above, the term "luminescent material" can refer to a variety of different luminescent materials. Therefore, in a specific embodiment, the term "luminescent material" can also refer to a composition of luminescent materials.

[0039] Two or more light emitters may comprise the same (first) luminescent material. However, two or more light emitters may also comprise different luminescent materials. However, in certain embodiments, the light emitters may be substantially identical, at least in terms of the luminescent material. Therefore, in embodiments, substantially identical luminescence can be generated under substantially identical irradiation. Thus, in certain embodiments, each light emitter comprises the same first luminescent material.

[0040] The light-emitting element can have a rectangular, circular, hexagonal, or octagonal shape. Specifically, it can be rectangular, such as a square. However, other shapes are also possible, such as rectangles with rounded corners, ellipses, etc. In a particular embodiment, the rectangle can be a square; in other embodiments, it can be a non-square. In some embodiments, all light-emitting elements can have the same shape. In other embodiments, the light-emitting element can include 2-4 different shapes, for example, two different shapes. Specifically, shape refers to the cross-sectional shape perpendicular to the height of the light-emitting element.

[0041] A light source can have a height (H) and an equivalent circular diameter (D'). The equivalent circular diameter (or ECD) (or "circular equivalent diameter") of a (irregularly shaped) two-dimensional shape is the diameter of a circle with an equivalent area. For example, the equivalent circular diameter of a square with side 'a' is... For a circle, its diameter is the same as the diameter of its equivalent circle. Compared to when the diameter of the equivalent circle of this shape is D, a circle with diameter D in the xy plane can be deformed into any other shape (in the xy plane) without changing its area.

[0042] In embodiments, the height can be selected from a range of at least 0.02 mm, such as at least 0.025 mm (25 μm), such as at least 0.03 mm, such as in embodiments, selected from the range of 0.03 mm to 20 mm. Specifically, in embodiments, the height of the light-emitting element can be selected from a range of 0.05 mm to 20 mm, such as 0.05 mm to 10 mm, such as 0.05 mm to 5 mm. Specifically, in embodiments, the height can be selected from a range of 0.05 mm to 1 mm, such as 0.1 mm to 0.5 mm. All light-emitting elements can have the same height, even in certain embodiments, the light-emitting elements can include 2-4 different types of cross-sectional shapes. However, in other embodiments, the light-emitting elements can have different heights, such as 2-4 different heights.

[0043] The light emitter may have edges. In the case of a circular cross-section, the edge comprises a single edge (or a single edge element); in the case of a triangular cross-section, the edge comprises three edges (or three edge elements); and in the case of a rectangular cross-section, the edge comprises four edges (or three edge elements), and so on. The edge is specifically defined by its height.

[0044] The equivalent circular diameter can be selected from the range of 0.2-100, such as 0.2mm-80mm, such as 0.5mm-50mm, such as particularly 1mm-50mm, such as 1mm-40mm in a particular embodiment. In a particular embodiment, also referring to the above, the light emitter can have a width and a length. In embodiments, the width and length can be individually selected from the range of 0.2-100, such as 0.2mm-80mm, such as 0.5mm-50mm, such as particularly 1mm-50mm, such as 1mm-40mm in a particular embodiment. In particular, in embodiments, the equivalent circular diameter can be selected from the range of 0.2mm-50mm, such as particularly 0.5mm-25mm, such as 1mm-20mm in an embodiment. From the above, it can be concluded that even when the light emitter has a width and a length, the light emitter can have an equivalent circular diameter, and this can be characterized.

[0045] In a particular embodiment, the equivalent circular diameter, which can be represented by D', can be greater than the height. Specifically, D' ≥ For example, in certain embodiments, ≤D'≤ Specifically, in the embodiments ≤D'≤ In another specific embodiment, ≤D'≤ As in the embodiments, ≤D'≤ .

[0046] Following some embodiments concerning the matrix, further specific embodiments concerning the light emitter are described below.

[0047] In addition to the light-emitting element, the arrangement also includes a matrix. Specifically, the light-emitting element and the matrix can form an arrangement in which the edge of the light-emitting element can contact the matrix (or matrix material). Thus, the matrix can surround at least a portion of the edge of the light-emitting element, or in certain embodiments, can substantially completely surround the edge of the light-emitting element. Therefore, in embodiments, the matrix (material) can be in physical contact with the edge of the light-emitting element. Thus, in embodiments, the light-emitting element can be configured to be embedded in the matrix (material). In such embodiments, the arrangement can be substantially an arrangement body. However, other embodiments are also possible.

[0048] The substrate may have a substrate height H1. In one embodiment, the substrate height is the same as the height of the light-emitting element. However, in other embodiments, the substrate height may be less than that of the light-emitting element. Therefore, the light-emitting element can protrude from the substrate. In other embodiments, the light-emitting element may have a height smaller than that of the substrate. In such embodiments, the light-emitting element can form a (shallow) cavity, although in other embodiments, the substrate (material) may cover the light-emitting element. Combinations of such embodiments are also possible.

[0049] Therefore, in certain embodiments, the matrix height (H1) is substantially the same as the emitter height (H), i.e., H1 ≈ H (e.g., H1 = H). In such embodiments, light can be emitted from regions at the same height. In other embodiments, H1≤H≤ H1. When the substrate has a higher height, it may be permissible, for example, to cover the light emitter with the substrate (material), which can protect the light emitter. Furthermore, the light from the light emitter can be partially smeared out through the substrate. In other embodiments, H1≤H≤ H1. When the substrate has a lower height, this arrangement can be manufactured more easily. Furthermore, when the height of the light emitter is higher than the substrate, in this embodiment, light can also escape from the light emitter more effectively. However, in other embodiments, H1≤H≤ H1. This can be helpful in handling the arrangement when the substrates have substantially the same height. In particular, the substrates can have substantially the same height across the entire substrate.

[0050] The matrix includes a matrix material. Therefore, "matrix" (in the embodiments) may also be referred to as "matrix material". The matrix material includes a light-transmitting material, wherein the light-transmitting material includes a second light-emitting material. Therefore, the matrix includes a light-transmitting material, wherein the light-transmitting material includes a second light-emitting material.

[0051] The light-transmitting material allows excitation light to be transmitted into its bulk, thereby enabling the excitation of the light-emitting element. Furthermore, the light-transmitting material allows the transmission of light from the second light-emitting material. Light from the first light-emitting material, which can be coupled into the matrix, can also be transmitted through the light-transmitting material.

[0052] In one embodiment, the light-transmitting material may include glass containing luminescent ions. In another embodiment, the light-transmitting material may include glass in which luminescent particles are embedded. The luminescent particles may include the luminescent material described above.

[0053] Examples of glass can be borosilicate glass or phosphate glass. Other glasses are also possible, such as soda-lime glass, germanate glass, fluoride glass, chalcogenide glass, etc. In embodiments, silica glass or fused silica, fused silica, etc., can be used.

[0054] In some embodiments, the light-transmitting material may include an inorganic polymer material containing luminescent ions. In others embodiments, the light-transmitting material may include an inorganic polymer material in which luminescent particles are embedded. For example, the polymer material may include silicates, such as water glass. The luminescent particles may include the luminescent material described above.

[0055] In embodiments, the light-transmitting material may include an organic polymer material having luminescent molecules. In embodiments, the light-transmitting material may include an organic polymer material in which luminescent particles are embedded. The luminescent particles may include the luminescent material as described above. In embodiments, the light-transmitting material may include one or more materials selected from the group consisting of transmissive organic materials, such as those selected from the group consisting of: PE (polyethylene), PP (polypropylene), PEN (polyethylene naphthalate), PC (polycarbonate), polyurethane (PU), polymethyl methacrylate (PMA), polymethyl methacrylate (PMMA) (plexiglass (Plexiglas or Perspex)), polymethacrylamide (PMI), polymethyl methacrylamide (PMMI), styrene-acrylonitrile resin (SAN), cellulose acetate butyrate (CAB), silicone, polyvinyl chloride (PVC), polyethylene terephthalate (PET) (in one embodiment, including (PETG) (ethylene glycol-modified polyethylene terephthalate)), PDMS (polydimethylsiloxane), and COC (cyclic olefin copolymer). Specifically, the light-transmitting material may include aromatic polyesters or copolymers thereof, such as polycarbonate (PC), poly(meth)acrylate (P(M)MA), polyglycolic acid or polyglycolic acid (PGA), polylactic acid (PLA), polycaprolactone (PCL), polyethylene adipate (PEA), polyhydroxyalkanoate (PHA), polyhydroxybutyrate (PHB), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene terephthalate (PTT), and polyethylene naphthalate (PEN). In particular, the light-transmitting material may include polyethylene terephthalate (PET). Therefore, the light-transmitting material is particularly a polymeric light-transmitting material.

[0056] In certain embodiments, other matrix materials, such as quartz or silica, may also be used. Specifically, the matrix comprises a monolithic body in which the light-emitting elements are at least partially embedded. For example, polymeric materials or glass may be disposed in openings between arrays of light-emitting elements arranged at non-zero distances from each other. This can provide a tile-like arrangement of light-emitting elements integrated into a common matrix (material).

[0057] From the above, it can be concluded that, in certain embodiments, the matrix is ​​at least partially defined by a continuous phase, wherein the light emitter is at least partially embedded in the continuous phase. Therefore, in certain embodiments, the continuous phase may comprise an organic polymer material, and / or in embodiments, the continuous phase comprises an inorganic material.

[0058] In a particular embodiment, the matrix may (therefore) be at least partially defined by a continuous phase in which light-emitting particles are embedded, wherein the light-emitting particles include a second light-emitting material, and wherein the light-emitting particles are at least partially embedded in the continuous phase.

[0059] In embodiments, the second luminescent material may include any of the aforementioned luminescent materials (and / or other luminescent materials). In embodiments, the second luminescent material may include a single type of luminescent material. In other embodiments, the second luminescent material includes two or more different luminescent materials. In particular, in embodiments, the second luminescent material may be uniformly distributed on a matrix. For example, luminescent particles may be uniformly distributed in a light-transmitting (matrix) material.

[0060] In one embodiment, the light-emitting particles comprising the second light-emitting material in the matrix may be quantum dots. In other embodiments, the light-emitting particles comprising the second light-emitting material may include polycrystalline phosphor particles. In other embodiments, the light-emitting particles comprising the second light-emitting material may include a small portion of single-crystal phosphors, such as microcrystals. In particular, in one embodiment, the light-emitting particles comprising the second light-emitting material may include inorganic crystalline materials, such as polycrystalline materials. Two or more of such embodiments may also be combined.

[0061] When the matrix material comprises luminescent particles including a second luminescent material, then in embodiments, the particles have a smaller size than the luminescent material, particularly substantially smaller. The particle size (e.g., length, width, height, and (multiple) diameters) can be selected from a range up to about 100 μm, and even more particularly up to about 80 μm, such as a range equal to or less than 50 μm. In embodiments, at least 75% by weight of the luminescent particles have a particle size (e.g., length, width, height, and (multiple) diameters) selected from a range up to about 80 μm. In embodiments, the average particle size number can be equal to or less than 25 μm. In the case of quantum dots, unless quantum dots embedded in other materials are used (as particles), the size can be much smaller. Therefore, (quantum dot) particles can have a size of at least about 2 nm. In particular, in embodiments, the particles can have an average particle size number of at least 2 nm, for example, at least 4 nm.

[0062] Particle size can be determined using methods known in the art, such as one or more of optical microscopy, SEM (scanning electron microscopy), and TEM (transmission electron microscopy). As is known in the art, the size can be average. Therefore, particles can be substantially identical, but they can also differ from one another, for example, two or more subsets of particles, where within a subset the particles are substantially identical. Particles can have a unimodal particle size distribution or a multimodal size distribution.

[0063] As described above, the matrix includes a light-transmitting material. The light-transmitting material may include a luminescent material. For example, in the case of glass containing luminescent ions, the glass can be considered both a light-transmitting material and a luminescent material. As mentioned above, in this document, the first luminescent material and the light-transmitting material are different materials. Therefore, if the luminescent body is of the glass type, it includes another type of glass and / or another luminescent material (rather than the light-transmitting material of the matrix). Therefore, in particular, at least the first luminescent material and the light-transmitting material are different materials.

[0064] Specifically, the light-emitting body includes a ceramic body. Furthermore, specifically, the matrix is ​​not a ceramic body. Note that glass is not considered a ceramic body. As described above, in the embodiments, the matrix may include a glass material or a polymer material (or a combination thereof). Furthermore, as described above, the light-emitting body may include a ceramic body, and the matrix may include a light-transmitting material with embedded particles, such as particles with a size in the range of 2 nm to 100 μm (see above).

[0065] Ceramic bodies are known in the art. In particular, ceramic materials can be obtained by sintering and / or hot pressing processes, optionally followed by annealing in a (slightly) oxidizing atmosphere. The term "ceramic" specifically refers to an inorganic material that can be obtained, in particular, by heating a (polycrystalline) powder at a temperature of at least 500°C, particularly at least 800°C, such as at least 1000°C, such as at least 1400°C, under reduced pressure, atmospheric pressure, or high pressure, such as at 10... -8 The pressure range is up to 500 MPa, such as at least 0.5 MPa, at least 1 MPa, at least 1 to about 500 MPa, such as at least 5 MPa, or at least 10 MPa, especially under uniaxial or isostatic pressure, especially under isostatic pressure. A specific method for obtaining ceramics is hot isostatic pressing (HIP), and the HIP process can be post-sintering HIP, capsule HIP, or combined sintering HIP processes, for example, under the temperature and pressure conditions described above. Ceramics obtained by this method can be used in this way, or can be further processed (e.g., polishing). The density of the ceramic is at least 90% (or higher, see below) of the theoretical density (i.e., the density of a single crystal), such as at least 95%, for example in the range of 97%-100%. The ceramic can still be polycrystalline, but the volume between grains (pressed by particles or agglomerated particles) is reduced or greatly reduced. Heating at elevated pressures, such as HIP, can be performed, for example, in an inert gas, such as one or more of N2 and argon (Ar). Specifically, a sintering process is performed within a temperature range selected from 1400°C to 1900°C (such as 1500°C to 1800°C) prior to heating under high pressure. This sintering can be performed under reduced pressure, such as at 10... -2At pressures of Pa or lower, this sintering may have resulted in a density level of at least 95%, or even more specifically at least 99%, of the theoretical density. After pre-sintering and heating, particularly under elevated pressures such as HIP, the density of the light-transmitting body can approach that of a single crystal. However, the difference lies in the fact that, since the light-transmitting body is polycrystalline, grain boundaries can be obtained within it. These grain boundaries can be detected, for example, by optical microscopy or SEM. Therefore, in this paper, the light-transmitting body specifically refers to a sintered polycrystalline material with a density substantially the same as that of a single crystal (of the same material). Such a bulk can therefore be highly transparent to visible light (except for light-absorbing materials such as Ce, in particular). 3+ (Besides absorption).

[0066] In other embodiments, the light emitter may include a single crystal.

[0067] Some other embodiments will be described below.

[0068] In certain embodiments, the first luminescent material and the second luminescent material are different luminescent materials. Therefore, in these embodiments, when irradiated with light that can be converted into luminescent material light (i.e., "excitation light"), the first and second luminescent materials provide luminescent material light with different spectral power distributions. Specifically, in these embodiments, when irradiated with the same light that can be converted into luminescent material light by both luminescent materials, such as UV and / or blue radiation as in these embodiments, the first and second luminescent materials provide luminescent material light with different spectral power distributions. However, in other embodiments, the first and second luminescent materials may be the same luminescent material.

[0069] When the luminescent materials are the same, an emitted light beam can be provided, which may consist of one or more contributions from different luminescent materials of the luminescent body, and these contributions may all have substantially the same spectral power distribution. In this way, in a particular embodiment, the spatial power distribution can be controllable. When the first and second luminescent materials are different luminescent materials, white light or colored light can be provided, and its spatial and spectral power distributions may be controllable in a particular embodiment. In yet another particular embodiment, the correlated color temperature of the light can be controllable. Note that the term "light" here may refer to luminescent material light and selective light from a light source (see further below when discussing the light generation system).

[0070] In this embodiment, both luminescent materials can be configured to provide luminescent material light with color points in the visible light spectrum. In such an embodiment, the spectral power distribution can be the same or different. Alternatively, the color points can be the same or different (see also above).

[0071] In a particular embodiment, the colors or color points of the first type of light and the second type of light may be different when the corresponding color points of the first type of light and the second type of light differ by at least 0.01 with respect to u' and / or at least 0.01 with respect to v', or even more particularly, by at least 0.02 with respect to u' and / or at least 0.02 with respect to v'. In a more specific embodiment, the corresponding color points of the first type of light and the second type of light may differ by at least 0.03 with respect to u' and / or at least 0.03 with respect to v'. Here, u' and v' are the color coordinates of light in the CIE 1976 UCS (Uniform Chromaticity Scale) diagram.

[0072] In other specific embodiments, the colors or color points of the first type of light and the second type of light can be substantially the same when the corresponding color points of the first type of light and the second type of light differ by a maximum of 0.03 with respect to u' and / or a maximum of 0.03 with respect to v', or even more specifically, a maximum of 0.02 with respect to u' and / or a maximum of 0.02 with respect to v'. In a more specific embodiment, the corresponding color points of the first type of light and the second type of light can differ by a maximum of 0.01 with respect to u' and / or a maximum of 0.01 with respect to v'. Here, u' and v' are the color coordinates of light in the CIE 1976 UCS (Uniform Chromaticity Scale) diagram.

[0073] In a particular embodiment, the centroid wavelengths of at least two spectral power distributions of the device light (in at least two corresponding operating modes) may differ by at least 10 nm, such as at least 20 nm, or even at least 30 nm, such as a difference selected from the range of 30 nm to 200 nm.

[0074] In a particular embodiment, one of the first luminescent material and the second luminescent material is selected from A3B5O. 12 The luminescent material is of the Ce type, wherein A includes one or more of Y, La, Gd, Tb, and Lu, and wherein B includes one or more of Al, Ga, In, and Sc. Other luminescent materials can be other luminescent materials as described above. Garnet-type luminescent materials can be very thermally stable. Specifically, in the embodiments, the first luminescent material is A3B5O. 12 The luminescent material is of the Ce type, wherein A includes one or more of Y, La, Gd, Tb, and Lu, and wherein B includes one or more of Al, Ga, In, and Sc. However, in other embodiments, the first and second luminescent materials are selected from A3B5O. 12 Ce-type luminescent materials, wherein A includes one or more of Y, La, Gd, Tb and Lu, and wherein B includes one or more of Al, Ga, In and Sc.

[0075] Note that the presence of two or more types of luminescent materials is not excluded, each comprising two or more types of luminescent materials. Alternatively or additionally, the second luminescent material may comprise different second luminescent materials, which may optionally be spatially (on the substrate) separated. This may (further) allow control over the spectral power distribution of the light. As mentioned above, note that the term "light" in the embodiments may refer to both the light from the luminescent material and the optional light from the light source (see further below when discussing the light generation system). However, in particular, the second luminescent material may be uniformly distributed on the substrate (material).

[0076] In embodiments, the array includes a plurality of light-emitting elements. At least, the array includes two light-emitting elements, such as at least four. In a particular embodiment, the array may include up to about 1600 light-emitting elements, but more are also possible. Specifically, the light-emitting elements may have an equivalent circular diameter in the range of 0.5 mm to 50 mm, such as particularly 1 mm to 50 mm, such as 1 mm to 40 mm in a particular embodiment (see also above), but smaller or larger dimensions are also possible, such as those selected from the range of 0.2 mm to 50 mm, such as particularly 0.5 mm to 25 mm, for example, 1 mm to 20 mm in an embodiment. Specifically, the array may include up to about 100 light-emitting elements. In embodiments, the array is... The array, wherein n and m are each individually selected from a range of at least 3. In a particular embodiment, n and m are each individually selected from a range of up to about 40. The array can be regular, random, or quasi-random. In particular, in an embodiment, the array of light-emitting elements is a regular 2D array. Therefore, in an embodiment, one or two constant pitches may exist. However, other arrays such as foliate mosaics or sunflower mosaics are also possible.

[0077] In embodiments, at least about 5%, such as particularly at least about 10%, of the cross-sectional area of ​​the arrangement may be defined by the cross-sectional area of ​​the light-emitting element. Furthermore, in embodiments, up to about 90%, such as up to about 80%, of the cross-sectional area of ​​the arrangement may be defined by the cross-sectional area of ​​the light-emitting element. Thus, in a particular embodiment, the light-emitting element has a first total cross-sectional area A1, and the matrix has a second total cross-sectional area A2, where 0.1 ≤ A1 / A2 ≤ 4. Specifically, in embodiments, 0.2 ≤ A1 / A2 ≤ 4, such as 0.5 ≤ A1 / A2 ≤ 4, as in embodiments where 1 ≤ A1 / A2 ≤ 4. Furthermore, specifically, in embodiments, 0.1 ≤ A1 / A2 ≤ 2, such as 0.5 ≤ A1 / A2 ≤ 2, as in particular where 1 ≤ A1 / A2 ≤ 2.

[0078] Furthermore, in a particular embodiment, the cross-sectional area of ​​the light-emitting element defines a circular equivalent diameter D, wherein the shortest distance (d1) between adjacent light-emitting elements is selected from a range ≤d1≤ More specifically, the shortest distance (d1) between adjacent luminescent bodies can be selected from the range ≤d1≤ Such as ≤d1≤ .

[0079] As described above, in this embodiment, the arrangement can be a body. Such a body can be self-supporting. However, this is not necessary. Furthermore, this arrangement is not necessarily a body.

[0080] Therefore, in embodiments, a support member can be used to support the arrangement. The support member can have several properties selected from reflectivity, transmissivity, and thermal conductivity. Given a reflective or transmissive configuration, the former two can be related (see below); the latter can be related from a thermal management perspective. Therefore, in embodiments, the light-emitting arrangement can also include a support member configured to support the light-emitting element and the matrix, wherein in certain embodiments, the support member can be reflective or transmissive to light. Note that the term "light" here can refer to the light from a light source and / or the light from the light-emitting material in embodiments (see further below when discussing the light-generating system).

[0081] Furthermore, the support member can be thermally conductive. Therefore, the support member may include a thermally conductive material. Additionally, in some embodiments, the support member may be a heat sink or fin, or other thermally conductive elements, such as a reflective heat sink or fin. In other embodiments, the support member may be thermally coupled to a heat sink or fin.

[0082] Thermally conductive elements specifically include thermally conductive materials. These materials can, in particular, have a thermal conductivity of at least approximately 20 W / (m²). The thermal conductivity of ) is at least about 30 W / ( ), such as at least about 100W / ( ), such as especially at least about 200W / ( In yet another specific embodiment, the thermally conductive material may specifically have a thermal conductivity of at least about 10 W / ( Thermal conductivity.

[0083] In embodiments, the thermally conductive material may include one or more of the following: copper, aluminum, silver, gold, silicon carbide, aluminum nitride, boron nitride, aluminum silicon carbide, beryllium oxide, silicon carbide composites, aluminum silicon carbide, copper-tungsten alloys, copper molybdenum carbide, carbon, diamond, and graphite. Alternatively or additionally, the thermally conductive material may include or be composed of aluminum oxide.

[0084] Thermally conductive elements may include heat sinks.

[0085] Heat sinks are known in the art. The term "heat sink" (or radiator) can specifically refer to a passive heat exchanger that transfers heat generated by a device such as electronic or mechanical equipment to a fluid (cooling) medium (typically air or a liquid coolant). Thus, heat is dissipated (at least partially) from the device. Heat sinks are designed, in particular, to maximize their surface area in contact with the surrounding fluid cooling medium. Therefore, in particular, a heat sink may include multiple fins. For example, a heat sink may be a body with multiple extended fins.

[0086] Heat sinks specifically include thermally conductive materials (more specifically, they are composed of thermally conductive materials).

[0087] The term "radiator" can also refer to multiple (different) radiators.

[0088] A heat sink can be configured to transfer energy as heat from a first element to a second element. The second element may, in particular, be a radiator or heat exchanger. The heat sink can be passive or active. Embodiments of passive heat sinks may include plates or blocks of materials with high thermal conductivity, such as copper, aluminum, or diamond. Active heat sinks can be configured to accelerate heat transfer by consuming energy as work provided by an external source. Here, the heat sink may be, in particular, a passive heat sink. Alternatively or additionally, the heat sink may be an active heat sink, such as one comprising a group of self-heating pipes and a vapor chamber.

[0089] The light-emitting arrangement can be used in combination with one or more light sources. Therefore, in another aspect, the present invention provides a light-generating system comprising one or more light sources and a light-emitting arrangement according to any one of the preceding claims, wherein the one or more light sources are configured to generate one or more beams of light, and wherein the light-emitting arrangement is configured to be in a light-receiving relationship with the one or more light sources.

[0090] The term "light source" can, in principle, refer to any light source known in the art. It can be a conventional (tungsten) bulb, a low-pressure mercury lamp, a high-pressure mercury lamp, a fluorescent lamp, or an LED (light-emitting diode). In specific embodiments, the light source includes solid-state LED light sources (e.g., LEDs or laser diodes (or "diode lasers")). The term "light source" can also refer to multiple light sources, such as 2-200 (solid-state) LED light sources. Therefore, the term LED can also refer to multiple LEDs. Furthermore, the term "light source" in embodiments can also refer to so-called chip-on-board (COB) light sources. The term "COB" specifically refers to LED chips in the form of semiconductor chips that are neither packaged nor connected, but directly mounted onto a substrate (such as a PCB). Therefore, multiple light semiconductor light sources can be configured on the same substrate. In embodiments, a COB is a multi-LED chip configured together as a single lighting module.

[0091] A light source has a light-escape surface. Referring to conventional light sources such as light bulbs or fluorescent lamps, its outer surface can be a glass or quartz shell. For example, for an LED, it can be the LED die, or, when resin is applied to the LED die, it can be the outer surface of the resin. In principle, it can also be the end of an optical fiber. The term "escape surface" specifically refers to this part of the light source, that is, the place where light actually leaves the light source or escapes from it. The light source is configured to provide a beam of light. This beam of light (and therefore) escapes from the light-escape surface of the light source.

[0092] The term "light source" can refer to semiconductor light-emitting devices, such as light-emitting diodes (LEDs), resonant cavity light-emitting diodes (RCLEDs), vertical cavity laser diodes (VCSELs), edge-emitting lasers, etc. The term "light source" can also refer to organic light-emitting diodes, such as passive matrix (PMOLED) or active matrix (AMOLED). In certain embodiments, the light source includes solid-state light sources (e.g., LEDs or laser diodes). In one embodiment, the light source includes an LED (light-emitting diode). The term "light source" or "solid-state light source" can also refer to superluminescent diodes (SLEDs).

[0093] The term LED can also refer to multiple LEDs. Furthermore, the term "light source" in the embodiments can also refer to a so-called chip-on-board (COB) light source. The term "COB" specifically refers to an LED chip in the form of a semiconductor chip that is neither packaged nor connected, but directly mounted onto a substrate (such as a PCB). Therefore, multiple semiconductor light sources can be configured on the same substrate. In the embodiments, a COB is a multi-LED chip configured together as a single lighting module.

[0094] The term "light source" can also refer to multiple (substantially identical (or different)) light sources, such as 2-2000 solid-state light sources. In embodiments, a light source may include one or more micro-optical elements (microlens arrays) downstream of a single solid-state light source (such as an LED) or downstream of multiple solid-state light sources (i.e., shared by multiple LEDs). In embodiments, a light source may include an LED with on-chip optics. In embodiments, a light source includes pixelated individual LEDs (with or without optics) (providing on-chip beam control in embodiments).

[0095] In embodiments, the light source can be configured to provide primary radiation, which is used, for example, as a blue light source, such as a blue LED, or a green light source, such as a green LED, and a red light source, such as a red LED. Such LEDs, which may not include a luminescent material (“phosphor”), can be designated as direct-color LEDs.

[0096] However, in other embodiments, the light source can be configured to provide primary radiation, and a portion of the primary radiation is converted into secondary radiation. The secondary radiation can be based on the conversion of the luminescent material. Therefore, secondary radiation can also be indicated as luminescent material radiation. In embodiments, the luminescent material can be included by the light source, such as an LED having a luminescent material layer or dome comprising the luminescent material. Such an LED can be indicated as a phosphor-converted LED or a PC LED. In other embodiments, the luminescent material can be positioned at a distance (“remote”) from the light source, such as an LED having a luminescent material layer that is not in physical contact with the LED die. Therefore, in certain embodiments, the light source can be a source that emits light with wavelengths selected from the range 380 nm–470 nm during operation. However, other wavelengths are also possible. This light can be partially utilized by the luminescent material.

[0097] In some embodiments, the light generating device may include a light-emitting material. In other embodiments, the light generating device may include a PCLED. In still other embodiments, the light generating device may include a direct LED (i.e., without a phosphor). In some embodiments, the light generating device may include a laser device, such as a laser diode. In some embodiments, the light generating device may include a superluminescent diode. Therefore, in certain embodiments, the light source may be selected from the group consisting of laser diodes and superluminescent diodes. In other embodiments, the light source may include an LED.

[0098] The term "laser source" specifically refers to a laser. Such a laser can be specifically configured to generate laser light having one or more wavelengths in the UV, visible, or infrared range, particularly wavelengths selected from the spectral wavelength range of 200 nm to 2000 nm, such as 300 nm to 1500 nm. The term "laser" also specifically refers to a device that emits light through an optical amplification process based on stimulated emission of electromagnetic radiation.

[0099] Specifically, in embodiments, the term "laser" may refer to a solid-state laser. In certain embodiments, the term "laser" or "laser source" or similar terms refer to a laser diode (or diode laser).

[0100] Therefore, in the embodiments, the light source includes a laser light source. In the embodiments, the term "laser" or "solid-state laser" may refer to one or more of the following: cerium-doped lithium aluminum strontium fluoride (or calcium) fluoride (Ce:LiSAF, Ce:LiCAF), chromium-doped chrysoberyl (alexandrite) laser, chromium ZnSe (Cr:ZnSe) laser, divalent samarium-doped calcium fluoride (Sm:CaF2) laser, Er:YAG laser, and erbium-doped and erbium-doped ytterbium-doped glass lasers. Lasers, F-Center lasers, holmium YAG (Ho:YAG) lasers, Nd:YAG lasers, NdCrYAG lasers, neodymium-doped calcium yttrium oxyborate Nd:YCa4O(BO3)3 or Nd:YCOB, neodymium-doped yttrium orthovanadate (Nd:YVO4) lasers, neodymium glass (Nd:glass) lasers, neodymium YLF (Nd:YLF) solid-state lasers, promethium-doped 147 phosphate glass (147Pm) 3+ Solid-state lasers (Al2O3:Cr) and ruby ​​lasers (Al2O3:Cr) 3+ Titanium YAG (Tm:YAG) lasers, Titanium Sapphire (Ti:Sapphire; Al2O3:Ti) lasers 3+ Lasers include trivalent uranium-doped calcium fluoride (U:CaF2) solid-state lasers, ytterbium-doped glass lasers (rods, plates / chips and fibers), ytterbium YAG (Yb:YAG) lasers, and Yb2O3 (glass or ceramic) lasers.

[0101] In the embodiments, the term "laser" or "solid-state laser" may refer to one or more semiconductor laser diodes, such as GaN, InGaN, AlGaInP, AlGaAs, InGaAsP, lead salt, vertical-cavity surface-emitting laser (VCSEL), quantum cascade laser, hybrid silicon laser, etc.

[0102] Lasers can be combined with up-converters to achieve shorter wavelengths. For example, upconversion can be achieved using some (trivalent) rare-earth ions, or using nonlinear crystals. Alternatively, lasers can be combined with down-converters (e.g., dye lasers) to achieve longer wavelengths.

[0103] As can be seen from the following, the term "laser source" can also refer to multiple (different or identical) laser sources. In a particular embodiment, the term "laser source" can refer to N (identical) laser sources. In an embodiment, N=2 or greater. In a particular embodiment, N can be at least 5, such as particularly at least 8. In this way, higher brightness can be obtained. In an embodiment, the laser sources can be arranged as a laser array (see also above). The laser array in an embodiment may include heat dissipation and / or optics, such as lenses for collimating the laser.

[0104] The laser source is configured to generate laser light (or "laser"). The light source can consist essentially of laser light. It can also include laser light from two or more (different or identical) laser sources. For example, laser light from two or more (different or identical) laser sources can be coupled into a light guide to provide a single beam of light comprising two or more (different or identical) laser sources. In a particular embodiment, the light source is therefore specifically collimated light. In yet another embodiment, the light source is specifically (collimated) laser light.

[0105] The phrase "different light sources" or "multiple different light sources" and similar phrases in the embodiments may refer to multiple solid-state light sources selected from at least two different bins. Similarly, the phrase "same light source" or "multiple same light sources" and similar phrases in the embodiments may refer to multiple solid-state light sources selected from the same bin.

[0106] The light source is specifically configured to generate light with an optical axis (O) (beam shape) and a spectral power distribution. In embodiments, the light source light may include one or more frequency bands having bandwidths known to the laser. In particular embodiments, the frequency bands may be relatively sharp lines, such as having a full width at half maximum (FWHM) in the range of less than 20 nm at RT, such as equal to or less than 10 nm. Thus, the light source light has a spectral power distribution (intensity on an energy scale according to wavelength), which may include one or more (narrow) frequency bands.

[0107] The beam of light (from the source) can be a focused or collimated beam of light from the (laser) source. The term "focused" can specifically refer to converging to a small spot. This small spot can be located at the discrete converter region, or (slightly) upstream or (slightly) downstream of it. In particular, focusing and / or collimation can be performed such that the cross-sectional shape of the beam (perpendicular to the optical axis) at the discrete converter region (on the side) is substantially no larger than the cross-sectional shape of the discrete converter region (perpendicular to the optical axis) (where the source light illuminates the discrete converter region). Focusing can be performed using one or more optical devices, such as (focusing) lenses. In particular, two lenses can be applied to focus the laser source light. Collimation can be performed using one or more (other) optical devices, such as collimating elements, such as lenses and / or parabolic mirrors. In embodiments, the beam of light from the (laser) source can be relatively highly collimated, such as ≤2° (FWHM) in embodiments, more particularly ≤1° (FWHM), and most particularly ≤0.5° (FWHM). Therefore, ≤2° (FWHM) can be considered as (highly) collimated source light. Optical devices can be used to provide (high) collimation (see also above).

[0108] In a particular embodiment, the light generation system may include multiple different light sources, such as two or more subsets of light sources, each subset including one or more light sources configured to generate light with substantially the same spectral power distribution, but wherein different subsets of light sources are configured to generate light with different spectral distributions. In such an embodiment, the control system may be configured to control multiple light sources. In a particular embodiment, the control system may individually control subsets of light sources.

[0109] The terms “upstream” and “downstream” refer to the arrangement of items or features relative to the propagation of light from the light generating component (here, in particular, the first light source), wherein a second position in the beam closer to the light generating component is “upstream” relative to a first position in the beam from the light generating component, and a third position in the beam further away from the light generating component is “downstream”.

[0110] The terms "radiative coupling" or "optical coupling" can specifically refer to (i) a light-generating element, such as a light source, and (ii) another item or material associated with each other such that at least a portion of the radiation emitted by the light-generating element is received by the item or material. In other words, the item or material is configured to be in a light-receiving relationship with the light-generating element. At least a portion of the radiation from the light-generating element will be received by the item or material. In embodiments, this can be direct, such as an item or material in physical contact with the light-emitting surface of the light-generating element. In embodiments, this can be via a medium, such as air, gas, or a liquid or solid light-guiding material. In embodiments, one or more optical devices, such as lenses, reflectors, or filters, can also be configured in the optical path between the light-generating element and the item or material. As mentioned above, the term "in a light-receiving relationship" does not exclude the presence of intermediate optical elements, such as lenses, collimators, reflectors, dichroic mirrors, etc. In embodiments, the terms "light-receiving relationship" and "downstream" can be essentially synonymous.

[0111] Specifically, in some embodiments, the light sources include laser light sources. Furthermore, in certain embodiments, the system includes multiple light sources configured as an array.

[0112] The luminescent material is configured to convert at least a portion of the light from the light source into luminescent material light. In an embodiment, the light generation system includes a plurality of light sources, wherein a first subset of one or more light sources is configured to generate first light source light, and a second subset of one or more light sources is configured to generate second light source light, wherein the spectral power distributions of the first light source light and the second light source light are different, and wherein the first luminescent material can convert at least a portion of the first light source light into first luminescent material light, and optionally convert some of the second light source light into first luminescent material light, and wherein the second luminescent material is configured to convert at least a portion of the second light source light into first luminescent material light, and optionally convert a portion of the first light source light into second luminescent material light. Therefore, in a particular embodiment, the spectral power distribution of the light source light can be controllable.

[0113] However, in other embodiments, substantially all of one or more light sources are configured to generate light with substantially the same spectral power distribution, such as LEDs or diodes in the same range.

[0114] In the following text, the light generation system is usually explained in terms of the light source, regardless of whether the spectral power distribution of the light source is controllable.

[0115] Therefore, as described above, the present invention also provides a light generation system comprising one or more light sources and a light-emitting arrangement as defined herein, wherein the one or more light sources are configured to generate one or more beams of light from the light source, wherein the light-emitting arrangement is configured to be in a light-receiving relationship with the one or more light sources, and wherein a first light-emitting material and a second light-emitting material are configured to convert at least a portion of the light from the light source received by the first light-emitting material and the second light-emitting material into light from the first light-emitting material and the second light-emitting material, respectively.

[0116] The phrase "the first luminescent material and the second luminescent material are configured to convert at least a portion of the light from the source received by the first luminescent material and the second luminescent material into light from the first luminescent material and light from the second luminescent material, respectively" can specifically indicate that (a) when the first luminescent material receives light from the source, the first luminescent material can specifically convert at least a portion of the light from the source into light from the first luminescent material, and (b) when the second luminescent material receives light from the source, the second luminescent material can specifically convert at least a portion of the light from the source into light from the second luminescent material. However, in embodiments, in the operating mode, only the first luminescent material or only the second luminescent material can receive light from the source.

[0117] Typically, the spatial power distribution of the light from the light source can be controllable. In embodiments, this can be achieved based on one or more of the following options: (i) the light generation system includes multiple light sources, such as a light source array, wherein the light sources are individually controllable, and (ii) the light generation system includes controllable optics.

[0118] Using controllable light sources, the spatial power distribution of light from multiple light sources can be controlled. Therefore, in embodiments, the control system can be configured to control multiple light sources. Using optical devices, the spatial power distribution of light from multiple light sources can be controlled, for example, when the focus is controllable or when the focusing range is controllable. Examples of such optical devices are movable optical devices, liquid crystal-based lenses, or electrowetting-based lenses. In embodiments, movable or scanning mirrors can be used as controllable optical devices. In other embodiments, controllable optical devices may include liquid crystal-based diffusers. In embodiments, the optical devices may have a controllable focal length. In other embodiments, the optical devices may include micromirror devices. Micromirror devices may be particularly based on microscopically small mirrors. Micromirror devices may be particularly microelectromechanical systems (MEMS). The term "optical device" can refer to one or more optical elements, such as one or more lenses and / or one or more mirrors.

[0119] In a particular embodiment, the system includes multiple light sources, two or more of which, optionally combined with optics, can be configured to provide light to only a single (corresponding) light source. Thus, a collection of light sources and light sources can exist, where a corresponding light source is substantially radiatively coupled only to its corresponding light source. In this way, for example, the emission of a particular light source can be turned on or off. Specifically, in an embodiment, the system may include a collection of k1 light sources and light sources (and optional optics), where the light sources are configured to illuminate a particular light source in an operating mode. Specifically, in an embodiment, k1 ≥ 2, such as k1 ≥ 4. Therefore, in a particular embodiment, the system includes multiple light sources configured as an array. In a particular embodiment, the array of light sources and the array of light sources have substantially the same symmetry.

[0120] One or more light beams can be generated using optics and / or multiple light sources. When multiple light beams are controlled, the spatial power distribution can be controlled, and / or when the optics are controlled, the spatial power distribution of one or more light beams can be (and can also be controlled). Therefore, in embodiments, the control system can be configured to control the optics. Thus, in a particular embodiment, one or more light beams can have a spatial power distribution relative to the light-emitting arrangement, wherein the spatial power distribution is controllable, wherein the light generation system further includes a control system configured to control one or more of: (i) one or more light sources, and (ii) the spatial power distribution of one or more light beams of one or more light sources relative to the light-emitting arrangement.

[0121] Specifically, in one embodiment, one or more light sources are selected from the group consisting of LEDs, laser diodes, and superluminescent diodes. In another embodiment, one or more light sources are selected from the group consisting of LEDs. In yet another embodiment, one or more light sources are selected from the group consisting of laser diodes. In yet another embodiment, one or more light sources are selected from the group consisting of superluminescent diodes. In a particular embodiment, when multiple light sources are present, the light sources are selected from the same range.

[0122] As described above, in the embodiments, the spatial distribution of the (multiple) light beams can be controlled. In this way, only one or more light emitters, or light emitters and a matrix, or essentially only the matrix, can be addressed. In this way, the spatial distribution of the (multiple) light-emitting beams and / or the spectral power distribution of the emitted light can be controlled. Furthermore, since the light emanating from this arrangement can be a combination of light emitted from one or more light-emitting materials and light from a source, the spectral power distribution of the system light can also be controlled in the embodiments. System light is the light emitted from the light-generating system during system operation. In the operating mode, system light can include light from one or more light-emitting materials, specifically a first light-emitting material and a second light-emitting material, and optionally light from one or more source lights. In a particular embodiment, the control system can be configured to control the spectral power distribution of the system light.

[0123] In a particular embodiment, the system light may be visible light. However, in one or more embodiments of the operating mode, the system light may be white light. In a particular embodiment, the control system may be configured to control one or more of the color point and color temperature of the system light.

[0124] In one embodiment, during operation, the light generation system can be configured to illuminate the light emitter with at least 80% of the light source and the matrix with up to 20% of the light source. In a particular embodiment, during operation, the light generation system can be configured to illuminate the light emitter with at least 90% of the light source and the matrix with up to 10% of the light source. In such embodiments, essentially only light from the first luminescent material can be generated.

[0125] In other embodiments, during operation, the light generation system can be configured to illuminate the light emitter with up to 20% of the light source and the matrix with at least 80% of the light source. In certain other embodiments, during operation, the light generation system can be configured to illuminate the light emitter with up to 10% of the light source and the matrix with at least 90% of the light source. In such embodiments, essentially only light from the second luminescent material can be generated.

[0126] Therefore, in yet another embodiment, during operation, the light generation system can be configured to illuminate the light emitter with x% of the light source and the matrix with 100-x% of the light source. Here, x can vary between 0 and 100, such as in the range of 30-70, or in the range of 20-80, or in the range of 0-10, or in the range of 90-100. However, other ranges are also possible.

[0127] The arrangement can be configured relative to a light source in a reflective mode. However, in other embodiments, the arrangement can be configured relative to a light source in a transmissive mode.

[0128] In the reflection mode, optionally, one or more dichroic beam splitters may be applied. In embodiments, such optics may be used to reflect light from the luminescent material and transmit light from the source, or to reflect light from the source and transmit light from the luminescent material.

[0129] In transmission mode, mixing the light from the source with the light from the luminescent material is relatively easy, which can help generate the desired spectral power distribution. In reflection mode, thermal management is easier because most of the luminescent material can be in thermal contact with a heat-conducting element such as a heat sink or fin. In reflection mode, a portion of the light from the source can be reflected by the luminescent material and / or a reflector in the embodiments, and can be mixed with the light from the luminescent material. The reflector can be configured downstream of the luminescent material (in reflection mode).

[0130] The term "white light" used herein is known to those skilled in the art. It specifically refers to light having a correlated color temperature (CCT) between approximately 1800K and 20000K, such as between 2000 and 20000K, particularly between 2700 and 20000K, for general illumination, especially in the range of approximately 2700K to 6500K. In embodiments, for backlighting purposes, the correlated color temperature (CCT) can particularly be in the range of approximately 7000K to 20000K. Furthermore, in embodiments, the correlated color temperature (CCT) is particularly within approximately 15 SDCM (standard deviation of color matching) from the BBL (blackbody track), particularly within approximately 10 SDCM from the BBL, and even more particularly within approximately 5 SDCM from the BBL.

[0131] The terms “visible,” “visible light,” or “visible light emission,” and similar terms refer to light having one or more wavelengths in the range of about 380 nm to 780 nm. Here, UV may specifically refer to wavelengths selected from the range of 200 nm to 380 nm.

[0132] The terms “light” and “radiation” are used interchangeably herein unless the context clearly indicates that the term “light” refers only to visible light. Therefore, the terms “light” and “radiation” can refer to UV radiation, visible light, and IR radiation. In certain embodiments, particularly for lighting applications, the terms “light” and “radiation” refer to (at least) visible light.

[0133] The term "violet light" or "violet emission" specifically refers to light with wavelengths in the range of approximately 380 nm to 440 nm. The term "blue light" or "blue emission" specifically refers to light with wavelengths in the range of approximately 440 nm to 495 nm (including some violet and cyan hues). The term "green light" or "green emission" specifically refers to light with wavelengths in the range of approximately 495 nm to 570 nm. The term "yellow light" or "yellow emission" specifically refers to light with wavelengths in the range of approximately 570 nm to 590 nm. The term "orange light" or "orange emission" specifically refers to light with wavelengths in the range of approximately 590 nm to 620 nm. The term "red light" or "red emission" specifically refers to light with wavelengths in the range of approximately 620 nm to 780 nm. The term "pink light" or "pink emission" refers to light with both blue and red components. The term "cyan" can refer to one or more wavelengths selected from the range of approximately 490 nm to 520 nm. The term "amber" can refer to one or more wavelengths selected from the range of approximately 585nm-605nm, such as approximately 590nm-600nm.

[0134] The term "control" and similar terms specifically refer at least to determining the behavior of an element or supervising its operation. Therefore, "control" and similar terms as used herein can refer to imposing behavior on an element (determining the behavior of the element or supervising its operation), such as measuring, displaying, actuating, turning on, moving, changing temperature, etc. In addition, the term "control" and similar terms can also include monitoring. Therefore, the term "control" and similar terms can include imposing behavior on an element, or imposing behavior on an element and monitoring the element. Control of an element can be accomplished through a control system, which can also be referred to as a "controller." The control system and the element can therefore be functionally coupled, at least temporarily or permanently. The element can include a control system. In embodiments, the control system and the element may not be physically coupled. Control can be accomplished via wired and / or wireless control. The term "control system" can also refer to multiple different control systems, which are particularly functionally coupled, and wherein, for example, one control system can be a master control system, and one or more other control systems can be slave control systems. The control system can include or can be functionally coupled to a user interface.

[0135] The control system can also be configured to receive and execute commands from a remote control. In embodiments, the control system can be controlled via an application on the device, such as a portable device like an iPhone or other types of smartphones, tablets, etc. Therefore, the device is not necessarily coupled to the lighting system, but can be (temporarily) functionally coupled to it.

[0136] Therefore, in embodiments, the control system can (and may also) be configured to be controlled by an application on a remote device. In such embodiments, the control system of the lighting system can be a control system in either a slave or slave mode. For example, the lighting system can be identified by a code, specifically a unique code for the corresponding lighting system. The control system of the lighting system can be configured to be controlled by an external control system that can access the lighting system based on knowledge of the (unique) code (input via a user interface with optical sensors, such as a QR code reader). The lighting system may also include components for communicating with other systems or devices, such as those based on Bluetooth, Wi-Fi, LiFi, ZigBee, BLE, or WiMAX or other wireless technologies.

[0137] The system, apparatus, or device can perform actions in a "mode" or "operation mode," or "operational mode," or "running mode." Similarly, in a method, an action, stage, or step can be performed in a "mode" or "operation mode," or "operational mode," or "running mode." This does not preclude the system, apparatus, or device from being adapted to provide another control mode or multiple other control modes. Likewise, this does not preclude the possibility of performing one or more other modes before and / or after performing a particular mode.

[0138] However, in embodiments, the control system may be available and is adapted to provide at least a control mode. If other modes are available, the selection of such modes can be performed specifically via a user interface, although other options are also possible, such as performing modes based on sensor signals or a (time) scheme. In embodiments, an operating mode may also refer to a system, apparatus, or device that can only operate in a single operating mode (i.e., "on," without further tunability).

[0139] Therefore, in this embodiment, the control system can be controlled based on one or more of the following: input signals from the user interface, sensor signals (from sensors), and timers. The term "timer" can refer to a clock and / or a predetermined timing scheme.

[0140] Specifically, the control system can be configured to control multiple light sources (included in the system). In an embodiment, the light sources can be configured to generate light with substantially the same spectral power distribution. Furthermore, in an embodiment, the control system can be configured to control optics that can be used to shape the light beams from the multiple light sources.

[0141] Multiple light beams (from different light sources) can form a single light beam.

[0142] In an embodiment, the control system can be configured to control the spectral power distribution of the system light. Specifically, the system light may (in one or more operating modes) include one or more of a first luminescent material light and a second luminescent material light.

[0143] A light generating system may be part of, or be applied to, for example, the following: office lighting systems, home application systems, shop lighting systems, residential lighting systems, accent lighting systems, spotlight systems, theater lighting systems, fiber optic application systems, projection systems, self-emissive display systems, pixelated display systems, segmented display systems, warning sign systems, medical lighting application systems, signage systems, decorative lighting systems, portable systems, automotive applications, (outdoor) road lighting systems, urban lighting systems, greenhouse lighting systems, horticultural lighting, digital projection, or LCD backlighting. A light generating system (or illuminator) may be part of, for example, an optical communication system or a disinfection system, or may be applied to, for example, an optical communication system or a disinfection system.

[0144] In another aspect, the invention also provides a lamp or illuminator that includes a light generating system as defined herein. The illuminator may also include a housing, optical elements, blinds, etc. The lamp or illuminator may also include a enclosure surrounding the light generating system. The lamp or illuminator may include a light window or opening in the housing through which system light can escape from the housing. In yet another aspect, the invention also provides a projection device that includes a light generating system as defined herein. In particular, a projection device or “projector” or “image projector” can be an optical device that projects an image (or moving image) onto a surface, such as a projection screen. The projection device may include one or more light generating systems, such as those described herein. Therefore, in one aspect, the invention also provides a light generating device selected from the group consisting of lamps, illuminators, projection devices, disinfection devices, and optical wireless communication devices that includes a light generating system as defined herein. In embodiments, the light generating system or lamp may include a (dynamic) spotlight.

[0145] A light generating device may include a housing or carrier configured to house or support one or more components of a light generating system. For example, in an embodiment, the light generating device may include a housing or carrier configured to house or support one or more arrangements and one or more light sources, optionally one or more optics, etc.

[0146] The term UV radiation may refer to near-UV radiation (NUV) in a particular embodiment. Therefore, the term "(N)UV" is also used herein, generally referring to UV and in a particular embodiment to NUV. The term IR radiation may refer to near-IR radiation (NIR) in a particular embodiment. Therefore, the term "(N)IR" is also used herein, generally referring to IR and in a particular embodiment to NIR.

[0147] In this document, UV (ultraviolet light) may specifically refer to wavelengths selected from the range of 190 nm to 380 nm, although other wavelengths may be possible in certain embodiments.

[0148] In this document, IR (infrared) may specifically refer to radiation with wavelengths selected from the range of 780 nm to 3000 nm, such as 780 nm to 2000 nm, for example wavelengths up to about 1500 nm, such as wavelengths of at least 900 nm. Therefore, the term IR in this document may refer to one or more of near-infrared (NIR (or IR-A)) and short-wavelength infrared (SWIR (or IR-B)), especially NIR. Attached Figure Description

[0149] Embodiments of the invention will now be described by way of example only with reference to the accompanying drawings, in which corresponding reference numerals indicate corresponding parts, and in the drawings:

[0150] Figures 1a-1f schematically illustrate some aspects and embodiments; and

[0151] Figure 2 Some applications are illustrated schematically. The illustrations are not necessarily drawn to scale. Detailed Implementation

[0152] Figure 1a schematically illustrates a light-emitting arrangement 2000, which includes an array 2005 of light-emitting elements 2100 and a matrix 2210 at least partially disposed between the light-emitting elements 2100.

[0153] The light-emitting body 2100 includes a first light-emitting material 2110. The matrix 2210 includes a light-transmitting material 2215. The light-transmitting material 2215 includes a second light-emitting material 2220.

[0154] Specifically, the first luminescent material 2110 and the light-transmitting material 2215 are different materials.

[0155] Furthermore, in this embodiment, the light emitter 2100 comprises a ceramic body.

[0156] In one embodiment, the matrix 2210 may be at least partially defined by a continuous phase 2230 in which light-emitting particles 2240 are embedded. In another embodiment, the light-emitting particles 2240 may include a second light-emitting material 2220.

[0157] Specifically, in an embodiment, the light emitter 2100 may be at least partially embedded in the continuous phase 2230. In an embodiment, the continuous phase 2230 comprises an organic polymer material. Alternatively or additionally, in an embodiment, the continuous phase 2230 comprises an inorganic material. However, other embodiments are also possible.

[0158] In a particular embodiment, the first luminescent material 2110 and the second luminescent material 2220 are different luminescent materials. In other particular embodiments, the first luminescent material 2110 and the second luminescent material 2220 are the same luminescent material.

[0159] Specifically, in the embodiments, the first luminescent material 2110 and / or the second luminescent material 2220, particularly at least the first luminescent material 2110, are selected from A3B5O. 12 Ce-type luminescent materials, wherein A includes one or more of Y, La, Gd, Tb and Lu, and wherein B includes one or more of Al, Ga, In and Sc.

[0160] In this embodiment, the array 2105 of the light emitters 2100 is a regular 2D array. Therefore, as schematically shown, the array 2105 has equal pitch in one direction or equal pitch in two directions.

[0161] In a particular embodiment, the light emitter 2100 may have a first total cross-sectional area A1, and the matrix 2210 may have a second total cross-sectional area A2, wherein 0.1≤A1 / A2≤4.

[0162] Specifically, in the embodiments, the cross-sectional area of ​​the light-emitting element 2100 defines a circular equivalent diameter D, wherein the shortest distance dl between adjacent light-emitting elements 2100 is selected from the range ≤dl≤ .

[0163] The luminescent body in Figure 1a has a length L1 and a width W1 to define the cross-sectional area A1. The shortest distance d1 is also represented by L2 and W2, which are the shortest distances in the length and width directions, respectively.

[0164] Figure 1b schematically illustrates several embodiments. In embodiments I and V, the heights of the light emitter 2100 and the substrate 2210 are substantially the same. In embodiments II and IV, the height of the light emitter 2100 is less than the height of the substrate 2210. In embodiment IV, the substrate 2210 even surrounds the light emitter 2100. In embodiment III, the height of (multiple) light emitters 2100 is greater than the height of the substrate 2210. The height of the light emitter 2100 is denoted by H, and the height of the substrate 2210 is denoted by H1.

[0165] Figure 1b also schematically illustrates one embodiment of a light-emitting arrangement 2000, which further includes a support member 400 configured to support the light-emitting element 2100 and the substrate 2210. In this embodiment, the support member 400 may be reflective or transmissive to light.

[0166] In the embodiment of Figure 1b, the support 400 can be particularly reflective. The reflection mode is shown in Embodiment I of Figure 1b.

[0167] Reference numeral 300 schematically illustrates a control system that can be configured to control one or more light sources 10 and / or optical devices 450 (see also below).

[0168] Therefore, FIG1b also schematically illustrates an embodiment of a light generation system 1000 including one or more light sources 10 and a light-emitting arrangement 2000, as described herein.

[0169] One or more light sources 10 are specifically configured to generate one or more beams 12 of light source light 11.

[0170] In an embodiment, one or more light sources 10 may be selected from the group consisting of LEDs, laser diodes, and superluminescent diodes. Specifically, in an embodiment, one or more light sources 10 may include laser diodes.

[0171] As schematically shown, the light-emitting arrangement 2000 is configured to be in a light-receiving relationship with one or more light sources 10.

[0172] Specifically, the first luminescent material 2110 and the second luminescent material 2220 are configured to convert at least a portion of the light source light 11 received by the first luminescent material 2110 and the second luminescent material 2220 into first luminescent material light 2111 and second luminescent material light 2221, respectively.

[0173] Reference numeral 450 refers to an optical device, which may be particularly controllable. As described above, in one embodiment, a moving or scanning mirror may be used as a controllable optical device. In other embodiments, the controllable optical device may include a liquid crystal-based diffuser. In one embodiment, the optical device may have a controllable focal length. In other embodiments, the optical device may include a micromirror device. The micromirror device may be particularly based on a microscopically small mirror. The micromirror device may particularly be a microelectromechanical system (MEMS). The term "optical device" may refer to one or more optical elements, such as one or more lenses and / or one or more mirrors, etc. Therefore, the optical device may be controllable, such as by control system 300.

[0174] Other optical devices besides those shown can be used, such as (polarizing) beam splitters, dichroic beam splitters, half-reflectors, mirrors, etc.

[0175] Here, the optics 450 are shown very schematically. Furthermore, the system is schematically shown in reflection mode. However, transmission mode is also possible.

[0176] In the reflection mode, optionally, one or more dichroic beam splitters (not shown) may be applied. In embodiments, such optics may be used to reflect light from the luminescent material and transmit light from the source, or to reflect light from the source and transmit light from the luminescent material.

[0177] Reference numeral 1001 refers to system light that can escape from the system. In operating mode, system light 1001 may include one or more of (a1) first luminescent material light 2111 and (a2) second luminescent material light 2221, and optionally may also include light source light 11. For example, by providing light selection (or the intensity of light 11 of the corresponding light source 10) through optics and / or light source 10, the spectral power distribution of system light 1001 may be controllable.

[0178] Examples VI-IX (and Example I) schematically illustrate a non-limiting number of embodiments in which different portions of the arrangement can be illuminated by the light source 11.

[0179] Embodiment VI illustrates a light source whose light beam 12 can be controlled by optics 450, which are controllable. These optics may, for example, have a controllable focal point (in the depth direction) and / or be laterally movable.

[0180] Embodiment VII illustrates an array of light source 10, optionally, and optics 450. These optics may not necessarily be controllable. However, since light source 10 can be controlled, the beam 12 of light source 11 can also be controlled.

[0181] Referring to, for example, embodiments VI and VII, the light source 10 may be a laser light source.

[0182] Examples VIII and IX schematically illustrate the transmission modes. Example VIII shows a light transmission support 400. Example IX shows a self-supporting arrangement 2000. In Example VIII, as an example, a controllable lens is shown as a controllable optics device 450. In Example IX, a micromirror has been shown as an example of a controllable optics device 450.

[0183] Figure 1c schematically shows another array of light emitters 2100. However, other arrangements are also possible.

[0184] Referring to Figures 1d and 1e, several embodiments and variations are schematically illustrated in which the beam shape of one or more beams can be controllable. This can lead to selective excitation. This can result in different beam shapes of the light emanating from the arrangement and / or different spectral power distributions of the light emanating from the arrangement. Here, beam 12 of light source 11 is schematically shown. It will be understood that different light source beams and / or light source beams at different locations can provide light emanating from arrangement 2000 with different spectral power distributions, especially when the first and second light emanating materials are different.

[0185] Figure 1f schematically illustrates that in Embodiment I, the light source (not shown, but the beam of the light source may have a shape similar to the hollow circular beam of the system light 1001 schematically shown) can essentially only illuminate the second luminescent material 2220, while essentially not illuminating the first luminescent material 2110. This may result in essentially only the second luminescent material light 2221, which may have, for example, an annular shape. Therefore, in this mode of operation, the system light 1001 is essentially only the second luminescent material light 2221. On the right, in Embodiment II, an embodiment is schematically shown in which the light source (not shown, but the beam of the light source may have a shape similar to the circular beam of the system light 1001 schematically shown) can essentially only illuminate the first luminescent material 2110, while essentially not illuminating the second luminescent material 2220. This may result in essentially only the first luminescent material light 2111, which may have, for example, a circular shape. Of course, when controlling the beam shape of (multiple) beams of light from the light source (using a control system (not shown)), in the embodiment, the spectral power distribution of the system light 1001 can be controlled.

[0186] Therefore, in an embodiment, one or more light beams 12 have a spatial power distribution relative to the light-emitting arrangement 2000, wherein the spatial power distribution is controllable, wherein the light generation system 1000 further includes a control system 300 configured to control one or more of the following: (i) one or more light sources 10, and (ii) the spatial power distribution of one or more light beams 12 of one or more light sources 10 relative to the light-emitting arrangement 2000.

[0187] For example, in an embodiment, during the operation mode of the light generation system 100, the light generation system 100 is configured to irradiate the light emitter 2100 with at least 90% of the light source light 11 and irradiate the matrix 2210 with at most 10% of the light source light 11.

[0188] Figure 2 An embodiment of an illuminator 2 including the light generating system 1000 as described above is schematically shown. Reference numeral 301 indicates a user interface that may be functionally coupled to the control system 300 included in the light generating system 1000 or functionally coupled to the light generating system 1000. Figure 2 An embodiment of a lamp 1 including a light generating system 1000 is also schematically shown. Reference numeral 3 indicates a projector device or projector system that can be used for purposes such as projecting images onto a wall, and may also include the light generating system 1000. Reference numeral 1200 refers to a lighting device, which may be selected, for example, from the group consisting of: lamp 1, illuminator 2, and projection device 3. The lighting device 1200 includes the light generating device 1000. However, in embodiments, the lighting device 1200 may also include a disinfection device or an optical wireless communication device (including the light generating device 1000). Figure 2 An embodiment of a lighting device 1200 is also schematically shown, which includes wall lighting devices (e.g., particularly wall washer devices). The lighting device 1200 may also include bay lighting devices (for illuminating bays).

[0189] The term "multiple" refers to two or more.

[0190] Those skilled in the art will understand the terms "substantially" or "essentially" and similar terms used herein. The term "substantially" or "essentially" may also include embodiments with terms such as "complete," "entire," and "all." Therefore, in embodiments, the adjective "substantially" or "essentially" may also be removed. Where applicable, the term "substantially" or "essentially" may also refer to 90% or higher, such as 95% or higher, particularly 99% or higher, and more particularly 99.5% or higher (including 100%).

[0191] The term "comprising" also includes embodiments of which "comprise" means "forms of".

[0192] The term “and / or” specifically refers to one or more items mentioned before and after “and / or”. For example, the phrase “item 1 and / or item 2” and similar phrases may refer to one or more of item 1 and item 2. The term “comprising” in one embodiment may mean “consisting of”, but in another embodiment it may also mean “comprising at least defined species and optional one or more other species”.

[0193] Furthermore, the terms first, second, third, etc., used in the specification and claims are used to distinguish similar elements and are not necessarily used to describe an order or chronological order. It should be understood that such terms are interchangeable where appropriate, and the embodiments of the invention described herein can operate in orders other than those described or illustrated herein.

[0194] The equipment, apparatus, or system described herein may be used during operation. As will be apparent to those skilled in the art, the invention is not limited to the method of operation, or the equipment, apparatus, or system in operation.

[0195] It should be noted that the above embodiments are illustrative and not limiting of the invention, and those skilled in the art will be able to devise many alternative embodiments without departing from the scope of the appended claims.

[0196] In the claims, any reference numerals placed between parentheses should not be construed as limiting the claims.

[0197] The use of the verb "comprising" and its conjugations does not exclude the presence of elements or steps other than those described in the claims. Unless the context explicitly requires otherwise, throughout the specification and claims, the words "comprising," "including," etc., should be interpreted in an inclusive sense rather than an exclusive or exhaustive one; that is, in the sense of "including but not limited to."

[0198] The use of "one" or "one" before an element does not preclude the existence of multiple such elements.

[0199] This invention can be implemented by hardware comprising several different elements and by a suitably programmed computer. In the device, apparatus, or system claims that enumerate several means, several of these means can be implemented by the same hardware. The fact that certain measures are enumerated only in mutually different dependent claims does not mean that a combination of these measures cannot be used for an advantageous purpose.

[0200] The present invention also provides a control system that can control a device, apparatus, or system, or perform the methods or processes described herein. Furthermore, the present invention provides a computer program product that, when functionally coupled to or executed on a computer included therein, controls one or more controllable elements of such device, apparatus, or system.

[0201] The present invention is further applicable to devices, apparatuses, or systems that include one or more features described in the specification and / or shown in the accompanying drawings. The present invention also relates to a method or process that includes one or more features described in the specification and / or shown in the accompanying drawings.

[0202] The various aspects discussed in this patent can be combined to provide additional advantages. Furthermore, those skilled in the art will understand that embodiments can be combined, and more than one embodiment can be combined. Additionally, some features can form the basis for one or more partial applications.

Claims

1. A light generation system (1000) for generating system light, comprising one or more light sources (10), a light-emitting arrangement (2000), and a support (400). The light-emitting arrangement includes an array (2005) of light-emitting bodies (2100) and a matrix (2210) at least partially disposed between the light-emitting bodies (2100), wherein the light-emitting bodies (2100) include a first light-emitting material (2110), wherein the matrix (2210) includes a light-transmitting material (2215), wherein the light-transmitting material (2215) includes a second light-emitting material (2220), wherein the first light-emitting material (2110) and the light-transmitting material (2215) are different materials; and wherein the light-emitting body (2100) is a ceramic body; The light-transmitting material (2215) includes one or more of glass, inorganic polymer materials, organic polymer materials, quartz, and silicon dioxide; The one or more light sources (10) are configured to generate one or more beams (12) of light source light (11), the light-emitting arrangement (2000) is configured to be in a light-receiving relationship with the one or more light sources (10), and the first light-emitting material (2110) and the second light-emitting material (2220) are configured to convert at least a portion of the light source light (11) received by the first light-emitting material (2110) and the second light-emitting material (2220) into first light-emitting material light (2111) and second light-emitting material light (2221), respectively. The first luminescent material (2110) includes A3B5O. 12 Ce-type luminescent materials, wherein A includes one or more of Y, Gd, and Lu, and wherein B includes one or more of Al, Ga, In, and Sc; The one or more light sources (10) mentioned above include laser diodes or superluminescent diodes; The support (400) includes a thermally conductive material and is configured to support the light emitter (2100) and the matrix (2210). The system light includes the light from one or more of the first luminescent material (2110) and the second luminescent material (2220); and The system light is white light with a correlated color temperature (CCT) in the range of 2700K to 6500K.

2. The light generation system (1000) according to claim 1, wherein the matrix (2210) is defined by a continuous phase (2230) in which light-emitting particles (2240) are embedded, wherein the light-emitting particles (2240) include the second light-emitting material (2220), and wherein the light emitter (2100) is at least partially embedded in the continuous phase (2230).

3. The light generation system (1000) according to claim 2, wherein the continuous phase (2230) comprises an organic polymer material.

4. The light generation system (1000) according to any one of claims 2 to 3, wherein the continuous phase (2230) comprises an inorganic material.

5. The light generation system (1000) according to any one of claims 1 to 3, wherein the first luminescent material (2110) and the second luminescent material (2220) are different luminescent materials.

6. The light generation system (1000) according to any one of claims 1 to 3, wherein the first luminescent material (2110) and the second luminescent material (2220) are the same luminescent material.

7. The light generating system (1000) according to any one of claims 1 to 3, wherein the second luminescent material (2220) is selected from the A3B5O. 12 Ce-type luminescent materials, wherein A includes one or more of Y, La, Gd, Tb and Lu, and wherein B includes one or more of Al, Ga, In and Sc.

8. The light generation system (1000) according to any one of claims 1 to 3, wherein the light emitter (2100) has a first total cross-sectional area A1, and wherein the matrix (2210) has a second total cross-sectional area A2, wherein 0.1 ≤ A1 / A2 ≤ 4.

9. The light generating system (1000) according to any one of claims 1 to 3, wherein the cross-sectional area of ​​the light emitter (2100) defines a circular equivalent diameter D, and wherein the shortest distance (d1) between adjacent light emitters (2100) is selected from the range 0.

1. D≤d1≤4 D.

10. The light generating system (1000) according to any one of claims 1 to 3, wherein the support (400) is reflective or transmissive to light.

11. The light generation system (1000) according to claim 9, wherein the equivalent diameter D of the circle is in the range D≥2. H is the height of the light-emitting body (2100).

12. The light generation system (1000) of claim 11, wherein the one or more light beams (12) have a spatial power distribution relative to the light-emitting arrangement (2000), wherein the spatial power distribution is controllable, wherein the light generation system (1000) further includes a control system (300) configured to control one or more of: (i) the one or more light sources (10), and (ii) the spatial power distribution of the one or more light beams (12) of the one or more light sources (10) relative to the light-emitting arrangement (2000).

13. The light generation system (1000) according to any one of claims 11 to 12, wherein the one or more light sources (10) are selected from the group consisting of laser diodes and superluminescent diodes.

14. The light generation system (1000) according to any one of claims 11 to 12, wherein the beam shape of the one or more beams (12) of the light source light (11) is controllable, and wherein during the operation mode, the light generation system (1000) is configured to irradiate the light emitter (2100) with at least 80% of the light source light (11) and irradiate the matrix (2210) with at most 20% of the light source light (11).

15. The light generation system (1000) according to claim 1, wherein the system light further includes the light source light (11) of the one or more light sources (10).

16. A light generating device (1200) selected from the group consisting of lamps (1), illuminators (2), projection devices (3), disinfection devices and optical wireless communication devices, the light generating device (1200) comprising a light generating system (1000) according to any one of claims 12 to 15.

Images