WO2014191257A1 - Inorganic optical element and method for producing an inorganic optical element - Google Patents

Abstract

The invention relates to an inorganic optical element having a light-permeable or wavelength-converting substrate (1) on which a conversion layer (2) or a reflection layer (8) is arranged, wherein the conversion layer (2) or the reflection layer (8) has a lateral structure. The invention further relates to two methods for producing such an element.

Description

description

Inorganic optical element and method for producing an inorganic optical element

There will be an inorganic optical element and two

Process for producing an inorganic optical

Specified element. An inorganic optical element is described for example in the publication DE 10 2011 010 118.

Object of the present invention is to provide an improved inorganic optical element with

wavelength-converting and / or reflective

Specify properties. Furthermore, at least one

Method for producing such an optical element can be specified. An inorganic optical element comprises a substrate. By way of example, the substrate is designed to be wavelength-converting. The term "wavelength-converting" in the present case means, in particular, that irradiated

electromagnetic radiation of a particular

Wavelength range is converted into electromagnetic radiation of another, preferably longer wavelength, wavelength range. Usually one absorbs

wavelength-converting element electromagnetic

Radiation of a radiated wavelength range, this converts by electronic processes at the atomic and / or molecular level in electromagnetic radiation of another wavelength range and transmits the converted electromagnetic radiation again. In particular, will pure absorption or pure scattering is not referred to herein as wavelength conversion. The radiation of the other, preferably longer wavelength, wavelength range can

for example, a different spectral color than the

have radiated radiation. For example, the other wavelength range may lie in the green and / or red region of the electromagnetic spectrum, while the

Wavelength range of the irradiated radiation in the blue region of the electromagnetic spectrum can be.

Furthermore, the substrate may also be designed to be translucent. By the term "translucent" is meant in particular that the substrate has a particularly high

Has transmission coefficients for visible light. For example, a translucent substrate has a transmission coefficient greater than or equal to 0.9

visible light, particularly preferred is the

Transmission coefficient of the translucent substrate greater than or equal to 0.95. This is particularly preferred

translucent substrate free of

wavelength-converting properties.

The substrate may have a main plane of extension in which it extends in lateral directions. Perpendicular to the main plane of extension, in the vertical direction, the substrate may have a thickness. The thickness of the substrate may be small against the maximum extent of the substrate in a lateral direction. Furthermore, according to one embodiment, the inorganic optical element comprises a conversion layer which is arranged on the substrate and has a lateral structure. The conversion layer is also formed wavelength converting. The lateral structure may preferably have a greater extent than natural unevennesses occurring in the material of the conversion layer. Naturally occurring bumps can be characterized in particular by their irregularity. in the

In contrast, the lateral structure may be a regular, for example, periodically repeating structure. Accordingly, structural elements of the lateral structures can be repeated periodically and / or a regular shape

exhibit.

Alternatively or in addition to the conversion layer, the inorganic optical element may include a reflection layer

have, which is also arranged on the substrate. The conversion layer and / or the reflection layer are preferably of inorganic design. The reflection layer also has a lateral structure. The

Reflection layer is reflective.

For example, the reflective layer can have a

Reflection coefficients of at least 0.9, preferably of at least 0.95. Particularly preferred is the

Reflection layer free of wavelength-converting

Properties . Furthermore, it is also possible for the conversion layer to be reflective in addition to its wavelength-converting properties, for example by having an additional reflective material. Particularly preferably, the substrate is formed from an inorganic material. The substrate may be

for example, to act a ceramic plate or a glass plate. Is the substrate wavelength converting formed, it may be, for example, a YAG: Ce ceramic in the substrate.

The substrate has a first major surface and a second major surface opposite the first major surface. For example, both main surfaces are planar and parallel to each other. Furthermore, it is also possible that at least one of the main surfaces of the substrate is curved.

For example, the lateral structure has at least one line or at least one lens as a structural element. The line can in this case be designed, for example, as a ring, as a spiral or as a straight line. For example, the lateral structure is formed of a plurality of concentrically arranged rings. The rings are particularly preferred here

circular shaped. But it is also possible that the rings are oval or elliptical. Here, the numerical eccentricity of the ellipse may be at least 0.9.

If the lateral structure is formed by a structural element formed as a spiral, then the spiral is

for example, arranged centrally on the substrate. Furthermore, the lateral structure can also have a plurality of straight lines as structural elements. For example, the lateral structure may consist of a plurality of straight lines as structural elements. The straight lines can be arranged, for example, as a grid. The grid has this rule

Mesh on. The stitches can be enclosed by the straight line. The mesh size is preferably between 1 ymym and 200 ymym inclusive. In other words, a lateral distance of the straight line may be at least 1 ym and at most 200 ym. Furthermore, it is also possible that the straight lines are arranged parallel to one another at a distance. The distance between the straight lines may be the lateral distance in the present case. The lateral structure can be made, for example

 Structure elements exist, which are formed as a straight line and are arranged parallel to each other at a distance. The distance between the straight lines is preferably between 1 μm and 200 μm inclusive. The distance between the straight lines may in each case be the same or vary over the substrate.

Furthermore, the lateral structure as structural elements can have a multiplicity of lenses, preferably microlenses. The plurality of microlenses is particularly preferably arranged in the form of a matrix, that is to say in columns and rows. Furthermore, it is also possible that the lateral structure has a lens as a single structural element which extends over the entire substrate. Both

Microlenses may be present in particular

Structures of equal size act. Preferably, the

Microlenses impinging on them electromagnetic

Optically influence radiation such that a

directional radiation characteristic results. In the case of a single lens, it is possible for the lens to have a

Focal length whose amount is at least 3 m, preferably at least 0.5 m.

The lateral structure is particularly preferred

Formed structural elements that cover portions of the substrate. The parts of the substrate that are not of the

Structural elements are covered are preferably free

accessible. In other words, the lateral structure is the Conversion layer or the reflection layer such

formed so that breakthroughs are present in the structure that the reflective layer or the conversion layer

completely penetrate and thus parts of the substrate are free of the conversion layer or the reflective layer. Said parts may also be free of the conversion layer and the reflection layer. The parts of the substrate that are free of the conversion layer and / or the reflection layer can be freely accessible.

Does the inorganic optical element have a

Conversion on, so the optical element is suitable for incident electromagnetic radiation of a first wavelength range at least partially in

to convert electromagnetic radiation of a different from the first second wavelength range. In this case, the optical element is preferably provided for converting the incident radiation only partially, so that mixed-color radiation is generated with the aid of the optical element, which radiation is composed of unconverted radiation of the first

 Wavelength range and composed of converted radiation of the second wavelength range or

unconverted radiation of the first wavelength range and converted radiation of the second wavelength range.

The color location of the mixed-color radiation can now be adapted to a desired value by varying the structuring of the conversion layer. Is the

Conversion, for example, formed as a grid, it can be changed by varying the mesh size of the grid, the color location. If the conversion layer is formed by parallel straight lines, then by variation of the Distance of the straight line of the color space can be changed specifically. Also by varying the thickness of the conversion layer of the color of the obtained mixed-colored radiation can be adjusted.

Compared to a continuous one

Conversion layer or reflection layer has a

structured conversion layer or reflective layer further has the advantage that defects due to

Cracking or delamination may occur.

For example, the width of a feature is between 1 ym and 200 ym inclusive. If the structural element is a line, for example, the width of the line has a value from the above-mentioned range. The width of the

Structural element may also extend over the entire width of the optical element. The thickness of the conversion layer or the reflection layer particularly preferably has a value of between 1 μm and 100 μm inclusive.

For example, a structural element, such as a

Line, an aspect ratio of between 1/200 and 10 inclusive. With aspect ratio, the ratio of height to width of the structural element is referred to herein. The width of the structural element may be the extent of the structural element along at least one lateral direction. The height of the

 Structural element can in this case the extension of the

Structure element in the vertical direction. According to one embodiment of the optical element, the conversion layer is a layer stack with different

Single layers formed. Here, the individual layers differ for example in terms of their

Material composition. At least one of the individual layers of the layer stack is formed wavelength-converting. Particularly preferably, a first single layer of the

Layer stack on a first phosphor and a second single layer of the layer stack a second phosphor which is different from the first phosphor. In particular, the first phosphor and the second phosphor are

particularly preferably suitable, incident light of the first wavelength range in two different

To convert wavelength ranges. For example, the first phosphor is capable of converting incident blue light to yellow-green light, while the second phosphor is capable of converting incident blue light to red light. Furthermore, it is also possible that the

Layer stack further single layers with further

having different phosphors. The conversion layer can have a multiplicity of different individual layers with different wavelength-converting properties. Furthermore, it is also possible for the conversion layer to be different from one another laterally arranged regions

which, in terms of their

Distinguish wavelength-converting properties.

By way of example, the conversion layer may comprise first regions and second regions, wherein the first regions comprise the first phosphor and the second regions comprise the second phosphor. Preference is given here to the first

Areas free from the second phosphor and the second Areas free from the first phosphor. For example, the first areas and the second areas

be arranged in a checkerboard pattern. A conversion layer with different wavelength-converting regions, which are arranged laterally side by side, advantageously has an increased efficiency compared to stacked individual layers with different as a rule

wavelength-converting properties.

Alternatively, it is also possible that the conversion layer comprises a mixture of a first phosphor and a second phosphor, wherein the first phosphor is different from the second phosphor. Here are the

Phosphors are not different from each other

Single layers on top of each other or laterally arranged side by side in different areas, but the two phosphors are distributed over the entire conversion layer. In addition to a second phosphor, it is also possible that the conversion layer has a third or a fourth

Has phosphor.

For example, the following materials are suitable as phosphors: rare earth doped garnets, rare earth doped alkaline earth sulfides, rare earth doped thiogallates, rare earth doped aluminates, rare earth doped silicates, rare earth doped orthosilicates, rare earth doped chlorosilicates rare earth doped nitrides, rare earth doped alkaline earth silicon nitrides, rare earth minerals

doped oxynitrides doped with rare earths

Aluminum oxynitrides, rare earth doped

Silicon nitrides, rare earth doped sialons. According to a further embodiment of the optical element, the first phosphor is a

nitride phosphor such as rare earth-doped nitride, rare-earth-doped alkaline-earth silicon nitride, rare-earth-doped oxynitride, rare earth-doped one

Aluminum oxynitride or a rare earth doped silicon nitride. The second phosphor in this embodiment is preferably an oxidic phosphor, such as a rare earth-doped garnet, a rare-earth doped garnet

Aluminates or a rare earth doped

Orthosilicates. By way of example, the substrate has a wavelength-converting design and has a first oxidic phosphor, such as YAG: Ce. For example, a nitridic conversion layer is arranged on this substrate. According to one embodiment, the conversion layer or the reflection layer are formed as ceramics. It is also possible that the conversion layer and the

Reflection layer are formed as a ceramic. Alternatively, it is also possible that the conversion layer has a glass matrix into which particles of at least one phosphor are introduced. Likewise, the

Reflection layer have a glass matrix, in the

reflective particles are introduced. The glass matrix has the advantage of being the one introduced

Materials, such as reflective or

Wavelength-converting particles from environmental influences, such as moisture, protects. Particularly preferably, the glass matrix is a low-melting glass. In the processing of low-melting glass advantageously comparatively low temperatures can be used, which in particular a

 Damage to the introduced materials, such as reflective or wavelength-converting particles avoids.

The following materials are suitable for

Reflective layer to confer reflective properties: titanium oxide, alumina, silica, zinc oxide,

Barium sulfate, magnesium oxide, tantalum oxide, hafnium oxide,

Gadolinium oxide, niobium oxide, yttrium oxide. Particularly preferably, the inorganic optical element is formed of inorganic materials and free of organic materials. An inorganic optical element particularly advantageously has improved heat dissipation during operation.

The inorganic optical element described here is particularly suitable in an optoelectronic

Component to be used as a light emitting diode.

For example, an optical element with

wavelength-converting properties are introduced into the beam path of a radiation-emitting semiconductor body and at least partially convert its radiation into radiation of a different wavelength during operation of the semiconductor body.

In the following, two methods for producing an inorganic optical element will be described. An inorganic optical element described herein may be preferred be prepared with a method described here. That is, all features disclosed for the methods are also disclosed for the inorganic optical element and vice versa.

Both methods provide a translucent or a wavelength-converting substrate.

In the one method, the conversion layer or the reflection layer on the substrate then with a

laser-assisted method deposited. Especially

preferred is the conversion layer or the

Reflection layer in this case with a lateral structure, as described above, deposited.

It is particularly preferred that

laser-assisted methods for an additive freeform method, such as a micro laser cladding method or a micro laser sintering method. It is also possible that the two methods are combined. In particular, structural elements which are formed as three-dimensional free forms can advantageously be produced with these methods. Furthermore, can usually very small advantage

Structural elements, for example, with dimensions up to 50 ym, are generated by these methods.

A layer deposited with a laser-assisted method can be distinguished, in particular, by the fact that the layer has fewer impurities due to foreign atoms and / or molecules than an otherwise identical layer which is not deposited and / or produced by means of a laser-assisted method. Furthermore, one with a

A laser-deposited method deposited layer smaller pore size than an otherwise identical layer, not by means of a laser-assisted process

deposited and / or manufactured exhibit. It is thus possible to detect the use of a laser assisted method on the finished inorganic optical element.

In a micro-laser cladding method, a

Powder mixture provided which contains the starting materials of the applied layer as a particle. The

 Powder mixture is usually formed from inorganic particles. The powder mixture is introduced into a laser beam which is directed onto the surface to be coated. The fact that the powder mixture is introduced into the laser beam can here and below mean that a

 Powder jet, which provides the powder mixture, at least on a region to be coated to

coating surface overlaps with the laser beam. The laser beam heats up the particles of the powder mixture, which generally melts the particles completely or partially and

separates the particles of the powder mixture on the

coated surface off. The resulting layer is usually formed from the particles of the powder mixture. For example, a full-ceramic layer can be formed using a micro-laser cladding method. A fully ceramic layer may in this case be a layer which is at least 90%, preferably at least 95% and particularly preferably at least 99%, formed with a ceramic material or consists of such.

In a micro-laser sintering process, first a thin layer of a powder mixture, which is also the

Starting materials of the applied layer as particles contains, applied to the surface to be coated. The powder mixture is usually formed in turn from inorganic particles. The application of the powder mixture to the surface to be coated is usually carried out

the entire surface. The areas of the surface to be coated which are to be provided with the layer are then treated with a laser. In this case, the particles usually melt again in whole or in part, resulting in an inorganic layer of the powder mixture on the

Surface. The inorganic layer can turn

be formed full ceramic. If a structured layer is applied by the micro-laser sintering method, the areas of the surface which are not treated with the laser are subsequently removed from the surface

Powder mixture freed.

Furthermore, it is also possible in a micro-laser sintering method or a micro-laser cladding method to use a powder mixture, in addition to the

Phosphorus particles and / or the reflective particles also contains glass particles. In the case of the micro-laser sintering method or a micro-laser cladding method, only the glass particles preferably melt and form from the

Powder mixture a conversion layer or a

Reflection layer in that the glass particles melt and form a glass matrix in which the phosphor particles and / or the reflective particles are embedded.

With a laser-assisted method, in particular with a micro-laser-cladding method or a micro-laser-sintering method, it is particularly advantageously possible to apply conversion layers which are different

Have phosphors and at the same time formed ceramic are. In other manufacturing processes for ceramic conversion layers with different phosphors, the problem usually arises that in the sintering of the ceramics comparatively high temperatures must be used, resulting in a chemical reaction of

 Phosphors with each other and thus lead to their degradation.

According to one embodiment of the method, the substrate during the deposition of the conversion layer or the

Reflection layer heated. In this way, thermal gradients between the layer to be deposited and the substrate during deposition can be reduced. This improves the adhesion between the layer to be applied and the substrate and reduces cracking in the applied layer.

If a conversion layer is to be deposited, then the powder mixture contains particles of the phosphor, which is the

Conversion layer the wavelength-converting

Lends properties. Should a reflection layer

are deposited, the powder mixture contains the reflective particles, which gives the reflective layer, the reflective properties.

As a starting material for the conversion layer can

For example, a powder mixture can be used with particles of at least one phosphor, which are coated with a glass. In a micro-laser cladding method or a micro-laser sintering method, the

Glass coating of the particles then at least partially melted and the particles together to form a continuous layer connected. For example, layers produced in this way can have pores.

Accordingly, it is also possible that a powder mixture with reflective particles coated with a glass is used as the starting material for the reflective layer.

Preferably, the glass is a low one

melting glass. The glass may for example comprise one of the following materials or consist of one of the following materials: PbO-ZnO-B203-SiO 2, PbO-ZnO-B 2 O 3

(Glass transition temperature usually between 575 ° C and 730 ° C, depending on the lead content), Na20-PbO-B203-SiO2 (glass transition temperature usually between

including 380 ° C and including 470 ° C, depending on lead content), Na20-B203-SiO2, ZnO-SrO-B203, SiO2-B203-ZnO-Bi203-A1203 (glass transition temperature generally about 380 ° C), ZnO-B203 , SrO-B203, ZnOSrO-B203.

With a micro-laser cladding method, it is furthermore advantageously possible, in particular, to produce a conversion layer which is formed from a layer stack of different individual layers or various laterally arranged ones

Has wavelength converting areas. For applying different individual layers or different

lateral areas which comprise different phosphors, in each case corresponding powder mixtures

used.

In another method for producing a

inorganic optical element is in turn a

translucent or wavelength converting Substrate provided. A green sheet is applied to the substrate. The green sheet may be flexible and have a thickness of at least 50 ym and at most 1 mm, preferably at most 500 ym.

The green sheet contains either reflective particles and / or particles of at least one phosphor. Furthermore, the green sheet may also contain glass particles, which later form a glass matrix for the phosphor particles and / or the reflective particles. This green sheet serves as a starting material for a conversion layer or a

Reflective layer. If the green film serves as the starting material for a conversion layer, then it contains particles of the phosphor which contain the conversion layer

gives wavelength-converting properties. If the green film serves as a starting material for a reflection layer, it contains reflective particles which are the basis of the

 Reflective layer which gives reflective properties. The green sheet is patterned after application to the substrate with a laser beam, wherein structural elements of the green sheet are sintered into a ceramic. In general, the parts of the green sheet, which are not patterned with the laser beam and sintered, then from the

Substrate removed.

It should be noted at this point that features and elements that are only in conjunction with the optical

Element can also be used in conjunction with one of the methods and vice versa.

Further advantageous embodiments and developments of the invention will become apparent from the embodiments described below in conjunction with the figures. A method for producing an inorganic optical element according to a first embodiment will be described with reference to the schematic sectional views of Figures 1 to 5.

With reference to the schematic sectional views of Figures 6 to 8, a method for producing an inorganic optical element according to another embodiment described.

Based on the schematic sectional views according to the

 Figures 9 to 12 will be another

 Embodiment of a method for producing an optical inorganic element described.

FIGS. 13 to 17 show schematic representations

 inorganic optical elements according to one embodiment.

The same, similar or equivalent elements are provided in the figures with the same reference numerals. The figures and the proportions of the elements shown in the figures with each other are not to scale

consider. Rather, individual elements, in particular layer thicknesses, can be shown exaggeratedly large for better representability and / or better understanding.

In the method according to the exemplary embodiment of FIGS. 1 to 5, an inorganic substrate 1 is provided in a first step (FIG. 1). The substrate 1 may, for example, be a transparent substrate 1, such as a glass substrate, or a wavelength-converting substrate 1, such as a YAG: Ce ceramic

act. In a next step, using a

laser-assisted method, a first single layer 21 of a structured conversion layer 2 deposited on the substrate 1. The laser-assisted method in the present case is a micro-laser cladding method. In the micro laser cladding method, a powder mixture 3 is provided, which is introduced into a laser beam 4 (FIG. 2). In the present case, the powder mixture 3 has particles of a first phosphor. In the micro-laser cladding method, a structural element 5 of a structured single layer is formed on the substrate 1, which consists of the

Particles of the powder mixture 3 is formed. In which

In the present exemplary embodiment, a line is shown by way of example as a structural element 5 in FIG. The first single layer 21 of the conversion layer 2 comprises the first phosphor, which in the present case is suitable for converting incident blue light into yellow-green light. The first phosphor is, for example, an oxidic phosphor, such as YAG: Ce.

In a next step, a second powder mixture 3 'is used as the starting material for a further single layer 22 of the conversion layer 2. The second powder mixture comprises particles of a second phosphor which is different from the first phosphor. The second phosphor is, for example, nitridic and suitable for at least partially converting incident blue light into red light. For example, it is the second Phosphorus around (Sr, Ca) 2Si5Ng: Eu. The second powder mixture 3 'is in turn introduced into the laser beam 4 and a further single layer 22 is deposited on the first single layer 21 by means of the micro laser cladding method (FIG. 4).

FIG. 5 schematically shows the finished inorganic optical element. On a first main surface of the

Substrates 1, a conversion layer 2 is applied, consisting of two different wavelength-converting

Single layers 21, 22 consists. The first

Wavelength-converting single layer 21 is suitable here for partially converting incident blue light into yellow light. On the first single layer 21, a second wavelength-converting single layer 22 is applied, which has a second phosphor which is nitridic

is trained. The nitridic phosphor is to

suitable, incident blue light in red light

convert. Such an optical element is

especially suitable for producing mixed-colored light from the warm-white region in conjunction with incident blue light. The conversion layer 2 of the optical element has a lateral structure with a structural element 5, which is formed as a line. Depending on the size of the line can be achieved with the optical element color of the

be adapted to mixed-color light.

In the method according to the embodiment of FIGS. 6 to 8, a substrate 1 is again provided (not shown). On the substrate 1, a powder mixture 3 is applied over its entire surface as the starting material. The

Powder mixture has reflective particles 6, which are coated with a glass coating 7 (Figure 6). In a next step, a structured reflection layer 8 is produced on the substrate 1 using a micro-laser sintering method. For this purpose, the powder mixture 3 in a predetermined range with a laser beam 4th

partially melted and combined into a layer

(Figure 7). In particular, the glass coating 7 of the reflective particles 6 at least partially melts due to the irradiation with the laser beam 4 and connects the individual reflective particles 6 to a continuous one

Structural element 5 of the reflection layer 8. The remaining loose powder mixture 8 is again removed from the surface of the substrate 1, so that a line-shaped structural element 5 of the reflection layer 8 on the substrate 1 is formed (Figure 8).

In the exemplary embodiment according to FIGS. 9 to 12, again in a first step, a substrate 1 is produced

provided (Figure 9). On the substrate 1, a green sheet 9 is applied over the entire area in direct contact,

for example by lamination (Figure 10). The green sheet 9 has, for example, particles of a phosphor which imparts wavelength-converting character to the green sheet 9 and the ceramic layer to be formed therefrom. Furthermore, it is possible that the green sheet 9 additionally or alternatively to the phosphor particles comprises reflective particles 6, which gives the green sheet 9 and the ceramic layer to be formed from it reflective properties.

In a next step, the green sheet 9 is processed with a laser beam 4, so that the processed areas are sintered into a ceramic (Figure 11). The non-irradiated with the laser beam 4 areas of the green sheet 9 are removed again from the substrate 1 and there is a structured layer, for example, as

Conversion layer 2 or as a reflection layer 8 is formed on a main surface of the substrate 1 (Figure 12).

Figure 13 shows a schematic plan view of a

inorganic optical element according to a

 Embodiment. The inorganic optical element according to FIG. 13 has a substrate 1 onto which a

Conversion layer 2 is applied with a lateral structure. The lateral structure is linear

Structural elements 5 formed. Each line-shaped

Structural element 5 is formed here as a straight line. The straight lines are arranged parallel to each other at equal intervals on the substrate 1. The regions of the substrate 1 between the line-shaped structural elements 5 are freely accessible.

Figure 14 shows a schematic perspective view of an optical element according to another

Embodiment. In contrast to the optical element according to FIG. 13, the conversion layer 2 has a lateral structure in the form of a grid on the substrate 1.

FIG. 15 also shows a schematic perspective view of an optical element according to FIG

Embodiment. In this case, the optical element has a conversion layer 2 with a lateral structure whose structural elements 5 are designed as microlenses. The microlenses 5 are arranged on the substrate 1 in the form of a matrix, that is to say along rows and columns.

FIG. 16 shows a schematic plan view of an optical element according to a further exemplary embodiment. The In this case, the optical element has a conversion layer 2 or a reflection layer 8, the lateral structure of which consists of concentrically arranged, circular rings

Structural elements 5 is formed.

The conversion element according to the exemplary embodiment of FIG. 17 has a conversion layer 2 with first regions 10 and second regions 11 which are different in terms of their wavelength-converting properties. The first regions 10 comprise a phosphor capable of converting incident blue light to red light. For example, the first phosphor is a nitride phosphor. The second regions 11 comprise a second phosphor capable of converting incident blue light to yellow light. The second phosphor is particularly preferably an oxidic phosphor. The first regions 10 are present rectangular, more preferably square. The second regions 11 are presently rectangular and particularly preferably square. The first regions 10 and the second regions 11 are arranged in rows and columns. In one line, the first regions 10 and the second regions 11 are each arranged laterally alternately next to one another. Also in a column, the first regions 10 and the second regions 11 are each arranged laterally alternately side by side. In other words, the first regions 10 and the second regions 11 of the conversion layer 2 are according to FIG

Embodiment of Figure 17 checkerboard

arranged. The present application claims the priority of the German application DE 10 2013 105 533.8, whose

The disclosure is hereby incorporated by reference. The invention is not limited by the description based on the embodiments of these. Rather, the invention encompasses every new feature as well as every combination of features, which in particular includes any combination of features in the patent claims, even if this feature or this combination itself is not explicitly described in the claims

 Claims or embodiments is given.

Claims

claims 1. Inorganic optical element with:  a translucent or wavelength-converting substrate (1) and  a conversion layer (2) or a reflection layer (8) arranged on the substrate (1), wherein the Conversion layer (2) or the reflection layer (8) have a lateral structure. 2. Optical element according to the preceding claim, wherein the substrate (1) is a ceramic plate or a Glass plate is. 3. An optical element according to one of the preceding claims, in which the lateral structure has at least one of the following structural elements (5): a ring, a spiral, a straight line, a lens. An optical element according to any one of the preceding claims, wherein the lateral structure comprises a structural element (5) having a width of between 1μm inclusive and 200μm inclusive. 5. Optical element according to one of the preceding claims, wherein the conversion layer (2) or the reflective layer (8) has a thickness between 1 ym and inclusive including 100 ym. 6. Optical element according to one of the preceding claims, wherein the structure is a structural element (5) having a Aspect Ratio between and including 1/200 and including 10. 7. Optical element according to one of the preceding claims, wherein the conversion layer (2) is a layer stack of different individual layers (21, 22), of which a first single layer (21) comprises a first phosphor and a second single layer (22) one of the first Phosphorus has different, second phosphor. 8. An optical element according to one of the preceding claims, wherein the conversion layer (2) or the reflective layer (8) with a laser-assisted method, in particular a micro-laser cladding method and / or a micro-laser sintering method. 9. Optical element according to one of the preceding claims, wherein the conversion layer (2) comprises a mixture of a first phosphor, which is in particular a nitridic phosphor, and a second phosphor other than the first phosphor, which is in particular an oxidic phosphor. 10. Optical element according to one of the preceding claims, wherein the substrate (1) wavelength converting is formed and has a first oxide phosphor and a conversion layer (2) on the substrate (1) is arranged, which is formed nitridically. 11. Optical element according to one of the preceding claims, wherein the conversion layer (2) has first regions (10) and second regions (11), the different have wavelength-converting properties and are arranged side by side in a checkerboard pattern. 12. An optical element according to one of the preceding claims, wherein the conversion layer (2) has a glass matrix in which particles of at least one phosphor are introduced or the reflection layer (8) has a glass matrix, are incorporated in the reflective particles. 13. An optical element according to one of the preceding claims, wherein the conversion layer (2) or the reflection layer (8) is formed as a ceramic. 14. A process for producing an inorganic optical element comprising the steps of:  - Provide a translucent or wavelength-converting substrate (1), - depositing a conversion layer (2) or a Reflection layer (8) on the substrate (1) with a laser ^¬ supported method. 15. Method according to the preceding claim, where the laser-assisted method is a micro-laser Cladding method or a micro-laser sintering method is. 16. The method according to any one of the preceding claims, in which the material of the conversion layer (2) or the material of the reflection layer (8) is provided as a ceramic powder. 17. The method according to any one of the preceding claims, in which the substrate (1) during the deposition of Conversion layer (2) or the reflective layer (8) is heated. 18. The method according to any one of the preceding claims, in which as the starting material for the conversion layer (2) particles of at least one phosphor are used which are coated with a glass (7) or in which Starting material for the reflective layer (8) reflective Particles are used, which are coated with a glass (7). 19. The method according to any one of the preceding claims, in which as starting material for the conversion layer (2) or the reflection layer (8) a mixture of particles is used, which contains glass particles. 20. A method for producing an inorganic optical element comprising the steps of:  - Provide a translucent or wavelength-converting substrate (1),  - Applying a green sheet (9) with reflective Particles and / or particles of at least one phosphor on the substrate (1), and  - Texturing of the green sheet (9) with a laser beam (4), wherein structural elements (5) of the green sheet (9) are sintered into a ceramic.