Light-emitting devices and illumination devices

Abstract

The light-emitting device (1) includes at least one LED chip (3) for generating primary light (P) of a primary spectrum, and a secondary light (S) of a secondary spectrum different from the primary spectrum. i At least one conversion member (K) for converting to ). i ) comprises the above. Primary light (P) is emitted over the emission solid angle range (A) of the light-emitting device. At least one conversion member (K i ) is the solid angle sub-range (T) of the emission solid angle range (A). i This covers only the surface, thereby making the emission spectrum of the light-emitting device (1) solid angle dependent.

Description

[Technical Field]

[0001] This patent application claims priority to German patent application DE 10 2023 206 082.5, the contents of which are incorporated herein by reference.

[0002] The present invention relates to a light-emitting device, particularly an LED package. The present invention also relates to a lighting device, particularly a lighting device for lighting fixtures and / or projectors, for example, a lighting device for a head-up display, a beam projector and / or data glasses (e.g., smart glasses). [Background technology]

[0003] Light-emitting devices, particularly LED packages, are publicly known through open use. [Overview of the project] [Problems that the invention aims to solve]

[0004] The object of the present invention is to improve light-emitting devices, and in particular to provide a light-emitting device that is especially suitable for applications where direction-dependent emission characteristics are desired, such as ambient lighting. [Means for solving the problem]

[0005] This objective is achieved by the light-emitting device described in claim 1. This light-emitting device comprises at least one LED chip for generating primary light of a primary spectrum and at least one conversion member for converting the primary light into secondary light of a secondary spectrum different from the primary spectrum. The primary light is emitted by the LED chip over the solid angle emission range of the light-emitting device. The at least one conversion member covers only a solid angle sub-range of the solid angle emission range, thereby making the emission spectrum of the light-emitting device solid angle dependent. The light-emitting device (also called a light-emitting body) is in particular an LED package.

[0006] This light-emitting device has the advantage of being able to flexibly and easily realize, especially set, the emission characteristics depending on the solid angle. The emission spectrum depending on the solid angle can be generated without particularly requiring a plurality of LED packages, especially a plurality of LED chips and their complicated arrangements. Thereby, an emission spectrum depending on the solid angle can be realized with minimal space requirements and low material costs. This light-emitting device is particularly suitable for ambient lighting in which the color changes according to the solid angle.

[0007] The emission spectrum is the spectrum of the light emitted to the outside by a light-emitting device, especially an LED package. The emission spectrum can be changed in different solid angle partial ranges by at least one conversion member. In the solid angle partial range without a conversion member, the emission spectrum can be mainly a primary spectrum. In the solid angle partial range assigned to the conversion member, the emission spectrum is particularly dominated by the converted secondary spectrum. The emission spectrum is different from the emission spectra of other solid angle partial ranges where other conversion members are arranged or no conversion member is arranged. Depending on the solid angle, the primary light and / or secondary light of one or more conversion members can be emitted.

[0008] Advantageously, the emission spectrum depending on the solid angle enables the color of the emitted light depending on the solid angle, especially the color gradient (color gradation) depending on the solid angle. In different solid angle partial ranges, the respective colors and / or the color transitions between different colors can be selectively generated. For example, lights of different colors can be emitted in different spatial directions.

[0009] For example, three or more different solid angle partial ranges having different emission spectra may be provided, especially three or more solid angle partial ranges in which lights of different colors are emitted. The more solid angle partial ranges having different emission spectra are used, the more different colors can be generated. Preferably, there are at least as many different solid angle partial ranges as the number of different colors to be generated.

[0010] Furthermore, this light-emitting device is particularly suitable for supplying light of different spectra, especially light of different colors, to different components, especially further components of a lighting device. In particular, the emitted spectra of different solid angle subranges can be further modified and / or utilized independently of each other. For example, different mirrors, light guides, and / or other optical components can be assigned to different solid angle subranges, which redirect, transmit, detect, and / or process their respective emitted spectra.

[0011] The output spectrum is preferably in the visible wavelength range, particularly between 380 nm and 780 nm. Depending on the application, the output spectrum may also include parts of the infrared range and / or UV range.

[0012] The secondary spectrum of at least one conversion member covers at least a partial range of the wavelength range covered by the output spectrum. The primary spectrum may cover a portion of the output spectrum, particularly if the conversion members are not positioned within individual solid angle subranges, thereby allowing the primary spectrum to directly contribute to the output spectrum. The primary light may be visible light. The primary light may also include other wavelengths, particularly in the UV range. The primary light may be selected in particular to be absorbed particularly well by the relevant conversion member.

[0013] At least one conversion member includes, in particular, at least one photoconversion material. Different conversion members may include, in particular, different photoconversion materials, and / or different concentrations of at least one photoconversion material, and / or different mixtures of photoconversion materials.

[0014] A conversion member, particularly the light conversion material contained therein, absorbs primary light and emits secondary light. Suitable conversion members include, in particular, light conversion materials that exhibit luminescence, especially photoluminescence (e.g., fluorescence or phosphorescence). This type of material is also called a phosphor. A suitable light conversion material can be selected according to the desired secondary spectrum.

[0015] Examples of suitable phosphors are, in particular, CaAlSiN3:Eu

[0016] , 11 , , 3+ , , , , (Sr,Ca)AlSiN3:Eu 2+ , Lu2O3:Eu 3+ , (Sr 2-x La x ) (Ce 1-x Eu x )O4, Sr2Ce 1-x Eu x O4, Sr 2-x Eu x CeO4, SrTiO3:Pr 3+ ,Ga 3+ , Sr2Si5N8:Eu 2+ , CaSc2O4:Ce 3+ , CaSc2O4:Ce 3+ , Y3(Al,Ga)5O 12 :Ce 3+ , Lu3Al5O 12 :Ce 3+ , YAG:Ce 3+ , La3Si6N 11 :Ce [[ID=7):Ce 3+ 、and / or (La,Y)3Si6N 11 :Ce 3+ are as follows.

[0016] Particularly suitable conversion materials include quantum dot-type photoconversion materials, such as cadmium-containing or cadmium-free quantum dots. Examples of materials suitable for quantum dots include CdSe / ZnS, InP / ZnS, ZnSe / ZnS, and / or perovskites, especially CsPbX3 (where X is selected from the group consisting of Cl, Br, and / or I). Quantum dots are nanoparticles having different emission spectra depending on their diameter and / or starting material. Their diameter can be in the range of 1 nm to 20 nm, for example, in the case of CdSe-based quantum dots. Thus, the emission spectrum, particularly the maximum position and / or spectral width, can be easily and efficiently adjusted depending on the size and / or starting material. By appropriately mixing and using quantum dots of different diameters, the spectral width of the resulting secondary spectrum can be adjusted in particular.

[0017] The light-emitting device comprises at least one LED chip. The light-emitting device may also comprise multiple LED chips, for example, two, three, four, five, or more LED chips.

[0018] The light-emitting device described in claim 2 is particularly suitable for ambient illumination. Different color stimulus specifications in different solid angle subranges enable emission that depends on the direction of different colors and / or mixed colors, for example, in the intermediate range between solid angle subranges. In this way, particularly attractive color gradients and / or effects can be achieved. Different color stimulus specifications should be understood in the sense that each emitted spectrum has a perceptually different color to the observer, in particular a different primary color in the color system. Different color stimulus specifications can be caused by different spectral gradients. In particular, each emitted spectrum may have different maximum wavelengths and / or center wavelengths.

[0019] Preferably, primary colors and secondary colors, particularly primary colors of different color systems, can be generated in different spatial directions.

[0020] The light-emitting device according to claim 3 enables a particularly flexible solid angle-dependent output spectrum. The secondary spectra of different conversion members are different and have particularly different color stimulus specifications. The secondary spectra may have particularly different maximum wavelengths or central wavelengths. The secondary spectra may cover particularly different ranges of the output spectrum.

[0021] In particular, the use of multiple conversion members enables finer gradation (gradation) of the differences in the output spectrum across different solid angle regions. The output spectrum can be adjusted accurately and flexibly. Specifically, by using multiple conversion members, a color gradient can be generated in the output spectrum.

[0022] For example, the light-emitting device may have at least three different solid angle subranges. Preferably, a primary color of a certain color system may be emitted in each of the different solid angle subranges. For example, the primary light (preferably blue light) of an LED chip may be emitted in one solid angle subrange, while in the other solid angle subranges, green light and red light are emitted, respectively, via a suitable conversion member.

[0023] The light-emitting device described in claim 4 is flexible in use and structurally simple. By using different light-converting materials and / or different concentrations of at least one light-converting material in different conversion members, it is possible to precisely adjust the conversion from primary light to the relevant secondary light depending on the application. For example, the color of the secondary light can be adjusted by the selection of the light-converting medium. It is also possible to achieve different mixtures between primary and secondary light by different concentrations of the light-converting material. Furthermore, it is possible to produce mixed colors by mixing different light-converting materials at their respective concentrations.

[0024] The light conversion material may be incorporated, in particular, into the encapsulation portion of at least one LED chip and / or the coating of at least one LED chip. This allows for a particularly preferred arrangement of the light conversion material and further provides mechanical protection to at least one LED chip.

[0025] The light-emitting device may have a housing, particularly a sealing portion, which at least partially accommodates and particularly seals at least one LED chip. The housing, particularly the sealing portion, is particularly light-transmitting. Light transmittance should be understood in the sense that the housing, particularly the sealing portion, is transmittance to light in at least the optical wavelength range or the visible wavelength range.

[0026] The light-emitting device described in claim 5 is particularly robust. At least one LED chip is reliably protected from external influences. For example, the sealing portion may be formed from at least a partially light-transmitting material.

[0027] The light-transmitting seal described in claim 6 has been found to be particularly effective. The light-transmitting resin and glass are robust and exhibit good transmittance in the optical wavelength range. The light-transmitting resin, in particular, allows for flexible molding of the seal. The seal may include a diffusing material, such as diffusing particles.

[0028] The light-emitting device according to claim 7 is particularly robust. At least one conversion member is protected from external influences within the seal. Preferably, all conversion members are embedded in the seal. For example, the light-converting material of at least one conversion member, particularly different light-converting materials of different conversion members, may be embedded in the seal. The light-converting material may be embedded uniformly or with locally varying concentrations within the seal. The seal is advantageous in that it allows for easy and precise setting of various solid angle subranges.

[0029] The light-emitting device described in claim 8 is structurally simple and flexible in use. At least one conversion member can be compactly arranged on the associated LED chip. The definition of the solid angle subrange can be easily and accurately set by coating the corresponding surface area of ​​the LED chip.

[0030] The light-emitting device described in claim 9 enables particularly precise setting of the solid angle-dependent output spectrum. Optical separation, particularly shielding, of different solid angle subranges ensures that primary and / or secondary light from one solid angle subrange cannot penetrate other solid angle subranges. This ensures a fixed assignment of the output spectrum to the solid angle subranges. Stray light, particularly stray light with off-color from other solid angle subranges, is avoided.

[0031] Optical separation, particularly optical shielding, can be achieved by shielding sections (screens) between each solid angle sub-range. For example, the shielding section may be incorporated into the encapsulation of the LED chip. This ensures a stable and reliable arrangement of the shielding section.

[0032] Optical separation, in particular optical shielding, may be achieved additionally or alternatively via at least one lens positioned to at least partially focus light from one of the solid angle subranges. For example, this lens is positioned to focus light over the surface coating area of ​​at least one LED chip and / or the area of ​​the sealing portion where at least one conversion member is formed. Preferably, there are at least two lenses positioned to at least partially focus light from each solid angle subrange.

[0033] The light-emitting device according to claim 10 enables the precise setting of different secondary spectra in different solid angle subranges. The secondary spectra of optically separated solid angle subranges do not affect or interfere with each other. Preferably, shielding sections are provided between each solid angle subrange for optical separation, particularly shielding, of each solid angle subrange.

[0034] The light-emitting device according to claim 11 allows for particularly flexible setting of solid angle-dependent emission characteristics. At least two lenses may be formed, for example, by the housing of the LED chip. The housing may, in particular, form a multi-lens. Particularly preferably, there is one lens for each solid angle subrange. Advantageously, these lenses allow for the separation, in particular shielding, of the light components assigned to each solid angle subrange without requiring shielding or other shielding means. Through these lenses, the emitted light can be additionally or alternatively tuned as a function of solid angle, not only in its emission spectrum but also in other characteristics, in particular in its intensity profile.

[0035] In particular, at least two lenses focus the light emitted from each surface region of the LED chip so that it is deflected in different directions. This is especially advantageous in combination with a conversion material applied as a coating to the surface of the LED chip.

[0036] A further objective of the present invention is to improve lighting devices.

[0037] This objective is achieved by the lighting device described in claim 12. This lighting device has, in particular, at least one light-emitting device in the form of the aforementioned LED package. The advantages and optional features of this lighting device correspond to the advantages and optional features of the aforementioned device.

[0038] The lighting device may be a lighting fixture in particular, such as a lighting fixture for ambient lighting.

[0039] The lighting device may also be part of a projector, particularly for a head-up display, a beam projector, and / or data glasses.

[0040] The lighting device described in claim 13 is particularly suitable as part of a projector. The mirror arrangement may be a mirror array or a micromirror array. The mirrors in the mirror arrangement, particularly micromirrors or MEMS mirrors, allow light components from different solid angle subranges to be reoriented independently of each other. As a result, solid angle-dependent emission spectra can be flexibly and easily utilized in further technical applications, particularly in projectors. Larger mirror arrays can be used, particularly in stage lighting, for example, to create color mixtures or color gradients on a stage.

[0041] The lighting device described in claim 14 is particularly suitable for use with a projector. Different colors emitted in different solid angle subranges can be independently redirected and / or superimposed using their respective mirrors to generate an image.

[0042] The lighting device described in claim 15 is particularly suitable for use with a projector. By generating different primary colors from one or more color systems, it is possible to generate any color that can be represented in at least one color system by mixing with a mirror.

[0043] The lighting device described in claim 16 has a particularly wide displayable color gamut. By combining at least two color systems, for example, the RGB color system and the CMY color system, it is possible to accurately display colors across a wide color gamut. This lighting device is suitable, for example, for high-quality lighting fixtures, particularly for high-quality ambient lighting. In particular, by using the primary colors of at least two color systems, particularly attractive color gradients and / or effects can be achieved.

[0044] Particularly preferably, the primary colors of at least two color systems are assigned to each mirror in the mirror arrangement. In this way, the lighting device can be used, for example, as part of a projector to reproduce a wide color space with high quality.

[0045] Further features, advantages, and details of the present invention will become apparent from the following description of embodiments with reference to the drawings. [Brief explanation of the drawing]

[0046] [Figure 1] This is a schematic diagram showing a longitudinal cross-section of an embodiment of a light-emitting device having a solid angle-dependent emission spectrum. [Figure 2] This figure shows the dominant wavelength of the output spectrum as a function of angle in the cross-section of Figure 1. [Figure 3] This is a schematic diagram showing a longitudinal cross-section of another embodiment of the light-emitting device. [Figure 4] This is a schematic diagram showing a longitudinal cross-section of another embodiment of the light-emitting device. [Figure 5] This is a schematic diagram showing an embodiment of a lighting device. [Modes for carrying out the invention]

[0047] Corresponding parts, components, spectra, and / or other variables are denoted by the same reference numerals in Figures 1 to 5. Details of the exemplary embodiments described below may constitute the invention itself or part of the subject matter of the invention.

[0048] Figure 1 schematically shows a first embodiment of a light-emitting device 1 in the form of an LED package. The LED package 1 has a substrate 2 on which an LED chip 3 is arranged. On the side opposite to the substrate 2, the LED chip 3 is housed in a housing 4. The housing 4 may be configured in the form of a sealing portion. An emission surface 5 is formed on the surface of the housing 4 facing away from the LED chip 3, and the LED package 1 emits light through this emission surface 5.

[0049] In the illustrated embodiment, the LED chip 3, having a housing 4, is formed in a hemispherical shape. In the illustrated embodiment, the emission surface 5 is a hemisphere. Naturally, the shape of the emission surface can be other shapes, particularly ellipsoidal or complex lens structures. The LED chip 3 and LED package 1 emit light over an emission solid angle range A corresponding to the associated emission surface. In the illustrated embodiment, the emission solid angle range A corresponds to the hemisphere of the housing 4. Therefore, in the illustrated embodiment, the emission solid angle range A covers the entire solid angle above the substrate 2.

[0050] The LED chip 3 generates primary light P of the primary spectrum and emits it over the entire emission solid angle range A. The emission solid angle range A is the solid angle subrange T. i It is divided into the following. Here and below, the subscripts i=1, 2, ... are various solid angle subranges T i The diagram shows the components, light spectrum, and parameters associated with these components. In the illustrated embodiment, three solid angle subranges T are shown. i That is, T1, T2, and T3 (i=1, 2, 3) are shown. Solid angle subrange T i The elements are arranged rotationally symmetrically around the central axis 6. Solid angle sub-range T i They are optically separated from each other by the shielding section 7.

[0051] The light emitted through the emission surface 5 exhibits a solid angle-dependent emission spectrum. This is due to the different solid angle subranges T. i In the case of conversion member K i This is achieved by using [this method]. Therefore, the optical component Li of each output spectrum is within its respective solid angle subrange T i It will be assigned to.

[0052] In the solid angle sub-range T1, the enclosure 4 is formed by a light-transmitting, particularly optically transparent, sealing portion. In the solid angle sub-range T1, no conversion of the primary light P generated by the LED chip 3 occurs. Therefore, the light component L1 has a spectrum corresponding to the primary spectrum of the primary light P.

[0053] The conversion members K2 and K3 are positioned in solid angle sub-ranges T2 and T3, respectively. The conversion members K2 and K3 convert the primary light P into secondary light S2 and S3, respectively. i The LED chip 3 has a secondary spectrum that is different from its primary spectrum. Furthermore, the secondary spectra of secondary light S2 and secondary light S3 are different.

[0054] The conversion members K2 and K3 are formed from the light conversion material contained in the sealing portion. Different conversion members K i This includes different photoconversion materials and / or different concentrations and / or mixing ratios of one or more photoconversion materials. In the illustrated embodiment, conversion members K2 and K3 include different photoconversion materials. The corresponding photocomponents L2 and L3 are dominated by secondary light S2 and S3, respectively.

[0055] Light component L i The emitted spectra are different. In particular, the emitted spectra have different color stimulus specifications. This results in a color impression that depends on the solid angle of the emitted light.

[0056] In a specific, purely illustrative embodiment, the LED chip 3 generates blue light, for example, light with a dominant wavelength of 450 nm. Therefore, the light component L1 appears blue. The conversion member K2 converts the blue primary light P into green secondary light S2. Therefore, the light component L2 appears green. The conversion member K3 converts the blue primary light P into green secondary light S3. Therefore, the light component L3 appears green. Thus, the LED package 1 emits blue, green, and red light in different solid angle subranges T. i It is emitted to two adjacent solid angle subranges T. i and T j In the transition region between (in the illustrated embodiment, j=1,2,3 and j≠i), the emitted light component L i and L j The mixed light component L ij This forms a mixed light component L in the transition region between solid angle sub-regions T1 and T2, and between T2 and T3. Figure 1 shows the mixed light component L 12 and L 23This is shown as an example.

[0057] Refer to Figure 2 to further describe an example of the emission characteristics. Figure 2 shows the dominant wavelength λ over the projection angle r of the solid angle in the cross-section of Figure 1. The angle r is measured from the central axis 6. This results in a continuous color gradient from blue light along the central axis 6 to red light perpendicular to the central axis 6.

[0058] LED package 1 can be used, for example, in lighting devices, especially luminaires, and especially in ambient lighting. Its solid angle-dependent emission characteristics can also be used in technical applications, such as when different spectra, especially different colors, are advantageous for illuminating different (optical) components.

[0059] Figure 3 shows another embodiment of the light-emitting device 1a in LED package form. Components already described with reference to the embodiment in Figure 1 are given the same reference numerals, and detailed descriptions are omitted. Components that are functionally equivalent but structurally different are given the prefix "a" to their corresponding reference numerals.

[0060] The LED package 1a has a housing 4a, which, apart from the shielding portion 7, forms a light-transmitting, for example, optically transparent sealing portion. The conversion members Ka2 and Ka3 are applied directly to the LED chip 3 as coatings containing the corresponding light conversion material in solid angle sub-ranges T2 and T3, respectively.

[0061] Figure 4 schematically shows another embodiment of the LED package light-emitting device 1b. Components described with reference to the prior embodiment are given the same reference numerals, and detailed descriptions are omitted. Components that are functionally equivalent but structurally different are indicated by adding "b" to their corresponding reference numerals.

[0062] In the LED package 1b, the conversion members Ka2 and Ka3 are similarly formed by a coating on the LED chip 3. The housing 4b has a solid angle portion T i Lens F assigned toi In other words, in this particular embodiment, there are lenses F1, F2, and F3. For example, a housing 4b having the form of a sealing portion and its exit surface 5b form a multi-lens. Lens F i These are, respectively, focal length f i It has. Lens F i The arrangement is as follows: i The light rays emitted from within are selected to be focused onto the corresponding surface area of ​​the LED chip 3. This allows each light component L to be focused without the need for shielding or other shielding. i It becomes possible to separate them. As an option, lens F i The emission pattern, especially the emission intensity, can also be adjusted using this method.

[0063] The multi-lens housing 4b can be easily applied to the substrate 2 and LED chip 3 during manufacturing. For example, by applying a shielding structure and filling gaps, the need to individually manufacture housings for different solid angle ranges is avoided.

[0064] Figure 5 shows one embodiment of the lighting device 10. The lighting device 10 may be, for example, part of a projector, particularly for a head-up display and / or data glasses.

[0065] The lighting device 10 comprises a plurality of LED packages 11 having solid angle-dependent emission spectra implemented according to the principle described above. The LED packages 11 form two solid angle sub-ranges T1 and T2, and their light components have emission spectra with different color stimulus specifications.

[0066] In the illustrated embodiment, three LED packages 11 are shown. These three LED packages 11 are responsible for emitting the three primary colors of two different color systems. In other lighting devices not shown, multiple LED packages 11 may be provided. In particular, multiple groups of LED packages 11, each emitting the corresponding primary colors of two color systems, may be provided.

[0067] Different LED packages 11 emit different primary colors of the first color system in one of their respective solid angle subranges T1. In other solid angle subranges T2, the various LED packages 11 emit different primary colors of the second color system. In the illustrated embodiment, the LED packages 11 emit the primary colors of the RGB and CMY color systems, i.e., blue, green, and red, and cyan, magenta, and yellow, respectively. For example, the LED package 11 shown on the left in Figure 5 emits blue (B) and cyan (C), which are the primary colors of their respective color systems; the LED package 11 in the center emits green (G) and yellow (Y), which are the primary colors; and the LED package 11 on the right emits red (R) and magenta (M), which are the primary colors. Of course, other combinations and / or assignments of primary colors to the LED packages 11 are also possible.

[0068] Let's explain the generation of the primary colors red (R) and magenta (M) in the LED package 11 on the right as an example. The LED chip generates primary blue light. In the solid angle sub-range T2, the concentration of the light conversion material that converts primary blue light to red light is low. Magenta (M) is generated by mixing the primary blue light with the converted red light. In the solid angle sub-range T1, the light conversion material is present at a high concentration and completely converts primary blue light to red light.

[0069] Using two color systems has the advantage of covering a wider color space using the lighting device 10. By using LED packages 11, the number of LED packages 11 required for this purpose can be reduced, and consequently, costs can be reduced.

[0070] The lighting device 10 has a mirror arrangement 12 in the form of a micromirror array (MEMS mirror array). Each LED package 11 has two mirrors M1 and M2 assigned to solid angle sub-ranges T1 and T2, respectively. i By using this, for example, the solid angle subrange T corresponding to the primary colors of each of the two color systems can be calculated. i The light components can be redirected independently of each other. As a result, individual primary colors can be controlled independently of each other, enabling the realization of desired color mixing.

[0071] Figure 5 shows a micromirror array used, for example, in projectors, particularly head-up displays. In other embodiments, the mirror array can be used for structurally larger applications. For example, the corresponding lighting device can be used for stage lighting, in particular for easily and accurately generating color mixtures and color gradients for stage lighting. [Explanation of Symbols]

[0072] 1. Light-emitting device (LED package) 2 circuit boards 3 LED chips 4, 4a, 4b Housing 5, 5b Output surface 6 center axis 7 Shielding part 10 Lighting devices 11 LED package 12 Mirror arrangement A. Solid angle emission range F1, F2 lenses K2, K3, Ka2, Ka3, K i Conversion member L1 light component L 12 , Lij mixed light component L2, L3, L i Light components M1, M2, M i mirror P primary light S2, S3, S i secondary light T1, T2, T i Solid angle sub-range f i focal length

Claims

1. Light-emitting devices, particularly LED packages, At least one LED chip (3) generates primary light (P) of a primary spectrum, and the primary light (P) is emitted over the emission solid angle range (A) of the light-emitting device (1; 1a; 1b; 11), The primary light (P) is used to obtain secondary light (S) with a secondary spectrum different from the primary spectrum. ｉ At least one conversion member (K) for converting to ｉ ;Ka ｉ ) equipped with, The at least one conversion member (K ｉ ;Ka ｉ ) is the solid angle subrange (T) of the emission solid angle range (A). ｉ A light-emitting device that covers only the ), thereby causing the emission spectrum of the light-emitting device (1; 1a; 1b; 11) to be solid angle dependent.

2. The aforementioned emission spectrum has different solid angle subranges (T ｉ The light-emitting device according to claim 1, characterized in that it has different color stimulus specifications in ).

3. At least two conversion members (K ｉ ; Ka ｉ ), which cover different solid angle partial ranges (T ｉ ) of the emission solid angle range (A), are provided, and the secondary spectra of the at least two conversion members (K ｉ ; Ka ｉ ) are different, and particularly have different color stimulus specifications. The light-emitting device according to claim 1 or 2.

4. Different conversion members (K ｉ ;Ka ｉ The light-emitting device according to claim 3, characterized in that it comprises different light-converting materials and / or different concentrations of at least one light-converting material.

5. The light-emitting device according to any one of claims 1 to 4, characterized in that the at least one LED chip (3) is provided with a light-transmitting encapsulation portion in which it is at least partially enclosed.

6. The light-emitting device according to claim 5, characterized in that the light-transmitting sealing portion is made of glass and / or a light-transmitting resin, particularly a silicone resin and / or an epoxy resin.

7. The at least one conversion member (K ｉ ;Ka ｉ The light-emitting device according to claim 5 or 6, characterized in that the at least one LED chip (3) is embedded within the sealing portion.

8. The at least one conversion member (K ｉ ;Ka ｉ The light-emitting device according to any one of claims 1 to 7, characterized in that the coating is applied as a coating to a partial area of ​​the surface of at least one LED chip (3).

9. Different solid angle subranges (T) of the aforementioned emission solid angle range (A) ｉ The light-emitting device according to any one of claims 1 to 8, characterized in that the elements are optically separated from each other and, in particular, optically shielded.

10. Two solid angle subranges (T ｉ It is positioned between the two solid angle subranges (T ｉ The light-emitting device according to any one of claims 1 to 9, characterized by comprising at least one shielding part (7) that optically separates, and in particular optically shields, the light-emitting device.

11. Each solid angle sub-range (T ｉ At least two lenses (F) are arranged to concentrate the light from the F ｉ A light-emitting device according to any one of claims 1 to 10, particularly according to claim 8, characterized by comprising ).

12. A lighting device comprising at least one light-emitting device (11) according to any one of claims 1 to 11.

13. Mirror arrangement (12), particularly comprising a micromirror array, At least two mirrors (M ｉ ) a different solid angle subrange (T) of the emission solid angle range (A) of one of the at least one light-emitting devices (11) having a different emission spectrum ｉ The lighting device according to claim 12, characterized in that it is assigned to ).

14. The at least one light-emitting device (11) has different mirrors (M ｉ The lighting device according to claim 13, characterized in that each of the ) has an output spectrum with different color stimulus specifications in the solid angle subrange (T) to which each is assigned.

15. The aforementioned different solid angle subrange (Ta ｉ The lighting device according to claim 14, characterized in that the aforementioned color stimulus specifications correspond to one or more different primary colors (R, G, B, C, M, Y) of a color system.

16. The lighting device according to any one of claims 12 to 15, characterized by comprising a plurality of light-emitting devices (11) for generating the primary colors (R, G, B, C, M, Y) of at least two color systems.

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