Radiation-emitting device and method for producing a radiation-emitting device

Abstract

A device for emitting radiation is proposed, comprising a plurality of emitters (1) and a plurality of optical elements (2), wherein the emitters are arranged along a first emitter direction (dE1) with a first average emitter spacing AE1 and along a second emitter direction (dE2) extending obliquely to or perpendicular to the first emitter direction with a second average emitter spacing AE2, and wherein the optical elements are arranged along a first optical direction (dO1) with a first average optical spacing AO1 and along a second optical direction (dO2) extending obliquely to or perpendicular to the first optical direction with a second average optical spacing AO2, and wherein... At least one of the following four conditions must be satisfied: (i) NE1*AE1*cosφ=m2*AO1, (ii) NE2*AE2*sinφ=m4*AO1, (iii) NE1*AE1*sinφ=m1*AO2, and (iv) NE2*AE2*cosφ=m3*AO2, where NE1 is the number of transmitters along the first transmitter direction, NE2 is the number of transmitters along the second transmitter direction, φ is the angle between the first transmitter direction and the first optical direction, and m1, m2, m3, and m4 are factors. Furthermore, a method for manufacturing an apparatus for emitting radiation is proposed, the apparatus having a plurality of transmitters and a plurality of optical elements.

Description

Technical Field

[0001] This application relates to a device for emitting radiation and a method for manufacturing such a device. Background Technology

[0002] For various applications, such as in sensor devices, it is essential to uniformly illuminate the target surface. To achieve this, a module with multiple emitters, each possessing an associated lens field, can be used. However, interference or diffraction effects can result in uneven illumination of the target surface. Summary of the Invention

[0003] The purpose of this invention is to achieve uniform illumination in a simplified manner.

[0004] The stated objective is achieved, in particular, by means of a device or method for emitting radiation according to the invention. Other design options and suitable embodiments are the subject of the following description.

[0005] A device for emitting radiation with multiple transmitters and multiple optical elements is proposed.

[0006] The optical element is suitably positioned downstream of the transmitter along the main radiation direction, such that the optical element shapes the radiation emitted by the transmitter. For example, the transmitter and the optical element are positioned in two planes that extend parallel to each other.

[0007] The transmitter can be set up in a transmitter field. Optical elements can be set up in an optical field.

[0008] According to at least one embodiment of the radiation-emitting device, the transmitters are arranged along a first transmitter direction at a first average transmitter spacing AE1. The spacing here refers to the center-to-center distance between adjacent transmitters. The average transmitter spacing is a center-to-center distance at which the transmitters are located along the first transmitter direction. The transmitters can be regularly arranged such that the transmitter spacing between adjacent transmitters is equal. The first transmitter direction extends obliquely to or perpendicular to the main radiation direction of the transmitter, preferably perpendicular to the main radiation direction.

[0009] According to at least one embodiment of the radiation-emitting device, the transmitters are arranged along a second transmitter direction that extends obliquely to or perpendicular to the first transmitter direction at a second average transmitter spacing AE2. The transmitters can be arranged regularly along the second transmitter direction. The second transmitter direction extends obliquely to or perpendicular to the main radiation direction of the transmitter, preferably perpendicular to the main radiation direction. For example, a transmitter field is formed by the first and second transmitter directions, and the transmitters are arranged in said transmitter field, particularly in a common transmitter plane.

[0010] For example, the number of transmitters along the direction of the first transmitter and / or along the direction of the second transmitter is at least 5 or at least 10.

[0011] According to at least one embodiment of the radiation-emitting device, optical elements are arranged along a first optical direction with a first average optical spacing AO1. Here, the optical spacing represents the center-to-center distance between two adjacent optical elements. The optical elements may, however, not necessarily must, be arranged regularly along the first optical direction.

[0012] According to at least one embodiment of the radiation-emitting device, optical elements are arranged along a second optical direction that extends obliquely to or perpendicular to the first optical direction at a second average optical spacing AO2. The optical elements may, however, not necessarily must, be arranged regularly along the second optical direction.

[0013] For example, an optical field is deployed in a first optical direction and a second optical direction, and optical elements are arranged in the optical field, especially in a common optical plane.

[0014] For example, the number of optical elements along the first optical direction and / or along the second optical direction is at least 5 or at least 10.

[0015] Suitably, the number of optical elements along the first optical direction is different from the number of transmitters along the first transmitter direction, and / or the number of optical elements along the second optical direction is different from the number of transmitters along the second transmitter direction.

[0016] The optical field and the emitter field are preferably parallel to each other or at least substantially parallel to each other, for example, extending with a deviation of up to 10°.

[0017] Optical elements are, for example, lenses, especially microlenses. For instance, the lateral extension of individual optical elements, i.e., the extension along the optical field, is a maximum of 100 μm or a maximum of 80 μm and / or at least 10 μm or at least 20 mm. Lateral extension here refers to the maximum extension, for example, the diameter in the case where the optical element has a circular base with respect to the optical plane.

[0018] According to at least one embodiment of the radiation-emitting device, the first emitter direction and the first optical direction are set relative to each other at an angle φ. The angle between the second emitter direction and the second optical direction may be equal to or different from angle φ.

[0019] For an angle φ = 0, the first transmitter direction and the first optical direction extend parallel to each other.

[0020] According to at least one embodiment of the device for emitting radiation, the following conditions apply:

[0021] (i) NE1*AE1*cosφ = m2*AO1.

[0022] Here, NE1 is the number of transmitters along the first transmitter direction, and m2 is a factor. Therefore, the condition establishes a relationship between the average spacing AE1 of the transmitters along the first transmitter direction and the average spacing AO1 of the optical elements along the first optical direction. Specifically, the product of the number of transmitters NE1 along the first transmitter direction and the average spacing AE1 along that direction is projected onto the first optical direction. This product corresponds here to the lateral extension of the transmitter field along the first transmitter direction. Thus, for the special case φ = 0, i.e., when the first transmitter direction and the first optical direction overlap, a simplified relationship NE1*AE1 = m2*AO1 is derived.

[0023] According to at least one embodiment of the radiation-emitting device, the following conditions apply.

[0024] (ii) NE2*AE2*sinφ = m4*AO1.

[0025] Here, NE2 is the number of transmitters along the direction of the second transmitter, and m4 is a factor. For the special case φ = 0, we get m4 = 0.

[0026] According to at least one embodiment of the radiation-emitting device, the following conditions apply.

[0027] (iii) NE1*AE1*sinφ = m1*AO2.

[0028] In the special case φ = 0, we get m1 = 0.

[0029] According to at least one embodiment of the radiation-emitting device, the following conditions apply.

[0030] (iv) NE2*AE2*cosφ = m3*AO2.

[0031] Here, m3 is a factor. That is, the condition establishes a relationship between the average spacing AE2 of the transmitters along the second transmitter direction and the average spacing AO2 of the optical elements along the second optical direction. Specifically, the product of the number of transmitters NE2 along the second transmitter direction and the average spacing AE2 along that direction is projected onto the second optical direction. This product corresponds here to the lateral extension of the transmitter field along the first transmitter direction. For the special case φ = 0, the simplified relationship NE2*AE2 = m3*AO2 applies.

[0032] In at least one embodiment of the radiation-emitting device, the radiation-emitting device has a plurality of emitters and a plurality of optical elements, wherein the emitters are arranged along a first emitter direction with a first average emitter spacing AE1 and along a second emitter direction extending obliquely to or perpendicular to the first emitter direction with a second average emitter spacing AE2. The optical elements are arranged along a first optical direction with a first average optical spacing AO1 and along a second optical direction extending obliquely to or perpendicular to the first optical direction with a second average optical spacing AO2, and satisfy at least one of the following four conditions:

[0033] (i) NE1*AE1*cosφ = m2*AO1,

[0034] (ii) NE2*AE2*sinφ = m4*AO1,

[0035] (iii) NE1*AE1*sinφ = m1*AO2,

[0036] (iv) NE2*AE2*cosφ = m3*AO2,

[0037] Where NE1 is the number of transmitters along the first transmitter direction, NE2 is the number of transmitters along the second transmitter direction, φ is the angle between the first transmitter direction and the first optical direction, and m1, m2, m3 and m4 are factors.

[0038] The average transmitter spacing AE1 is preferably different from the first average optical spacing AO1. Furthermore, it is preferable that the second average transmitter spacing AE2 is different from the second average optical spacing AO2.

[0039] In case of doubt, the optical direction with a small angle relative to the direction of the first transmitter can be regarded as the first optical direction.

[0040] The following arrangement of the transmitter and optical elements can be achieved by satisfying at least one of the four conditions (i) to (iv), wherein the risk of non-uniformity when illuminating the target object is reduced. It has been demonstrated that unintentional patterns caused by interference effects during illumination can be effectively suppressed.

[0041] Furthermore, these conditions enable a systematic, non-random or non-pseudo-random relative arrangement of transmitters and optical elements along one or more directions, while the relative arrangement of individual transmitters and associated optical elements along their respective optical directions is non-repetitive. The uniformity of illumination is also improved compared to random or pseudo-random arrangements.

[0042] According to at least one embodiment of the radiation-emitting device, at least two of the conditions (i) to (iv) are satisfied. In particular, all four conditions may also be satisfied simultaneously.

[0043] According to at least one embodiment of the radiation-emitting device, factors m1, m2, m3, and m4 are respectively most significantly different from the nearest integer by a deviation fraction, wherein the value of the deviation fraction is between 0 and 0.05, including boundary values. In other words, factors m1 to m4 are respectively most significantly less than or greater than the nearest integer by a margin of 0.05. Preferably, the deviation fraction is equal to 0. Therefore, the nearest integer to the corresponding factor is equal to the factor in this case.

[0044] According to at least one embodiment of the radiation-emitting device, at least one of the following conditions is satisfied:

[0045] (v) The nearest integer to the factor m2 is coprime to NE1;

[0046] (vi) The nearest integer to the factor m4 is coprime to NE2;

[0047] (vii) The nearest integer to factor m1 is coprime to NE2;

[0048] (viii) The nearest integer to the factor m3 is coprime to NE1.

[0049] Coprime here means that related numbers, such as m2 and NE1, do not share a common prime factor. This simplifies the avoidance of repetition in the relative arrangement of the emitter and the optical element illuminated by the emitter along a first and / or second optical direction within the emitting radiation device. In particular, if the emitter and optical element are regularly arranged along this direction, the relative arrangement of the emitter and the associated optical emitter within the emitting radiation device also does not repeat.

[0050] In particular, at least two, such as three or all four conditions (v) to (viii) can be satisfied.

[0051] According to at least one embodiment of the radiation-emitting device, NE1 and / or NE2 are prime numbers. This simplifies to the guarantee that NE1 is coprime with m2 and m3, provided that m2 and m3 are not integer multiples of NE1. Similarly, NE2 is coprime with m4 and m1, provided that m1 and m4 are not integer multiples of NE2.

[0052] According to at least one embodiment of the radiation-emitting device, NE1 = NE2 applies. Therefore, the number of transmitters along the first transmitter direction is equal to the number of transmitters along the second transmitter direction.

[0053] According to at least one embodiment of the radiation-emitting device, φ = 0° is applicable. Therefore, the first emitter direction and the first optical direction extend parallel to each other.

[0054] According to at least one embodiment of the radiation-emitting device, the transmitter is arranged in a rectangular grid. Therefore, the first transmitter direction and the second transmitter direction extend perpendicularly to each other.

[0055] According to at least one embodiment of the radiation-emitting device, the emitter is disposed in a hexagonal grid. The hexagonal grid can be a regular hexagonal grid or a hexagonal grid compressed or stretched along one direction.

[0056] According to at least one embodiment of the radiation-emitting device, the spacing between adjacent transmitters along a first transmitter direction differs from the first average transmitter spacing by a maximum of 20% or a maximum of 10%. This preferably applies similarly to the spacing between adjacent transmitters along a second transmitter direction. Preferably, the spacing between adjacent transmitters along one transmitter direction is the same.

[0057] According to at least one embodiment of the radiation-emitting device, the emitter is a surface-emitting semiconductor laser or a light-emitting diode. The main emission direction of the emitter extends, for example, perpendicular to the emitter plane, and the emitters are arranged side-by-side in the emitter plane. For example, the emitter is a surface-emitting semiconductor laser with a vertical cavity, abbreviated as VCSEL, which stands for Vertical Cavity Surface Emitting Laser. The individual emitters can be integrated into a common semiconductor device, particularly integrally integrated into a common semiconductor body. This allows for particularly small emitter spacing, especially a particularly small intermediate space between adjacent emitters.

[0058] According to at least one embodiment of the radiation-emitting device, optical elements are disposed within a connected optical composite. Therefore, the optical elements are not separate, spaced apart elements, but rather sub-regions of a common optical composite. This simplifies the manufacture of the radiation-emitting device and the positioning of the optical elements relative to the emitter.

[0059] Furthermore, a method for manufacturing an apparatus that emits radiation is proposed. This method is particularly suitable for manufacturing the aforementioned apparatus that emits radiation. The features listed in connection with the apparatus that emits radiation can therefore also be used in the method, and vice versa.

[0060] In at least one embodiment of a method for manufacturing an apparatus for emitting radiation having multiple emitters and multiple optical elements, the method includes the following steps:

[0061] a) Determine the configuration with the number and location of the transmitter and optical elements, such that

[0062] - The transmitter is positioned along a first transmitter direction with a first average transmitter spacing AE1 and along a second transmitter direction that extends at a second average transmitter spacing AE2, which is inclined to or perpendicular to the first transmitter direction;

[0063] - Optical elements are arranged along a first optical direction (dO1) with a first average optical spacing AO1 and along a second optical direction (dO2) extending at or perpendicular to the first optical direction with a second average optical spacing AO2; and

[0064] - Meets at least one of the following four conditions:

[0065] (i) NE1*AE1*cosφ = m2*AO1,

[0066] (ii) NE2*AE2*sinφ = m4*AO1,

[0067] (iii) NE1*AE1*sinφ = m1*AO2,

[0068] (iv) NE2*AE2*cosφ = m3*AO2,

[0069] Where NE1 is the number of transmitters along the first transmitter direction, NE2 is the number of transmitters along the second transmitter direction, φ is the angle between the first transmitter direction and the first optical direction, and m1, m2, m3, and m4 are factors; and

[0070] b) To construct a device that emits radiation according to a defined structure.

[0071] Therefore, when manufacturing a device that emits radiation, the arrangement of the emitter and optical elements is specifically coordinated with each other to achieve improved uniformity when illuminating the target object.

[0072] The number of optical elements and emitters along the first optical direction or the first emitter direction, and the first average optical spacing and the first average emitter spacing are particularly different from each other, such that a 1:1 correlation does not occur between optical elements and emitters along the said direction. Attached Figure Description

[0073] Other design options and suitable solutions can be derived from the following description of the embodiments in conjunction with the accompanying drawings.

[0074] The attached diagram shows:

[0075] Figure 1 A schematic diagram of a device that emits radiation is shown;

[0076] Figure 2A A top view showing the location of the transmitter;

[0077] Figure 2B The relevant views of the optical components are shown;

[0078] Figure 2C A related view showing the transmitter position folded back onto the optical element;

[0079] Figures 3A to 3C A reference example is shown, in Figure 3A The location of the transmitter is shown in the image. Figure 3B The position of the optical element is shown in the diagram. Figure 3C The location of the relevant folded-back transmitter is shown in the image;

[0080] Figure 4A A top view showing the location of the transmitter;

[0081] Figure 4B A related view showing the position of the optical elements;

[0082] Figure 4C A related view showing the transmitter position folded back onto the optical element;

[0083] Figures 5A to 5C A reference example is shown in Figure 5A The location of the transmitter is shown in the image. Figure 5B The position of the optical element is shown in the diagram. Figure 5C The location of the relevant folded-back transmitter is shown in the diagram; and

[0084] Figure 6 An embodiment of a method for manufacturing a device that emits radiation is shown. Detailed Implementation

[0085] The accompanying drawings are schematic diagrams and are not to scale unless otherwise explained in detail. Identical, identical, or functional elements are given the same reference numerals in the drawings.

[0086] exist Figure 1The diagram below shows a radiation-emitting device 100 in a highly simplified manner. The radiation-emitting device has multiple emitters 1. The emitters are arranged in an emitter field 10, for example, in the form of individually operable generators, which are integrated integrally into a semiconductor body as VCSELs or light-emitting diodes. However, each emitter can also be a separate, individually operable device. The number of emitters 1 can vary widely, particularly in relation to the desired illumination of the target object 9. For example, the radiation-emitting device 100 has between 50 and 10,000 emitters, including boundary values.

[0087] The radiation-emitting device 100 also has multiple optical elements 2, such as an optical field 20 in the form of an optical composite 25. The number of optical elements 2 is particularly different from the number of emitters. This means that the emitters 1 are not associated with exactly one optical element 2 in a 1:1 ratio.

[0088] exist Figures 2A to 2C A specific example is shown, in which 29 transmitters are arranged in a matrix in a transmitter field along a first transmitter direction dE1 and 29 transmitters are arranged along a second transmitter direction dE2. The first transmitter direction dE1 and the second transmitter direction dE2 are perpendicular to each other, such that the transmitters are arranged in a regular rectangular grid. Along the first transmitter direction dE1, the transmitters are arranged with a first average transmitter spacing AE1 of 40 μm. The lateral expansion of the transmitter field 10 along the first transmitter direction dE1 is derived from the product of the first average transmitter spacing AE1 and the number of transmitters along that direction, i.e., 29. Along the second transmitter direction dE2, transmitters 1 are arranged with a second average transmitter spacing AE2 of 34.64 μm. The lateral expansion along the second transmitter direction is derived from the product of the second average transmitter spacing AE2 and the number of transmitters along that direction, i.e., 29.

[0089] It goes without saying that the deviation of the second average transmitter spacing AE2 from the example shown can also be greater than or equal to the first average transmitter spacing AE1.

[0090] exist Figure 2B The optical element 2 shown is arranged along the first optical direction dO1 with a first average optical spacing AO1 of 37.42 μm. Along the second optical direction dO2, the optical element 2 is arranged with a second optical spacing of 43.68 μm.

[0091] The points are the midpoints of optical element 2.

[0092] The first transmitter direction dE1 and the first optical direction dO1 overlap, therefore the applicable angle between these directions is: φ=0.

[0093] From the above condition (i), we get: NE1*AE1 = 31*dO1, and from relation (iv), we get: NE2*AE2 = 23*dO2. The numbers m2 = 31 and NE1 = 29 are therefore coprime. Correspondingly, the numbers m3 = 23 and NE2 = 29 are also coprime.

[0094] In this embodiment, the same number of transmitters are provided along the first transmitter direction dE1 and along the second transmitter direction dE2, but this is not necessary.

[0095] The number of transmitters along the transmitter direction is a prime number. The factors m2 and m3 are integers. Integers, especially those coprime to the corresponding number of transmitters along the relevant direction, have proven particularly advantageous. However, small positive or negative deviations of the factors from the integers are also permissible, preferably with a deviation share of up to 0.05. For example, 30.95 ≤ m2 ≤ 31.05 can be applied.

[0096] exist Figure 2C The image shows the emitter position 15 folded back into optical element 2. The folded-back emitter position 15 can be determined by means of... Figure 2A The absolute emitter position is determined by the difference between the corresponding average optical spacing and the next smaller integer multiple of the numerical value. From Figure 2C It is found that the reflected emitter positions 15 are uniformly distributed above the optical elements. This results in the illumination of the target object 9 being particularly uniform. The repetitive relative relationship between the optical element 2 and its associated emitter 1 above the optical field 20 is represented by clusters of points in the reflected diagram.

[0097] As a reference example, in view Figures 3A to 3C The diagram shows a variant in which the number of transmitters along the first transmitter direction and the number of transmitters along the second transmitter direction, as well as the spacing along said directions, are related to the... Figures 2A to 2C The same applies to the embodiment shown. The difference is that the first average optical spacing AO1 = 29.5 μm and the second average optical spacing AO2 = 39.5 μm. This yields a value of 29.3 for factor m2 and a value of 25.4 for factor m3. Therefore, factors m2 and m3 differ from the nearest integer by 0.3 or 0.4.

[0098] Therefore, these values ​​deviate significantly from the nearest natural number. Figure 3C As is clear from the returned emitter position 15, the emitter positions are unevenly distributed above the optical element 2. This results in uneven illumination of the target object 9.

[0099] exist Figures 4A to 4CThe embodiment shown illustrates a general case where the transmitter 1 and optical element 2 are arranged in a regular grid, wherein the grid is twisted relative to each other at an angle φ. Exemplarily, the angle φ between the first transmitter direction dE1 and the second optical direction dO is 5.5°. Similarly, the same angle is obtained between the second transmitter direction dE2 and the second optical direction dO2.

[0100] The number of transmitters 1 along the directions of the first and second transmitters and the spacing between transmitters 1 are respectively as follows: Figures 2A to 2C Implement it as described.

[0101] A value of 32.07 μm is chosen for the first average optical spacing AO1, and a value of 37.04 μm is chosen for the second optical spacing AO2. The following relationship is derived accordingly.

[0102] (i) NE1*AE1*cosφ = 36*AO1,

[0103] (ii) NE2*AE2*sinφ = 3*AO1,

[0104] (iii) NE1*AE1*sinφ = 3*AO2, and

[0105] (iv) NE2*AE2*cosφ = 27*AO2.

[0106] Therefore, for factors m1 = 3, m2 = 36, m3 = 27, and m4 = 3, natural numbers are derived, which are also coprime to the number of transmitters along the two transmitter directions. Figure 4C The image also shows the folded-back emitter positions 15 in optical element 2. A uniform arrangement of these folded-back emitter positions 15 is obtained.

[0107] exist Figures 5A to 5C The text also shows a reference example, which is related to... Figures 4A to 4C The described embodiments differ, with AO1 = 34 μm chosen for the first average optical spacing and AO2 = 39 μm chosen for the second average optical spacing. Thus, the following values ​​are obtained for factors m1 to m4 in relations (i) to (iv): m2 = 33.8, m4 = 4.1, m1 = 4.1 and m3 = 25.5.

[0108] Therefore, the factors deviate significantly from natural numbers. According to Figure 5C It is evident that the returned emitter position 14 is in a highly uneven setting with a clear striped pattern in this case. This results in uneven illumination of the target surface.

[0109] In the illustrated embodiment, the transmitter 1 and the optical element 2 are respectively arranged in a regular rectangular grid. However, unlike this, other arrangements can also be applied to the transmitter and / or optical element, such as a hexagonal arrangement. Furthermore, the transmitter can also be arranged in a hexagonal arrangement and the optical element in a rectangular arrangement, or vice versa.

[0110] The hexagonal arrangement of transmitter 1 is in Figure 3A For example, this is obtained when transmitters 1 are staggered in every other row by half of the first average transmitter spacing AE1, because the following relationship applies to the second average transmitter spacing AE2:

[0111] .

[0112] exist Figure 6 The diagram schematically illustrates a method for manufacturing an apparatus that emits radiation. Here, in step S1, a configuration is determined having the number and position of emitters 1 and optical elements 2, such that the emitters are arranged along a first emitter direction dE1 with a first average emitter spacing AE1 and along a second emitter direction dE2 extending at or perpendicular to the first emitter direction dE1 with a second average emitter spacing AE2. The optical elements 2 are arranged along a first optical direction dO1 with a first average optical spacing AO1 and along a second optical direction dO2 extending at or perpendicular to the first optical direction dO1 with a second average optical spacing AO2.

[0113] This is specifically made so that in relations (i) to (iv), integer values ​​are obtained for factors m1, m2, m3 and m4, or at least numbers with small deviations from the nearest integer, i.e., small deviations of up to 0.05 in numerical value.

[0114] Preferably, the number of transmitters along the first transmitter direction and the number of transmitters along the second transmitter direction are chosen to be prime numbers, such that the factors m1, m2, m3 and m4 are themselves or at least rounded to integers coprime with the number of transmitters.

[0115] However, it is not necessary to satisfy all conditions (i) to (iv). Improved uniformity of illumination has been achieved when at least one of the conditions is satisfied, especially when one or more of the aforementioned conditions (v) to (viii) are satisfied.

[0116] Next, the device for emitting radiation can be manufactured in step S2 according to the previously determined structure.

[0117] The described method allows for the coordination of the spacing between the emitters and the optical elements, resulting in uniform illumination of the target object, such as a flat surface or a three-dimensional object, such as a human face. In particular, the repetitive relative arrangement between the optical elements and the emitters can prevent undesirable patterns caused by interference during illumination.

[0118] This application claims priority to German patent application 10 2020 104 522.0, the disclosure of which is incorporated herein by reference.

[0119] This invention is not limited by the description based on the embodiments. Rather, the invention includes any new features and any combination of features, particularly any combination of features in the embodiments, even if these features or combinations are not described in detail in the embodiments.

Claims

1. A device (100) for emitting radiation, comprising a plurality of emitters (1) and a plurality of optical elements (2), wherein - The transmitter is arranged along a first transmitter direction (dE1) with a first average transmitter spacing AE1 and along a second transmitter direction (dE2) that is inclined to or perpendicular to the first transmitter direction with a second average transmitter spacing AE2. - The optical element is arranged along a first optical direction (dO1) with a first average optical spacing AO1 and along a second optical direction (dO2) that extends inclined to or perpendicular to the first optical direction with a second average optical spacing AO2; and - Meets at least one of the following four conditions: (i) NE1*AE1*cosφ = m2*AO1, (ii) NE2*AE2*sinφ = m4*AO1, (iii) NE1*AE1*sinφ = m1*AO2, (iv) NE2*AE2*cosφ = m3*AO2, in - NE1 is the number of transmitters along the direction of the first transmitter. - NE2 is the number of transmitters along the direction of the second transmitter. - φ is the angle between the first transmitter direction and the first optical direction, and m1, m2, m3, and m4 are factors, - The first emitter direction (dE1) and the first optical direction (dO1) do not extend parallel to each other.

2. The device for emitting radiation according to claim 1, Among them, at least two of the conditions (i) to (iv) are satisfied.

3. The device for emitting radiation according to claim 2, The factors m1, m2, m3 and m4 are respectively the largest deviation shares from the nearest integer to the corresponding factor, and the values ​​of the deviation shares are between 0 and 0.05, including boundary values.

4. The device for emitting radiation according to claim 3, At least one of the following conditions must be met: (v) The nearest integer to the factor m2 is coprime to NE1; (vi) The nearest integer to the factor m4 is coprime to NE2; (vii) The nearest integer to factor m1 is coprime to NE2; (viii) The integers adjacent to the factor m3 are coprime to NE1.

5. The device for emitting radiation according to claim 4, Among them, at least two of the conditions (v) to (viii) are satisfied.

6. The device for emitting radiation according to any one of claims 1 to 5, Among them, NE1 and / or NE2 are prime numbers.

7. The device for emitting radiation according to any one of claims 1 to 5, Where NE1 = NE2.

8. The device for emitting radiation according to any one of claims 1 to 5, The transmitter is positioned within a rectangular grid.

9. The device for emitting radiation according to any one of claims 1 to 5, The transmitter is arranged in a hexagonal grid.

10. The device for emitting radiation according to any one of claims 1 to 5, The spacing between adjacent transmitters along the direction of the first transmitter differs from the first average transmitter spacing by up to 20%.

11. The device for emitting radiation according to any one of claims 1 to 5, The emitter is a surface-emitting semiconductor laser or a light-emitting diode.

12. The device for emitting radiation according to any one of claims 1 to 5, The optical element is disposed in the connected optical composite (25).

13. A method for manufacturing a radiation-emitting device according to any one of claims 1 to 12, the radiation-emitting device having a plurality of emitters and a plurality of optical elements, the method comprising the steps of: a) Determine the configuration having the number and position of the transmitter and the optical elements, such that - The transmitter is arranged along a first transmitter direction (dE1) with a first average transmitter spacing AE1 and along a second transmitter direction (dE2) that is inclined to or perpendicular to the first transmitter direction with a second average transmitter spacing AE2. - The optical element is arranged along a first optical direction (dO1) with a first average optical spacing AO1 and along a second optical direction (dO2) that extends inclined to or perpendicular to the first optical direction with a second average optical spacing AO2; and - Meets at least one of the following four conditions: (i) NE1*AE1*cosφ = m2*AO1, (ii) NE2*AE2*sinφ = m4*AO1, (iii) NE1*AE1*sinφ = m1*AO2, (iv) NE2*AE2*cosφ = m3*AO2, in - NE1 is the number of transmitters along the direction of the first transmitter. - NE2 is the number of transmitters along the direction of the second transmitter. - φ is the angle between the first transmitter direction and the first optical direction, and m1, m2, m3, and m4 are factors, and - The first emitter direction (dE1) and the first optical direction (dO1) do not extend parallel to each other; and b) To construct the device for emitting radiation according to the determined structure.

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