Light-emitting element array and optical transceiver system having same

Abstract

A light-emitting element array includes a first light-emitting element, a second light-emitting element and a third light-emitting element. The first beam shaping layer of the first light-emitting element is configured to convert light emitted by the first light-emitting structure of the first light-emitting element into first structured light. The second beam shaping layer of the second light-emitting element is configured to convert light emitted by the second light-emitting structure of the second light-emitting element into second structured light. And light spot patterns and spatial distribution of the first structured light and the second structured light on the projection plane are the same. A third beam shaping layer of the third light-emitting element is configured to convert light emitted by a third light-emitting structure of the third light-emitting element into third structured light. And light spot patterns and spatial distribution of the third structured light and the first structured light on the projection plane are different. The light-emitting element array can emit structured light with high freedom, and various different light spot patterns and spatial distribution are realized on a projection surface.

Description

Technical Field

[0001] The present disclosure relates to a light emitting element array and an optical transceiver system having the light emitting element array. Background Art

[0002] With the advancement of current technology, a structure called metasurface in the semiconductor industry is being used in laser optical systems to replace traditional diffractive optical elements (DOEs), thereby miniaturizing the size of laser optical elements with metasurfaces. In addition, since the geometric structure of the metasurface is smaller than the wavelength of visible light, it can have more diverse light wave phase control capabilities than traditional diffractive optical elements.

[0003] Although laser optical components with meta-interfaces bring the possibility of device miniaturization and the function of laser beam shaping, the light wave control capability of meta-interfaces is usually fixed after the process is completed, making the laser optical characteristics of laser optical components with meta-interfaces too single, limiting their operational flexibility in real-world applications. Summary of the invention

[0004] A technical aspect of the present disclosure is a light emitting element array.

[0005] According to some embodiments of the present disclosure, a light-emitting element array includes a first light-emitting element, a second light-emitting element, and a third light-emitting element. The first light-emitting element includes a first light-emitting structure and a first beam shaping layer located on the first light-emitting structure. The first beam shaping layer is configured to convert light emitted by the first light-emitting structure into a first structured light. The second light-emitting element includes a second light-emitting structure and a second beam shaping layer located on the second light-emitting structure. The second beam shaping layer is configured to convert light emitted by the second light-emitting structure into a second structured light. The first structured light and the second structured light have the same spot pattern and spatial distribution on a projection surface. The third light-emitting element includes a third light-emitting structure and a third beam shaping layer located on the third light-emitting structure. The third beam shaping layer is configured to convert light emitted by the third light-emitting structure into a third structured light. The third structured light and the first structured light have different spot patterns and spatial distributions on a projection surface.

[0006] In some embodiments, each of the first structured light converted by the first beam shaping layer, the second structured light converted by the second beam shaping layer, and the third structured light converted by the third beam shaping layer has a reference light, and the reference lights are the same.

[0007] In some embodiments, the first beam shaping layer has a first metasurface, the second beam shaping layer has a second metasurface, and the third beam shaping layer has a third metasurface.

[0008] In some embodiments, the geometry of the first metasurface is the same as the geometry of the second metasurface, and the geometry of the first metasurface is different from the geometry of the third metasurface.

[0009] In some embodiments, each of the first metasurface, the second metasurface, and the third metasurface has a plurality of metaatoms, and the metaatoms are cylindrical, square, rectangular, or a combination thereof, and have a square lattice or a hexagonal lattice.

[0010] In some embodiments, each of the first light emitting structure, the second light emitting structure, and the third light emitting structure comprises a laser diode and a substrate, and the substrate is located between the laser diode and the first beam shaping layer, between the laser diode and the second beam shaping layer, or between the laser diode and the third beam shaping layer.

[0011] In some embodiments, the light emitting element array further includes a carrier and an electrode array. The carrier carries the first light emitting structure, the second light emitting structure, and the third light emitting structure. The electrode array is located on the carrier and has a plurality of N electrodes and a plurality of P electrodes. Each of the first light emitting structure, the second light emitting structure, and the third light emitting structure is electrically connected to one of the N electrodes and one of the P electrodes.

[0012] Another technical aspect of the present disclosure is an optical transceiver system.

[0013] According to some embodiments of the present disclosure, an optical transceiver system includes a light emitting element array and a receiver array. The light emitting element array includes a first light emitting element, a second light emitting element, and a third light emitting element. The first light emitting element includes a first light emitting structure and a first beam shaping layer located on the first light emitting structure. The first beam shaping layer is configured to convert the light emitted by the first light emitting structure into a first structured light. The second light emitting element includes a second light emitting structure and a second beam shaping layer located on the second light emitting structure. The second beam shaping layer is configured to convert the light emitted by the second light emitting structure into a second structured light. The first structured light and the second structured light have the same spot pattern and spatial distribution on a projection surface. The third light emitting element includes a third light emitting structure and a third beam shaping layer located on the third light emitting structure. The third beam shaping layer is configured to convert the light emitted by the third light emitting structure into a third structured light. The spot pattern and spatial distribution of the third structured light and the first structured light on the projection surface are different. The receiver array is configured to receive the first structured light, the second structured light, and the third structured light.

[0014] In some embodiments, the first beam shaping layer has a first metasurface, the second beam shaping layer has a second metasurface, and the third beam shaping layer has a third metasurface.

[0015] In some embodiments, the geometry of the first metasurface is the same as the geometry of the second metasurface, and the geometry of the first metasurface is different from the geometry of the third metasurface.

[0016] In some embodiments, the optical transceiver system further includes a modulator, a focusing lens and an imaging recognition system. The modulator is electrically connected to the light emitting element array. The focusing lens is disposed on one side of the receiver array. The imaging recognition system is electrically connected to the receiver array.

[0017] In some embodiments, each of the first structured light converted by the first beam shaping layer, the second structured light converted by the second beam shaping layer, and the third structured light converted by the third beam shaping layer has a reference light, and the reference lights are the same.

[0018] In some embodiments, the light emitting element array of the optical transceiver system further includes a carrier and an electrode array. The carrier carries the first light emitting structure, the second light emitting structure, and the third light emitting structure. The electrode array is located on the carrier and has a plurality of N electrodes and a plurality of P electrodes. Each of the first light emitting structure, the second light emitting structure, and the third light emitting structure is electrically connected to one of the N electrodes and one of the P electrodes.

[0019] In the above-mentioned embodiment of the present disclosure, since the light emitting element array includes the first light emitting element, the second light emitting element and the third light emitting element, the spot pattern and spatial distribution of the first structured light and the second structured light on the projection surface are the same, and the spot pattern and spatial distribution of the third structured light and the first structured light on the projection surface are different, the first structured light, the second structured light and the third structured light can realize a variety of different spot patterns and spatial distributions on the projection surface, and the light emitting element array can emit structured light with a high degree of freedom. In addition, since the light emitting element array has a plurality of light emitting elements, the image projected by the light emitting element array can have a better image resolution, and the light emitting element array can realize the function of two-dimensional laser beam array scanning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] When with Figure 1 When read together, the aspects of the present disclosure can be best understood from the following embodiments. Note that according to standard practice in this industry, various features are not drawn to scale. In fact, the size of various features can be arbitrarily increased or reduced for clarity of discussion.

[0021] Figure 1 A three-dimensional diagram is shown of a light emitting device array in operation according to an embodiment of the present disclosure.

[0022] Figure 2 Draw Figure 1 The light spot patterns of the first structured light, the second structured light and the third structured light on the projection surface.

[0023] Figure 3A Draw Figure 1 A side view of a first light emitting element on an electrode array.

[0024] Figure 3B Draw Figure 1 A top view of a first light emitting element on an electrode array.

[0025] Figure 4 Draw Figure 1 A cross-sectional view of the first light-emitting element on the carrier and the electrode array when in operation.

[0026] Figure 5 Draw Figure 1 A cross-sectional view of the second light-emitting element on the carrier and the electrode array when in operation.

[0027] Figure 6 Draw Figure 1 A cross-sectional view of the third light-emitting element on the carrier and the electrode array when in operation.

[0028] Figure 7 A schematic diagram is shown of an optical transceiver system in operation according to an embodiment of the present disclosure.

[0029] Figure 8 Draw Figure 7 The light spot patterns of the first structured light, the second structured light and the third structured light on the projection surface. DETAILED DESCRIPTION

[0030] The following disclosed embodiments provide many different embodiments or examples for implementing the different features of the provided target. Specific examples of components and arrangements are described below to simplify the present invention. Of course, these examples are only examples and are not intended to be limiting. In addition, the present invention can repeat element symbols and / or letters in each example. This repetition is used for the purpose of simplicity and clarity, and does not specify the relationship between the various embodiments and / or configurations discussed.

[0031] Spatially relative terms such as "below," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive purposes to describe the relationship of one element or feature to another element or feature as illustrated in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation illustrated in the accompanying drawings. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein should likewise be interpreted accordingly.

[0032] Figure 1 FIG. 1 is a schematic diagram showing the operation of the light emitting device array 100 according to an embodiment of the present disclosure. Figure 2 Draw Figure 1 The first structured light SL1, the second structured light SL2 and the third structured light SL3 are formed on the projection surface PP. Figure 1 and Figure 2 , the light emitting element array 100 includes a first light emitting element 110, a second light emitting element 120 and a third light emitting element 130. The first light emitting element 110 includes a first light emitting structure 111 and a first beam shaping layer 112 located on the first light emitting structure 111. The first beam shaping layer 112 is configured to convert the light emitted by the first light emitting structure 111 into a first structured light SL1. The second light emitting element 120 includes a second light emitting structure 121 and a second beam shaping layer 122 located on the second light emitting structure 121. The second beam shaping layer 122 is configured to convert the light emitted by the second light emitting structure 121 into a second structured light SL2. On the projection plane PP, the spatial distribution of the first structured light SL1 and the second structured light SL2 is the same, and the spot pattern S1 of the first structured light SL1 is the same as the spot pattern S2 of the second structured light SL2. The third light emitting element 130 includes a third light emitting structure 131 and a third beam shaping layer 132 located on the third light emitting structure 131. The third beam shaping layer 132 is configured to convert the light emitted by the third light emitting structure 131 into the third structured light SL3. On the projection plane PP, the spatial distribution of the first structured light SL1 and the third structured light SL3 are different, and the spot pattern S1 of the first structured light SL1 and the spot pattern S3 of the third structured light SL3 are also different.

[0033] In some embodiments, the projection surface PP may be a person's face or hand. For example, the light emitting element array 100 may be applied to a facial recognition system in a mobile phone, expression recognition, 3D sensing of augmented reality (AR) glasses, and pedestrian and hand recognition in a somatosensory game. In other embodiments, the projection surface PP may also be other surfaces, which is not intended to limit the present disclosure.

[0034] Specifically, since the light emitting element array 100 includes the first light emitting element 110, the second light emitting element 120 and the third light emitting element 130, and the spot pattern S1 of the first structured light SL1 is the same as the spot pattern S2 of the second structured light SL2 and different from the spot pattern S3 of the third structured light SL3 on the projection surface PP, the first structured light SL1, the second structured light SL2 and the third structured light SL3 can realize a variety of different spot patterns and spatial distributions on the projection surface PP, and the light emitting element array 100 can emit structured light with a high degree of freedom. In addition, since the light emitting element array 100 has a plurality of light emitting elements (such as the first light emitting element 110, the second light emitting element 120 and the third light emitting element 130), the image projected by the light emitting element array 100 can have a better image resolution, and the light emitting element array 100 can be applied to the function of two-dimensional laser beam array scanning.

[0035] In addition, each of the first structured light SL1 converted by the first beam shaping layer 112, the second structured light SL2 converted by the second beam shaping layer 122, and the third structured light SL3 converted by the third beam shaping layer 132 has a reference light RL, and the reference lights RL are the same. With such a configuration, the light emitting element array 100 can have the functions of 3D sensing calibration and positioning.

[0036] In some embodiments, the first beam shaping layer 112 has a first metasurface 113, the second beam shaping layer 122 has a second metasurface 123, and the third beam shaping layer 132 has a third metasurface 133. Since the first light emitting structure 111, the second light emitting structure 121, and the third light emitting structure 131 can be semiconductor laser elements, and the process of the metasurface and the process of the semiconductor laser element can be integrated, the process of the light emitting element array 100 can skip the optical element manufacturing plant and the semiconductor packaging plant for configuring the diffractive optical element (DOE), and realize monolithic integration, so that the size of the light emitting element array 100 can be further reduced.

[0037] In addition, the geometric figure G1 of the first metasurface 113 is the same as the geometric figure G2 of the second metasurface 123 (eg Figure 4 and Figure 5 ), and the geometric figure G1 of the first metasurface 113 is different from the geometric figure G3 of the third metasurface 133 (as shown in Figure 4 and Figure 6As shown). Such a configuration makes the spot pattern S1 of the first structured light SL1 the same as the spot pattern S2 of the second structured light SL2, and different from the spot pattern S3 of the third structured light SL3, so that the light emitting element array 100 can be applied to a timing coding technology with high resolution and high precision. In some embodiments, the spot pattern S1, the spot pattern S2, and the spot pattern S3 may include a dot array, a random pattern arrangement, or a mesh pattern distribution. In this embodiment, the spot pattern S1 and the spot pattern S2 are dot arrays, and the spot pattern S3 is a random pattern arrangement.

[0038] In addition, the light emitting element array 100 may further include a carrier 140 (submount) and an electrode array 150. The carrier 140 carries the first light emitting structure 111, the second light emitting structure 121 and the third light emitting structure 131. The electrode array 150 is located on the carrier 140. The electrode array 150 has a plurality of N electrodes 152 and a plurality of P electrodes 154. Each of the first light emitting structure 111 of the first light emitting element 110, the second light emitting structure 121 of the second light emitting element 120 and the third light emitting structure 131 of the third light emitting element 130 is electrically connected to one of the N electrodes 152 and one of the P electrodes 154. Such a configuration enables each of the first light emitting element 110, the second light emitting element 120 and the third light emitting element 130 of the light emitting element array 100 to operate independently (for example, independently control the on and off of each light emitting element), so that the light emitting element array 100 can emit structured light with a high degree of freedom.

[0039] Figure 3A Draw Figure 1 FIG. 1 is a side view of the first light emitting element 110 on the electrode array 150 . Figure 3B Draw Figure 1 A top view of the first light emitting element 110 on the electrode array 150. Figure 3A and Figure 3B, the first light-emitting element 110 includes a first light-emitting structure 111 and a first beam shaping layer 112 located on the first light-emitting structure 111. The first beam shaping layer 112 has a first metasurface 113. The first metasurface 113 has a plurality of metaatoms 114. In some embodiments, the metaatoms 114 may be cylindrical, square, rectangular, or a combination thereof, and may have a square lattice or a hexagonal lattice. In addition, the top surface areas of these metaatoms 114 may be different, so that the first beam shaping layer 112 may determine the spatial distribution and optical properties of the first structured light SL1. In some embodiments, computer generated holography (CGH) may be used to design a spatial distribution of the first structured light SL1, and the geometric figure G1 of the first metasurface 113 and the arrangement of the metaatoms 114 may be constructed according to its ideal far-field pattern. The configuration of the second light-emitting element 120 and the third light-emitting element 130 is similar to Figure 3A Similar, no repetition.

[0040] Figure 4 Draw Figure 1 The cross-sectional view of the first light emitting element 110 on the carrier 140 and the electrode array 150 when the first light emitting element 110 is in operation. Figure 4 and Figure 1 , the first light emitting element 110 includes a first light emitting structure 111 and a first beam shaping layer 112 located on the first light emitting structure 111. The carrier 140 carries the first light emitting structure 111. The electrode array 150 is located on the carrier 140. In this embodiment, the first light emitting structure 111 may have a substrate 115 and a laser diode 116, and the substrate 115 is located between the laser diode 116 and the first beam shaping layer 112. Such a configuration is a flip chip structure, which can occupy a smaller volume compared to a structure using wire bonding technology, which is conducive to the miniaturization of the light emitting element array 100. In addition, the N-pole 117 and the P-pole 118 of the laser diode 116 can be electrically connected to the N-electrode 152 and the P-electrode 154 of the electrode array 150, respectively. In this way, the laser diode 116 can be driven by the electrode array 150 to emit a laser beam to the first beam shaping layer 112, and the laser beam is converted into a first structured light SL1 having a reference light RL through the first beam shaping layer 112. In some embodiments, the laser diode 116 may include a vertical cavity surface emitting laser (VCSEL) and a photonic crystal surface emitting laser (PCSEL), but is not intended to limit this disclosure.

[0041] Figure 5 Draw Figure 1 The cross-sectional view of the second light emitting element 120 on the carrier 140 and the electrode array 150 when the second light emitting element 120 is in operation. Figure 5 and Figure 1 The second light emitting element 120 includes a second light emitting structure 121 and a second beam shaping layer 122 located on the second light emitting structure 121. In this embodiment, the second beam shaping layer 122 and Figure 4 The first beam shaping layer 112 is the same as the first beam shaping layer 112. The carrier 140 carries the second light emitting structure 121. The electrode array 150 is located on the carrier 140. In this embodiment, the second light emitting structure 121 may have a substrate 125 and a laser diode 126, and the substrate 125 is located between the laser diode 126 and the second beam shaping layer 122. Such a configuration is a flip chip structure, which can occupy a smaller volume compared to a structure using wire bonding technology, which is conducive to the miniaturization of the light emitting element array 100. In addition, the N pole 127 and the P pole 128 of the laser diode 126 can be electrically connected to the N electrode 152 and the P electrode 154 of the electrode array 150, respectively. In some embodiments, the laser diode 126 may include a vertical cavity surface emitting laser and a photonic crystal surface emitting laser, but this disclosure is not limited thereto.

[0042] In addition, the second beam shaping layer 122 has a second metasurface 123, and the second metasurface 123 may have a plurality of metaatoms 124. In some embodiments, the metaatom 124 may be cylindrical, square, rectangular, or a combination thereof, and may have a square lattice or a hexagonal lattice. The top surface areas of these metaatoms 124 may be different, so that the second beam shaping layer 122 may determine the spatial distribution and optical properties of the second structured light SL2. In some embodiments, computer-generated holography may be used to design a spatial distribution of a second structured light SL2, and the geometric figure G2 of the second metasurface 123 and the arrangement of the metaatoms 124 may be constructed according to its ideal far-field pattern. In this way, the laser diode 126 may be driven by the electrode array 150 to emit a laser beam to the second beam shaping layer 122, and the laser beam may be converted into the second structured light SL2 having the reference light RL by the second beam shaping layer 122. In this embodiment, the arrangement of the metaatoms 124 may be the same as that of the second structured light SL2. Figure 4 The arrangement of the metaatoms 114 is the same, and the geometric figure G2 of the second metasurface 123 is the same as the geometric figure G1 of the first metasurface 113, so that the spatial distribution of the first structured light SL1 and the second structured light SL2 can be the same.

[0043] Figure 6 Draw Figure 1 A cross-sectional view of the third light emitting element 130 on the carrier 140 and the electrode array 150 when the third light emitting element 130 is in operation. Figure 6 and Figure 1 The third light emitting element 130 includes a third light emitting structure 131 and a third beam shaping layer 132 located on the third light emitting structure 131. In this embodiment, the third beam shaping layer 132 and Figure 4 The first beam shaping layer 112 is different from Figure 5 The carrier 140 carries the third light emitting structure 131. The electrode array 150 is located on the carrier 140. In the present embodiment, the third light emitting structure 131 may have a substrate 135 and a laser diode 136, and the substrate 135 is located between the laser diode 136 and the third beam shaping layer 132. Such a configuration is a flip chip structure, which can occupy a smaller volume compared to a structure using wire bonding technology, which is conducive to the miniaturization of the light emitting element array 100. In addition, the N pole 137 and the P pole 138 of the laser diode 136 can be electrically connected to one of the N electrodes 152 and one of the P electrodes 154 of the electrode array 150, respectively. In some embodiments, the laser diode 136 may include a vertical cavity surface emitting laser and a photonic crystal surface emitting laser, but this disclosure is not limited thereto.

[0044] In addition, the third beam shaping layer 132 has a third metasurface 133, and the third metasurface 133 has a plurality of metaatoms 134. In some embodiments, the metaatom 134 may be cylindrical, square, rectangular, or a combination thereof, and may have a square lattice or a hexagonal lattice. The top surface areas of these metaatoms 134 may be different, so that the third beam shaping layer 132 may determine the spatial distribution and optical properties of the third structured light SL3. In some embodiments, computer-generated holography may be used to design a spatial distribution of a third structured light SL3, and the geometric figure G3 of the third metasurface 133 and the arrangement of the metaatoms 134 may be constructed according to its ideal far-field pattern. In this way, the laser diode 136 may be driven by the electrode array 150 to emit a laser beam to the third beam shaping layer 132, and the laser beam may be converted into the third structured light SL3 having the reference light RL by the third beam shaping layer 132. In this embodiment, the arrangement of the metaatoms 134 is the same as that of the third structured light SL3. Figure 4 The arrangement of the meta-atoms 114 is different, and the geometric figure G3 of the third metasurface 133 is different from the geometric figure G1 of the first metasurface 113 , so that the spatial distribution of the third structured light SL3 and the first structured light SL1 may be different.

[0045] It should be understood that the connection relationship, materials and functions of the components described above will not be repeated, but will be described first. In the following description, an optical transceiver system with a light emitting element array will be described.

[0046] Figure 7FIG. 2 is a schematic diagram showing an optical transceiver system 200 in operation according to an embodiment of the present disclosure. Figure 8 Draw Figure 7 The light spot patterns S1 to S3 of the first structured light SL1, the second structured light SL2 and the third structured light SL3 on the projection surface PP. The optical transceiver system 200 includes a receiver array 210 and the aforementioned light emitting element array 100. The light emitting element array 100 includes a first light emitting element 110, a second light emitting element 120 and a third light emitting element 130. On the projection surface PP, the spatial distribution of the first structured light SL1 and the second structured light SL2 is the same, and the spot pattern S1 of the first structured light SL1 is the same as the spot pattern S2 of the second structured light SL2. In addition, on the projection surface PP, the spatial distribution of the first structured light SL1 and the third structured light SL3 is different, and the spot pattern S1 of the first structured light SL1 and the spot pattern S3 of the third structured light SL3 are also different. The receiver array 210 has a plurality of receivers 212, and can receive the first structured light SL1, the second structured light SL2 and the third structured light SL3 reflected by the projection surface PP. Specifically, the light-emitting element array 100 can emit highly free structured light (including the first structured light SL1, the second structured light SL2 and the third structured light SL3) to the receiver array 210, so that the image received by the receiver array 210 can have better image resolution, and the optical transceiver system 200 can realize the function of two-dimensional laser beam array scanning (the switches of each light-emitting element of the light-emitting element array 100 (for example, the first light-emitting element 110, the second light-emitting element 120 and the third light-emitting element 130) can be freely controlled).

[0047] In some embodiments, the optical transceiver system 200 may further include a modulator 220, a focusing lens 230, and an imaging recognition system 240. The modulator 220 is electrically connected to the light emitting element array 100, so that the modulator 220 can control the first light emitting element 110, the second light emitting element 120, and the third light emitting element 130 through the electrode array 150. The focusing lens 230 is disposed on one side of the receiver array 210, for example, between the projection plane PP and the receiver array 210, and is configured so that the first structured light SL1, the second structured light SL2, and the third structured light SL3 can be focused on the receiver array 210. The imaging recognition system 240 is electrically connected to the receiver array 210, so that the optical transceiver system 200 can have a feature recognition function and can be applied to the technology of image reconstruction. In addition, the optical transceiver system 200 having the light emitting element array 100 and the receiver array 210 can be applied to the face recognition system in the mobile phone, expression recognition, 3D sensing of augmented reality glasses, and pedestrian and hand recognition of somatosensory games.

[0048] The foregoing summarizes the features of several embodiments so that those skilled in the art can better understand the aspects of the present disclosure. Those skilled in the art will appreciate that they can easily use the present disclosure as a basis for designing or modifying other processes and structures to achieve the same purposes and / or achieve the same advantages as the embodiments described herein. Those skilled in the art will also appreciate that such equivalent constructions do not depart from the spirit and scope of the present disclosure, and that they may make various changes, substitutions, and modifications herein without departing from the spirit and scope of the present disclosure.

[0049]

Explanation of symbols

[0050] 100: Light emitting element array

[0051] 110: first light emitting element

[0052] 111: first light emitting structure

[0053] 112: First beam shaping layer

[0054] 113: The First Metainterface

[0055] 114,124,134: Meta-atoms

[0056] 115,125,135:Substrate

[0057] 116,126,136: Laser diode

[0058] 117,127,137:N pole

[0059] 118,128,138:P

[0060] 120: second light emitting element

[0061] 121: Second light emitting structure

[0062] 122: Second beam shaping layer

[0063] 123: The Second Metainterface

[0064] 130: third light emitting element

[0065] 131: Third light emitting structure

[0066] 132: The third beam shaping layer

[0067] 133: The Third Metainterface

[0068] 140: Carrier

[0069] 150: Electrode array

[0070] 152:N electrode

[0071] 154:P electrode

[0072] SL1: The first structured light

[0073] SL2: Second structured light

[0074] SL3: The third structured light

[0075] PP: Projection surface

[0076] S1, S2, S3: Spot pattern

[0077] G1, G2, G3: Geometric shapes

[0078] RL: Reference Light

[0079] 200: Optical transceiver system

[0080] 210: Receiver Array

[0081] 212: Receiver

[0082] 220: Modulator

[0083] 230: Focusing lens

[0084] 240: Imaging recognition system.

Claims

1. A light emitting element array, characterized in that: include: A first light-emitting element, comprising a first light-emitting structure and a first beam shaping layer located on the first light-emitting structure, wherein the first beam shaping layer is configured to convert the light emitted by the first light-emitting structure into a first structured light; A second light-emitting element, comprising a second light-emitting structure and a second beam shaping layer located on the second light-emitting structure, wherein the second beam shaping layer is configured to convert the light emitted by the second light-emitting structure into a second structured light, and the first structured light and the second structured light have the same spot pattern and spatial distribution on the projection surface; as well as The third light-emitting element includes a third light-emitting structure and a third beam shaping layer located on the third light-emitting structure, wherein the third beam shaping layer is configured to convert the light emitted by the third light-emitting structure into a third structured light, and the third structured light is different from the first structured light in a spot pattern and spatial distribution on the projection surface.

2. The light emitting element array according to claim 1, wherein: Each of the first structured light converted by the first beam shaping layer, the second structured light converted by the second beam shaping layer, and the third structured light converted by the third beam shaping layer has a reference light, and the plurality of reference lights are identical to each other.

3. The light emitting element array according to any one of claims 1 to 2, characterized in that: The first beam shaping layer has a first metasurface, the second beam shaping layer has a second metasurface, and the third beam shaping layer has a third metasurface.

4. The light emitting element array according to claim 3, wherein: The geometric figure of the first metasurface is the same as the geometric figure of the second metasurface, and the geometric figure of the first metasurface is different from the geometric figure of the third metasurface.

5. The light emitting element array according to claim 3, wherein: Each of the first metasurface, the second metasurface, and the third metasurface has a plurality of metaatoms, and the plurality of metaatoms are cylindrical, square, rectangular, or a combination thereof, and have a square lattice or a hexagonal lattice.

6. The light emitting element array according to any one of claims 1 to 2, characterized in that: Each of the first light emitting structure, the second light emitting structure and the third light emitting structure has a laser diode and a substrate, and the substrate is located between the laser diode and the first beam shaping layer, between the laser diode and the second beam shaping layer or between the laser diode and the third beam shaping layer.

7. The light emitting element array according to any one of claims 1 to 2, characterized in that: Also includes: A carrier, carrying the first light-emitting structure, the second light-emitting structure and the third light-emitting structure; as well as The electrode array is located on the carrier and has a plurality of N electrodes and a plurality of P electrodes, wherein each of the first light-emitting structure, the second light-emitting structure and the third light-emitting structure is electrically connected to one of the plurality of N electrodes and one of the plurality of P electrodes.

8. An optical transceiver system, characterized in that: include: A light emitting element array, comprising: A first light-emitting element, comprising a first light-emitting structure and a first beam shaping layer located on the first light-emitting structure, wherein the first beam shaping layer is configured to convert the light emitted by the first light-emitting structure into a first structured light; a second light-emitting element, comprising a second light-emitting structure and a second beam shaping layer located on the second light-emitting structure, wherein the second beam shaping layer is configured to convert the light emitted by the second light-emitting structure into a second structured light, and the first structured light and the second structured light have the same spot pattern and spatial distribution on a projection surface; and A third light-emitting element, comprising a third light-emitting structure and a third beam shaping layer located on the third light-emitting structure, wherein the third beam shaping layer is configured to convert the light emitted by the third light-emitting structure into a third structured light, and the third structured light has a different light spot pattern and spatial distribution from the first structured light on the projection surface; and The receiver array is configured to receive the first structured light, the second structured light and the third structured light.

9. The optical transceiver system according to claim 8, characterized in that: The first beam shaping layer has a first metasurface, the second beam shaping layer has a second metasurface, and the third beam shaping layer has a third metasurface.

10. The optical transceiver system according to claim 9, characterized in that: The geometric figure of the first metasurface is the same as the geometric figure of the second metasurface, and the geometric figure of the first metasurface is different from the geometric figure of the third metasurface.

11. The optical transceiver system according to any one of claims 8 to 10, characterized in that: Also includes: A modulator electrically connected to the light emitting element array; A focusing lens is disposed on one side of the receiver array; as well as The imaging recognition system is electrically connected to the receiver array.

12. The optical transceiver system according to any one of claims 8 to 10, characterized in that: Each of the first structured light converted by the first beam shaping layer, the second structured light converted by the second beam shaping layer, and the third structured light converted by the third beam shaping layer has a reference light, and the plurality of reference lights are identical to each other.

13. The optical transceiver system according to any one of claims 8 to 10, characterized in that: The light emitting element array further comprises: a carrier, carrying the first light-emitting structure, the second light-emitting structure and the third light-emitting structure; and The electrode array is located on the carrier and has a plurality of N electrodes and a plurality of P electrodes, wherein each of the first light-emitting structure, the second light-emitting structure and the third light-emitting structure is electrically connected to one of the plurality of N electrodes and one of the plurality of P electrodes.

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