Light-emitting assembly, light source array, transmitter and communication device

Abstract

The embodiment of the invention provides a light-emitting assembly, a light source array, a transmitter and a communication device, the light-emitting assembly comprises m * n light-emitting units, the m * n light-emitting units are connected in series and in parallel, the light-emitting units in the same column are connected in series, and the light-emitting units in different columns after series connection are connected in parallel, the light-emitting units are connected in series and in parallel, on one hand, the power of the light-emitting assembly is equal to the sum of the power of the m * n light-emitting units, the power of the light source can be improved, on the other hand, the increment of the capacitance can be reduced, and the reduction of the bandwidth of the light source is reduced. And the bandwidth of the light source can be ensured to be basically unchanged.

Description

Light emitting component, light source array, transmitter and communication device Technical Field

[0001] The embodiments of the present application relate to the field of optical wireless communication technology, and in particular to a light-emitting component, a light source array, a transmitter, and a communication device. Background Art

[0002] Optical wireless communication (OWC) is a key area of ​​wireless communication. With advantages such as large available bandwidth, small transmit antennas, and robustness against electromagnetic interference, OWC is widely used in both communication and sensing scenarios.

[0003] Currently, electronic devices can use light-emitting units to generate light. These units can be, for example, vertical cavity surface emitting lasers (VCSELs), edge emitting lasers (EELs), or light-emitting diodes (LEDs). However, when these light-emitting units are used in electronic devices, the power is low, which cannot meet requirements such as long-distance communication. High-power light-emitting units also have low bandwidth, which cannot meet the requirements of high-speed communication.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a light-emitting component, a light source array, a transmitter, and a communication device, which can increase the power of the light source array while ensuring that the bandwidth remains unchanged, and can meet the needs of high-speed communication.

[0006] In a first aspect, embodiments of the present application provide a light-emitting assembly comprising: m×n light-emitting units, wherein the m×n light-emitting units are connected in a combination of series and parallel connection, wherein light-emitting units in the same column are connected in series, and light-emitting units in different columns after the series connection are connected in parallel. m is an integer greater than or equal to 2, and n is an integer greater than or equal to 2.

[0007] In the embodiment of the present application, on the one hand, the power of the light-emitting assembly is equal to the sum of the powers of the m×n light-emitting units, which can increase the power of the light source compared to one light-emitting unit. On the other hand, based on the fact that when the light-emitting units are connected in parallel, the capacitance is the sum of the capacitances of the light-emitting units, and when the light-emitting units are connected in series, the capacitance is the reciprocal of the sum of the reciprocals of the capacitances of each light-emitting unit, in the embodiment of the present application, the m×n light-emitting units are connected in a combination of series and parallel connection, which can reduce the increase in capacitance and thereby reduce the decrease in the bandwidth of the light source. Compared to the current light source design, the light-emitting assembly provided in the embodiment of the present application can increase the power of the light source while ensuring that the bandwidth of the light source remains basically unchanged.

[0008] In one possible implementation, m is equal to n. In this implementation, compared to a light-emitting unit, the capacitance of the light-emitting assembly remains unchanged, so the light-emitting units are connected in series and in parallel to ensure that the bandwidth of the light source remains unchanged.

[0009] In a possible implementation, the light emitting unit is any one of the following: a vertical cavity surface emitting laser (VCSEL), an edge emitting laser (EEL), a light emitting diode (LED), a micro light emitting diode (micro LED), or a super luminescent diode (SLD).

[0010] Based on the light-emitting unit, in a second aspect, an embodiment of the present application provides a light source array.

[0011] In one possible implementation, the light source array may include: M×N light-emitting assemblies as described in the first aspect, wherein the M×N light-emitting assemblies are connected in series and in parallel, M is an integer greater than or equal to 2, and N is an integer greater than or equal to 2.

[0012] In the embodiment of the present application, compared with one light-emitting component, because M×N light-emitting components are connected in series and parallel, the light source array can increase the power of the light source while ensuring that the bandwidth of the light source remains basically unchanged.

[0013] In one possible implementation, M is equal to N. In this implementation, compared to a single light emitting component, the capacitance of the light source array remains unchanged, so the light emitting components are connected in series and in parallel to ensure that the bandwidth of the light source remains unchanged.

[0014] In one possible implementation, the light source array may include at least one type of light-emitting assembly. Different types of light-emitting assemblies have different numbers of rows and / or columns of light-emitting units. Exemplarily, the light source array may include: M×N light-emitting assemblies as described in the first aspect, and X×Y light-emitting assemblies as described in the first aspect, wherein each of the M×N light-emitting assemblies includes m×n light-emitting units, and each of the X×Y light-emitting assemblies includes x×y light-emitting units.

[0015] In some embodiments, X is equal to Y, and x is equal to y. The size relationship between X and Y can refer to the relevant description of M and N, and the size relationship between x and y can refer to the relevant description of m and n.

[0016] In the embodiment of the present application, the light source array may include at least one type of light-emitting component, which can improve the design flexibility of the light source array.

[0017] The following describes the design of a light source array by taking a light source array including M×N light-emitting components, and each light-emitting component including m×n light-emitting components as an example:

[0018] In the light source array, light emitting components in the same column are connected in series, and light emitting components in different columns after the series connection are connected in parallel; or, light emitting components in the same row are connected in parallel, and light emitting components in different rows after the parallel connection are connected in series.

[0019] In the embodiments of the present application, the connection modes of the light emitting components are various, and the design of the light source array is highly flexible and easy to implement.

[0020] In the light source array, the light-emitting units in the first row of the light-emitting components are connected to the power input terminal and the signal input terminal, and the light-emitting units in the mth row of the light-emitting components are grounded. In this way, the light source array can transmit the signal input from the signal input terminal.

[0021] Because each light-emitting unit in the light source array can emit light, in some embodiments, the wavelength of the light emitted by the light-emitting unit can be set to enable the light source array to be used in different scenarios:

[0022] First, in a light source array, the wavelength of light emitted by each light-emitting unit is equal. Because light of different wavelengths can perceive different objects, this light source array is suitable for scenarios where a single object is perceived.

[0023] Second, in the light source array, the light-emitting units in each light-emitting assembly emit light of equal wavelength, and at least two light-emitting assemblies emit light of different wavelengths. Because different wavelengths of light can be used to perceive different objects, this light source array design is suitable for scenarios where diverse objects need to be perceived. For example, if a room contains multiple objects, a communication device using this light source array can perceive these different objects, allowing the communication device to determine information such as the types of objects in the room.

[0024] Third, in a light source array, at least two light-emitting units in at least one light-emitting assembly emit light of different wavelengths. In this example, because the light-emitting assembly includes light-emitting units with different wavelengths, the communication device can perceive multiple objects within the range covered by the light emitted by the light-emitting assembly. Thus, within the same coverage area, the light source array can be used to achieve more fine-grained perception.

[0025] In one possible implementation, each light-emitting component corresponds to an impedance circuit, and the difference between the impedance of the impedance circuit and the impedance of the light-emitting component is within a preset range. This allows the communication device to selectively use any light-emitting component in the light source array, making the light source array applicable to a wider range of scenarios.

[0026] In some embodiments, the impedance circuit includes any one of the following:

[0027] a first capacitor; or,

[0028] a first resistor; or,

[0029] a second resistor, a third resistor, and a second capacitor, wherein the second resistor and the third resistor are connected in series, and the second resistor and the second capacitor are connected in parallel.

[0030] In some embodiments, the impedance circuit includes at least one light-emitting unit. Exemplarily, the at least one light-emitting unit includes a×b light-emitting units, where a is an integer greater than or equal to 2, and b is an integer greater than or equal to 2.

[0031] In summary, no matter how the impedance circuit is implemented, the difference between the impedance of the impedance circuit and the impedance of the light-emitting component is within a preset range. In this way, when the light-emitting component is turned off, the capacitance generated when the impedance circuit is turned on is equal to the capacitance generated when the light-emitting component is turned on. This ensures that when the communication device turns on one or more light-emitting components, the capacitance of the light source array remains unchanged, thereby ensuring that the bandwidth of the light source array remains unchanged.

[0032] In some embodiments, to facilitate the selective use of any one or more light-emitting components in a light source array by a communication device, each light-emitting component may correspond to an impedance circuit and at least one first switch. The at least one first switch is configured to conduct electricity to the light-emitting component or the impedance circuit corresponding to the light-emitting component. This design allows the communication device to selectively use any one or more light-emitting components in the light source array by controlling the first switch, providing high flexibility.

[0033] When the impedance circuit includes at least one light-emitting unit, since the impedance circuit can also emit light, the wavelength of the light emitted by the light-emitting unit and the wavelength of the light emitted by the light-emitting unit in the impedance circuit can be set to enable the light source array to be applied in different scenarios:

[0034] The wavelengths of light emitted by the light-emitting units in the impedance circuit are equal; or the wavelengths of light emitted by the light-emitting units in each impedance circuit are equal, and there are at least two impedance circuits where the light-emitting units emit light of different wavelengths.

[0035] Among them, the wavelength of light emitted by the light-emitting unit in at least one impedance circuit is equal to the wavelength of light emitted by the light-emitting unit in at least one light-emitting component; or the wavelength of light emitted by the light-emitting unit in at least one impedance circuit is different from the wavelength of light emitted by the light-emitting unit in at least one light-emitting component.

[0036] In this implementation, the wavelengths of light emitted by the light-emitting units in the impedance circuit can be set to be equal, or the wavelengths of light emitted by the light-emitting units in at least two impedance circuits can be unequal, or the wavelengths of light emitted by the light-emitting components and the light-emitting units in the corresponding impedance circuits can be set to be equal or unequal, enabling the light source array to be applied in different scenarios. The following describes the application scenarios of the light source array in conjunction with the principle of light emission of the light-emitting units:

[0037] In some embodiments, when the light source array is at a first distance from the lens, the light emitted by the light-emitting unit in each light-emitting component passes through the lens to form a light spot; or, when the light source array is at a second distance from the lens and there are light-emitting units in i light-emitting components that emit light, the light emitted by the light-emitting units in the i light-emitting components passes through the lens to form a light spot, and the power of the light spot is related to i, where i is an integer greater than or equal to 1 and less than or equal to M×N.

[0038] Scenario 1:

[0039] When the light source array is at a first distance from the lens, the light emitted by the light-emitting unit in each light-emitting assembly passes through the lens to form a light spot. In this example, because the light spots corresponding to different light-emitting assemblies cover different ranges, this light source array can be applied to tracking scenarios:

[0040] For example, in a perception scenario, such as a communication device perceiving a user, when the user is in a first position, the light source array may receive a third control signal, which is used to turn on a second target light-emitting component. In response to the third control signal, the light source array may turn on the second target light-emitting component, enabling the light source array to emit a third light beam. This third light beam covers the first position.

[0041] When the user moves to the second position, the light source array may receive a fourth control signal, which is used to turn on the third target light-emitting component. In response to the fourth control signal, the light source array may turn on the third target light-emitting component, enabling the light source array to emit a fourth light beam. The fourth light beam covers the second position.

[0042] In this scenario, the communication device can select a light-emitting component covering the user's location to emit light based on the user's location, so that user tracking can be achieved.

[0043] Scenario 2:

[0044] When the light source array is at the second distance from the lens, because the communication device in the embodiment of the present application can selectively use one or more light-emitting components, for example, the communication device can use i light-emitting components in the light source array to emit light, and the light emitted by the light-emitting units in the i light-emitting components passes through the lens to form a light spot. Because the light emitted by the light-emitting units in the i light-emitting components passes through the lens to form a light spot, when i is larger, the power of the light source is larger, or it can be said that the power of the light spot is larger, that is, the power of the light spot is related to i. In the embodiment of the present application, the communication device can select one or more light-emitting components to emit light, and can adjust the power of the light emitted by the light source array. This example can be applied to power adjustment scenarios.

[0045] Exemplarily, the light source array can receive a fifth control signal, which is used to turn on the fourth target light-emitting component. In response to the fifth control signal, the light source array can turn on the fourth target light-emitting component, enabling the light source array to emit a fifth light beam. In addition, the light source array can receive a sixth control signal, which is used to turn on the fifth target light-emitting component. In response to the sixth control signal, the light source array can turn on the fifth target light-emitting component, enabling the light source array to emit a sixth light beam. The number of the fourth target light-emitting components is different from the number of the fifth target light-emitting components, so that the power of the fifth light beam and the sixth light beam are different. In this way, the communication device can achieve power adjustment of the light source array.

[0046] Scenario 3: When the wavelengths of light emitted by different light-emitting units in each light-emitting component are different, the communication device can selectively use at least one light-emitting component to achieve perception and communication at different granularities.

[0047] In some embodiments, for example, the light source array may receive a first control signal configured to turn on a target impedance circuit. In response to the first control signal, the light source array may turn on the target impedance circuit, enabling the light source array to emit at least one first light beam. It should be understood that when the target impedance circuit is turned on, the light-emitting component corresponding to the target impedance circuit is turned off. The number of target impedance circuits is equal to the number of first light beams, and the light emitted by the light-emitting unit in each target impedance circuit forms a first light beam.

[0048] In this example, the light source array emits light using light-emitting units in a target impedance circuit, enabling coarse-grained communication and perception.

[0049] In some embodiments, for example, the light source array can receive a second control signal, and the second control signal is used to turn on the first target light-emitting component. In response to the first control signal, the light source array can turn on the first target light-emitting component, enabling the light source array to emit at least one second light beam. In the embodiment of the present application, because the wavelengths of light emitted by different light-emitting units in each light-emitting component are different, that is, each light-emitting component can emit light of different wavelengths, because each light-emitting component includes m×n light-emitting units, and the wavelengths of light emitted by each light-emitting unit are different, each light-emitting component can emit m×n sub-beams. Among them, the number of second light beams is equal to the number of light-emitting components, and each second light-emitting component can include m×n sub-beams, and the diameter of the sub-beam is smaller than the diameter of the first light beam.

[0050] In this example, the light source array uses the light-emitting units in the first target light-emitting component to emit light. Because the wavelengths of light emitted by different light-emitting units in each light-emitting component are different, each light-emitting component can emit m×n sub-beams, and each sub-beam can be used to perceive different objects. Therefore, this example can achieve fine-grained communication and perception.

[0051] In a third aspect, embodiments of the present application provide a transmitter comprising at least one light source array as described in the second aspect. In different light source arrays, the light-emitting units in the first row of the first row of light-emitting assemblies are connected to different signal input terminals. In this example, the transmitter may include at least one light source array, enabling communication between the communication device and multiple objects. The structure of each light source array may refer to the description in the above embodiments.

[0052] In one possible implementation, in each light source array, the mth row of light-emitting units in the i-th row of light-emitting components is connected to a second switch, and the first row of light-emitting units in the i+1-th row of light-emitting components is connected to a third switch, where i is an integer greater than or equal to 1 and less than or equal to M-1.

[0053] The second switch corresponding to the i-th row of light-emitting components in the first light source array is respectively connected to the third switch corresponding to the i+1-th row of light-emitting components in the first light source array and the third switch corresponding to the i+1-th row of light-emitting components in other light source arrays, and the first light source array is included in the at least one light source array.

[0054] In this implementation, the communication device can use light emitting components in different light source arrays to communicate with the object, which can improve the utilization rate of the light emitting components. In addition, because the light emitted by different light emitting components covers different ranges, the optical communication coverage of the communication device can be increased.

[0055] In one possible implementation, each light source array corresponds to a baseband signal source and a driver circuit, the baseband signal source being configured to output a control signal, and the driver circuit being configured to control the light-emitting units in the light source array to emit light based on the control signal. Alternatively, each light source array corresponds to a lens, or at least two light source arrays share a lens.

[0056] In a fourth aspect, an embodiment of the present application provides a communication device, which may include the transmitter described in the third aspect.

[0057] In a fifth aspect, an embodiment of the present application provides a communication method applied to the light source array described in the second aspect. When the wavelengths of light emitted by different light-emitting units in each light-emitting component are different, the method includes: receiving a first control signal; turning on the target impedance circuit to enable the light source array to emit at least one first light beam; receiving a second control signal; turning on the first target light-emitting component to enable the light source array to emit at least one second light beam, each second light beam including m×n sub-beams, and the diameter of the sub-beam is smaller than the diameter of the first light beam.

[0058] In one possible implementation, when the light source array is at a first distance from the lens, the method further includes: receiving a third control signal; turning on the second target light-emitting component to enable the light source array to emit a third light beam, and the third light beam covers the first position; receiving a fourth control signal; turning on the third target light-emitting component to enable the light source array to emit a fourth light beam, and the fourth light beam covers the second position.

[0059] In one possible implementation, when the light source array is at a second distance from the lens, the method further includes: receiving a fifth control signal; turning on the fourth target light-emitting component to enable the light source array to emit a fifth light beam; receiving a sixth control signal; turning on the fifth target light-emitting component to enable the light source array to emit a sixth light beam, and the number of the fourth target light-emitting components is different from the number of the fifth target light-emitting components.

[0060] In a sixth aspect, an embodiment of the present application provides a communication device, comprising: a processor and a memory, wherein the memory stores computer-executable instructions; and the processor executes the computer-executable instructions stored in the memory, so that the processor performs the method described in the fifth aspect.

[0061] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is executed, the method described in the fifth aspect is implemented.

[0062] In an eighth aspect, an embodiment of the present application provides a computer program product, comprising a computer program or instructions, which, when executed by a processor, implements the method described in the fifth aspect.

[0063] In the ninth aspect, an embodiment of the present application provides a chip comprising a processor and a communication interface, wherein the processor utilizes the communication interface to execute the method described in the fifth aspect.

[0064] The beneficial effects of the possible implementation methods of the fourth aspect and the sixth aspect to the ninth aspect mentioned above can be referred to the beneficial effects described in the other aspects mentioned above, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] FIG1A is a schematic diagram of a light source design;

[0066] FIG1B is a schematic diagram of another light source design;

[0067] FIG1C is a schematic diagram of another light source design;

[0068] FIG2 is a schematic diagram of a light-emitting assembly provided in an embodiment of the present application;

[0069] FIG3A is another schematic diagram of a light-emitting assembly provided in an embodiment of the present application;

[0070] FIG3B is another schematic diagram of a light-emitting component provided in an embodiment of the present application;

[0071] FIG3C is another schematic diagram of a light-emitting assembly provided in an embodiment of the present application;

[0072] FIG3D is another schematic diagram of a light-emitting component provided in an embodiment of the present application;

[0073] FIG3E is a schematic diagram of an implementation of a light-emitting component provided in an embodiment of the present application;

[0074] FIG3F is a schematic diagram illustrating a series connection of light-emitting units in the same column of a light-emitting assembly provided in an embodiment of the present application;

[0075] FIG3G is another schematic diagram of a light-emitting assembly provided in an embodiment of the present application;

[0076] FIG4A is a schematic diagram of a light source array provided in an embodiment of the present application;

[0077] FIG4B is another schematic diagram of a light source array provided in an embodiment of the present application;

[0078] FIG4C is another schematic diagram of a light source array provided in an embodiment of the present application;

[0079] FIG4D is another schematic diagram of a light source array provided in an embodiment of the present application;

[0080] FIG4E is another schematic diagram of a light source array provided in an embodiment of the present application;

[0081] FIG4F is another schematic diagram of a light source array provided in an embodiment of the present application;

[0082] FIG5A is another schematic diagram of a light source array provided in an embodiment of the present application;

[0083] FIG5B is another schematic diagram of a light source array provided in an embodiment of the present application;

[0084] FIG6A is another schematic diagram of a light source array provided in an embodiment of the present application;

[0085] FIG6B is another schematic diagram of a light source array provided in an embodiment of the present application;

[0086] FIG7 is a schematic diagram of a communication device provided in an embodiment of the present application;

[0087] FIG8A is a schematic diagram of a light spot provided in an embodiment of the present application;

[0088] FIG8B is a schematic diagram of a system architecture applicable to a tracking scenario provided in an embodiment of the present application;

[0089] FIG8C is a schematic diagram of a system architecture applicable to a communication scenario provided in an embodiment of the present application;

[0090] FIG8D is another schematic diagram of a communication device provided in an embodiment of the present application;

[0091] FIG8E is a flow chart of a communication method according to an embodiment of the present application;

[0092] FIG9A is another schematic diagram of a light spot provided in an embodiment of the present application;

[0093] FIG9B is another flow chart of a communication method according to an embodiment of the present application;

[0094] FIG10A is a schematic diagram of a wavelength setting of an impedance circuit and a light-emitting component provided in an embodiment of the present application;

[0095] FIG10B is a schematic diagram of another wavelength setting of the impedance circuit and the light-emitting component provided in an embodiment of the present application;

[0096] FIG10C is a schematic diagram of another wavelength setting of the impedance circuit and the light-emitting component provided in an embodiment of the present application;

[0097] FIG10D is a schematic diagram of the light spot corresponding to FIG10C ;

[0098] FIG10E is another schematic flow chart of a communication method according to an embodiment of the present application;

[0099] FIG11 is a schematic diagram of a plurality of light source arrays provided in an embodiment of the present application;

[0100] FIG12A is a schematic diagram of two light source arrays provided in an embodiment of the present application;

[0101] FIG12B is a schematic diagram of three light source arrays provided in an embodiment of the present application;

[0102] FIG12C is a schematic diagram of an array of z light sources provided in an embodiment of the present application;

[0103] FIG13A is another schematic diagram of a communication device provided in an embodiment of the present application;

[0104] FIG13B is another schematic diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0105] Optical wireless communication (OWC) technology can be widely used in both communication and perception scenarios. For example, in communication scenarios, a communication device can modulate a signal onto light for transmission. In perception scenarios, a communication device can emit light and perceive an object based on the received reflected light.

[0106] The communication device is equipped with a light source that can control the light source's illumination to achieve communication and perception. Currently, in perception scenarios, to ensure perception accuracy, the light source uses a high-power light-emitting unit with a small bandwidth. This is because a larger bandwidth allows for more data to be transmitted. However, the bandwidth of the light source in the perception scenario is low, and the amount of data that can be transmitted is small, making this light source unsuitable for communication scenarios. In communication scenarios, the light source uses a large-bandwidth, low-power light source. Because the higher the light source power, the longer the light propagates and the wider the coverage area, the low power of the light source in current communication scenarios affects the communication distance and coverage area of ​​optical wireless communication, making it unable to meet the requirements of long-distance communication and wide-area coverage.

[0107] In the embodiment of the present application, the communication device may be an electronic device provided with a light source, or may be a component such as a chip or processor in an electronic device that includes a light source. For example, the electronic device may be an access network device, a terminal device, or the like.

[0108] Access network devices may be, for example, access points (APs), base stations, etc. Terminal devices may be referred to as user equipment (UEs), terminals, etc. For example, terminal devices may be mobile phones, portable Android devices (PAD tablets), personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, vehicle-mounted devices, or wearable devices, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, wireless terminals in industrial control, wireless terminals in smart homes, radar equipment, etc. The embodiments of the present application do not specifically limit the form of terminal devices.

[0109] In order to increase the power of the light source, a light source including multiple light-emitting units can be provided. FIG1A is a schematic diagram of a light source design. Referring to FIG1A , in order to increase the power of the light source, multiple light-emitting units 11 can be connected in parallel, with one end of each light-emitting unit 11 connected to the power input terminal (V dd ) are connected, and the other end of each light-emitting unit 11 is grounded. In Figure 1A, the power of the light source is equal to the sum of the powers of the multiple light-emitting units 11. This light source design can increase the power of the light source, but because the multiple light-emitting units 11 are connected in parallel, the capacitance of the light source is equal to the sum of the capacitances of the multiple light-emitting units 11. This light source design will increase the capacitance of the light source. Because the capacitance of the light source is inversely proportional to the bandwidth of the light source, an increase in capacitance will lead to a decrease in the bandwidth of the light source. As the bandwidth decreases, the amount of data that can be transmitted by light decreases. This light source design cannot meet the needs of high-speed communication.

[0110] FIG1B is a schematic diagram of another light source design. Referring to FIG1B , the light source may include multiple light-emitting components 12, which are connected in series. Each light-emitting component 12 includes multiple light-emitting units 11 connected in parallel. Compared to FIG1A , the light source in FIG1B includes a larger number of light-emitting units 11, and the light source has a higher power. However, the light-emitting units 11 in each light-emitting component 12 are still connected in parallel, which also results in an increase in the capacitance of the light source and a decrease in the bandwidth of the light source. This light source design cannot meet the requirements of high-speed communication.

[0111] Figure 1C is a schematic diagram of another light source design. Referring to Figure 1C , a communication device can be provided with multiple broadband light sources 13. One end of each broadband light source 13 is connected to an electrical signal interface, and the other end of each broadband light source 13 is grounded. It should be understood that Vsig1, Vsig2, Vsig3, and Vsign in Figure 1C represent different electrical signal interfaces.

[0112] In FIG1C , each broadband light source 13 is connected to an independent electrical signal interface. To increase the power of the light source while maintaining the same light source bandwidth, multiple electrical signal interfaces need to be connected to devices such as power splitters. The peripheral circuit is highly complex, and the design of this light source is difficult to expand.

[0113] In order to solve the above problems, the embodiment of the present application provides a light-emitting component, which can increase the power of the light source while ensuring the bandwidth of the light source. Because the bandwidth of the light source remains basically unchanged, the amount of data transmitted by the light can be guaranteed to remain unchanged, and the demand for high-speed communication can be met. Moreover, because the power of the light source is increased, the communication distance and the communication coverage range can be increased, which can meet the needs of long-distance communication and large-scale coverage.

[0114] 2 , the light emitting assembly 21 includes m×n light emitting units 211. In other words, the light emitting assembly 21 includes a light emitting unit matrix with m rows and n columns, where m is an integer greater than or equal to 2, and n is an integer greater than or equal to 2.

[0115] In some embodiments, the light-emitting unit 211 can be any of the following: a vertical cavity surface emitting laser (VCSEL), an edge emitting laser (EEL), a light-emitting diode (LED), or a micro LED. It should be understood that the light-emitting unit 211 is represented by a diode in FIG2 .

[0116] 1A and 1B , the light-emitting units in the light source are connected in parallel. This design increases the capacitance of the light source and reduces its bandwidth. In the embodiment of the present application, the m×n light-emitting units 211 in the light-emitting assembly 21 are connected in a combination of series and parallel connections. This allows the power of the light-emitting assembly 21 to be equal to the sum of the powers of the m×n light-emitting units 211, thereby increasing the power of the light source.

[0117] On the other hand, when the light-emitting units 211 are connected in parallel, the capacitance is the sum of the capacitances of the light-emitting units 211. When the light-emitting units 211 are connected in series, the capacitance is the reciprocal of the sum of the reciprocals of the capacitances of each light-emitting unit 211. In the embodiment of the present application, m×n light-emitting units 211 are connected in series and in parallel. Although parallel connection can increase the capacitance of the light source, series connection will reduce the capacitance of the light source. Therefore, compared with the current method of connecting light-emitting units in parallel, the m×n light-emitting units 211 in the embodiment of the present application are connected in series and in parallel, which can reduce the increase in capacitance and thereby reduce the decrease in the bandwidth of the light source. Compared with the current light source design, the light-emitting component 21 provided in the embodiment of the present application can increase the power of the light source while ensuring that the bandwidth of the light source remains basically unchanged.

[0118] In some embodiments, m is equal to n, for example, the light-emitting assembly 21 includes m×m light-emitting units 211. Compared to a single light-emitting unit 211, in the embodiments of the present application, m×m light-emitting units 211 are connected in series and in parallel, which can increase the power of the light source while maintaining a substantially unchanged bandwidth.

[0119] The following describes the connection method of the m×n light-emitting units in the light-emitting assembly 21:

[0120] In some embodiments, in a light-emitting component, the light-emitting units in the same column are connected in series, and the light-emitting units in different columns after the series connection are connected in parallel. Referring to Figure 3A, in a light-emitting component, the light-emitting units in the first column are connected in series, the light-emitting units in the second column are connected in series, ..., and the light-emitting units in the nth column are connected in series, and the light-emitting units in the first column, the second column, ..., and the nth column after the series connection are connected in parallel. Among them, the light-emitting units in the first row are connected to the first electrode terminal, and the light-emitting units in the mth row are connected to the second electrode terminal. The first electrode terminal is a positive electrode or a negative electrode, and correspondingly, the second electrode terminal is a negative electrode or a positive electrode. It should be understood that Figures 3A to 3G take the example of the first electrode terminal being a positive electrode (+) and the second electrode terminal being a negative electrode (-).

[0121] Here we introduce the principle of how the light-emitting component ensures that the bandwidth of the light source remains basically unchanged and increases the power of the light source:

[0122] For example, the impedance of a light-emitting unit is capacitance C and power P. On the one hand, the light-emitting assembly includes m×n light-emitting units, and the power of the light-emitting assembly is m×n×P, which can improve the power of the light source. On the other hand, the capacitance of the first column of m light-emitting units connected in series is Similarly, the capacitance of the second column of m light-emitting units connected in series is ..., and the capacitance of the nth column m light-emitting units connected in series is The capacitance of the light-emitting units in the first, second, ..., and nth columns connected in parallel is In some embodiments, when m equals n, the capacitance of the light-emitting assembly is C, which remains unchanged compared to the capacitance of a single light-emitting unit, thereby ensuring that the bandwidth of the light source remains unchanged. In some embodiments, m and n can be set within a preset range of values ​​so that the capacitance of the light-emitting assembly remains unchanged compared to the capacitance of a single light-emitting unit, thereby ensuring that the bandwidth of the light source remains substantially unchanged.

[0123] In some embodiments, for example, m and n may satisfy “2n≥m≥n” or “2m≥n≥m”. In some embodiments, for example, m and n may satisfy “10≥m≥2” and “10≥n≥2”.

[0124] For example, taking m as 2 and n as 2 as an example, referring to FIG3B , the light-emitting assembly may include 2×2 light-emitting units, wherein the two light-emitting units in the first column are connected in series, the two light-emitting units in the second column are connected in series, and the light-emitting units in the first column and the light-emitting units in the second column are connected in parallel.

[0125] For example, the impedance of a light-emitting unit is a capacitance C, and the capacitance of the first column of two light-emitting units connected in series is The capacitance of the second column of two light-emitting units connected in series is The light-emitting units in the first column and the light-emitting units in the second column are connected in parallel, and the capacitance of the light-emitting assembly is the sum of the capacitances of the light-emitting units in the first column and the second column, C. Compared with a single light-emitting unit, the capacitance of the light-emitting assembly remains unchanged, but the power is increased.

[0126] In some embodiments, in a light-emitting assembly, light-emitting cells in the same row are connected in parallel, and light-emitting cells in different rows after the parallel connection are connected in series. Referring to FIG3C , in a light-emitting assembly, light-emitting cells in the first row are connected in parallel, light-emitting cells in the second row are connected in parallel, ..., and light-emitting cells in the mth row are connected in parallel, and after the parallel connection, the light-emitting cells in the first row, the second row, ..., and the mth row are connected in series. The light-emitting cells in the first row are connected to a first electrode terminal, and the light-emitting cells in the mth row are connected to a second electrode terminal.

[0127] For example, the impedance of a light-emitting unit is a capacitance of C and a power of P. On the one hand, the light-emitting assembly includes m×n light-emitting units, and the power of the light-emitting assembly is m×n×P, which can increase the power of the light source. On the other hand, the capacitance of the n light-emitting units in the first row connected in parallel is nC. Similarly, the capacitance of the n light-emitting units in the second row connected in parallel is nC, ..., and the capacitance of the n light-emitting units in the mth row connected in parallel is nC. The capacitance of the light-emitting units in the first, second, ..., and mth rows connected in series is In some embodiments, when m equals n, the capacitance of the light-emitting assembly is C. Compared to the capacitance of a light-emitting unit, the capacitance of the light-emitting assembly remains unchanged, thereby ensuring that the bandwidth of the light source remains unchanged. In some embodiments, m and n can be set within a preset value range. The setting of m and n can refer to the relevant description in the above embodiments.

[0128] For example, taking m as 2 and n as 2 as an example, referring to FIG3D , the light-emitting assembly may include 2×2 light-emitting units, wherein the light-emitting units in the first row are connected in parallel, the light-emitting units in the second row are connected in parallel, and the light-emitting units in the first row and the light-emitting units in the second row are connected in series.

[0129] For example, the impedance of a light-emitting unit is a capacitance of C. The capacitance of the two light-emitting units in the first row connected in parallel is 2C, and the capacitance of the two light-emitting units in the second row connected in parallel is 2C. The light-emitting units in the first row and the light-emitting units in the second row are connected in series, and the capacitance is Compared to a light-emitting unit, the capacitance of the light-emitting component 21 remains unchanged, but the power is increased.

[0130] After introducing the structure of the light-emitting component, the following first introduces the specific implementation method of the light-emitting component:

[0131] Taking VCSEL as an example, when designing a light source, a VCSEL chip can be used to manufacture a light-emitting component. Taking "light-emitting units in the same column are connected in series, and after the series connection, light-emitting units in different columns are connected in parallel" as an example, Figure 3E shows a light-emitting component including 4×4 light-emitting units. In the same column, two adjacent VCSEL chips can be connected in series using gold wire. Light-emitting units in different columns can share signal lines and ground lines, achieving the parallel connection of the four columns of light-emitting units in Figure 3E. The electrode end to which the shared signal line belongs can be considered the first electrode end, and the electrode end to which the ground line belongs can be considered the second electrode end.

[0132] In some embodiments, the length of the gold wire may be, for example, 5-20 mils, and the distance between different columns may be 5-20 mils.

[0133] In some embodiments, 4×4 VCSEL chips may be packaged as one, or the 4×4 VCSEL chips may be disposed on a printed circuit board (PCB).

[0134] Secondly, from the perspective of VCSEL chip manufacturing, the specific implementation method of the light-emitting component is introduced:

[0135] Taking the VCSEL chip as an N-type VCSEL chip as an example, Figure 3F shows two adjacent light-emitting units in the same column of the light-emitting component. Referring to Figure 3F, N-type doped gallium arsenide GaAs (n-GaAs) can be etched on an insulating substrate, and the insulating substrate can ensure that the positive and negative electrodes of the two adjacent N-type VCSEL chips are independent. In an embodiment of the present application, in order to achieve series connection of N-type VCSEL chips in the same column, a layer of metal can be deposited at the layer belonging to the positive and negative electrodes of the N-type VCSEL chip. The metal layer is used to connect the positive and negative electrodes of the two adjacent N-type VCSEL chips, thereby achieving series connection of the two adjacent N-type VCSEL chips.

[0136] Figure 3G illustrates the connection of 4×4 VCSEL chips. Referring to Figure 3G , in a light-emitting assembly, the cathodes and anodes of two adjacent VCSEL chips in the same column are connected, allowing the VCSEL chips in the same column to be connected in series. Light-emitting units in different columns can share the same N-pole and P-pole, respectively. The N-pole can be considered the first electrode terminal, and the P-pole can be considered the second electrode terminal.

[0137] In summary, the light-emitting assembly provided in the embodiments of the present application can increase the power of the light source while ensuring that the bandwidth of the light source remains substantially unchanged. Based on the design concept of the light-emitting assembly, the embodiments of the present application provide a light source array, which includes M×N light-emitting assemblies, and the M×N light-emitting assemblies are connected in series and parallel. Wherein, M is an integer greater than or equal to 2, and N is an integer greater than or equal to 2.

[0138] Compared to a single light-emitting assembly, a light source array includes a greater number of light-emitting units, further increasing the power of the light source. Furthermore, referring to the description of "the light-emitting units are connected in series and in parallel," connecting multiple light-emitting assemblies in series and in parallel can increase the power of the light source while maintaining a substantially unchanged bandwidth.

[0139] In some embodiments, M is equal to N. For example, the light source array may include M×M light-emitting components. Compared to a single light-emitting component, in the embodiments of the present application, M×M light-emitting components are connected in series and in parallel, which can increase the power of the light source while ensuring that the bandwidth of the light source remains substantially unchanged.

[0140] The following describes how to connect the M×M light-emitting components in the light source array:

[0141] In some embodiments, in a light source array, light-emitting components in the same column are connected in series, and after the series connection, light-emitting components in different columns are connected in parallel. Referring to FIG4A , in a light source array, light-emitting components in the first column are connected in series, light-emitting components in the second column are connected in series, ..., and light-emitting components in the Nth column are connected in series, and after the series connection, the light-emitting components in the first column, the second column, ..., and the Nth column are connected in parallel. It should be understood that the light-emitting components are represented by boxes in FIG4A .

[0142] Here we introduce the principle of how the light source array ensures that the bandwidth of the light source remains basically unchanged and increases the power of the light source:

[0143] For example, the impedance of a light emitting component is capacitance C and power P. On the one hand, the light source array includes M×N light emitting components, and the power of the light source array is M×M×P, which can improve the power of the light source. On the other hand, the capacitance of the first column of M light emitting components connected in series is Similarly, the capacitance of the second column of M light-emitting components connected in series is ..., and the capacitance of the M light-emitting components in the Nth column connected in series is The capacitance after the light emitting components in the first, second, ..., and Nth columns are connected in parallel is In some embodiments, when M equals N, the capacitance of the light source array is C, which remains constant compared to the capacitance of a single light-emitting component, thereby ensuring that the bandwidth of the light source remains constant. In some embodiments, M and N can be set within a preset range of values ​​so that the capacitance of the light source array remains constant compared to the capacitance of a single light-emitting component, thereby ensuring that the bandwidth of the light source remains substantially constant.

[0144] In some embodiments, for example, M and M may satisfy “2N≥M≥N” or “2M≥N≥M”. In some embodiments, for example, M and N may satisfy “10≥M≥2” and “10≥N≥2”.

[0145] For example, taking M as 2, N as 2, m as 2, and n as 2, the light source array may include 2×2 light-emitting assemblies, and each light-emitting assembly includes 2×2 light-emitting units. In FIG4B , taking “the light-emitting units in the first column are connected in series, the light-emitting units in the second column are connected in series, and the light-emitting units in the first column and the light-emitting units in the second column are connected in parallel” as an example, referring to FIG4B , in the light source array, the light-emitting assemblies in the first column are connected in series, the light-emitting assemblies in the second column are connected in series, and the light-emitting assemblies in the first column and the light-emitting assemblies in the second column are connected in parallel.

[0146] In some embodiments, in a light source array, light emitting components in the same row are connected in parallel, and light emitting components in different rows after the parallel connection are connected in series. Referring to FIG4C , in a light source array, light emitting components in the first row are connected in parallel, light emitting components in the second row are connected in parallel, ..., and light emitting components in the Mth row are connected in parallel, and the light emitting components in the first row, the second row, ..., and the Mth row after the parallel connection are connected in series.

[0147] Here we introduce the principle of how the light source array ensures that the bandwidth of the light source remains basically unchanged and increases the power of the light source:

[0148] For example, the impedance of a light emitting component is a capacitance of C and a power of P. On the one hand, the light source array includes M×N light emitting components, and the power of the light source array is M×M×P, which can improve the power of the light source. On the other hand, the capacitance of the N light emitting components in the first row connected in parallel is NC. Similarly, the capacitance of the N light emitting components in the second row connected in parallel is NC, ..., and the capacitance of the N light emitting components in the Mth row connected in parallel is NC. The capacitance of the light emitting components in the first row, the second row, ..., and the Mth row connected in series is In some embodiments, when M equals N, the capacitance of the light source array is C, which is constant compared to the capacitance of a single light-emitting component, thereby ensuring that the bandwidth of the light source remains constant. In some embodiments, M and N can be set within a preset value range. The setting of M and N can refer to the relevant description in the above embodiments.

[0149] Referring to FIG4D , taking M=2, N=2, m=2, and n=2 as an example, the light source array may include 2×2 light-emitting assemblies, and each light-emitting assembly includes 2×2 light-emitting units. FIG4D takes “the light-emitting units in the first column are connected in series, the light-emitting units in the second column are connected in series, and the light-emitting units in the first column and the light-emitting units in the second column are connected in parallel” as an example. Referring to FIG4D , in the light source array, the light-emitting assemblies in the first row are connected in parallel, the light-emitting assemblies in the second row are connected in parallel, and the light-emitting assemblies in the first row and the light-emitting assemblies in the second row are connected in series.

[0150] In the embodiment of the present application, referring to FIG. 4A to FIG. 4D , in the light source array, the light emitting units in the first row of the light emitting components are connected to the power input terminal (V dd ), and the signal input terminal (Vsig), and the light-emitting units in the mth row of the Mth row of light-emitting components are connected to ground (GND). The power input terminal is used to provide power to the light source array, ensuring that the light-emitting units in the light source array can emit light. The signal input terminal can be used to input signals to the light source array, and the light-emitting units in the light source array can emit light to carry the signals and achieve communication.

[0151] The light source array provided in the embodiments of the present application can increase the power of the light source while maintaining the bandwidth of the light source, meeting the needs of long-distance communication and wide-area coverage. In addition, the light source array only needs to connect to one power input terminal and one signal input terminal, which reduces complexity. As the number of light-emitting components or light-emitting units increases, there is no need to provide multiple signal input terminals, which facilitates expansion.

[0152] In some embodiments, the light source array may further include at least one type of light-emitting component. In different types of light-emitting components, the number of rows of light-emitting units is different, and / or the number of columns is different. Exemplarily, taking the light source array including two types of light-emitting components as an example, the light source array may include a first type of light-emitting component and a second type of light-emitting component. The first type of light-emitting component includes m×n light-emitting units, and the second type of light-emitting component includes x×y light-emitting units. x is an integer greater than or equal to 2, and y is an integer greater than or equal to 2. x and y may be within a preset numerical range. For details, please refer to the description of the preset numerical range of m and n.

[0153] In some embodiments, the light source array may include M×N first-type light-emitting components and X×Y second-type light-emitting components. The connections between the light-emitting components in the M×N first-type light-emitting components and the X×Y second-type light-emitting components, as well as the connections between the light-emitting units, may refer to the description of the light source array in the above embodiments. Wherein, X is an integer greater than or equal to 2, and Y is an integer greater than or equal to 2. X and Y may be within a preset numerical range, and for details, refer to the description of the preset numerical ranges for M and N.

[0154] For example, assuming m is 4, n is 2, x is 2, and y is 2, and assuming M is 2, N is 2, X is 1, and Y is 1, the light source array can be shown in FIG4E . In FIG4E , sig represents the same signal input terminal, and gnd represents the same ground terminal. It should be understood that FIG4E depicts each light-emitting component in the light source array with a dashed box, and different shading indicates different types of light-emitting components.

[0155] In addition, taking the example of a light source array including three types of light emitting components, a larger-scale light source array is shown in Figure 4F. It should be understood that the basic units of the three types of light emitting components in the light source array are circled in Figure 4F.

[0156] The light source array may include M×N light emitting components. In some embodiments, the wavelength of light emitted by the light emitting unit in each light emitting component may be preset so that the light source array can be applied to different scenarios.

[0157] First, in the light source array, the wavelength of light emitted by each light emitting unit is equal.

[0158] For example, the wavelength of light can be 850nm, 940nm, 1310nm, and 1550nm. 850nm corresponds to the absorption peak of metals, so 850nm light can be used to sense objects made of metal materials. 940nm corresponds to the absorption peak of OH bonds, so 940nm light can be used to sense objects such as water containing OH bonds. 1310nm corresponds to the absorption peak of C-H bonds, so 1310nm light can be used to sense objects such as wood containing C-H bonds. 1550nm corresponds to the absorption peak of OH bonds, so 1550nm light can be used to sense objects containing OH bonds.

[0159] In this example, taking the perception of a scene as an example, the light emitted by the light source array has a larger coverage area than a single light-emitting unit, and the light source array can perceive a larger range. The light source array includes M×N light-emitting components, and the wavelength of light emitted by each light-emitting unit in each light-emitting component is equal. This light source array is suitable for sensing scenes with a single object. For example, if there is wood stacked in a factory, the communication device can use this light source array to emit light, which can sense the wood and then calculate information such as the quantity of wood.

[0160] Second, in the light source array, the wavelengths of light emitted by the light-emitting units in each light-emitting component are equal, and there are at least two light-emitting components whose light-emitting units emit light of different wavelengths.

[0161] For example, a light source array includes 2×2 light-emitting components, with the four light-emitting components being light-emitting component 1, light-emitting component 2, light-emitting component 3, and light-emitting component 4. The wavelength of light emitted by the light-emitting units in each of the four light-emitting components is equal, but the wavelengths of light emitted by the light-emitting units in any two light-emitting components are different. For example, the light emitted by the light-emitting units in light-emitting component 1 is 850 nm, the light emitted by the light-emitting units in light-emitting component 2 is 940 nm, the light emitted by the light-emitting units in light-emitting component 3 is 1310 nm, and the light emitted by the light-emitting units in light-emitting component 4 is 1550 nm.

[0162] Because different wavelengths of light can be used to perceive different objects, this light array design is suitable for scenarios where diverse objects can be perceived. For example, if a room contains multiple objects, a communication device using this light array can detect each of these objects, allowing the device to determine information such as the type of object in the room.

[0163] Third, in the light source array, in at least one light-emitting component, there are at least two light-emitting units that emit light of different wavelengths.

[0164] For example, a light source array includes 2×2 light-emitting components, where the four light-emitting components are light-emitting component 1, light-emitting component 2, light-emitting component 3, and light-emitting component 4. For example, among the four light-emitting components, the light-emitting units in light-emitting component 1 emit light of different wavelengths. Because light of different wavelengths can be used to perceive different objects, the communication device can perceive different objects within the range covered by the light emitted by light-emitting component 1.

[0165] For example, taking the example of each light-emitting component including 2×2 light-emitting units, the wavelengths of light emitted by the four light-emitting units in the light-emitting component 1 are 850nm, 940nm, 1310nm, and 1550nm, respectively. Within the range covered by the light emitted by the light-emitting component 1, the communication device can perceive four different objects.

[0166] In this example, taking light-emitting assembly 1 as an example, in the first and second examples, the wavelengths of light emitted by the light-emitting units in light-emitting assembly 1 are equal. Therefore, within the range covered by the light emitted by light-emitting assembly 1, the communication device can perceive a single object. However, in the third example, because light-emitting assembly 1 includes light-emitting units with different wavelengths, the communication device can perceive multiple objects within the range covered by the light emitted by light-emitting assembly 1. In this way, within the same coverage area, the light source array can achieve more fine-grained perception.

[0167] Building on the light source array described in the above embodiments, to further enhance the functionality of the light source array, in some embodiments, each light-emitting component can correspond to an impedance circuit and at least one first switch. The at least one first switch is used to connect the light-emitting component or the impedance circuit corresponding to the light-emitting component. This design allows the communication device to selectively use any one or more light-emitting components in the light source array by controlling the first switch, providing high flexibility.

[0168] In some embodiments, the first switch may be a single-pole double-throw switch. Exemplarily, the communication device may control at least one first switch corresponding to each light-emitting component to connect the light-emitting component and disconnect the impedance circuit corresponding to the light-emitting component, thereby turning on and off the impedance circuit corresponding to the light-emitting component, so that the communication device can use the light-emitting component. Similarly, the communication device may control at least one first switch corresponding to each light-emitting component to connect the impedance circuit corresponding to the light-emitting component and disconnect the light-emitting component, thereby connecting the impedance circuit corresponding to the light-emitting component and disconnecting the light-emitting component, so that the communication device can stop using the light-emitting component.

[0169] In some embodiments, when all light-emitting components in a light source array are turned on, the capacitance of the light source array remains unchanged compared to the capacitance of a single light-emitting component, as described in the above embodiments. When only one or more light-emitting components are turned on, to ensure that the capacitance of the light source array remains unchanged, the difference between the impedance of the impedance circuit corresponding to the light-emitting component and the impedance of the light-emitting component can be set to be within a preset range. In some embodiments, this preset range can be referred to as a first preset range.

[0170] For example, the impedance of the impedance circuit corresponding to the light emitting component and the impedance of the light emitting component may satisfy the following formula 1: Z1 = (1 ± q)·Z2 Formula 1

[0171] Wherein, Z1 represents the impedance of the impedance circuit corresponding to the light-emitting component, Z2 represents the impedance of the light-emitting component, and q is a coefficient constant.

[0172] In some embodiments, for example, q may be 15%.

[0173] Exemplarily, the light source array includes light-emitting component 1, light-emitting component 2, light-emitting component 3, and light-emitting component 4. For example, when light-emitting component 1 is turned off, the impedance circuit corresponding to light-emitting component 1 is turned on. Because the difference between the impedance of the impedance circuit corresponding to light-emitting component 1 and the impedance of light-emitting component 1 is within a first preset range, the difference between the capacitance generated when the impedance circuit is turned on and the capacitance generated when light-emitting component 1 is turned on is within a second preset range, which can ensure that the capacitance of the light source array remains substantially unchanged, thereby ensuring the bandwidth of the light source array. It should be understood that the capacitance of the light source array remains substantially unchanged, which can be understood as: the difference between the capacitance of the light source array and the capacitance of a light-emitting component (or a light-emitting unit) is within a third preset range.

[0174] In some embodiments, the impedance of the impedance circuit corresponding to the light-emitting component can be set to be equal to the impedance of the light-emitting component. In this way, when the light-emitting component is turned off, the capacitance generated when the impedance circuit is turned on is equal to the capacitance generated when the light-emitting component is turned on. This can ensure that the capacitance of the light source array remains unchanged when the communication device turns on one or more light-emitting components.

[0175] In some embodiments, each light-emitting component may correspond to an impedance circuit and a first switch. For each light-emitting component, the active end of the first switch is used to connect to the first end of the light-emitting component or the first end of the impedance circuit, and the second end of the light-emitting component is connected to the second end of the impedance circuit. When the active end of the first switch is connected to the light-emitting component, the light-emitting component is turned on and the impedance circuit is turned off; when the active end of the first switch is connected to the impedance circuit, the impedance circuit is turned on and the light-emitting component is turned off. FIG5A takes the example of a light source array including 2×2 light-emitting components and each light-emitting component including 2×2 light-emitting units to introduce the connection method of the first switch (such as K1), the light-emitting component, and the impedance circuit. It should be understood that FIG5A and FIG5B take the impedance circuit as an example of a box.

[0176] In some embodiments, each light-emitting component may correspond to an impedance circuit and two first switches, and the two first switches are switch 1 (K1) and switch 2 (K2). For each light-emitting component, the active end of K1 is used to connect to the first end of the light-emitting component or the first end of the impedance circuit, and the active end of K2 is used to connect to the second end of the light-emitting component and the second end of the impedance circuit. When the active end of K1 is connected to the first end of the light-emitting component and the active end of K2 is connected to the second end of the light-emitting component, the light-emitting component is turned on and the impedance circuit is turned off. When the active end of K1 is connected to the first end of the impedance circuit and the active end of K2 is connected to the second end of the impedance circuit, the impedance circuit is turned on and the light-emitting component is turned off. FIG5B takes the example of a light source array including 2×2 light-emitting components and each light-emitting component including 2×2 light-emitting units to introduce the connection method of K1, K2, the light-emitting component, and the impedance circuit.

[0177] The following describes the structure of the impedance circuit corresponding to each light-emitting component:

[0178] In some embodiments, taking into account circuit parasitic effects, the impedance circuit may include a first capacitor or a first resistor. When the impedance circuit includes a first capacitor, the first end of the first capacitor may be considered as the first end of the impedance circuit, and the second end of the first capacitor may be considered as the second end of the impedance circuit. When the impedance circuit includes a first resistor, the first end of the first resistor may be considered as the first end of the impedance circuit, and the second end of the first resistor may be considered as the second end of the impedance circuit.

[0179] For example, taking the light-emitting components corresponding to K1 and K2, and the impedance circuit including the first capacitor C1 as an example, for each light-emitting component, K1 is respectively connected to the first end of the light-emitting component and the first end of the first capacitor C1, and K2 is respectively connected to the second end of the light-emitting component and the second end of the first capacitor C1.

[0180] In some embodiments, without considering circuit parasitic effects, the impedance circuit may include: a second resistor, a third resistor, and a second capacitor, wherein the second resistor and the third resistor are connected in series, and the second resistor and the second capacitor are connected in parallel.

[0181] For example, taking the light-emitting components corresponding to K1 and K2 as an example, referring to FIG6A , for each light-emitting component, K1 is respectively connected to the first end of the light-emitting component and the first end of the third resistor R3, and K2 is respectively connected to the other end of the light-emitting component, the first end of the second capacitor C2, and the first end of the second resistor R2. The second end of the third resistor R3 is respectively connected to the second end of the second capacitor C2 and the second end of the second resistor R2.

[0182] In some embodiments, the impedance circuit may include at least one light emitting unit.

[0183] In some embodiments, the impedance circuit is an array composed of at least one light emitting unit. For example, the impedance circuit is an array composed of a×b light emitting units, where a is an integer greater than or equal to 2 and b is an integer greater than or equal to 2. Referring to FIG6B , taking a as 2 and b as 2 as an example, the impedance circuit is an array composed of 2×2 light emitting units.

[0184] In some embodiments, a may be equal to or different from m, and b may be equal to or different from n.

[0185] In the embodiment of the present application, when the impedance circuit includes at least one light-emitting unit, the impedance circuit can also emit light, which can further increase the power of the light source.

[0186] In the embodiment of the present application, the communication device can selectively use one or more light-emitting components in the light source array to emit light. This light source design can be applied to different scenarios.

[0187] Before introducing the scene, let's first introduce the principle of how light emitted by the light source array forms a light spot:

[0188] 7 , the communication device may include a light source array 71 and a lens 72 . The light source array 71 is configured to emit light. Light 73 emitted by the light source array 71 is emitted through the lens 72 to form a light spot 74 .

[0189] Scenario 1:

[0190] When the light source array is at a first distance from the lens, the light emitted by the light-emitting units in each light-emitting assembly forms a light spot after passing through the lens. Because the light-emitting units in each light-emitting assembly are relatively close to each other, the light spot corresponding to each light-emitting assembly can be considered as the collection of light spots formed by the light emitted by the light-emitting units in that light-emitting assembly.

[0191] For example, taking a light source array comprising 2×2 light-emitting components, and each light-emitting component comprising 2×2 light-emitting units, as an example, with reference to FIG8A , the light emitted by the light-emitting units in each light-emitting component can form a light spot through a lens, and each of the four light-emitting components can correspond to a light spot 1. Because each light-emitting component comprises four light-emitting units, the light emitted by each light-emitting unit can form a small light spot 2 through a lens, that is, each light spot 1 can include four light spots 2. The size of light spot 1 is smaller than that of light spot 2. FIG8A uses an enlarged schematic diagram of a light spot 1 to illustrate that each light spot 1 can include four light spots 2.

[0192] It should be understood that because the light-emitting units in each light-emitting assembly are relatively close to each other, the four light spots 2 partially or completely overlap, forming a large light spot 1. Furthermore, because the distances between different light-emitting assemblies are relatively large, the light spots 1 corresponding to each light-emitting assembly do not overlap. For example, within each light-emitting assembly, the distance between two adjacent light-emitting units is 5-250 μm. The distance between two adjacent light-emitting assemblies is 20-500 μm.

[0193] Because the light spots corresponding to different light-emitting components cover different ranges, this light source array can be applied to tracking scenarios:

[0194] FIG8B is a schematic diagram of a system architecture applicable to a tracking scenario provided by an embodiment of the present application. Referring to FIG8B , the system architecture may include a communication device 81 and an object 82 .

[0195] In some embodiments, in a sensing scenario, communication device 81 may be a terminal device or access network device, for example, a radar device. Object 82 may include, but is not limited to, a user, an animal, a vehicle, etc. For example, if object 82 is a user, communication device 81 is used to track the user. The light spots corresponding to different light-emitting components cover different ranges. For example, the light spot corresponding to light-emitting component 1 may cover area 1, while the light spot corresponding to light-emitting component 2 may cover area 2.

[0196] Referring to a in Figure 8B, when the user is at position 1, which is within area 1, the communication device 81 can control the light-emitting unit in the light-emitting component 1 to emit light, ensuring that the communication device 81 can sense the user. In addition, to reduce the power consumption of the communication device 81, the communication device 81 can control the light-emitting units in other light-emitting components to not emit light. Exemplarily, the communication device 81 can control the first switch corresponding to the light-emitting component 1 to connect, turn on the light-emitting component 1, and turn off the impedance circuit corresponding to the light-emitting component 1, and control the first switches corresponding to the other light-emitting components to turn on the impedance circuits corresponding to the other light-emitting components and turn off the other light-emitting components. The method of turning on the light-emitting components and the impedance circuits corresponding to the light-emitting components can refer to the description in the above embodiment.

[0197] For example, referring to b in FIG8B , when the user moves to position 2, position 2 is within area 2, and the communication device 81 can control the light-emitting unit in the light-emitting component 2 to emit light, and control the light-emitting units in other light-emitting components not to emit light.

[0198] In the embodiment of the present application, the communication device 81 can control the light-emitting units in the light-emitting assembly covering the location to emit light according to the location of the user, thereby achieving dynamic tracking of the user.

[0199] Figure 8C is a schematic diagram of a system architecture applicable to the communication scenario provided in an embodiment of the present application. Referring to Figure 8C, the system architecture may include a communication device 81 and an object 82. The communication device 81 may be, for example, an access network device or a terminal device, and the object 82 may be a terminal device. In Figure 8C, the communication device 81 is taken as a base station, and the object 82 is taken as a terminal device (such as a mobile phone) as an example. Among them, the communication device 81 can communicate with multiple objects 82, and the following is an example of the communication process between the communication device 81 and an object 82. Among them, the process in which the communication device 81 can communicate with multiple objects 82 can be referred to the description in Figures 11 to 12D.

[0200] In the communication scenario, the communication device 81 can track the object 82 so that the light emitted by the communication device 81 can cover the object 82, thereby improving the communication quality between the communication device 81 and the object 82.

[0201] For example, when object 82 is at position 1, communication device 81 can control the light-emitting unit in light-emitting assembly 1 to emit light, and control the light-emitting units in other light-emitting assemblies not to emit light. When object 82 moves to position 2, communication device 81 can control the light-emitting unit in light-emitting assembly 2 to emit light, and control the light-emitting units in other light-emitting assemblies not to emit light.

[0202] In conjunction with this scenario 1, an embodiment of the present application provides a communication method, which is applied to a communication device. In some embodiments, referring to FIG8D , in addition to a light source array 71 and a lens 72 , the communication device may also include: a signal source 71A and a controller 72A. The signal source 71A is configured to send a control signal to the controller 72A. The controller 72A is configured to control at least one first switch corresponding to each light-emitting component based on the control signal to turn on the light-emitting component or the impedance circuit corresponding to the light-emitting component.

[0203] 8E , the communication method provided in the embodiment of the present application may include:

[0204] S801: Receive a third control signal.

[0205] The controller may receive a third control signal from a signal source, where the third control signal is used to instruct to turn on the second target light-emitting component.

[0206] It should be understood that the embodiments of the present application do not limit how the communication device detects the position of an object. For example, when the object is at position 1, the signal source may send a third control signal to the controller, the third control signal being used to instruct the controller to turn on light-emitting component 1, which can be considered the second target light-emitting component.

[0207] S802 , turning on the second target light-emitting component to enable the light source array to emit a third light beam, where the third light beam covers the first position.

[0208] In response to the third control signal, the controller can control the first switch corresponding to the second target light-emitting component so that the active end of the first switch is connected to the second target light-emitting component, thereby turning on the second target light-emitting component. In addition, in response to the third control signal, the controller can also control the first switches corresponding to other light-emitting components to turn off the other light-emitting components.

[0209] The controller turns on the second target light-emitting assembly, causing the light-emitting units in the second target light-emitting assembly to emit light, enabling the light source array to emit a third light beam. The light emitted by the light-emitting units in the second target light-emitting assembly constitutes the third light beam emitted by the light source array. The third light beam can cover the first position. Furthermore, the third light beam passes through the lens to form a third light spot, which can also cover the first position.

[0210] In some embodiments, the second target light-emitting component may include at least one light-emitting component.

[0211] S803: Receive a fourth control signal.

[0212] In a scene where an object moves, the position of the object keeps changing. As the position of the object changes, the communication device may select a light-emitting component that can cover the position of the object to emit light.

[0213] The controller may receive a fourth control signal from the signal source, the fourth control signal being used to instruct the third target light-emitting component to be turned on. For example, when the object moves from position 1 to position 2, the signal source may send a fourth control signal to the controller, the fourth control signal being used to instruct the controller to turn on light-emitting component 2, which may be considered the third target light-emitting component.

[0214] S804 , turning on the third target light-emitting component to enable the light source array to emit a fourth light beam, where the fourth light beam covers the second position.

[0215] In response to the fourth control signal, the controller may control the first switch corresponding to the third target light-emitting component so that the active end of the first switch is connected to the third target light-emitting component, thereby turning on the third target light-emitting component. Furthermore, in response to the fourth control signal, the controller may also control the first switches corresponding to other light-emitting components in the light source array to turn off the other light-emitting components.

[0216] The controller turns on the third target light-emitting assembly, causing the light-emitting units in the third target light-emitting assembly to emit light, thereby enabling the light source array to emit a fourth light beam. The light emitted by the light-emitting units in the third target light-emitting assembly constitutes the fourth light beam emitted by the light source array. The fourth light beam can cover the second position, which is different from the first position. Furthermore, the fourth light beam passes through the lens to form a fourth light spot, which can also cover the second position.

[0217] In some embodiments, the third target light-emitting component may include at least one light-emitting component.

[0218] In the embodiment of the present application, when the light source array is at a first distance from the lens, the communication device can turn on the light-emitting component corresponding to the position of the object, thereby achieving dynamic tracking of the object.

[0219] Scenario 2: When the light source array is at a second distance from the lens, because the communication device in this embodiment can selectively use one or more light-emitting components, for example, the communication device can use i light-emitting components in the light source array to emit light, and the light emitted by the light-emitting units in the i light-emitting components passes through the lens to form a light spot. Where i is an integer greater than or equal to 1 and less than or equal to M×N.

[0220] For example, assuming that a light source array includes 2×2 light-emitting assemblies, and each light-emitting assembly includes 2×2 light-emitting units, referring to FIG9A , and assuming i is 4, the light-emitting units in all light-emitting assemblies in the light source array emit light. The light emitted by the four light-emitting assemblies passes through the lens to form a light spot 3. Each light-emitting assembly corresponds to a light spot 4, and light spot 3 can be formed by partially or fully overlapping light spots 4.

[0221] Because the light emitted by the light-emitting units in i light-emitting components passes through the lens to form a light spot, the larger the i, the greater the power of the light source, or the greater the power of the light spot, that is, the power of the light spot is related to i. In this embodiment of the present application, the communication device can select one or more light-emitting components to emit light, and can adjust the power of the light emitted by the light source array. This example is applicable to power adjustment scenarios.

[0222] Scenarios where object positions change:

[0223] When an object is within the coverage of the light spot but the distance between the object and the communication device changes, the communication device can adjust the number of light-emitting components used, thereby ensuring communication quality and perception accuracy. For example, when the distance between the object and the communication device is getting closer, the communication device can reduce the number of light-emitting components used, and when the distance between the object and the communication device is getting farther, the communication device can increase the number of light-emitting components used.

[0224] For example, if an object is within the coverage of light spot 3 and at position 3, the distance between the object and the communication device is d1, and the communication device can control the light-emitting units in the four light-emitting assemblies to emit light. When the object moves to position 4, the object is still within the coverage of light spot 3, and the distance between the object and the communication device is d2, which is less than d1. Because the object is still within the coverage of light spot 3 and the distance between the object and the communication device has decreased, the communication quality will not be reduced when the communication device reduces the power of the light source array. Therefore, to reduce power consumption, the communication device can reduce the number of light-emitting assemblies used. For example, communication device 81 can control the light-emitting units in light-emitting assembly 1 and light-emitting assembly 2 to emit light.

[0225] Scenes where the object's position remains unchanged:

[0226] For example, when an object is within the coverage of light spot 3 and is at position 3, the communication device can control the light-emitting units in the four light-emitting components to emit light. For example, when the battery of the communication device is low, in order to reduce power consumption and increase standby time, the communication device can reduce the number of light-emitting components used. For example, the communication device 81 can control the light-emitting units in light-emitting components 1 and 2 to emit light.

[0227] In conjunction with the second scenario, an embodiment of the present application provides a communication method, and the execution subject of the communication method may be the controller 72A. Referring to FIG9B , the communication method provided by the embodiment of the present application may include:

[0228] S901: Receive a fifth control signal.

[0229] The controller may receive a fifth control signal from the processor, the fifth control signal being used to instruct to turn on the fourth target light-emitting component. In some embodiments, the fourth target light-emitting component may include at least one light-emitting component.

[0230] Exemplarily, when the user is at position 2, the processor may send a fifth control signal to the controller, where the fifth control signal is used to instruct to turn on four light-emitting components, which may be regarded as fourth target light-emitting components.

[0231] S902 , turning on the fourth target light-emitting component to enable the light source array to emit a fifth light beam.

[0232] In response to the fifth control signal, the controller may control the first switch corresponding to the fourth target light-emitting component so that the active end of the first switch is connected to the fourth target light-emitting component, thereby turning on the fourth target light-emitting component. Furthermore, in response to the fifth control signal, the controller may also control the first switches corresponding to other light-emitting components in the light source array to turn off the other light-emitting components.

[0233] The controller turns on the fourth target light emitting assembly, and the light emitting units in the fourth target light emitting assembly can emit light, enabling the light source array to emit a fifth light beam. The light emitted by the light emitting units in the fourth target light emitting assembly is the fifth light beam emitted by the light source array.

[0234] S903: Receive a sixth control signal.

[0235] The controller may receive a sixth control signal from the processor, where the sixth control signal is used to instruct to turn on the fifth target light-emitting component.

[0236] In some embodiments, the fifth target light emitting assembly may include at least one light emitting assembly, and the number of the fifth target light emitting assembly is different from the number of the fourth target light emitting assembly. For example, the number of the fifth target light emitting assembly may be greater or less than the number of the fourth target light emitting assembly.

[0237] Exemplarily, when the user is in position 4, the processor may send a sixth control signal to the controller, and the sixth control signal is used to instruct to turn on the light-emitting component 1 and the light-emitting component 2. The light-emitting component 1 and the light-emitting component 2 can be regarded as the fifth target light-emitting component, and the number 2 of the fifth target light-emitting component is less than the number 4 of the fourth target light-emitting component.

[0238] S904 , turning on the fifth target light-emitting component to enable the light source array to emit a sixth light beam. The number of the fourth target light-emitting components is different from the number of the fifth target light-emitting components.

[0239] In response to the sixth control signal, the controller may control the first switch corresponding to the fifth target light-emitting component so that the active end of the first switch is connected to the fifth target light-emitting component, thereby turning on the fifth target light-emitting component. Furthermore, in response to the sixth control signal, the controller may also control the first switches corresponding to other light-emitting components in the light source array to turn off the other light-emitting components.

[0240] The controller turns on the fifth target light-emitting assembly, causing the light-emitting units in the fifth target light-emitting assembly to emit light, enabling the light source array to emit a sixth light beam. The light emitted by the light-emitting units in the fifth target light-emitting assembly constitutes the sixth light beam emitted by the light source array. Because the number of fifth target light-emitting assemblies differs from the number of fourth target light-emitting assemblies, the power of the fifth and sixth light beams differs. Accordingly, the fifth light beam passes through the lens to form a fifth light spot, and the sixth light beam passes through the lens to form a sixth light spot. The power of the fifth and sixth light spots differs.

[0241] Exemplarily, when the number of the fifth target light-emitting components, 2, is less than the number of the fourth target light-emitting components, 4, the power of the fifth light beam is less than the power of the sixth light beam.

[0242] In the embodiment of the present application, when the light source array is at the second distance from the lens, the communication device can control the power of light emitted by the light source array by controlling the number of light-emitting components that are turned on, which is highly flexible.

[0243] In some embodiments, in a communication device, the distance between the light source array and the lens can be set to a fixed distance, where the fixed distance is the first distance or the second distance. For example, if the communication device is primarily used for tracking a user, the distance between the light source array and the lens can be set to the first distance.

[0244] In some embodiments, the distance between the light source array and the lens of the communication device is adjustable. For example, in a tracking scenario, the distance between the light source array and the lens can be adjusted to a first distance, so that the communication device can dynamically track the object based on the user's location using a light-emitting component covering that location. For example, the communication device can adjust the distance between the light source array and the lens to a second distance, so that the communication device can select one or more light-emitting components to adjust the power of the light emitted by the light source array, providing high flexibility.

[0245] When the impedance circuit includes at least one light-emitting unit, since the impedance circuit can also emit light, the communication device can also use the impedance circuit to achieve sensing and communication.

[0246] In some embodiments, the wavelengths of light emitted by the light-emitting units in all impedance circuits are equal. For example, in a light source array comprising 2×2 light-emitting components, each light-emitting component comprising 2×2 light-emitting units, each light-emitting component corresponding to one impedance circuit, the light source array comprising four impedance circuits, and the wavelengths of light emitted by the light-emitting units in the four impedance circuits are equal.

[0247] In some embodiments, the wavelengths of light emitted by the light-emitting units in each impedance circuit are equal, and there are at least two impedance circuits whose light-emitting units emit light of different wavelengths. Exemplarily, the light source array includes four impedance circuits, namely impedance circuit 1, impedance circuit 2, impedance circuit 3, and impedance circuit 4. For example, the wavelengths of light emitted by the light-emitting units in impedance circuit 1 and impedance circuit 2 are different, and the wavelengths of light emitted by the light-emitting units in impedance circuit 1, impedance circuit 3, and impedance circuit 4 are equal. For example, the wavelengths of light emitted by the light-emitting units in impedance circuit 1, impedance circuit 2, impedance circuit 3, and impedance circuit 4 are different, such as the light emitted by the light-emitting unit in impedance circuit 1 is 850 nm, the light emitted by the light-emitting unit in impedance circuit 2 is 940 nm, the light emitted by the light-emitting unit in impedance circuit 3 is 1310 nm, and the light emitted by the light-emitting unit in impedance circuit 4 is 1550 nm.

[0248] Referring to the description of "the wavelength of light emitted by the light-emitting unit in the light-emitting component", in some embodiments, when the communication device turns off all the light-emitting components in the light source array, the communication device can use the light emitted by the impedance circuit for perception and communication. For details, please refer to the description of "one to three" in the above embodiments.

[0249] Because both the impedance circuit and the light-emitting component can emit light, in the embodiment of the present application, the wavelength of the light emitted by the impedance circuit and the wavelength of the light emitted by the light-emitting component can be pre-set to achieve perception of different granularities.

[0250] In some embodiments, in the light source array, the wavelength of light emitted by the light-emitting units in at least one impedance circuit is equal to the wavelength of light emitted by the light-emitting units in at least one light-emitting assembly. In an extreme case, the wavelength of light emitted by the light-emitting units in the impedance circuit is equal to the wavelength of light emitted by the light-emitting units in the light-emitting assembly. For example, the wavelength of light emitted by all four impedance circuits is 850 nm, and the wavelength of light emitted by all four light-emitting assemblies is 850 nm.

[0251] For example, the wavelength of light emitted by the light-emitting unit in impedance circuit 1 is 850 nm, the wavelength of light emitted by the light-emitting unit in impedance circuit 2 is 940 nm, the wavelength of light emitted by the light-emitting unit in impedance circuit 3 is 1310 nm, and the wavelength of light emitted by the light-emitting unit in impedance circuit 4 is 1550 nm. The wavelength of light emitted by all four light-emitting components is 850 nm. The wavelength of light emitted by the light-emitting unit in impedance circuit 1 is equal to the wavelength of light emitted by the four light-emitting components. The wavelength of light emitted by the light-emitting units in the remaining impedance circuits is different from the wavelength of light emitted by the four light-emitting components.

[0252] For example, the wavelength of light emitted by the light-emitting unit in impedance circuit 1 is 850 nm, the wavelength of light emitted by the light-emitting unit in impedance circuit 2 is 940 nm, the wavelength of light emitted by the light-emitting unit in impedance circuit 3 is 1310 nm, and the wavelength of light emitted by the light-emitting unit in impedance circuit 4 is 1550 nm. The wavelength of light emitted by light-emitting component 1 is 850 nm, and the wavelength of light emitted by the other light-emitting components is not 850 nm. The wavelength of light emitted by the light-emitting unit in impedance circuit 1 is equal to the wavelength of light emitted by light-emitting component 1.

[0253] As in the above two examples, it can also be said that in the light source array, the wavelength of light emitted by the light-emitting unit in at least one impedance circuit is different from the wavelength of light emitted by the light-emitting unit in at least one light-emitting component.

[0254] In an extreme case, the wavelength of light emitted by the light-emitting unit in the non-impedance circuit is equal to the wavelength of light emitted by the light-emitting unit in the light-emitting assembly. For example, the wavelength of light emitted by the four impedance circuits is 850 nm, and the wavelength of light emitted by the four light-emitting assemblies is 940 nm.

[0255] The following three examples illustrate possible settings for the wavelength of light emitted by the impedance circuit and the wavelength of light emitted by the light-emitting component:

[0256] Example 1:

[0257] Referring to Figure 10A , the wavelength of light emitted by the four light-emitting assemblies is 850 nm, and the wavelength of light emitted by the light-emitting units in the four impedance circuits is 940 nm. In this example, the light source array can emit light of two wavelengths. In Figure 10A , for the light-emitting assemblies, the wavelengths of light emitted by the light-emitting units are equal, and for the impedance circuits, the wavelengths of light emitted by the light-emitting units in the impedance circuits are equal. There is no case where the wavelength of light emitted by a light-emitting unit in the impedance circuit is equal to the wavelength of light emitted by a light-emitting unit in the light-emitting assemblies.

[0258] This light source array can be used for sensing a single object. For example, the communication device can connect four light-emitting components, enabling the light source array to emit 850nm light, which can achieve the sensing of one object. For example, the communication device can connect four impedance circuits, enabling the light source array to emit 940nm light, which can achieve the sensing of another object.

[0259] Example 2:

[0260] 10B , the wavelength of light emitted by the light-emitting unit in impedance circuit 1 is 850 nm, the wavelength of light emitted by the light-emitting unit in impedance circuit 2 is 940 nm, the wavelength of light emitted by the light-emitting unit in impedance circuit 3 is 1310 nm, and the wavelength of light emitted by the light-emitting unit in impedance circuit 4 is 1550 nm. The wavelength of light emitted by the light-emitting unit in light-emitting component 1 and light-emitting component 3 is 940 nm, and the wavelength of light emitted by the light-emitting unit in light-emitting component 2 and light-emitting component 4 is 850 nm.

[0261] For the light-emitting components, the wavelengths of light emitted by the light-emitting units in each light-emitting component are equal, and there are at least two light-emitting components whose light-emitting units emit light of different wavelengths. For the impedance circuits, the wavelengths of light emitted by the light-emitting units in each impedance circuit are equal, and there are at least two light-emitting circuits whose light-emitting units emit light of different wavelengths. In Figure 10B, there is an impedance circuit whose wavelengths are equal to the wavelengths of light emitted by the light-emitting units in two light-emitting components, such as the wavelengths of light emitted by the light-emitting units in impedance circuit 1, light-emitting component 2, and light-emitting component 4 are equal, and the wavelengths of light emitted by the light-emitting units in impedance circuit 2, light-emitting component 1, and light-emitting component 3 are equal. It can also be said that there is at least one impedance circuit whose wavelengths are different from the wavelengths of light emitted by the light-emitting units in the light-emitting components, such as the wavelengths of light emitted by impedance circuit 3 are different from those of light-emitting units in all four light-emitting components.

[0262] This type of light source array can be suitable for scenarios where a variety of objects are perceived. The light source array can emit light of multiple wavelengths, and the communication device can choose to use light-emitting components and / or impedance circuits, thereby enabling the perception of a variety of objects.

[0263] Example 3:

[0264] 10C , the wavelengths of light emitted by the four light-emitting units in light-emitting assembly 1 are 850 nm, 940 nm, 1310 nm, and 1550 nm, respectively; the wavelengths of light emitted by the four light-emitting units in light-emitting assembly 2 are 850 nm, 940 nm, 1310 nm, and 1550 nm, respectively; the wavelengths of light emitted by the four light-emitting units in light-emitting assembly 3 are 850 nm, 940 nm, 1310 nm, and 1550 nm, respectively; and the wavelengths of light emitted by the four light-emitting units in light-emitting assembly 4 are 850 nm, 940 nm, 1310 nm, and 1550 nm, respectively. The wavelength of light emitted by the light-emitting units in impedance circuit 1 is 850 nm, the light-emitting units in impedance circuit 2 is 940 nm, the light-emitting units in impedance circuit 3 is 1310 nm, and the light-emitting units in impedance circuit 4 is 1550 nm.

[0265] In Figure 10C, for the light-emitting assembly, the wavelengths of light emitted by different light-emitting units in each light-emitting assembly are different. For the impedance circuit, the wavelengths of light emitted by the light-emitting units in each impedance circuit are equal, and there are at least two impedance circuits where the light-emitting units emit light of different wavelengths.

[0266] This light source array can be used in scenarios where perception accuracy can be adjusted. Referring to a in FIG10D , when the communication device conducts four impedance circuits, the light emitted by each impedance circuit forms a light spot 3 through the lens. Because the wavelengths of light emitted by the light-emitting units in each impedance circuit are equal, the communication device can perceive an object within the coverage area of ​​a light spot 3. In this embodiment, different shades represent light spots formed by light of different wavelengths.

[0267] Referring to b in Figure 10D, when the communication device can turn on the four light-emitting components in the light source array, the light emitted by each light-emitting component can form a light spot 1 through the lens. Because the wavelengths of light emitted by different light-emitting units in each light-emitting component are different, the light spot 1 can include the light spot 2 formed by the light emitted by the four light-emitting units through the lens. The communication device can perceive four objects within the coverage range of one light spot 3.

[0268] Taking each impedance circuit including 2×2 light-emitting units as an example, under the premise that the coverage of a light spot 3 and a light spot 1 are equal, the communication device can achieve more fine-grained perception when using the light-emitting component to perceive the object. Therefore, in the embodiment of the present application, when the communication device needs to achieve coarse-grained perception, the communication device can turn on four impedance circuits, and when the communication device needs to achieve fine-grained perception, the communication device can turn on four light-emitting components.

[0269] In conjunction with the examples shown in Figures 10C and 10D, an embodiment of the present application provides a communication method, and the execution subject of the communication method may be the controller 72A. Referring to Figure 10E, the communication method provided by the embodiment of the present application may include:

[0270] S1001, receive a first control signal.

[0271] In some embodiments, when the signal source determines to implement coarse-grained sensing, the signal source may send a first control signal to the controller, the first control signal being used to instruct to turn on a target impedance circuit, which includes at least one impedance circuit in the light source array.

[0272] Accordingly, the controller may receive a first control signal from the signal source. It should be understood that the embodiments of the present application do not limit how the signal source determines the method for achieving coarse-grained perception and fine-grained perception.

[0273] S1002 , turning on the target impedance circuit to enable the light source array to emit at least one first light beam.

[0274] In response to the first control signal, the controller may control a first switch corresponding to the target impedance circuit so that an active end of the first switch is connected to the target impedance circuit, thereby turning on the target impedance circuit. Furthermore, in response to the first control signal, the controller may also control first switches corresponding to other impedance circuits in the light source array to turn off the other impedance circuits.

[0275] Exemplarily, referring to a in FIG. 10D , the target impedance circuit may include four impedance circuits.

[0276] The controller turns on the target impedance circuit, causing the light-emitting units in the target impedance circuit to emit light, thereby enabling the light source array to emit at least one first light beam. The light emitted by the light-emitting units in the target impedance circuit is the at least one first light beam emitted by the light source array, and the light emitted by the light-emitting units in one impedance circuit in the target impedance circuit is one first light beam emitted by the light source array. The diameter of the first light beam can be a first diameter.

[0277] The first light beam may form a first light spot after passing through the lens, and the size of the first light spot is a first size.

[0278] S1003: Receive a second control signal.

[0279] In some embodiments, when the signal source determines that fine-grained perception is achieved, the signal source may send a second control signal to the controller, the second control signal being used to instruct to turn on the first target light-emitting component. The first target light-emitting component may include at least one light-emitting component.

[0280] Accordingly, the controller may receive a second control signal from a signal source.

[0281] S1004 , turning on the first target light-emitting component to enable the light source array to emit at least one second light beam, each second light beam including m×n sub-beams, and a diameter of the sub-beam is smaller than a diameter of the first light beam.

[0282] In response to the second control signal, the controller may control the first switch corresponding to the first target light-emitting component so that the active end of the first switch is connected to the first target light-emitting component, thereby turning on the first target light-emitting component. In addition, in response to the first control signal, the controller may also control the first switches corresponding to other light-emitting components in the light source array to turn off the other light-emitting components.

[0283] Exemplarily, referring to b in FIG. 10D , the first target light-emitting component may include four light-emitting components.

[0284] The controller turns on the first target light-emitting assembly, causing the light-emitting units in the first target light-emitting assembly to emit light, thereby enabling the light source array to emit at least one second light beam. The light emitted by the light-emitting units in the first target light-emitting assembly is the at least one second light beam emitted by the light source array, and the light emitted by the light-emitting units in one of the light-emitting assemblies in the first target light-emitting assembly is one of the second light beams emitted by the light source array.

[0285] The number of second beams is equal to the number of first target light-emitting components. Because the wavelengths of light emitted by different light-emitting units in each light-emitting component are different, each second beam can include m×n (e.g., 2×2) sub-beams, each of which can have a second diameter that is smaller than the first diameter. Each sub-beam can be used to perceive a specific object, enabling more granular perception.

[0286] It should be understood that the embodiment of the present application does not limit the order of S1001 - S1002 and S1003 - S1004 .

[0287] In an embodiment of the present application, the wavelength of light emitted by the light-emitting unit in the light-emitting component and the wavelength of light emitted by the light-emitting unit in the impedance circuit can be pre-configured, so that the light source array can be applied to different scenarios, and when the wavelengths of light emitted by different light-emitting units in the light-emitting component are different, the communication device can also achieve perception of different granularities.

[0288] As described in the above embodiments, a communication device may include a light source array. Based on this light source array, the communication device can achieve communication with an object and can also achieve perception of one or more objects. In some embodiments, the communication device may be configured with at least multiple light source arrays to achieve communication between the communication device and multiple objects. The structure of each light source array can refer to the description in the above embodiments.

[0289] The communication device may include multiple light source arrays. For different light source arrays, the light-emitting units in the first row of the first row of light-emitting assemblies are connected to different signal input terminals. In other words, each light source array corresponds to a signal input terminal. In each light source array, the light-emitting units in the first row of the first row of light-emitting assemblies may also be connected to a power input terminal, while the light-emitting units in the mth row of the Mth row of light-emitting assemblies are connected to ground. In some embodiments, the signal input terminal can be considered a signal source.

[0290] Among them, the signal input terminal can input a communication signal to the light source array, and the light source array can emit light to transmit the communication signal, thereby realizing communication between the communication device and the object. Exemplarily, referring to Figure 11, the communication device includes a light source array 1 and a light source array 2, light source array 1 corresponds to signal input terminal 1 (Vsig1), and light source array 2 corresponds to signal input terminal 2 (Vsig2). When the communication device communicates with object 1 and object 2 at the same time, the communication device can input communication signal 1 to light source array 1 through signal input terminal 1, so that the light source array can emit light to transmit the communication signal 1, thereby realizing that the communication device transmits communication signal 1 to object 1. The communication device can use signal input terminal 2 to input communication signal 2 to light source array 2, so that the light source array can emit light to transmit the communication signal 2, thereby realizing that the communication device transmits communication signal 2 to object 2. In this way, the communication device can realize communication with different objects through different light source arrays.

[0291] It should be understood that FIG11 illustrates the light-emitting components in the light source array, but does not illustrate the impedance circuit and at least one first switch corresponding to each light-emitting component. For this purpose, reference should be made to the descriptions in the above embodiments. It should be understood that FIG12A-12C below also illustrate the light-emitting components in the light source array, but does not illustrate the impedance circuit and at least one first switch corresponding to each light-emitting component.

[0292] In some embodiments, to improve the utilization of light-emitting assemblies and the flexibility of communication coverage, the communication device can use light-emitting assemblies in different light source arrays to transmit communication signals. In each light source array, the light-emitting units in the mth row of the i-th row of light-emitting assemblies are connected to a second switch, and the light-emitting units in the first row of the i+1-th row of light-emitting assemblies are connected to a third switch. Here, i is an integer greater than or equal to 1 and less than or equal to M-1.

[0293] In some embodiments, the second switch may be a radio frequency switch, and the third switch may be a radio frequency switch.

[0294] For any light source array in the communication device, the second switch corresponding to the i-th row of light-emitting components in one light source array is connected to the third switch corresponding to the i+1-th row of light-emitting components in the same light source array, and to the third switch corresponding to the i+1-th row of light-emitting components in another light source array. For example, the communication device may include a first light source array. Taking the first light source array as an example, the second switch corresponding to the i-th row of light-emitting components in the first light source array is connected to the third switch corresponding to the i+1-th row of light-emitting components in the first light source array, and to the third switch corresponding to the i+1-th row of light-emitting components in another light source array.

[0295] Taking a communication device comprising two light source arrays, each comprising 2×2 light-emitting assemblies, and each light-emitting assembly comprising 2×2 light-emitting units as an example, referring to FIG12A , the two light source arrays in the communication device are light source array 1 and light source array 2. Light source array 1 corresponds to signal input terminal 1, and light source array 2 corresponds to signal input terminal 2. In light source array 1, the light-emitting assemblies in the first row correspond to a second switch RF2, and the light-emitting assemblies in the second row correspond to a third switch RF3. In light source array 2, the light-emitting assemblies in the first row correspond to a second switch RF2A, and the light-emitting assemblies in the second row correspond to a third switch RF3A. RF2 is connected to RF3 and RF3A, respectively, and RF2A is connected to RF3 and RF3A, respectively.

[0296] When the communication device is connected to RF2 and RF3, and to RF2A and RF3A, the communication device can transmit a first communication signal using light emitted by the four light-emitting components in light source array 1, and can transmit a second communication signal using light emitted by the four light-emitting components in light source array 2. The first communication signal comes from signal input terminal 1, and the second communication signal comes from signal input terminal 2.

[0297] Referring to Figure 12A, when the communication device connects RF2 and RF3A, and connects RF2A and RF3, the communication device can use the light emitted by the light-emitting components in the first row of light source array 1 and the light-emitting components in the second row of light source array 2 to transmit a first communication signal, and the communication device can use the light-emitting components in the second row of light source array 1 and the light emitted by the light-emitting components in the first row of light source array 2 to transmit a second communication signal.

[0298] It should be understood that in FIG. 12A , the solid line indicates that the second switch and the third switch are connected.

[0299] Because the light emitted by different light-emitting components covers different ranges, in the embodiment of the present application, the communication device uses light-emitting components in different light source arrays to communicate with the object, which can not only improve the utilization rate of the light-emitting components, but also improve the coverage range of optical communication.

[0300] Taking Figure 12A as an example, when the communication device is connected to RF2 and RF3, the communication device can communicate with objects within the coverage area of ​​light source array 1. When the communication device is connected to RF2 and RF3A, the communication device can also communicate with objects within the coverage area of ​​the light-emitting components in the second row of light source array 2. It should be noted that because each light-emitting component corresponds to at least one first switch, when the communication device is connected to RF2 and RF3A, the communication device can also control at least one first switch to select some or all of the light-emitting components in the second row of light source array 2 to communicate with the object.

[0301] FIG12B takes an example in which a communication device includes three light source arrays, each of which includes 3×3 light-emitting components, and each light-emitting component includes 2×2 light-emitting units. Referring to FIG12B , the three light source arrays in the communication device are light source array 1, light source array 2, and light source array 3. Light source array 1 corresponds to signal input terminal 1, light source array 2 corresponds to signal input terminal 2, and light source array 3 corresponds to signal input terminal 3 (Vsig3). In light source array 1, the light-emitting components in the first row correspond to a second switch RF2, the light-emitting components in the second row correspond to a third switch RF3, the light-emitting components in the second row correspond to a second switch RF4, and the light-emitting components in the third row correspond to a third switch RF5.

[0302] Similarly, in light source array 2, the light-emitting components in the first row correspond to a second switch RF2A, the light-emitting components in the second row correspond to a third switch RF3A, the light-emitting components in the second row correspond to a second switch RF4A, and the light-emitting components in the third row correspond to a third switch RF5A. In light source array 3, the light-emitting components in the first row correspond to a second switch RF2B, the light-emitting components in the second row correspond to a third switch RF3B, the light-emitting components in the second row correspond to a second switch RF4B, and the light-emitting components in the third row correspond to a third switch RF5B.

[0303] For the first and second rows of light-emitting components in each light source array, RF2 is connected to RF3, RF3A, and RF3B, respectively; RF2A is connected to RF3, RF3A, and RF3B, respectively; and RF2B is connected to RF3, RF3A, and RF3B, respectively. For the second and third rows of light-emitting components in each light source array, RF4 is connected to RF5, RF5A, and RF5B, respectively; RF4A is connected to RF5, RF5A, and RF5B, respectively; and RF4B is connected to RF5, RF5A, and RF5B, respectively.

[0304] The following takes light source array 1 as an example:

[0305] For example, taking RF2 in the light source array 1 as an example, when the communication device connects RF2 and RF3, and connects RF4 and RF5, the communication device can use the light emitted by the 9 light-emitting components in the light source array 1 to transmit the first communication signal.

[0306] When the communication device connects RF2 and RF3A, and connects RF4 and RF5, the communication device can use the light emitted by the light-emitting components in the first row of light source array 1, the light-emitting components in the second row of light source array 2, and the light-emitting components in the third row of light source array 1 to transmit the first signal.

[0307] When the communication device is connected to RF2 and RF3B, and RF4 and RF5, the communication device can use the light emitted by the light-emitting components in the first row of light source array 1, the light-emitting components in the second row of light source array 3, and the light-emitting components in the third row of light source array 1 to transmit the first communication signal.

[0308] Referring to Figure 12B, when the communication device connects RF2 and RF3A, and connects RF4A and RF5B, the communication device can use the light emitted by the light-emitting components in the first row of light source array 1, the light-emitting components in the second row of light source array 2, and the light-emitting components in the third row of light source array 3 to transmit the first communication signal.

[0309] In the communication device shown in FIG12B , the communication device can communicate with three objects simultaneously. For example, the communication device can send a first communication signal to object 1, a second communication signal to object 2, and a third communication signal to object 3. The third communication signal comes from signal input terminal 3.

[0310] FIG12C takes an example in which a communication device includes z light source arrays, each of which includes z×z light-emitting components, and each light-emitting component includes 2×2 light-emitting units. Referring to FIG12C , the z light source arrays in the communication device are light source array 1, light source array 2, ..., light source array z. In light source array 1, the light-emitting components in the first row correspond to a second switch RF2, the light-emitting components in the second row correspond to a third switch RF3, the light-emitting components in the second row correspond to a second switch RF4, the light-emitting components in the third row correspond to a third switch RF5, the light-emitting components in the third row correspond to a second switch RF6, the light-emitting components in the fourth row correspond to a third switch RF7, ..., the light-emitting components in the z-1th row correspond to a second switch RFz-1, and the light-emitting components in the zth row correspond to a third switch RFz.

[0311] Similarly, in the light source array 2, the light-emitting components in the first row correspond to a second switch RF2A, the light-emitting components in the second row correspond to a third switch RF3A, the light-emitting components in the second row correspond to a second switch RF4A, the light-emitting components in the third row correspond to a third switch RF5A, the light-emitting components in the third row correspond to a second switch RF6A, the light-emitting components in the fourth row correspond to a third switch RF7A, ..., the light-emitting components in the z-1th row correspond to a second switch RFz-1A, and the light-emitting components in the zth row correspond to a third switch RFzA.

[0312] In the light source array 3, the light-emitting components in the first row correspond to a second switch RF2B, the light-emitting components in the second row correspond to a third switch RF3B, the light-emitting components in the second row correspond to a second switch RF4B, the light-emitting components in the third row correspond to a third switch RF5B, the light-emitting components in the third row correspond to a second switch RF6B, the light-emitting components in the fourth row correspond to a third switch RF7B, ..., the light-emitting components in the z-1th row correspond to a second switch RFz-1B, and the light-emitting components in the zth row correspond to a third switch RFzB.

[0313] In the light source array z, the light-emitting components in the first row correspond to a second switch RF2Z, the light-emitting components in the second row correspond to a third switch RF3Z, the light-emitting components in the second row correspond to a second switch RF4Z, the light-emitting components in the third row correspond to a third switch RF5Z, the light-emitting components in the third row correspond to a second switch RF6Z, the light-emitting components in the fourth row correspond to a third switch RF7B, ..., the light-emitting components in the z-1th row correspond to a second switch RFz-1Z, and the light-emitting components in the zth row correspond to a third switch RFzZ.

[0314] In the communication device shown in FIG12B , the communication device can communicate with three objects simultaneously. For example, the communication device can send a first communication signal to object 1 , a second communication signal to object 2 , ... , and a zth communication signal to object z.

[0315] It should be understood that the communication devices shown in Figures 12B and 12C have the same technical effects as the communication device shown in Figure 12A, and will not be described in detail here.

[0316] In some embodiments, embodiments of the present application provide a transmitter, which may include at least one light source array. The structure of each light source array may refer to the description in the above embodiments. When the transmitter includes multiple light source arrays, the connection method between the multiple light source arrays may refer to the description in the above embodiments.

[0317] In some embodiments, an embodiment of the present application provides a communication device, as shown in FIG13A , which may include a transmitter, wherein the communication device may control an array in the transmitter to emit light to achieve communication and perception.

[0318] In some embodiments, the transmitter may further include a baseband signal source, a driving circuit, and a lens.

[0319] 13A , each light source array may correspond to a baseband signal source, a driving circuit, and a lens.

[0320] In some embodiments, the signal source and the signal input terminal can be integrated into a baseband signal source, and the baseband signal source can be used to output control signals and communication signals. In some embodiments, the signal source and the signal input terminal can also be separately provided.

[0321] In some embodiments, the controller may be integrated into the driver circuit.

[0322] The driver circuit is configured to select, based on a control signal from a baseband signal source, the light-emitting component or the impedance circuit corresponding to the light-emitting component, to enable the light source array to emit light and achieve perception. Furthermore, the driver circuit is configured to send a communication signal to the light source array, enabling the light emitted by the light source array to transmit the communication signal. The control signal can be any of the following: a first control signal, a second control signal, a third control signal, a fourth control signal, a fifth control signal, and a sixth control signal.

[0323] The light emitted by each light source array passes through its corresponding lens to form a light spot.

[0324] In some embodiments, control signals and communication signals may be collectively referred to as signals. Exemplarily, the transmitter includes two light source arrays, namely light source array 1 and light source array 2. Light source array 1 corresponds to baseband signal source 1, driving circuit 1 and lens 1, and light source array 2 corresponds to baseband signal source 2, driving circuit 2 and lens 2. Among them, baseband signal source 1 can generate a signal and send the signal to driving circuit 1. Based on the signal, driving circuit 1 can control light source array 1 to emit light, and the light emitted by light source array 1 passes through lens 1 to form a light spot. Among them, baseband signal source 2 can generate a signal and send the signal to driving circuit 2. Based on the signal, driving circuit 2 can control light source array 2 to emit light, and the light emitted by light source array 2 passes through lens 2 to form a light spot.

[0325] In some embodiments, referring to FIG13B , each light source array may correspond to one baseband signal source and one driving circuit, and at least two light source arrays may share one lens. In extreme cases, all light source arrays may share one lens.

[0326] For example, the light source array may include light source array 1 and light source array 2, and light source array 1 and light source array 2 share lens 1. In this example, baseband signal source 1 may generate a signal and send the signal to driver circuit 1. Driver circuit 1 may control light source array 1 to emit light based on the signal, and the light emitted by light source array 1 passes through lens 1 to form a light spot. Baseband signal source 2 may generate a signal and send the signal to driver circuit 2, and driver circuit 2 may control light source array 2 to emit light based on the signal, and the light emitted by light source array 2 passes through lens 1 to form a light spot.

[0327] The transmitter provided in the embodiment of the present application includes at least one light source array. The transmitter has the same technical effects as the above embodiments. Please refer to the description in the above embodiments and will not be repeated here.

[0328] The design concept of the light source array provided in the embodiment of the present application can also be applied to other fields. For example, the design concept can be applied to receivers for optical communications. In some embodiments, the embodiment of the present application provides a receiver, which may include a photodiode (PD) array, the PD array may include M×N PD sub-arrays, and each PD sub-array may include m×n PDs. Among them, in the PD array, the M×N PD sub-arrays can be connected in a serial-parallel combination, and in each PD sub-array, the m×n PDs can be connected in a serial-parallel combination. Among them, the connection method of the M×N PD sub-arrays can refer to the relevant description of the connection method of the M×N light-emitting components in the above embodiment, and the connection method of the m×n PDs can refer to the relevant description of the connection method of the m×n light-emitting units in the above embodiment.

[0329] In some embodiments, M is equal to N. In some embodiments, M and N may satisfy the following conditions: "2N≥M≥N" or "2M≥N≥M". In some embodiments, for example, M and N may satisfy "10≥M≥2" and "10≥N≥2".

[0330] In some embodiments, m is equal to n. In some embodiments, m and n may satisfy the following conditions: "2n≥m≥n", or "2m≥n≥m". In some embodiments, for example, m and n may satisfy "10≥m≥2" and "10≥n≥2".

[0331] Based on the settings of m, n, M, and N, the receiving power of the receiver can be improved while ensuring that the bandwidth of the receiver remains basically unchanged.

[0332] The term "plurality" in this document refers to two or more. The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the related objects; in a formula, the character " / " indicates a "division" relationship between the related objects.

[0333] It will be understood that the various numerical numbers involved in the embodiments of the present application are merely distinctions for the convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0334] It can be understood that in the embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Claims

1. A light emitting component, characterized in that: include: m×n light-emitting units, wherein the m×n light-emitting units are connected in a combination of series and parallel connection, wherein the light-emitting units in the same column are connected in series, and the light-emitting units in different columns after the series connection are connected in parallel, wherein m is an integer greater than or equal to 2, and n is an integer greater than or equal to 2.

2. The light emitting assembly according to claim 1, characterized in that: m is equal to n.

3. The light emitting assembly according to claim 1 or 2, characterized in that: The light emitting unit is any one of the following: a vertical cavity surface emitting laser (VCSEL), an edge emitting laser (EEL), a light emitting diode (LED), a micro light emitting diode (micro LED), or a super luminescent diode (SLD).

4. A light source array, characterized in that: include: M×N light-emitting components according to any one of claims 1 to 3, wherein the M×N light-emitting components are connected in series and in parallel, wherein M is an integer greater than or equal to 2, and wherein N is an integer greater than or equal to 2.

5. The light source array according to claim 4, characterized in that: The light source array further comprises X×Y light-emitting assemblies as claimed in any one of claims 1 to 3, wherein among the M×N light-emitting assemblies, each light-emitting assembly comprises m×n light-emitting units, and among the X×Y light-emitting assemblies, each light-emitting assembly comprises x×y light-emitting units.

6. The light source array according to claim 4 or 5, characterized in that: The light emitting components in the same column are connected in series, and the light emitting components in different columns after the series connection are connected in parallel; or, The light emitting components in the same row are connected in parallel, and the light emitting components in different rows after being connected in parallel are connected in series.

7. The light source array according to claim 6, characterized in that: The light-emitting units in the first row of the light-emitting components in the first row are connected to the power input terminal and the signal input terminal, and the light-emitting units in the mth row of the light-emitting components in the Mth row are grounded.

8. The light source array according to any one of claims 4 to 7, characterized in that: M equals N.

9. The light source array according to any one of claims 4 to 8, characterized in that: The wavelength of light emitted by each light-emitting unit is equal; or, The wavelengths of light emitted by the light-emitting units in each light-emitting assembly are equal, and the wavelengths of light emitted by the light-emitting units in at least two light-emitting assemblies are different; or, In at least one light-emitting component, there are at least two light-emitting units that emit lights of different wavelengths.

10. The light source array according to any one of claims 4 to 9, characterized in that: Each light-emitting component corresponds to an impedance circuit, and the difference between the impedance of the impedance circuit and the impedance of the light-emitting component is within a preset range.

11. The light source array according to claim 10, characterized in that: The impedance circuit includes any one of the following: a first capacitor; or, a first resistor; or, A second resistor, a third resistor and a second capacitor, wherein the second resistor and the third resistor are connected in series, and the second resistor and the second capacitor are connected in parallel.

12. The light source array according to claim 10, characterized in that: The impedance circuit includes at least one light emitting unit.

13. The light source array according to claim 12, characterized in that: The at least one light emitting unit includes a×b light emitting units, where a is an integer greater than or equal to 2, and b is an integer greater than or equal to 2.

14. The light source array according to claim 12 or 13, characterized in that: The wavelengths of light emitted by the light emitting units in the impedance circuit are equal; or, The wavelengths of light emitted by the light emitting units in each impedance circuit are equal, and the wavelengths of light emitted by the light emitting units in at least two impedance circuits are unequal.

15. The light source array according to claim 12 or 13, characterized in that: The wavelength of light emitted by the light-emitting unit in at least one impedance circuit is equal to the wavelength of light emitted by the light-emitting unit in at least one light-emitting assembly; or, The wavelength of light emitted by the light-emitting unit in at least one impedance circuit is different from the wavelength of light emitted by the light-emitting unit in at least one light-emitting component.

16. The light source array according to any one of claims 10 to 15, characterized in that: Each light-emitting component corresponds to at least one first switch, and the at least one first switch is used to turn on the light-emitting component or the impedance circuit corresponding to the light-emitting component.

17. The light source array according to any one of claims 4 to 16, characterized in that: When the light source array is at a first distance from the lens, the light emitted by the light-emitting unit in each light-emitting assembly passes through the lens to form a light spot; or, When the light source array is at a second distance from the lens and there are light-emitting units in i light-emitting components that emit light, the light emitted by the light-emitting units in the i light-emitting components passes through the lens to form a light spot, and the power of the light spot is related to i, where i is an integer greater than or equal to 1 and less than or equal to M×N.

18. A transmitter, characterized in that: include: At least one light source array according to any one of claims 4 to 17; In different light source arrays, the light-emitting units in the first row of the light-emitting components in the first row are connected to different signal input terminals.

19. The transmitter according to claim 18, characterized in that In each light source array, the light-emitting units in the mth row of the light-emitting assembly in the ith row are connected to a second switch, and the light-emitting units in the first row of the light-emitting assembly in the i+1th row are connected to a third switch, where i is an integer greater than or equal to 1 and less than or equal to M-1; The second switch corresponding to the i-th row of light-emitting components in the first light source array is respectively connected to the third switch corresponding to the i+1-th row of light-emitting components in the first light source array and the third switch corresponding to the i+1-th row of light-emitting components in other light source arrays, and the first light source array is included in the at least one light source array.

20. The transmitter according to claim 18 or 19, characterized in that Each light source array corresponds to a baseband signal source and a driving circuit, wherein the baseband signal source is used to output a control signal, and the driving circuit is used to control the light-emitting units in the light source array to emit light based on the control signal; Each light source array corresponds to a lens, or there are at least two light source arrays that share a lens.

21. A communication device, characterized in that: Comprising a transmitter as claimed in any one of claims 18-20.

22. A communication method applied to a light source array according to any one of claims 12 to 15, characterized in that: When the wavelengths of light emitted by different light-emitting units in each light-emitting assembly are different, the method further includes: receiving a first control signal; Turning on the target impedance circuit to enable the light source array to emit at least one first light beam; receiving a second control signal; The first target light-emitting component is turned on to enable the light source array to emit at least one second light beam, each of which includes m×n sub-beams, and the diameter of the sub-beam is smaller than the diameter of the first light beam.

23. The method according to claim 22, characterized in that When the light source array is at a first distance from the lens, the method further includes: receiving a third control signal; Turning on the second target light emitting component to enable the light source array to emit a third light beam, wherein the third light beam covers the first position; receiving a fourth control signal; The third target light emitting component is turned on to enable the light source array to emit a fourth light beam, and the fourth light beam covers the second position.

24. The method according to claim 22, characterized in that When the light source array is at a second distance from the lens, the method further includes: receiving a fifth control signal; Turning on the fourth target light-emitting component to enable the light source array to emit a fifth light beam; receiving a sixth control signal; The fifth target light-emitting component is turned on to enable the light source array to emit a sixth light beam, and the number of the fourth target light-emitting components is different from the number of the fifth target light-emitting components.

25. A communication device, characterized in that: include: Processor and memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method according to any one of claims 22-24.

26. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program or instruction, and when the computer program or instruction is executed, the method according to any one of claims 22 to 24 is implemented.

27. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed by a processor, the method according to any one of claims 22 to 24 is implemented.

28. A chip, characterized in that: The method comprises a processor and a communication interface, wherein the processor utilizes the communication interface to execute the method according to any one of claims 22 to 24.

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