Laser array driving circuit, control method and electronic equipment

Abstract

Embodiments of the present invention disclose a laser array drive circuit, control method, and electronic device. The drive circuit includes n boost circuits and m laser array units. Each laser array unit includes n light-emitting circuits and a first control switch. The output end of the kth boost circuit is electrically connected to the input end of the kth light-emitting circuit of each laser array unit. The output end of each light-emitting circuit is grounded via the first control switch.

Description

Technical Field

[0001] The present invention relates to the field of optoelectronic technology, and in particular to a driving circuit, a control method and a device for a laser array. Background Art

[0002] The existing laser array driving circuit usually requires a separate driving circuit for each light source. This not only increases the number of devices, but also increases the area of ​​the board where the driving circuit is located, resulting in a larger size of the corresponding lidar equipment, which is not conducive to the miniaturization and integration of the lidar equipment and also increases the production cost. Summary of the Invention

[0003] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] In a first aspect, an embodiment of the present invention provides a driving circuit for a laser array, comprising n boost circuits and m laser array units;

[0005] Each of the laser array units includes n light-emitting circuits and a first control switch. The output end of the kth boost circuit is electrically connected to the input end of the kth light-emitting circuit of each laser array unit, and the output end of each light-emitting circuit is grounded through the first control switch. Wherein, n>1, m>1 and n and m are positive integers, and k=1, 2, ..., n.

[0006] Optionally, each of the boost circuits includes a power supply, a first energy storage element, a second control switch, a unidirectional conducting element and a second energy storage element;

[0007] The power supply is electrically connected to the first end of the first energy storage element; the anode of the unidirectional conductive element is electrically connected to the second end of the first energy storage element and the first end of the second control switch respectively; the second end of the second control switch is grounded, the cathode of the unidirectional conductive element is connected to the first end of the second energy storage element and the input end of the corresponding light-emitting circuit respectively, and the second end of the second energy storage element is grounded.

[0008] Optionally, each of the light-emitting circuits includes a light-emitting element;

[0009] The input end of the light emitting element is connected to the cathode of the unidirectional conducting element of the corresponding boost circuit; and the output end of the light emitting element is electrically connected to the first control switch.

[0010] Optionally, m is 8 and n is 16.

[0011] Optionally, the first energy storage element is an inductor, the second energy storage element is a capacitor, the unidirectional conducting element is a diode, and the light emitting element is a laser diode.

[0012] Optionally, the laser diode is a vertical cavity surface laser projector or an edge emitting laser.

[0013] In a second aspect, an embodiment of the present invention provides a control method for a driving circuit of a laser array, which is applied to the above-mentioned driving circuit, comprising:

[0014] Controlling a boost circuit corresponding to a target light-emitting circuit to store energy in a first energy storage element during a first preset time period, wherein the target light-emitting circuit is a light-emitting circuit currently to be illuminated;

[0015] After the first preset time period, controlling the first energy storage element of the boost circuit corresponding to the target light-emitting circuit to store energy in the second energy storage element during a second preset time period;

[0016] After the second preset time period, controlling the first control switch corresponding to the target light-emitting circuit to be closed during a third preset time period, so that the target light-emitting circuit emits light during the third preset time period;

[0017] Take the next light-emitting circuit to be illuminated as the new target light-emitting circuit, repeat the above steps, and T4 ≥ T2 + T3, n*T4 ≥ T1 + T2, until all the light-emitting circuits have completed the above steps to complete a light-emitting cycle, and T ≥ m*n*T4 and T ≥ T1 + T2 + T3; wherein T4 is the duration of the light-emitting interval between the new target light-emitting circuit and the original target light-emitting circuit, T1 is the first preset time period, T2 is the second preset time period, T3 is the third preset time period, and T is the duration of a light-emitting cycle.

[0018] Optionally, the step of controlling the boost circuit corresponding to the target light-emitting circuit to store energy in the first energy storage element during a first preset time period includes:

[0019] The second control switch of the boost circuit corresponding to the target light-emitting circuit is controlled to be closed in a first preset time period, so as to charge and boost the first energy storage element through the power supply of the boost circuit.

[0020] Optionally, after the first preset time period, controlling the first energy storage element of the boost circuit corresponding to the target light-emitting circuit to store energy in the second energy storage element during a second preset time period includes:

[0021] After the first preset time period, the second control switch is controlled to be disconnected during a second preset time period, so as to charge and store energy in the second energy storage element through the power supply and the first energy storage element.

[0022] Optionally, after the second preset time period, controlling the first control switch corresponding to the target light-emitting circuit to be closed in a third preset time period, so that the target light-emitting circuit emits light in the third preset time period;

[0023] After the second preset time period, the first control switch corresponding to the target light-emitting circuit is controlled to be closed in the third preset time period, so that the light-emitting element of the target light-emitting circuit emits light in the third preset time period through the electricity released by the second energy storage element.

[0024] In a third aspect, an embodiment of the present invention provides an electronic device including the aforementioned laser array driving circuit.

[0025] Optionally, the number of the driving circuits of the laser array is at least two. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following drawings of the present invention are used as part of the embodiments of the present invention for understanding the present invention. The embodiments of the present invention are shown in the drawings and the description thereof is used to explain the principle of the present invention.

[0027] In the attached figure:

[0028] Figure 1 A circuit diagram of a boost circuit and a laser array unit according to an optional embodiment of the present invention;

[0029] Figure 2 for Figure 1 Timing diagram of

[0030] Figure 3 is a circuit diagram of a driving circuit of a laser array according to an optional embodiment of the present invention;

[0031] Figure 4 for Figure 3 Timing diagram of

[0032] Figure 5 The figure is a flow chart of a method for controlling a driving circuit of a laser array according to an optional embodiment of the present invention. DETAILED DESCRIPTION

[0033] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0034] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0035] Exemplary embodiments of the present invention will now be described in greater detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0036] First, as Figure 3 As shown, an embodiment of the present invention provides a driving circuit for a laser array, comprising n boost circuits and m laser array units BANK; each laser array unit comprises n light-emitting circuits and a first control switch S, the output end of the kth boost circuit is electrically connected to the input end of the kth light-emitting circuit of each laser array unit BANK, and the output end of each light-emitting circuit is grounded via the first control switch S; wherein n>1, m>1, n and m are positive integers, and k=1, 2, ..., n.

[0037] The number of boost circuits and laser array unit BANKs can be set according to actual needs and is not strictly limited in this embodiment.

[0038] In a specific application, after each boost circuit completes the energy storage process, the first control switch connected to the corresponding light-emitting circuit is controlled to be closed, so that the corresponding light-emitting circuit can emit light. After the corresponding light-emitting circuit finishes emitting light, the first control switch S connected to the corresponding light-emitting circuit is controlled to be opened. In this way, through the mutual coordination of the operating timing of each boost circuit and the operating timing of each first control switch S, each light-emitting circuit can emit light according to a preset lighting sequence. The emitted light can be reflected by objects in the environment and then received by a light receiving component (not shown in the figure), thereby achieving the purpose of detecting surrounding objects. Among them, the coordination process between each boost circuit and the operating timing of each first control switch S is described in detail in the control method below.

[0039] In this embodiment, all the light-emitting circuits in each laser array unit in the driving circuit are electrically connected to the first control switch S, and the k-th light-emitting circuit in each laser array unit BANK is electrically connected to the k-th boost circuit, thereby reducing the number of first control switches S and boost circuits, and also reducing the number of electronic components used in the driving circuit as a whole, thereby reducing the area of ​​the board where the driving circuit is located, thereby reducing the size of the laser radar device, which is conducive to the miniaturization and integration of the laser radar device, and also reduces the production cost.

[0040] Specifically, if Figure 1 As shown, each boost circuit includes a power supply DC, a first energy storage element, a second control switch SC, a unidirectional conductive element and a second energy storage element; the power supply DC is electrically connected to the first end of the first energy storage element; the anode of the unidirectional conductive element is electrically connected to the second end of the first energy storage element and the first end of the second control switch SC, respectively; the second end of the second control switch SC is grounded, the cathode of the unidirectional conductive element is connected to the first end of the second energy storage element and the input end of the corresponding light-emitting circuit, respectively, and the second end of the second energy storage element is grounded.

[0041] like Figure 1 As shown, each light-emitting circuit includes a light-emitting element LD; the input end of the light-emitting element LD is connected to the cathode of the unidirectional conductive element of the corresponding boost circuit; and the output end of the light-emitting element LD is electrically connected to the first control switch S.

[0042] In a specific application, in the initial state of each boost circuit and each light-emitting circuit, the first control switch S and the second control switch SC are both in the off state.

[0043] In order to clearly illustrate the working principles of the boost circuit and the light-emitting circuit, the working principles of the boost circuit and the light-emitting circuit are explained below by taking a boost circuit connected to a laser array unit having only one light-emitting circuit.

[0044] like Figure 1 and Figure 2 As shown, first, the power supply DC of the boost circuit is used to store energy in the first energy storage element within the first preset time period T1, that is, the second control switch SC is controlled to be closed in the first preset time period T1 (as shown in FIG. Figure 2 As shown in the on-off logic in FIG, logic 1 represents a closed switch, and logic 0 represents an open switch), the power supply DC, the first energy storage element, and the second control switch SC form a closed loop within a first preset time period T1. During this time period, the power supply DC stores energy in the first energy storage element, completing the energy storage process. The first energy storage element of the boost circuit then charges and stores energy in the second energy storage element. The second control switch SC is controlled to open, causing the power supply DC, the first energy storage element, the unidirectional conducting element, and the second energy storage element to form a closed loop. This charging and storing process continues for a second preset time period T2, until the second energy storage element reaches a preset voltage. The second energy storage element then illuminates the light-emitting element LD for a third preset time period T3.

[0045] Furthermore, in some embodiments, m is 8 and n is 16, that is, the driving circuit includes 8 boost circuits and laser array units BANK, and each laser array unit BANK has 16 light-emitting circuits, thereby being able to meet actual light-emitting requirements.

[0046] Furthermore, if Figure 1 As shown, the first energy storage element is an inductor L, the second energy storage element is a capacitor C, the unidirectional conducting element is a diode D, and the light emitting element is a laser diode LD.

[0047] The laser diode is a vertical cavity surface laser projector or edge-emitting laser. Laser projectors have the advantages of high photoelectric conversion efficiency, narrow spectral linewidth, and minimal spectral temperature drift. They also have the advantages of low cost, simple manufacturing process, and ease of mass production. Edge-emitting lasers have the advantages of large modulation bandwidth, small divergence angle, and high slope efficiency.

[0048] In a second aspect, an embodiment of the present invention further provides a control method for a driving circuit of a laser array, which is applied to the above-mentioned driving circuit. The specific structure of the driving circuit can be found in the above-mentioned embodiment and will not be described in detail.

[0049] Specifically, if Figure 5 As shown, the control method of the driving circuit of the laser array includes:

[0050] Step S101: controlling a boost circuit corresponding to a target light-emitting circuit to store energy in a first energy storage element during a first preset time period T1, wherein the target light-emitting circuit is a light-emitting circuit to be currently illuminated.

[0051] The lighting circuit to be currently lit can be determined according to a preset lighting sequence, and the preset lighting sequence can be set by the staff according to actual needs.

[0052] For example, Figure 5 As shown, it is assumed that the preset light emission order is from the first laser array unit to the mth laser array unit, that is, ( Figure 3 In the order of BANK1-BANKm), each laser array unit drives the corresponding light-emitting circuit to emit light in the order of the first light-emitting circuit to the nth light-emitting circuit, that is, the preset light-emitting order is LD in the figure. 1.1 LD 1.2 ,……,LD 1.(n-2) LD 1.(n-1) LD 1.n LD 2.1 LD 2.2 ,……,LD 2.(n-2) LD 2.(n-1) LD 2.n ,……LD (m-1).1 LD (m-1).2 ,……,LD (m-1).(n-2) LD (m-1).(n-1) LD (m-1).n LD m.1 LD m.2 ,……,LD m.(n-2) LD m.(n-1) LD m.n , then when the driving circuit starts working, LD 1.1 The light-emitting circuit is the light-emitting circuit to be currently illuminated, ie, the target light-emitting circuit. Adaptively, the first boost circuit Boost1 is the corresponding boost circuit.

[0053] In a specific application, the second control switch SC of the boost circuit corresponding to the target light-emitting circuit is controlled to be closed in the first preset time period T1, so as to charge and boost the first energy storage element through the power supply DC of the boost circuit.

[0054] Continuing with the above example, LD 1.1 Taking the light-emitting circuit as the target light-emitting circuit and the first boost circuit Boost1 as the corresponding boost circuit as an example, the second control switch SC1 of the first boost circuit Boost1 is closed in the first preset time period, so that the power supply DC, the first energy storage element (inductor L1), and the second control switch SC1 form a closed loop in the first preset time period T1, thereby charging and boosting the first energy storage element (inductor L1) through the power supply DC of the first boost circuit Boost1.

[0055] Step S102: After the first preset time period T1, the first energy storage element of the boost circuit corresponding to the target light-emitting circuit is controlled to store energy in the second energy storage element during a second preset time period.

[0056] In a specific application, after the first preset time period T1, the second control switch SC is controlled to be turned off in the second preset time period T2, so as to charge the second energy storage element through the power supply and the first energy storage element.

[0057] Continuing with the above example, LD 1.1 Taking the light-emitting circuit as the target light-emitting circuit and the first boost circuit as the corresponding boost circuit as an example, after the first preset time period T1, the second control SC1 switch is controlled to be disconnected, so that the power supply DC, the first energy storage element (inductor L1), the unidirectional conductive element (diode D1), and the second energy storage element (capacitor C1) form a closed loop, thereby charging and storing energy in the second energy storage element (capacitor C1) through the first energy storage element (inductor L1), so that the charge amount (i.e., voltage) of the second energy storage element (capacitor C1) also increases accordingly, and the charging and energy storage process of the first energy storage element (inductor L1) to the second energy storage element (capacitor C1) continues for the second preset time period T2, so that the second energy storage element (capacitor C1) reaches the preset voltage.

[0058] Step S103: After the second preset time period T2, the first control switch S corresponding to the target light-emitting circuit is controlled to be closed in a third preset time period, so that the target light-emitting circuit emits light in a third preset time period T3.

[0059] In a specific application, after the second preset time period T2, the first control switch corresponding to the target light-emitting circuit is closed in the third preset time period T3, so that the light-emitting element of the target light-emitting circuit emits light in the third preset time period through the electricity released by the second energy storage element.

[0060] Continuing with the above example, LD 1.1 The light-emitting circuit is the target light-emitting circuit, and the first boost circuit Boost1 is the corresponding boost circuit. After the second preset time period T2, the control S1 is closed, so that the second energy storage element (capacitor C1) of the first boost circuit Boost1 is the LD of the target light-emitting circuit. 1.1 Power supply to make the target light emitting circuit LD 1.1 The light is emitted during the third preset time period T3.

[0061] Step S104: Take the next light-emitting circuit to be illuminated as the new target light-emitting circuit, repeat steps S101-S103, and T4≥T2+T3, n*T4≥T1+T2, until all the light-emitting circuits complete steps S101-S103 to complete a light-emitting cycle, and T≥m*n*T4 and T≥T1+T2+T3; wherein T4 is the duration of the light-emitting interval between the new target light-emitting circuit and the original target light-emitting circuit, T1 is the first preset time period, T2 is the second preset time period, T3 is the third preset time period, and T is the duration of a light-emitting cycle.

[0062] The next circuit to be illuminated can be determined by the preset illumination sequence and the current illumination circuit to be illuminated. For example, taking the preset illumination sequence in the example of step S101 as an example, according to the preset illumination sequence, if LD 1.1 The luminous circuit where it is located is the luminous circuit to be illuminated currently, then LD 1.2 The light-emitting circuit where it is located is the next light-emitting circuit to be illuminated, so that LD 1.2 The light-emitting circuit where it is located is taken as the new target light-emitting circuit, and steps S101-S103 are repeated, so that LD 1.2 It can emit light in the third preset time period T3, and so on, until LD m.n As a new target lighting circuit, and repeat steps S101-S103, make LD 1.2 The light can be emitted within the third preset time period, thereby completing a light-emitting cycle.

[0063] In this step, if Figure 2 and Figure 4 As shown, in order to avoid the situation where the original target light-emitting circuit has not yet been extinguished, while the new target light-emitting circuit has started to emit light, that is, the two light-emitting circuits emit light at the same time, the first preset time period T1, the second preset time period T2, the third preset time period T3, the duration T4 of the light-emitting interval between the new target light-emitting circuit and the original target light-emitting circuit, and the duration T of the light-emitting cycle must satisfy the following relationship:

[0064] T4≥T2+T3, n*T4≥T1+T2; T≥m*n*T4 and T≥T1+T2+T3.

[0065] Furthermore, in specific applications, when the timing cannot satisfy the above relationship, the number of boost circuits, laser array units, and light-emitting circuits in each laser array unit can be adjusted, that is, the number of m and n can be adjusted to ensure that the timing satisfies the above relationship. Optionally, m = 8 and n = 16.

[0066] In specific applications, the preset light-emitting timing can also be LD 1.1 LD 2.2LD 3.3 LD 4.4 LD 5.5 ,…,LD n.n LD (n+1).1 ,…,LD m.(m-n) 、LD1. (m -n+1),…,LD m.n , where m>n, so that the light-emitting circuit can emit light sequentially along the diagonal direction. The specific control process can be performed according to steps S101-S104, which will not be repeated here. Of course, the above-mentioned preset light-emitting timing is only exemplary. In actual application, the staff can set the corresponding preset light-emitting timing according to actual needs, and determine the target light-emitting circuit according to the preset light-emitting timing, and then execute the control method according to steps S101-S104.

[0067] In a third aspect, an embodiment of the present invention provides an electronic device including the aforementioned laser array driving circuit.

[0068] The electronic device may be a cleaning device, such as a sweeping robot, a mopping robot, or a sweeping and mopping robot. Of course, it may also be a device with other functions, such as a delivery robot.

[0069] All the light-emitting circuits in each laser array unit in the driving circuit of the electronic device are electrically connected to the first control switch, and the k-th boost circuit in each laser array unit is electrically connected to the k-th boost circuit, thereby reducing the number of first switching and boost circuits, and also reducing the number of electronic components used in the driving circuit as a whole, thereby reducing the area of ​​the board where the driving circuit is located, thereby reducing the size of the laser radar device, which is conducive to the miniaturization and integration of the laser radar device, and also reduces the production cost.

[0070] Furthermore, the number of driving circuits for the laser array is at least two, thereby ensuring that the timing of each boost circuit and light-emitting circuit better meets the timing relationship in the above-mentioned embodiment, namely, satisfying T4 ≥ T2 + T3, n*T4 ≥ T1 + T2; T ≥ m*n*T4, and T ≥ T1 + T2 + T3. Furthermore, in specific applications, the number of boost circuits, laser array unit banks, and light-emitting circuits in each laser array unit bank in the driving circuit of each laser array can be different. Taking the driving circuits of two laser arrays as an example, the number of boost circuits, laser array units, and light-emitting circuits in each laser array unit bank in the driving circuit of one laser array is 16, that is, m = n = 16. The number of boost circuits in the driving circuit of the other laser array is 16, the number of laser array unit banks is 8, and the number of light-emitting circuits in each laser array unit bank is 16.

[0071] The present invention has been described through the above-described embodiments. However, it should be understood that the above-described embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser array driving circuit, characterized in that: It includes n boost circuits and m laser array units; Each of the laser array units includes n light-emitting circuits and a first control switch. The output end of the kth boost circuit is electrically connected to the input end of the kth light-emitting circuit of each laser array unit, and the output end of each light-emitting circuit is grounded through the first control switch. Wherein, n>1, m>1 and n and m are positive integers, and k=1, 2, ..., n.

2. The laser array driving circuit according to claim 1, wherein: Each of the boost circuits includes a power supply, a first energy storage element, a second control switch, a unidirectional conducting element and a second energy storage element; The power supply is electrically connected to the first end of the first energy storage element; the anode of the unidirectional conductive element is electrically connected to the second end of the first energy storage element and the first end of the second control switch respectively; the second end of the second control switch is grounded, the cathode of the unidirectional conductive element is connected to the first end of the second energy storage element and the input end of the corresponding light-emitting circuit respectively, and the second end of the second energy storage element is grounded.

3. The laser array driving circuit according to claim 2, wherein: Each of the light-emitting circuits includes a light-emitting element; The input end of the light emitting element is connected to the cathode of the unidirectional conducting element of the corresponding boost circuit; and the output end of the light emitting element is electrically connected to the first control switch.

4. The laser array driving circuit according to claim 1, wherein: m is 8 and n is 16.

5. The laser array driving circuit according to claim 3, wherein: The first energy storage element is an inductor, the second energy storage element is a capacitor, the unidirectional conducting element is a diode, and the light emitting element is a laser diode.

6. The laser array driving circuit according to claim 5, characterized in that: The laser diode is a vertical cavity surface laser projector or an edge emitting laser.

7. A method for controlling a driving circuit of a laser array, applied to the driving circuit according to any one of claims 1 to 6, characterized in that: include: S101, controlling a boost circuit corresponding to a target light-emitting circuit to store energy in a first energy storage element during a first preset time period, wherein the target light-emitting circuit is a light-emitting circuit currently to be illuminated; S102, after the first preset time period, controlling the first energy storage element of the boost circuit corresponding to the target light-emitting circuit to store energy in the second energy storage element in a second preset time period; S103, after the second preset time period, controlling the first control switch corresponding to the target light-emitting circuit to be closed in a third preset time period, so that the target light-emitting circuit emits light in the third preset time period; Take the next light-emitting circuit to be illuminated as the new target light-emitting circuit, repeat the above steps S101 to S103, and T4≥T2+T3, n*T4≥T1+T2, until all the light-emitting circuits complete the above steps S101 to S103 to complete a light-emitting cycle, and T≥m*n*T4 and T≥T1+T2+T3; wherein T4 is the duration of the light-emitting interval between the new target light-emitting circuit and the original target light-emitting circuit, T1 is the first preset time period, T2 is the second preset time period, T3 is the third preset time period, and T is the duration of a light-emitting cycle.

8. The method according to claim 7, characterized in that The step of controlling the boost circuit corresponding to the target light-emitting circuit to store energy in the first energy storage element during a first preset time period includes: The second control switch of the boost circuit corresponding to the target light-emitting circuit is controlled to be closed in a first preset time period, so as to charge and boost the first energy storage element through the power supply of the boost circuit.

9. The method according to claim 8, characterized in that After the first preset time period, controlling the first energy storage element of the boost circuit corresponding to the target light-emitting circuit to store energy in the second energy storage element in the second preset time period includes: After the first preset time period, the second control switch is controlled to be disconnected during a second preset time period, so as to charge and store energy in the second energy storage element through the power supply and the first energy storage element.

10. The method according to claim 9, characterized in that After the second preset time period, controlling the first control switch corresponding to the target light-emitting circuit to be closed in a third preset time period so that the target light-emitting circuit emits light in the third preset time period includes: After the second preset time period, the first control switch corresponding to the target light-emitting circuit is controlled to be closed in the third preset time period, so that the light-emitting element of the target light-emitting circuit emits light in the third preset time period through the electricity released by the second energy storage element.

11. An electronic device, characterized in that: A driving circuit comprising the laser array according to any one of claims 1 to 6.

12. The electronic device according to claim 11, wherein: The number of the driving circuits of the laser array is at least two.

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