Flash, flash lighting method

Abstract

The embodiment of the present application provides a flash, which comprises: a light source module comprising an LED array for emitting light; a camera; a light source controller electrically connected with the light source module for controlling the light emitting state of the light source module; a main controller electrically connected with the camera and the light source controller, wherein the main controller is configured to: make the camera shoot a first image; analyze the first image to determine an LED irradiation area; determine a first plurality of LEDs in the LED array which need to be started according to the LED irradiation area; and send a light source control signal to the light source controller to make the light source controller send a control current to start the first plurality of LEDs.

Description

Technical Field

[0001] This invention relates to a flash lamp and a flash lamp illumination method. Background Technology

[0002] When taking pictures using portable devices (such as mobile phones), a flash is used to increase ambient light. Existing LED flashes are mostly arranged in concentric circles, which can cover a large shooting area, but consumes a large number of LEDs and is difficult to use for supplemental lighting in specific details. Summary of the Invention

[0003] Some embodiments of the present invention provide a flashlight, comprising: a light source module including an LED array for emitting light; a camera; a light source controller electrically connected to the light source module for controlling the light emission state of the light source module; and a main controller electrically connected to the camera and the light source controller, wherein the main controller is configured to: cause the camera to capture a first image; analyze the first image to determine an LED illumination area; determine a first plurality of LEDs in the LED array to be activated based on the LED illumination area; and send a light source control signal to the light source controller to cause the light source controller to send a control current to activate the first plurality of LEDs.

[0004] Furthermore, other embodiments of the present invention provide a flash lighting method, comprising: controlling a camera to capture a first image using a main controller; the main controller analyzing the first image to determine an LED illumination area in an LED array of a light source module; the main controller determining a first plurality of LEDs to be activated in the LED array based on the LED illumination area; the main controller sending a light source control signal to a light source controller, causing the light source controller to send a control current to activate the first plurality of LEDs and capture a second image; the main controller analyzing the second image to confirm that the second image meets a required standard; wherein if the second image meets the required standard, the second image is stored; wherein if the second image does not meet the required standard, the main controller sends the light source control signal to the light source controller again, causing the light source controller to send the control current to activate the first plurality of LEDs and capture a third image.

[0005] Based on the above, the flash and flash lighting method provided by this invention utilize elliptical arranged LED flash units, combined with a micro motor and algorithm operation, to achieve optimal LED flash shooting results. This allows for coverage of a large shooting area while illuminating only the necessary LEDs. Therefore, it reduces system energy consumption and enables supplementary lighting for specific details, making it suitable for flash photography in various ambient brightness conditions. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of a flash lamp in a portable device according to an embodiment of the present invention;

[0007] Figure 2 This is a schematic diagram of a flash lamp according to an embodiment of the present invention;

[0008] Figure 3 This is a schematic diagram of a light source module according to an embodiment of the present invention;

[0009] Figure 4A This is a schematic diagram of an LED array according to an embodiment of the present invention;

[0010] Figure 4B This is a schematic diagram of another LED array according to an embodiment of the present invention;

[0011] Figure 5A This is a schematic diagram of a first image according to an embodiment of the present invention;

[0012] Figure 5B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention;

[0013] Figure 6A This is a schematic diagram of a first image according to an embodiment of the present invention;

[0014] Figure 6B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention;

[0015] Figure 7A This is a schematic diagram of a first image according to an embodiment of the present invention;

[0016] Figure 7B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention;

[0017] Figure 8A This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention;

[0018] Figure 8B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention;

[0019] Figure 9 This is a flowchart of a flash lighting method according to an embodiment of the present invention. Detailed Implementation

[0020] The following description provides detailed examples and accompanying drawings, but these examples are not intended to limit the scope of the invention. Furthermore, the component dimensions in the accompanying drawings are for illustrative purposes and do not represent actual component size proportions. Also, although terms such as "first" and "second" are used to describe different components and / or membranes, these components and / or membranes should not be limited by these terms. Rather, these terms are used only to distinguish one component or membrane from another. Therefore, the first component or membrane discussed below may be referred to as the second component or membrane without departing from the teachings of the embodiments. For ease of understanding, similar components will be labeled with the same symbols in the following description.

[0021] In the description of embodiments of the present invention, different examples may use repeated reference numerals and / or words. These repeated numerals or words are for simplification and clarity purposes and are not intended to limit the various embodiments and / or the relationship between the described appearance structures. Furthermore, if the following description of the invention describes forming a first feature on or above a second feature, it indicates that it includes embodiments where the formed first feature and the second feature are in direct contact, and also includes embodiments where an additional feature is formed between the first feature and the second feature, such that the first feature and the second feature may not be in direct contact. For ease of understanding, similar components will be referred to by the same symbols in the following description.

[0022] Figure 1 This is a schematic diagram of a flashlight in a portable device according to an embodiment of the present invention.

[0023] Please refer to Figure 1 . Figure 1 The appearance of a portable electronic device 1 is shown. In some embodiments, the portable electronic device 1 may be a mobile phone, a tablet computer, or something with other similar functions. The appearance of the portable electronic device 1 exposes some components of the flash, including a light source module 100 and a camera 200, wherein the camera 200 includes at least one lens 210 for use in conjunction with the light source module 100 to capture images.

[0024] The specific structure of the flash unit is described below.

[0025] Figure 2 This is a schematic diagram of a flash lamp according to an embodiment of the present invention.

[0026] Please refer to Figure 2 The flash unit 10 includes: a light source module 100, a camera 200, a main controller 300, and a light source controller 400.

[0027] The light source module 100 includes a light-emitting diode (LED) array ( Figure 2 (Not shown in the image), used to emit light. The specific structure of the light source module 100 will be described later. Figure 3 The explanation is as follows.

[0028] Camera 200 is used to capture images. In some embodiments, such as Figure 1 As shown, the camera 200 includes at least one lens 210, but the type, number, size and position of the lens 210 can be adjusted according to actual needs, and the present invention is not limited thereto.

[0029] A light source controller 400 is electrically connected to the light source module 100 and is used to control the light emission state of the light source module 100. Specifically, the light source controller 400 is electrically connected to each LED in the LED array 132 of the light source module 100 to individually control the activation and deactivation of each LED. In some embodiments, the light source controller 400 may be a circuit, an electronic component, or a software-controlled processor, and the present invention is not limited thereto.

[0030] The main controller 300 is electrically connected to the camera 200 and the light source controller 400. The main controller 300 analyzes the image captured by the camera 200 and determines the illumination area corresponding to the LED array 132 in the light source module 100 and the current flowing through the LED array 132. Specifically, the main controller 300 is configured to perform the following functions: cause the camera 200 to capture a first image 600; analyze the first image 600 to determine the LED illumination area 610; determine the first plurality of LEDs to be activated in the LED array 132 based on the LED illumination area 610; and send a light source control signal to the light source controller 400, causing the light source controller 400 to send a control current to activate the first plurality of LEDs.

[0031] The functions and roles of the main controller 300 will be explained below.

[0032] In some embodiments, the main controller 300 may be a processing circuit or control circuit with computing functions, such as a central processing unit (CPU), a microprocessor control unit (MCU), or a field-programmable gate array (FPGA), and the present invention is not limited thereto. The main controller 300 may be integrated with the light source controller 400 as a control module, or the main controller 300 may be a processing unit of an electronic device integrating the light source controller 400. Furthermore, the main controller 300 may also include memory for storing the images and programs or algorithms mentioned in the various embodiments of the present invention, for access and execution by the main controller 300.

[0033] Figure 3 This is a schematic diagram of a light source module according to an embodiment of the present invention.

[0034] Please refer to Figure 3 The light source module 100 includes: a substrate 130, an LED array 132, a housing 140, and a lens 150.

[0035] The LED array 132 is disposed on the substrate 130. In some embodiments, the substrate 130 may be a printed circuit board (PCB), a flexible circuit board (FPC), or a substrate of other suitable materials, and the present invention is not limited thereto.

[0036] LED array 132 includes a plurality of LEDs arranged in a specific manner on substrate 130. In some embodiments, the LED array includes one or more combinations of monochrome LEDs or white LEDs, wherein monochrome LEDs include red LEDs, green LEDs, and blue LEDs, and the present invention is not limited thereto.

[0037] Each LED in the LED array 132 can be turned on or off independently, thus allowing for optimization of the light source brightness and illumination method based on the shape of the object being photographed.

[0038] A housing 140 is disposed on a substrate 130 and surrounds the LED array 132 to form a chamber to protect the LED array 132. In some embodiments, the housing 140 may be made of plastic to reduce the weight of the housing 140 and have sufficient strength to protect the LED array 132.

[0039] Lens 150 is disposed on housing 140 and covers LED array 132 to focus and shape the light beam emitted by LED array 132 to meet lighting requirements. In some embodiments, lens 150 may be a plastic lens or a Fresnel lens to reduce lens weight and thickness, thereby reducing the size of light source module 100.

[0040] like Figure 3 As shown, the light source module 100 also includes a rotating platform 120 and a rotating motor 110. Furthermore, as... Figure 2 As shown, the flash 10 further includes a rotary motor controller 500.

[0041] like Figure 3 As shown, a rotating platform 120 is disposed at the bottom of the substrate 130 to support the substrate 130. The rotating platform can rotate the substrate 130 in a clockwise or counterclockwise direction to change the illumination direction of the LED array 132.

[0042] A rotary motor 110 is disposed at the bottom of the rotary platform 120, and the rotary platform 120 is rotated by the rotary motor 110. In some embodiments, the rotary motor 110 may be a stepper motor or a micro drive motor to precisely control the rotation angle of the rotary platform 120.

[0043] like Figure 2 As shown, the rotary motor controller 500 is electrically connected to the rotary motor 110 and the main controller 300, and is used to drive the rotary motor 110 to control the direction of the LED array 132. Specifically, the rotary motor controller 500 is used to receive the rotary motor control signal sent by the main controller 300, so as to make the rotary motor 110 rotate and drive the rotary platform 120, so as to make the light source module 100 rotate by a rotation angle.

[0044] Figure 4A This is a top view of an LED array according to an embodiment of the present invention. Figure 4B This is a top view of another LED array according to an embodiment of the present invention.

[0045] Please refer to this first. Figure 4A .like Figure 4A As shown, the LED array 132 is disposed on the substrate 130 and includes multiple LEDs, namely LED132A-LED132M.

[0046] LED array 132 includes multiple LEDs, namely LED132A-LED132M. In other embodiments, it may have other numbers of LEDs, and the present invention is not limited thereto. The multiple LEDs, namely LED132A-LED132M, are distributed within the area formed by the first ellipse E1 and the second ellipse E2.

[0047] like Figure 4A As shown, LED132A, LED132B, LED132D, LED132F, LED132E, LED132G, LED132I, LED132H, LED132J, LED132L, and LED132M are all located within the first ellipse E1. LED132C, LED132B, LED132E, LED132H, LED132D, LED132G, LED132J, LED132F, LED132I, LED132L, and LED132K are all located within the second ellipse E2.

[0048] The major axis of the first ellipse E1 passes through LED132A, LED132D, LED132G, LED132J, and LED132M.

[0049] The minor axis of the first ellipse E1 passes through LED132E, LED132G, and LED132I.

[0050] The major axis of the second ellipse E2 passes through LED132C, LED132E, LED132G, LED132I, and LED132K.

[0051] The minor axis of the second ellipse E2 passes through LED132D, LED132G, and LED132J.

[0052] Therefore, the minor axis of the second ellipse E2 is a part of the major axis of the first ellipse E1, and the minor axis of the first ellipse E1 is a part of the major axis of the second ellipse E2.

[0053] like Figure 4A As shown, the major axis L1 of the first ellipse E1 passes through the midpoint of the major axis L2 of the second ellipse E2, namely LED132G, and is perpendicular to the major axis L2 of the second ellipse E2. The size of the first ellipse E1 is the same as that of the second ellipse E2.

[0054] Therefore, the first ellipse E1 and the second ellipse E2 are two ellipses of the same size and shape, and whose major axes are perpendicular to each other.

[0055] By arranging the LEDs of LED array 132 in two orthogonal elliptical configurations, the arrangement of LEDs can be made directional, and the total number of LEDs can be reduced.

[0056] like Figure 4A As shown, the LEDs in the first ellipse E1 are arranged in a first distribution, and the LEDs in the second ellipse E2 are arranged in a second distribution. The first distribution and the second distribution have the same shape.

[0057] Specifically, in the first distribution, the LEDs within the first ellipse E1 are mirror-symmetrical about either the major axis L1 or the minor axis S1 of the first ellipse E1. For example, LEDs 132B, 132E, and 132H are mirror-symmetrical about LEDs 132F, 132I, and 132L along the major axis L1 of the first ellipse E1. Furthermore, LEDs 132B, 132A, 132D, and 132F are mirror-symmetrical about LEDs 132H, 132M, 132J, and 132L along the minor axis S1 of the first ellipse E1.

[0058] On the other hand, since the first ellipse E1 and the second ellipse E2 are the same size and shape, in the second distribution, the LEDs within the second ellipse E2 are mirror-symmetrical along the major axis L2 or the minor axis S2 of the second ellipse E2. For example, LEDs 132B, 132D, and 132F are mirror-symmetrical along the major axis L2 of the second ellipse E2 to LEDs 132H, 132J, and 132L. Furthermore, LEDs 132F, 132K, 132I, and 132L are mirror-symmetrical along the minor axis L2 of the second ellipse E2 to LEDs 132B, 132C, 132E, and 132H.

[0059] Please refer to Figure 4B Since the LED array 132 is located on the substrate 130, and the substrate 130 is located on the rotating platform 120, the rotation of the rotating platform 120 can drive the rotation of the substrate 130, thereby changing the position of the LED array 132. For example, in Figure 4B In the middle, for Figure 4A The result is that the LED array 132 is rotated 45 degrees clockwise. In other implementations, the LED array 132 can be rotated at any angle clockwise or counterclockwise to achieve the best lighting effect.

[0060] Based on image analysis by the main controller 300, the main controller 300 will determine the LED illumination area and increase the light intensity for shooting within that area. The following example illustrates the flash lighting method.

[0061] Figure 5A This is a schematic diagram of a first image according to an embodiment of the present invention. Figure 5B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention.

[0062] Please refer to this first. Figure 5A . Figure 5A It is the screen 20 of a portable electronic device, such as a mobile phone or tablet computer screen.

[0063] Before the actual shooting begins, the main controller 300 starts the camera 200 and activates the photo-taking function.

[0064] Next, the main controller 300 controls the camera 200 to capture the first image 600A. This step is only for pre-capturing images, which will only be used by the main controller 300 for subsequent analysis.

[0065] In some embodiments, the distribution of the LED array 132 in the light source module 100 does not completely correspond to the distribution of the first image 600A. Therefore, in order to obtain the best lighting effect, after the aforementioned step of "the main controller 300 controls the camera 200 to capture the first image 600A", the main controller 300 calculates the optimal rotation position of the rotary motor 110 based on the distribution state of the first image 600A, and then sends a rotary motor control signal to rotate the rotary motor 110 located below the light source module 100, so that the light source module 100 rotates by a rotation angle to the optimal shooting position.

[0066] Next, the main controller 300 determines the LED illumination area 610A based on the distribution of the first image 600A on the screen. The other areas on the screen are the unilluminated areas 620A.

[0067] Next, please refer to Figure 5B The main controller 300 is based on... Figure 5A The LED illumination area 610A determines the first plurality of LEDs to be activated in the LED array 132, such as LED132B, LED132D, LED132E, LED132G, LED132I, LED132J, and LED132L to be activated in the LED array 132.

[0068] Next, the main controller 300 sends a light source control signal to the light source controller 400, causing the light source controller 400 to send a control current, activate the first plurality of LEDs, and capture a second image. For example, in Figure 5B In the process, the main controller 300 sends a light source control signal to the light source controller 400, causing the light source controller 400 to send a control current to activate LED132B, LED132D, LED132E, LED132G, LED132I, LED132J, and LED132L to provide sufficient illumination and capture a second image.

[0069] Next, the main controller 300 analyzes the second image to confirm that it meets the required standards. If the second image meets the required standards, it is stored.

[0070] On the other hand, if the second image does not meet the required standard, the main controller 300 sends a light source control signal to the light source controller 400 again, causing the light source controller 400 to send a control current to start LED132B, LED132D, LED132E, LED132G, LED132I, LED132J, and LED132L, and to capture a third image.

[0071] Therefore, by means of the above method, the main controller 300 can determine which LEDs need to be activated based on the first image 600A, without having to activate all LEDs, thus achieving more precise lighting and reducing the power consumption of the portable electronic device.

[0072] Figure 6A This is a schematic diagram of a first image according to an embodiment of the present invention. Figure 6B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention.

[0073] Figure 6A and Figure 5A Similar. The difference lies in, Figure 6A In the image, the shape of the first image 600B roughly occupies the central area of ​​the screen, thus correspondingly changing the shape and range of the LED irradiated area 610B and the unirradiated area 620B.

[0074] Figure 6B and Figure 5B Similar. The difference lies in, Figure 6B In this context, due to the change in the first image 600B and the LED illumination area 610B, the number and position of the LEDs that need to be activated also differ. Figure 6B The LEDs that must be activated are LED132D, LED132E, LED132F, LED132G, LED132H, LED132I, and LED132J.

[0075] Therefore, the main controller 300 can determine which LEDs need to be activated based on the first image 600B, without having to activate all LEDs, thus achieving more precise lighting and reducing the power consumption of the portable electronic device.

[0076] Figure 7A This is a schematic diagram of a first image according to an embodiment of the present invention. Figure 7B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention.

[0077] Figure 7A and Figure 5A Similar. The difference lies in, Figure 7A In the image, the shape of the first image 600C roughly occupies all areas of the screen except for the upper left and lower right corners, thus correspondingly changing the shape and range of the LED irradiated area 610C and the unirradiated area 620C.

[0078] Figure 7B and Figure 5B Similar. The difference lies in, Figure 7B In this context, due to the change in the first image 600C and the LED illumination area 610C, the number and position of the LEDs that need to be activated also differ. Figure 7BThe LEDs that must be activated are LED132B, LED132C, LED132D, LED132E, LED132F, LED132G, LED132H, LED132I, LED132J, LED132K, and LED132L.

[0079] Therefore, the main controller 300 can determine which LEDs need to be activated based on the first image 600C, without having to activate all LEDs, thus achieving more precise lighting and reducing the power consumption of the portable electronic device.

[0080] Figure 8A This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention. Figure 8B This is a schematic diagram of a first image and an LED array according to an embodiment of the present invention.

[0081] Please refer to this first. Figure 8A .exist Figure 8A In the image, the first image 600D is approximately located in the center of the LED array. However, the LED array is not arranged in the most suitable position relative to the first image 600D. At this time, 11 LEDs are lit except for LEDs 132C and 132K. Therefore, based on the first image, after the main controller 300 calculates the optimal rotation position of the rotary motor 110, the main controller 300 sends a rotary motor control signal to rotate the rotary motor 110, which in turn drives the substrate 130 and the LED array 132 to rotate by a certain angle to the optimal shooting position via the rotating platform 120. For example, in Figure 8B In this process, the main controller causes the rotary motor 110 to rotate 45 degrees counterclockwise, so that the rotating platform 120 and the substrate 130 in the light source module 100 drive the LED array 132 to rotate, thereby achieving the optimal shooting position. At this time, in addition to LEDs 132A, 132F, 132K, and 132M, a total of 9 LEDs are lit.

[0082] Therefore, the main controller 300 can determine the required rotation angle of the light source module based on the position of the first image 600D to achieve the optimal shooting position. Furthermore, at the optimal shooting position (e.g., Figure 8B As shown in the image, this reduces the number of LEDs that need to be lit, resulting in more precise lighting and reduced power consumption of portable electronic devices.

[0083] Figure 9 This is a flowchart of a flash lighting method according to an embodiment of the present invention.

[0084] Please refer to Figure 9 The lighting method S100 includes the following steps.

[0085] In step S102, the main controller 300 starts the camera 200 and activates the photo-taking function. Proceed to step S104.

[0086] In step S104, the main controller 300 controls the camera 200 to capture the first image. For example... Figure 5A First image 600A, Figure 6A First image 600B Figure 7A The first image 600C or Figure 8A The first image is 600D. Proceed to step S106.

[0087] In step S106, based on the first image, after the main controller 300 calculates the optimal rotation position of the rotary motor 110, the main controller 300 sends a rotary motor control signal to rotate the rotary motor 110 located below the light source module 100, causing the light source module 100 to rotate by a certain angle to the optimal shooting position. For example... Figure 8B In the middle, rotate the light source module 100 counterclockwise by 45 degrees. Proceed to step S108.

[0088] In step S108, the main controller 300 determines the LED illumination area based on the clarity of the first image and its position on the screen. Specifically, the main controller 300 determines the LED illumination area based on the distribution of the first image. For example... Figure 5A In this process, the main controller 300 determines the LED illumination area 610A based on the distribution position of the first image 600A. For example... Figure 6A In this process, the main controller 300 determines the LED illumination area 610B based on the distribution position of the first image 600B. For example... Figure 7A In this process, the main controller 300 determines the LED illumination area 610C based on the distribution position of the first image 600C. Then, proceed to step S110.

[0089] In step S110, the main controller 300 determines the first plurality of LEDs to be activated in the LED array 132 based on the LED illumination area, for example, in Figure 5B In this process, the main controller 300 determines which LEDs 132B, LED132D, LED132E, LED132G, LED132I, LED132J, and LED132L in the LED array 132 must be activated based on the LED illumination area 610A. Or, for example, in... Figure 6B In this process, the main controller 300 determines which LEDs 132D, LED132E, LED132F, LED132G, LED132H, LED132I, and LED132J in the LED array 132 must be activated based on the LED illumination area 610B. Or, for example, in... Figure 7BIn step S112, the main controller 300 determines which LEDs 132B, LED132C, LED132D, LED132E, LED132F, LED132G, LED132H, LED132I, LED132J, LED132K, and LED132L in the LED array 132 to be activated based on the LED illumination area 610C.

[0090] In step S112, the main controller 300 sends a light source control signal to the light source controller 400, causing the light source controller 400 to send a control current, activate the first plurality of LEDs, and capture a second image. For example, in Figure 5B In this process, the main controller 300 sends a light source control signal to the light source controller 400, causing the light source controller 400 to output a control current, activating LED132B, LED132D, LED132E, LED132G, LED132I, LED132J, and LED132L. Or, for example, in... Figure 6B In the process, the main controller 300 sends a light source control signal to the light source controller 400, causing the light source controller 400 to output a control current, activating LEDs 132D, LED132E, LED132F, LED132G, LED132H, LED132I, and LED132J. Or, for example, in... Figure 7B In the process, the main controller 300 sends a light source control signal to the light source controller 400, causing the light source controller 400 to send a control current to start LED132B, LED132C, LED132D, LED132E, LED132F, LED132G, LED132H, LED132I, LED132J, LED132K, and LED132L. Proceed to step S114.

[0091] In step S114, the main controller 300 analyzes the second image to confirm that it meets the required standards. If the second image meets the required standards, the process proceeds to step S116. If the second image does not meet the required standards, the process returns to step S108.

[0092] In step S116, if the second image meets the required criteria, the second image is stored.

[0093] If the second image does not meet the required standard in step S114, the process returns to step S108, where the main controller 300 sends a light source control signal to the light source controller 400 again, causing the light source controller 400 to send a control current, start the first plurality of LEDs, and capture the third image.

[0094] Based on the above, the flash and flash lighting method provided by this invention utilize elliptical arranged LED flash units, combined with a micro motor and algorithm operation, to achieve optimal LED flash shooting results. This allows for coverage of a large shooting area while illuminating only the necessary LEDs. Therefore, it reduces system energy consumption and enables supplementary lighting for specific details, making it suitable for flash photography in various ambient brightness conditions.

Claims

1. A flash lamp characterized by, include: Light source module, including An LED array for emitting light, wherein the LED array comprises multiple LEDs arranged in an elliptical pattern; A substrate, on which the LED array is disposed; A housing is disposed on the substrate and surrounds the LED array; A lens is disposed on the housing and covers the LED array. Camera; A light source controller, electrically connected to the light source module, is used to control the light emission state of the light source module; The main controller is electrically connected to the camera and the light source controller; A rotating platform is disposed at the bottom of the substrate; A rotary motor is located at the bottom of the rotating platform; A rotary motor controller, electrically connected to the rotary motor and the main controller, wherein the main controller is configured to: The camera captures a first image; Analyze the first image to determine the rotation angle of the light source module; The main controller sends a control signal to the rotary motor, causing the rotary motor to rotate and drive the rotary platform, causing the light source module to rotate by the specified rotation angle; Analyze the first image to determine the LED illumination area; Based on the LED illumination area, determine the first plurality of LEDs in the LED array that must be activated; A light source control signal is sent to the light source controller, causing the light source controller to send a control current to activate the first plurality of LEDs. In the step of analyzing the first image to determine the LED illumination area, the main controller determines the LED illumination area based on the distribution position of the first image.

2. The flash unit according to claim 1, characterized in that, The plurality of LEDs are distributed within a range formed by a first ellipse and a second ellipse, wherein the major axis of the first ellipse passes through the midpoint of the major axis of the second ellipse and is perpendicular to the major axis of the second ellipse, and the size of the first ellipse is the same as the size of the second ellipse.

3. The flash unit according to claim 2, characterized in that, The LEDs within the first ellipse are arranged in a first distribution, and the LEDs within the second ellipse are arranged in a second distribution, wherein the first distribution and the second distribution have the same shape.

4. The flash unit according to claim 2, characterized in that, The LEDs within the first ellipse are mirror-symmetrical along the major axis of the first ellipse, or mirror-symmetrical along the minor axis of the first ellipse.

5. The flash unit according to claim 2, characterized in that, The LEDs within the second ellipse are mirror-symmetric along the major axis of the second ellipse, or mirror-symmetric along the minor axis of the second ellipse.

6. A method for illuminating a flash lamp according to claim 1, characterized in that, include: The main controller controls the camera to capture the first image; Analyze the first image to determine the rotation angle of the light source module; The main controller sends a control signal to the rotary motor, causing the rotary motor located below the light source module to rotate, thereby causing the light source module to rotate by the specified rotation angle. The main controller analyzes the first image to determine the LED illumination area in the LED array of the light source module, wherein the LED array includes a plurality of LEDs arranged in an elliptical pattern; The main controller determines which of the first plurality of LEDs in the LED array must be activated based on the LED illumination area; The main controller sends the light source control signal to the light source controller, causing the light source controller to send the control current, activate the first plurality of LEDs, and capture a second image; The main controller analyzes the second image to confirm whether the second image meets the required standards; If the second image meets the required criteria, then the second image is stored. If the second image does not meet the required standard, the main controller sends the light source control signal to the light source controller again, causing the light source controller to emit the control current, activate the first plurality of LEDs, and capture the third image. In the step of the main controller analyzing the first image to determine the LED illumination area, the main controller determines the LED illumination area based on the distribution position of the first image.

Images