Light supplementing device, light supplementing method, image acquisition module and electronic device

Abstract

The application discloses a light supplementing device, an image collecting module and electronic equipment. The light supplementing device is applied to the electronic equipment and comprises a control unit, a light emitting unit and a focusing optical unit. The focusing optical unit is arranged on the light emitting side of the light emitting unit. The control unit is electrically connected with the light emitting unit and the focusing optical unit. The control unit is used for controlling the light emitting unit to emit light, determining a first voltage according to a first light emitting angle target value obtained, adjusting the focal length of the focusing optical unit based on the first voltage, and making the light emitted by the light emitting unit be emitted at an angle corresponding to the first light emitting angle target value after passing through the focusing optical unit. The first light emitting angle target value is determined according to the focusing distance, the field of view angle and the shooting mode of the image collecting device in the electronic equipment. The application can meet the demand of supplementing light to any area in the field of view angle while avoiding the phenomenon that the center is too bright and the edge is too dark when supplementing light.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a supplementary lighting device, a supplementary lighting method, an image acquisition module, and an electronic device. Background Technology

[0002] With the rapid development and growth of the photography industry, images taken by users in low-light and dark environments often suffer from increased noise, reduced sharpness, and poor color reproduction, resulting in a significant decrease in overall image quality. Therefore, devices such as supplementary lights are now used to provide illumination during image capture.

[0003] However, current fill lights cannot form a regular and uniform beam, resulting in a phenomenon where the center is too bright and the edges are too dark when filling light, resulting in poor overall lighting effect, which directly affects the consistency of the image and fails to meet the user's need to take pictures of the area of ​​interest. Summary of the Invention

[0004] In view of this, this application provides a supplementary lighting device, a supplementary lighting method, an image acquisition module, and an electronic device to solve the problems in traditional solutions.

[0005] The first aspect of this application provides a supplementary lighting device for use in electronic devices. The supplementary lighting device includes: a control unit, a light-emitting unit, and a focusing optical unit. The focusing optical unit is disposed on the light-emitting side of the light-emitting unit. The control unit is electrically connected to the light-emitting unit and the focusing optical unit. The control unit is used to control the light-emitting unit to emit light, and to determine a first voltage based on a first light emission angle target value. Based on the first voltage, the control unit adjusts the focal length of the focusing optical unit so that the light emitted by the light-emitting unit passes through the focusing optical unit and exits at an angle corresponding to the first light emission angle target value. The first light emission angle target value is determined based on the focusing distance, field of view, and shooting mode of the image acquisition device in the electronic device.

[0006] Optionally, the supplementary lighting device further includes: a light intensity adjustment unit disposed on the light-emitting side of the focusing optical unit, and the control unit electrically connected to the light intensity adjustment unit; the control unit is configured to determine a second voltage based on the acquired first supplementary lighting intensity target value, and adjust the transmittance of the light intensity adjustment unit based on the second voltage, so that the light emitted by the light-emitting unit passes through the light intensity adjustment unit and is emitted with a light intensity corresponding to the first supplementary lighting intensity target value, wherein the first supplementary lighting intensity target value is determined based on the ambient light intensity of the image acquisition device in the electronic device, the focusing distance, and the shooting mode.

[0007] Optionally, the light intensity modulation unit is opaque when not powered on.

[0008] Optionally, the supplementary lighting device further includes: a focusing unit, which is disposed between the light-emitting unit and the focusing optical unit; the focusing unit is used to refract light rays emitted by the light-emitting unit that exceed an angle threshold, so that the refracted light rays converge to the focusing optical unit.

[0009] Optionally, the non-optical region of the focusing unit is opaque.

[0010] Optionally, the supplementary lighting device further includes: a light homogenizing unit, which is disposed on the light-emitting side of the focusing optical unit; the light homogenizing unit is used to homogenize the light passing through the focusing optical unit and guide the homogenized light to the light intensity adjustment unit.

[0011] A second aspect of this application provides an image acquisition module for use in an electronic device. The image acquisition module includes an image acquisition device and a supplementary lighting device as described in the first aspect of the embodiment. The supplementary lighting device is electrically connected to the image acquisition device, and the image acquisition device is electrically connected to a processing module in the electronic device.

[0012] A third aspect of this application provides an electronic device, comprising: an image acquisition module and a processing module as described in the second aspect of the embodiment, wherein the processing module is electrically connected to the image acquisition module; the processing module is configured to acquire the focus distance, field of view, and shooting mode of the image acquisition device in the image acquisition module, determine a first emission angle target value based on the focus distance, the field of view, and the shooting mode, and send the first emission angle target value to a supplementary lighting device in the image acquisition module, so that the supplementary lighting device emits light at an angle corresponding to the first emission angle target value.

[0013] Optionally, the electronic device further includes: an ambient light sensor; the ambient light sensor is used to collect the ambient light intensity where the image acquisition device is located; the processing module is used to determine a first supplementary light intensity target value according to the ambient light intensity, the focusing distance and the shooting mode, and send the first supplementary light intensity target value to the supplementary light device, so that the supplementary light device emits light rays with a light intensity corresponding to the first supplementary light intensity target value.

[0014] Optionally, the processing module is further configured to respond to a selection command generated by a user triggering a shooting angle mode selection button on the display interface of an electronic device, determine a shooting angle mode, determine a second emission angle target value and a second supplementary light intensity target value based on the shooting angle mode, the ambient light intensity, and the shooting mode, and send the second emission angle target value and the second supplementary light intensity target value to the supplementary light device, so that the supplementary light device emits light at an angle corresponding to the second emission angle target value, and emits light with a light intensity corresponding to the second supplementary light intensity target value.

[0015] A fourth aspect of this application provides a supplementary lighting method applied to an electronic device, comprising: acquiring the focus distance, field of view, and shooting mode of an image acquisition device in an image acquisition module of the electronic device; determining a first emission angle target value based on the focus distance, the field of view, and the shooting mode; and sending the first emission angle target value to a supplementary lighting device in the image acquisition module, so that the supplementary lighting device emits light at an angle corresponding to the first emission angle target value.

[0016] In this application, the control unit determines the first voltage based on the obtained first emission angle target value, and adjusts the focal length of the focusing optical unit based on the first voltage. This enables the adjustment of the angle of the light emitted by the emission unit. While avoiding the phenomenon of the center being too bright and the edges being too dark when supplementing light, it can meet the need to supplement light to any area within the field of view. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of an electronic device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application; Figure 3A This is a schematic diagram of the focusing optical unit refracting the light emitted by the light-emitting unit according to an embodiment of this application; Figure 3B This is a schematic diagram of the focusing optical unit refracting the light emitted by the light-emitting unit according to another embodiment of this application; Figure 4 This is an exploded view of a supplementary lighting device according to an embodiment of this application; Figure 5 This is an exploded view of a supplementary lighting device according to another embodiment of this application; Figure 6 This is a flowchart of the steps of a supplemental lighting method according to an embodiment of this application; Figure 7 This is a schematic diagram of an image acquisition module according to an embodiment of this application; Figure 8 This is a schematic diagram of an electronic device according to an embodiment of this application; Figure 9 This is a schematic diagram of an electronic device according to another embodiment of this application; Figure 10 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application; Figure 11 This is a flowchart of the supplementary lighting method according to another embodiment of this application. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art should fall within the protection scope of the embodiments of this application.

[0020] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0021] It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. Where there is no conflict, the following embodiments and their technical features can be combined with each other.

[0023] Figure 1 This is a schematic diagram of an electronic device according to an embodiment of this application. Figure 2 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Figure 1-2 As shown, electronic device 1 includes a supplementary lighting device 2 and an image acquisition device 3. Electronic device 1 can be a mobile phone, tablet computer, digital camera, or other device with shooting capabilities. With the rapid iteration of the video recording function of electronic device 1 (mobile phone, tablet computer, digital camera, etc.), users' shooting scenarios are becoming increasingly diversified. It covers everything from everyday portraits and landscapes to macro close-ups and special scenes such as night scenes and distant views. Among these, low-light or dark environment shooting has become a high-frequency demand. Users expect to obtain low-noise, high-definition, and accurate color reproduction imaging effects even in low-light scenarios such as nighttime, indoors, and backlighting. At the same time, some users pursue creative shooting and need to achieve specific lighting effects through supplementary lighting control to further enhance the freedom of creative shooting. Therefore, supplementary lighting devices such as fill lights are usually required. For example, the mainstream supplementary lighting solution for mobile terminals on the current market is LED + Fresnel fixed flash. However, the optical structure of the Fresnel lens determines its core shortcomings: low light efficiency, poor illuminance uniformity, and weak light constraint. The light emitted by the LED light source cannot form a regular and uniform beam after passing through the Fresnel lens. This results in an overly bright center and underly dark edges during supplemental lighting. The overall illumination effect is poor, directly affecting image consistency. Therefore, the supplemental lighting device 2 provided in this application includes: a control unit 20, a light-emitting unit 21, and a focusing optical unit 22. The focusing optical unit 22 is disposed on the light-emitting side of the light-emitting unit 21, and the control unit 20 is electrically connected to the light-emitting unit 21 and the focusing optical unit 22. The control unit 20 is used to control the light-emitting unit 21 to emit light, and determines a first voltage based on the acquired first emission angle target value. Based on the first voltage, it adjusts the focal length of the focusing optical unit 22 so that the light emitted by the light-emitting unit 21 passes through the focusing optical unit 22 and exits at an angle corresponding to the first emission angle target value. The first emission angle target value is determined based on the focusing distance, field of view, and shooting mode of the image acquisition device 3 in the electronic device 1.

[0024] It can be seen that when electronic device 1 needs to control image acquisition device 3 to acquire images, it acquires the focusing distance, field of view, and shooting mode of image acquisition device 3. The focusing distance and field of view of image acquisition device 3 can be determined based on the distance between the target object and the focusing module in image acquisition device 3. The shooting mode of image acquisition device 3 can include portrait mode and night wide-angle mode, etc. Electronic device 1 determines the first emission angle target value based on the focusing distance, field of view, and shooting mode of image acquisition device 3, and sends the first emission angle target value to control unit 20. After receiving the first emission angle target value, control unit 20 controls the emission unit 21 to emit light, and determines the first voltage based on the acquired first emission angle target value. The focal length of focusing optical unit 22 is adjusted based on the first voltage. For example, when narrow beam focused illumination is required, the first voltage applied to focusing optical unit 22 in supplementary lighting device 2 makes it have a larger curvature. The focal length of focusing optical unit 22 can be shortened, and the light emitted by emission unit 21 passes through focusing optical unit 22 and then... Figure 3A The light is emitted at the angle shown. When wide-beam focused illumination is required, the focusing optical unit 22 in the supplementary lighting device 2 is subjected to a first voltage, causing it to have a smaller curvature. The light emitted by the light-emitting unit 21 passes through the focusing optical unit 22 and then... Figure 3B It is fired at the angle shown.

[0025] Specifically, the electronic device 1 determines the target value of the first luminous angle based on the focusing distance, field of view, and shooting mode of the image acquisition device 3. This can be achieved by first determining the focusing distance and field of view of the image acquisition device 3 based on the distance between the target object and the focusing module in the image acquisition device 3. Then, the target value of the luminous angle to be adjusted is determined based on the focusing distance and field of view of the image acquisition device 3. Finally, the target value of the luminous angle to be adjusted is adjusted according to the shooting mode of the image acquisition device 3 to obtain the first luminous angle target value. For example, if the shooting mode of the image acquisition device 3 is portrait mode, the target value of the luminous angle to be adjusted is slightly reduced to focus on the facial area, avoiding excessive background illumination. If the shooting mode of the image acquisition device 3 is night wide-angle mode, the target value of the luminous angle to be adjusted is slightly enlarged to adapt to the needs of covering large night scenes.

[0026] In this embodiment, the control unit 20 determines a first voltage based on the acquired first emission angle target value. The focal length of the focusing optical unit 22 is adjusted based on the first voltage, thereby adjusting the angle of the light emitted by the emission unit 21. This avoids the phenomenon of excessive brightness at the center and excessive darkness at the edges during supplementary lighting, while meeting the need for supplementary lighting to any area within the field of view.

[0027] In one possible implementation, such as Figure 4As shown, the supplementary lighting device 2 also includes a focusing unit 24, which is disposed between the light-emitting unit 21 and the focusing optical unit 22. The focusing unit 24 is used to refract light rays exceeding an angle threshold emitted by the light-emitting unit 21, so that the refracted light rays are focused onto the focusing optical unit 22.

[0028] The focusing unit 24 can be a conical or barrel-shaped cavity structure, made of optical-grade plastic or metal. For example, a total internal reflection lens (TIR lens) is typically truncated conical or funnel-shaped, thicker at the center and tapering towards the edges, exhibiting overall rotational symmetry. High optical efficiency can be achieved through total internal reflection. The internal space of the focusing unit 24 can match the size of the adjustable focusing optical unit 22, allowing for integration of the two. The outer diameter of the focusing unit 24 can also be smaller than the outer diameter of the adjustable focusing optical unit 22, in which case the light-emitting surface of the adjustable focusing optical unit 22 is in contact with the light-emitting surface of the focusing unit 24.

[0029] Specifically, a microlens array or a diffuser plate can also be installed on the inner wall of the cavity of the focusing unit 24. This can further homogenize the converged light and eliminate problems such as uneven light spots or dark edges.

[0030] In this embodiment of the application, by setting the light-concentrating unit 24, the light emitted by the light-emitting unit 21 can be focused, so that the light reaching the adjustable focus optical unit 22 is more uniform.

[0031] In one possible implementation, the non-optical region of the light-concentrating unit 24 is opaque.

[0032] Specifically, the outer surface of the light-concentrating unit 24 can be made opaque.

[0033] In this embodiment, by setting the non-optical area of ​​the light-concentrating unit 24 to be opaque, the light emitted by the light-emitting unit 21 can be prevented from being scattered to the outside through the light-concentrating unit 24, thereby improving the light-concentrating efficiency of the supplementary light device 2.

[0034] In one possible implementation, such as Figure 5 As shown, the supplementary lighting device 2 further includes a light intensity adjustment unit 23, which is disposed on the light-emitting side of the focusing optical unit 22. The control unit 20 is electrically connected to the light intensity adjustment unit 23. The control unit 20 is used to determine a second voltage based on the acquired first supplementary lighting intensity target value, and adjust the transmittance of the light intensity adjustment unit 23 based on the second voltage, so that the light emitted by the light-emitting unit 21 is emitted with a light intensity corresponding to the first supplementary lighting intensity target value after passing through the light intensity adjustment unit 23. The first supplementary lighting intensity target value is determined based on the ambient light intensity, focusing distance, and shooting mode of the image acquisition device 3 in the electronic device 1.

[0035] The light intensity adjustment unit 23 can be an electrochromic glass or polymer film, or other device that can change its transmittance through an electrical signal. During the supplementary lighting process of the supplementary lighting device 2, the control unit 20 determines a second voltage based on a first supplementary lighting intensity target value. By adjusting the transmittance of the light intensity adjustment unit 23 based on the second voltage (the transmittance is typically continuously adjustable between 10% and 95%), the supplementary lighting brightness of the supplementary lighting device 2 can be directly controlled.

[0036] It should be noted that, Figure 5 The supplementary lighting device 2 shown integrates both a light intensity adjustment unit 23 and a light focusing unit 24. However, the supplementary lighting device 2 does not necessarily have to include both the light intensity adjustment unit 23 and the light focusing unit 24; it may also integrate only the adjustment unit 23 or only the light focusing unit 24.

[0037] In this embodiment, by setting the light intensity adjustment unit 23, the light intensity of the light emitted by the supplementary lighting device 2 can be controlled, thereby achieving direct control of the supplementary lighting brightness. Furthermore, the second voltage used to adjust the transmittance of the light intensity adjustment unit 23 is referenced to the ambient light intensity of the image acquisition device 3, thus making the supplementary lighting more adaptable to the current shooting environment.

[0038] In one possible implementation, the supplementary lighting device 2 may further include a light homogenizing unit disposed on the light-emitting side of the focusing optical unit 22. The light homogenizing unit is used to homogenize the light passing through the focusing optical unit 22 and guide the homogenized light to the light intensity adjustment unit 23.

[0039] In one possible implementation, the light intensity modulation unit 23 is opaque when not powered.

[0040] In this embodiment, when the user is not using the device, i.e., after the light intensity adjustment unit 23 is disconnected from power, it becomes an opaque black color, allowing it to blend seamlessly with the electronic device 1, such as a mobile phone screen, achieving a visually appealing result.

[0041] Figure 6 This is a flowchart illustrating the steps of a supplemental lighting method according to an embodiment of this application, as follows: Figure 6 As shown, the supplementary lighting method applied to electronic devices includes the following steps: Step 601: Control the light-emitting unit of the supplementary lighting device to emit light.

[0042] Step 602: Determine the first voltage based on the obtained first emission angle target value, and adjust the focal length of the focusing optical unit included in the supplementary lighting device based on the first voltage, so that the light emitted by the emission unit passes through the focusing optical unit and is emitted at an angle corresponding to the first emission angle target value.

[0043] The electronic device includes an image acquisition device and a supplementary lighting device. The supplementary lighting device includes a light-emitting unit and a focusing optical unit. The focusing optical unit is located on the light-emitting side of the light-emitting unit, and the light-emitting unit and the focusing optical unit are electrically connected.

[0044] When the electronic device needs to control the image acquisition device to acquire images, it controls the light-emitting unit included in the supplementary lighting device to emit light. It also acquires the focus distance, field of view, and shooting mode of the image acquisition device. The focus distance and field of view of the image acquisition device can be determined based on the distance between the target object and the focusing module in the image acquisition device. The shooting mode of the image acquisition device can include portrait mode and night wide-angle mode, etc. The electronic device determines a first emission angle target value based on the focus distance, field of view, and shooting mode of the image acquisition device. The electronic device determines a first voltage based on the acquired first emission angle target value and adjusts the focal length of the focusing optical unit based on the first voltage. This causes the light emitted by the light-emitting unit to exit at an angle corresponding to the first emission angle target value after passing through the focusing optical unit. For example, when narrow beam focused illumination is required, the first voltage applied to the focusing optical unit in the supplementary lighting device causes it to have a larger curvature. The focal length of the focusing optical unit can be shortened, and the light emitted by the light-emitting unit exits at an angle corresponding to the first emission angle target value after passing through the focusing optical unit. Figure 3A The light is emitted at the angle shown. When wide-beam focused illumination is required, the focusing optical unit in the supplementary lighting device is subjected to a first voltage, causing it to have a smaller curvature. The light emitted by the light-emitting unit passes through the focusing optical unit and then... Figure 3B It is fired at the angle shown.

[0045] In this embodiment, a first voltage is determined based on the obtained first emission angle target value, and the focal length of the focusing optical unit is adjusted based on the first voltage, thereby enabling adjustment of the angle of the light emitted by the emission unit. This avoids the phenomenon of excessive brightness at the center and excessive darkness at the edges during supplementary lighting, while simultaneously meeting the need for supplementary lighting to any area within the field of view.

[0046] Figure 7 This is a schematic diagram of an image acquisition module according to an embodiment of this application, as shown below. Figure 1 and Figure 7 As shown, the image acquisition module 4 includes: an image acquisition device 3 and a supplementary lighting device 2 as described in the above embodiment.

[0047] The supplementary lighting device 2 is electrically connected to the image acquisition device 3, and the image acquisition device 3 is electrically connected to the processing module 11 in the electronic device 1.

[0048] When electronic device 1 needs to control image acquisition module 4 to acquire images, it acquires the focusing distance, field of view, and shooting mode of image acquisition device 3 in image acquisition module 4. The focusing distance and field of view of image acquisition device 3 can be determined based on the distance between the target object and the focusing module in image acquisition device 3. The shooting mode of image acquisition device 3 can include portrait mode and night wide-angle mode, etc. Processing module 11 in electronic device 1 determines the first emission angle target value based on the focusing distance, field of view, and shooting mode of image acquisition device 3, and sends the first emission angle target value to supplementary lighting device 2. After receiving the first emission angle target value, supplementary lighting device 2 controls the emission unit 21 in supplementary lighting device 2 to emit light, and determines the first voltage based on the acquired first emission angle target value. The focal length of focusing optical unit 22 in supplementary lighting device 2 is adjusted based on the first voltage. For example, when narrow beam focused illumination is required, the first voltage applied to focusing optical unit 22 in supplementary lighting device 2 makes it have a larger curvature. The focal length of the focusing optical unit 22 can be shortened, and the light emitted by the light-emitting unit 21 will be reduced after passing through the focusing optical unit 22. Figure 3A The light is emitted at the angle shown. When wide-beam focused illumination is required, the first voltage of the focusing optical unit 22 in the supplementary lighting device 2 causes it to have a smaller curvature. The light emitted by the light-emitting unit 21 passes through the focusing optical unit 22 and then... Figure 3B It is fired at the angle shown.

[0049] The specific implementation of each module in the supplementary lighting device 2 can be found in the corresponding steps and unit descriptions in the aforementioned supplementary lighting device embodiments, and will not be repeated here. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the devices and modules described above can be referred to the corresponding process descriptions in the aforementioned supplementary lighting device embodiments, and will not be repeated here.

[0050] In this embodiment, the supplementary lighting device 2 determines a first voltage based on the obtained first emission angle target value. The focal length of the focusing optical unit 22 is adjusted based on the first voltage, enabling adjustment of the angle of the light emitted by the emission unit 21. This avoids the phenomenon of excessive brightness at the center and excessive darkness at the edges during supplementary lighting, while meeting the need for supplementary lighting to any area within the field of view.

[0051] In this embodiment, an electronic device is provided, such as... Figure 8 As shown, the electronic device 1 may include: the image acquisition module 4 and the processing module 11 in the foregoing embodiments, wherein the processing module 11 is electrically connected to the image acquisition module 4.

[0052] The processing module 11 is used to acquire the focusing distance, field of view and shooting mode of the image acquisition device 3 in the image acquisition module 4, determine the first emission angle target value according to the focusing distance, field of view and shooting mode, and send the first emission angle target value to the supplementary light device 2 in the image acquisition module 4 so that the supplementary light device 2 emits light at an angle corresponding to the first emission angle target value.

[0053] The specific implementation of each module in image acquisition module 4 can be found in the corresponding steps and unit descriptions in the foregoing image acquisition module embodiments, and will not be repeated here. Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the devices and modules described above can be referred to the corresponding process descriptions in the foregoing image acquisition module embodiments, and will not be repeated here.

[0054] The electronic device 1 of this application embodiment acquires the focusing distance, field of view, and shooting mode of the image acquisition device 3 in the image acquisition module 4 through the processing module 11. It then determines a first emission angle target value based on the focusing distance, field of view, and shooting mode, so that the supplementary lighting device 2 determines a first voltage based on the acquired first emission angle target value. Based on the first voltage, it adjusts the focal length of the focusing optical unit 22, thereby adjusting the angle of the light emitted by the emission unit 21. This avoids the phenomenon of excessive brightness at the center and excessive darkness at the edges during supplementary lighting, while meeting the need for supplementary lighting to any area within the field of view.

[0055] In one possible implementation, such as Figure 9 As shown, the electronic device 1 also includes an ambient light sensor 12. The ambient light sensor 12 is used to collect the ambient light intensity of the image acquisition device 3. The processing module 11 is used to determine a first supplementary light intensity target value based on the ambient light intensity, focusing distance, and shooting mode, and send the first supplementary light intensity target value to the supplementary light device 2, so that the supplementary light device 2 emits light with a light intensity corresponding to the first supplementary light intensity target value.

[0056] The processing module 11 can determine the first supplementary light intensity target value based on the ambient light intensity of the image acquisition device 3, the focusing distance, and the shooting mode acquired by the ambient light sensor 12, and send the first supplementary light intensity target value to the supplementary light device 2 so that the supplementary light device 2 emits light with a light intensity corresponding to the first supplementary light intensity target value.

[0057] In this embodiment, by setting an ambient light sensor 12, the ambient light intensity can be collected. This allows for control of the light intensity emitted by the supplementary lighting device 2, thereby achieving direct control of the supplementary lighting brightness. This makes the supplementary lighting more suitable for the current shooting environment.

[0058] In one possible implementation, the processing module 11 is further configured to, in response to a selection instruction generated by a user-triggered shooting angle mode selection button on the display interface of the electronic device, determine the shooting angle mode, determine a second emission angle target value and a second supplementary light intensity target value based on the shooting angle mode, ambient light intensity, and shooting mode, and send the second emission angle target value and the second supplementary light intensity target value to the supplementary light device, so that the supplementary light device emits light at an angle corresponding to the second emission angle target value, and emits light with a light intensity corresponding to the supplementary light intensity target value.

[0059] The display interface of electronic device 1 can show buttons for selecting various shooting angle modes. When the user triggers one of the buttons, electronic device 1 generates a corresponding selection command. At this time, processing module 11 can determine the shooting angle mode based on the selection command, and then control the supplementary lighting device 2. The mapping relationship between the selection command and the shooting angle mode can be pre-stored in the memory of electronic device 1, and the parameters of the shooting angle mode can also be flexibly configured and updated.

[0060] In this embodiment, the shooting angle mode is determined by responding to a selection command generated by the shooting angle mode selection button on the display interface of the electronic device triggered by the user. This allows for more convenient determination of the corresponding parameters for controlling the supplementary lighting device 2, thereby improving the user experience.

[0061] In one possible implementation, such as Figure 10 As shown, the supplementary lighting device 2 and the image acquisition device 3 can be electrically connected via a substrate. The light-emitting unit 21, the focusing optical unit 22, the light intensity adjustment unit 23, and the focusing unit 24 in the supplementary lighting device 2 can be electrically connected via a flexible printed circuit board 25.

[0062] In this embodiment, by setting up a supplementary lighting device 2 and an image acquisition device 3 that can be electrically connected via a substrate, the light-emitting unit 21, the focusing optical unit 22, the light intensity adjustment unit 23 and the focusing unit 24 in the supplementary lighting device 2 can be electrically connected via a flexible printed circuit board 25, which can improve the integration of the electronic device 1.

[0063] Figure 11 This is a flowchart of the supplementary lighting method according to another embodiment of this application, as follows: Figure 11 As shown, the supplementary lighting method applied to electronic devices includes the following steps: Step 1101: Obtain the focusing distance, field of view, and shooting mode of the image acquisition device in the image acquisition module of the electronic device.

[0064] Step 1102: Determine the target value of the first luminous angle based on the focusing distance, field of view, and shooting mode.

[0065] Step 1103: Send the first emission angle target value to the supplementary lighting device in the image acquisition module so that the supplementary lighting device emits light at an angle corresponding to the first emission angle target value.

[0066] The electronic device includes an image acquisition device and a supplementary lighting device. The supplementary lighting device includes a light-emitting unit and a focusing optical unit. The focusing optical unit is located on the light-emitting side of the light-emitting unit, and the light-emitting unit and the focusing optical unit are electrically connected.

[0067] When an electronic device needs to control an image acquisition device to capture images, it acquires the focusing distance, field of view, and shooting mode of the image acquisition device. The focusing distance and field of view of the image acquisition device can be determined based on the distance between the target object and the focusing module in the image acquisition device. The shooting mode of the image acquisition device can include portrait mode and night wide-angle mode, etc. The electronic device determines a first emission angle target value based on the focusing distance, field of view, and shooting mode of the image acquisition device. Then, the electronic device sends the first emission angle target value to the supplementary lighting device in the image acquisition module. After receiving the first emission angle target value, the supplementary lighting device controls the emission unit to emit light and determines a first voltage based on the acquired first emission angle target value. Based on the first voltage, the focal length of the focusing optical unit is adjusted so that the light emitted by the emission unit passes through the focusing optical unit and exits at an angle corresponding to the first emission angle target value.

[0068] In this embodiment, a first voltage is determined based on the obtained first emission angle target value, and the focal length of the focusing optical unit is adjusted based on the first voltage. This enables adjustment of the angle of the light emitted by the emission unit, avoiding the phenomenon of excessive brightness in the center and excessive darkness at the edges during supplementary lighting, while meeting the need for supplementary lighting to any area within the field of view.

[0069] Although this application has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art based on a reading and understanding of this specification and drawings. This application includes all such modifications and variations and is limited only by the scope of the appended claims. In particular, with respect to the various functions performed by the aforementioned components, the terminology used to describe such components is intended to correspond to any component (unless otherwise indicated) that performs the specified function of said component (e.g., is functionally equivalent to it), even if structurally not equivalent to the disclosed structure performing the functions in the exemplary implementations of this specification shown herein.

[0070] That is, the above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural modifications made based on the description and drawings of this application, such as combinations of technical features between embodiments, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0072] The above description is provided to enable any person skilled in the art to implement and use this application. Various details are set forth in the above description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be implemented without using these specific details. In other embodiments, well-known processes will not be described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed herein.

[0073] It should be noted that, without conflict, the various embodiments and / or technical features described in this application can be arbitrarily combined with each other. The resulting technical solutions should also fall within the protection scope of this application.

[0074] It should be understood that the specific examples in the embodiments of this application are only for the purpose of helping those skilled in the art to better understand the embodiments of this application, and are not intended to limit the scope of the embodiments of this application. Those skilled in the art can make various improvements and modifications based on the above embodiments, and all such improvements or modifications fall within the protection scope of this application. The above descriptions are merely specific implementations of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A supplementary lighting device, applied to electronic equipment, characterized in that, The supplementary lighting device includes: a control unit, a light-emitting unit, and a focusing optical unit. The focusing optical unit is disposed on the light-emitting side of the light-emitting unit, and the control unit is electrically connected to the light-emitting unit and the focusing optical unit. The control unit is used to control the light-emitting unit to emit light, and to determine a first voltage based on the obtained first light emission angle target value, and to adjust the focal length of the focusing optical unit based on the first voltage, so that the light emitted by the light-emitting unit passes through the focusing optical unit and is emitted at an angle corresponding to the first light emission angle target value, wherein the first light emission angle target value is determined based on the focusing distance, field of view and shooting mode of the image acquisition device in the electronic device.

2. The apparatus according to claim 1, characterized in that, The supplementary lighting device further includes: a light intensity adjustment unit, which is disposed on the light-emitting side of the focusing optical unit, and the control unit is electrically connected to the light intensity adjustment unit; The control unit is configured to determine a second voltage based on the acquired first target value of supplementary light intensity, and adjust the transmittance of the light intensity adjustment unit based on the second voltage, so that the light emitted by the light-emitting unit is emitted with a light intensity corresponding to the first target value of supplementary light intensity after passing through the light intensity adjustment unit. The first target value of supplementary light intensity is determined based on the ambient light intensity of the image acquisition device in the electronic device, the focusing distance, and the shooting mode.

3. The apparatus according to claim 2, characterized in that, The light intensity modulation unit is opaque when not powered on.

4. The apparatus according to claim 1, characterized in that, The supplementary lighting device further includes a light-concentrating unit, which is disposed between the light-emitting unit and the focusing optical unit; The focusing unit is used to refract light rays emitted by the light-emitting unit that exceed an angle threshold, so that the refracted light rays converge to the focusing optical unit.

5. The apparatus according to any one of claims 2-3, characterized in that, The supplementary lighting device further includes: a light-uniforming unit, which is disposed on the light-emitting side of the focusing optical unit; The light homogenizing unit is used to homogenize the light passing through the focusing optical unit and guide the homogenized light to the light intensity modulation unit.

6. An image acquisition module, applied to electronic devices, characterized in that, The image acquisition module includes an image acquisition device and a supplementary lighting device as described in any one of claims 1-5; The supplementary lighting device is electrically connected to the image acquisition device, and the image acquisition device is electrically connected to the processing module in the electronic device.

7. An electronic device, characterized in that, include: The image acquisition module and processing module as described in claim 6, wherein the processing module is electrically connected to the image acquisition module; The processing module is used to acquire the focus distance, field of view, and shooting mode of the image acquisition device in the image acquisition module, determine a first emission angle target value based on the focus distance, the field of view, and the shooting mode, and send the first emission angle target value to the supplementary lighting device in the image acquisition module so that the supplementary lighting device emits light at an angle corresponding to the first emission angle target value.

8. The electronic device according to claim 7, characterized in that, The electronic device also includes: an ambient light sensor; The ambient light sensor is used to collect the ambient light intensity where the image acquisition device is located; The processing module is configured to determine a first target value for fill light intensity based on the ambient light intensity, the focusing distance, and the shooting mode, and send the first target value for fill light intensity to the fill light device so that the fill light device emits light with a light intensity corresponding to the first target value for fill light intensity.

9. The electronic device according to claim 8, characterized in that, The processing module is further configured to respond to a selection command generated by the user triggering the shooting angle mode selection button on the display interface of the electronic device, determine the shooting angle mode, determine a second emission angle target value and a second supplementary light intensity target value according to the shooting angle mode, the ambient light intensity and the shooting mode, and send the second emission angle target value and the second supplementary light intensity target value to the supplementary light device, so that the supplementary light device emits light at an angle corresponding to the second emission angle target value, and emits light with a light intensity corresponding to the second supplementary light intensity target value.

10. A supplementary lighting method, applied to electronic devices, characterized in that, include: The focusing distance, field of view, and shooting mode of the image acquisition device in the image acquisition module of the electronic device are obtained; The target value of the first emission angle is determined based on the focusing distance, the field of view, and the shooting mode; The first emission angle target value is sent to the supplementary lighting device in the image acquisition module, so that the supplementary lighting device emits light at an angle corresponding to the first emission angle target value.

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