Image acquisition device and adjusting method thereof

Abstract

An image acquisition device comprises a substrate, a first light-emitting module, a second light-emitting module, an image acquisition module and a control module. The first light emitting module is used for providing a first light beam with first brightness distribution. The second light emitting module is used for providing a second light beam with second brightness distribution. The image acquisition module is used for acquiring an environment image irradiated by the illumination light beam to obtain an image signal. The control module is electrically connected with the first light-emitting module, the second light-emitting module and the image acquisition module, and is used for generating an adjusting signal and adjusting the current of the first light-emitting module and the current of the second light-emitting module according to the adjusting signal. In addition, the invention also provides an adjusting method of the image acquisition device.

Description

Technical Field

[0001] The present invention relates to an electronic device and a method of using the same, and more particularly to an image acquisition device and an adjustment method thereof. Background Art

[0002] Currently, surveillance cameras with wide viewing angles are widely used in various environments. With modern technology, they are often paired with wide-angle, ultra-wide-angle, or fisheye lenses to capture a wider viewing angle. Furthermore, in environments with insufficient lighting, additional light sources are often used to enhance surveillance effectiveness. However, different environments and installation methods require different types of surveillance cameras to avoid insufficient light or overexposure. Therefore, optimizing camera performance for different usage scenarios remains a key goal in this field. Summary of the Invention

[0003] The present invention provides an image acquisition device and an adjustment method thereof, which can control the luminous effect according to different usage scenarios to maintain good image acquisition quality.

[0004] The present invention provides an image capture device comprising a substrate, a first light-emitting module, a second light-emitting module, an image capture module, and a control module. The first light-emitting module is disposed on the substrate and is configured to provide a first light beam having a first brightness distribution. The second light-emitting module is disposed on the substrate and is configured to provide a second light beam having a second brightness distribution. The image capture module is configured to capture an image of an environment illuminated by an illumination beam to obtain an image signal. The illumination beam includes a first light beam and a second light beam. The control module is electrically connected to the first light-emitting module, the second light-emitting module, and the image capture module and is configured to generate an adjustment signal and adjust the current of the first light-emitting module and the current of the second light-emitting module based on the adjustment signal.

[0005] In one embodiment of the present invention, the first light emitting module includes a plurality of first light emitting elements and a plurality of reflective elements, wherein the plurality of reflective elements are respectively located between the plurality of first light emitting elements and the center point of the image acquisition device.

[0006] In one embodiment of the present invention, the extending direction of the long sides of the plurality of reflective elements is perpendicular to the direction of the connection line between the plurality of first light-emitting elements and the center point of the image capturing device.

[0007] In one embodiment of the present invention, the width of the plurality of reflective elements is greater than five times the width of the plurality of first light-emitting elements.

[0008] In one embodiment of the present invention, the distance between a side of the plurality of reflective elements adjacent to the substrate and the center of the corresponding plurality of first light-emitting elements is smaller than the width of the plurality of first light-emitting elements.

[0009] In one embodiment of the present invention, each of the plurality of reflective elements includes a first reflective surface and a second reflective surface connected to each other. The first reflective surface is located between the substrate and the second reflective surface. A first angle between the first reflective surface and a reference plane parallel to the substrate is greater than a second angle between the second reflective surface and the reference plane.

[0010] In one embodiment of the present invention, the first reflective surface and the second reflective surface are both planes.

[0011] In one embodiment of the present invention, the first angle is between 55 degrees and 85 degrees, and the second angle is between 40 degrees and 70 degrees.

[0012] In one embodiment of the present invention, the minimum distance between the first reflective surface on a side remote from the substrate and the substrate is greater than the height of the plurality of first light-emitting elements and less than twice the height of the plurality of first light-emitting elements. The minimum distance between the second reflective surface on a side remote from the substrate and the substrate is greater than twice the height of the plurality of first light-emitting elements.

[0013] In one embodiment of the present invention, the second light-emitting module includes a plurality of second light-emitting elements, and the plurality of second light-emitting elements are off-axis light-emitting diodes.

[0014] In one embodiment of the present invention, the maximum luminous intensity of the light-emitting element in the first light-emitting module is less than the maximum luminous intensity of the light-emitting element in the second light-emitting module.

[0015] In one embodiment of the present invention, the image capture device further includes a gravity sensor disposed on the substrate for sensing the installation status of the image capture device to obtain an installation signal. The control module generates a first activation signal and a second activation signal based on the installation signal, and further activates the first light-emitting module and the second light-emitting module based on the first activation signal and the second activation signal, respectively.

[0016] In one embodiment of the present invention, in the above-mentioned first brightness distribution, the average brightness with a viewing angle less than or equal to 60 degrees is less than the average brightness with a viewing angle greater than 60 degrees, and in the second brightness distribution, the average brightness with a viewing angle less than or equal to 60 degrees is greater than the average brightness with a viewing angle greater than 60 degrees.

[0017] The present invention further provides an adjustment method for an image acquisition device, comprising installing an image acquisition device, the image acquisition device comprising a substrate, a first light-emitting module, a second light-emitting module, an image acquisition module, and a control module; activating the first light-emitting module and the second light-emitting module to respectively provide a first light beam having a first brightness distribution and a second light beam having a second brightness distribution, thereby forming an illumination beam; acquiring an ambient image illuminated by the illumination beam to obtain an image signal; generating an adjustment signal based on the image signal; and adjusting a current of the first light-emitting module and a current of the second light-emitting module based on the adjustment signal.

[0018] In one embodiment of the present invention, the step of activating the first light-emitting module and the second light-emitting module to provide the first light beam and the second light beam, respectively, to form the illumination beam further includes: sensing the installation status of the image acquisition device to obtain an installation signal; generating a first activation signal and a second activation signal based on the installation signal; and activating the first light-emitting module and the second light-emitting module, respectively, based on the first activation signal and the second activation signal.

[0019] In one embodiment of the present invention, the step of generating the first start signal and the second start signal based on the installation signal further includes: analyzing the installation signal to generate inclination information of the image capture device; and determining the first start signal and the second start signal based on the inclination information of the image capture device, wherein the first start signal is related to a percentage of the maximum operating current of the first light-emitting module, and the second start signal is related to a percentage of the maximum operating current of the second light-emitting module.

[0020] In one embodiment of the present invention, the step of generating an adjustment signal based on the image signal further includes: sensing an area in the image signal with a viewing angle less than 30 degrees to obtain a first brightness signal; sensing an area in the image signal with a viewing angle greater than 150 degrees to obtain a second brightness signal; and generating an adjustment signal based on the first brightness signal and the second brightness signal.

[0021] In one embodiment of the present invention, the steps of sensing the maximum brightness of an area in the image signal with a viewing angle less than 30 degrees as a first brightness signal and sensing the maximum brightness of an area in the image signal with a viewing angle greater than 150 degrees as a second brightness signal further include: configuring a first object to be acquired in an environment corresponding to an area with a viewing angle less than 30 degrees; configuring a second object to be acquired in an environment corresponding to an area with a viewing angle greater than 150 degrees; sensing the maximum brightness of the first object to be acquired to obtain a first brightness signal; and sensing the maximum brightness of the second object to be acquired to obtain a second brightness signal.

[0022] In one embodiment of the present invention, the first object to be acquired and the second object to be acquired are both white objects, and the first object to be acquired is the same as the second object to be acquired.

[0023] In one embodiment of the present invention, the first brightness signal is related to the maximum brightness of the first object to be captured illuminated by the illumination beam, and the second brightness signal is related to the maximum brightness of the second object to be captured illuminated by the illumination beam.

[0024] Based on the above, in the image capture device and adjustment method thereof of the present invention, the image capture device includes a substrate, a first light-emitting module, a second light-emitting module, an image capture module, and a control module. The first light-emitting module is configured to provide a first light beam having a first brightness distribution, and the second light-emitting module is configured to provide a second light beam having a second brightness distribution. The control module is electrically connected to the first light-emitting module, the second light-emitting module, and the image capture module, and is configured to generate an adjustment signal based on an image signal captured by the image capture module. The control module then adjusts the current of the first light-emitting module and the current of the second light-emitting module based on the adjustment signal, thereby forming an optimized illumination beam to achieve a controlled lighting effect of the image capture device. In this way, the lighting effect can be controlled according to different usage scenarios to maintain good image capture quality.

[0025] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 FIG. 1 is a perspective schematic diagram of an image acquisition device according to an embodiment of the present invention.

[0027] Figure 2 for Figure 1 A schematic top view of an image acquisition device.

[0028] Figure 3 for Figure 1 A three-dimensional partially enlarged schematic diagram of an image acquisition device.

[0029] Figure 4 for Figure 1 A side view schematic diagram of a first light source module of an image acquisition device.

[0030] Figure 5 for Figure 1 A front view schematic diagram of a first light source module of an image acquisition device.

[0031] Figure 6A and Figure 6B They are respectively a light intensity distribution diagram and a light intensity curve diagram of the first light beam.

[0032] Figure 7A and Figure 7B They are respectively a light intensity distribution diagram and a light intensity curve diagram of the second light beam.

[0033] Figure 84 is a flowchart of a method for adjusting an image acquisition device according to an embodiment of the present invention.

[0034] Figure 9 FIG. 1 is a schematic diagram of sensing a first object to be acquired according to an embodiment of the present invention.

[0035] Figure 10 FIG. 1 is a schematic diagram of sensing a second object to be acquired according to an embodiment of the present invention.

[0036] Figure 11 FIG. 1 is a schematic diagram of current matching between a first light-emitting module and a second light-emitting module according to an embodiment of the present invention.

[0037] Figure 12 is a light intensity curve diagram after the first light beam and the second light beam are mixed.

[0038] The following are the descriptions of the reference numerals:

[0039] 12: The first object to be obtained

[0040] 14: The second object to be obtained

[0041] 100: Image acquisition device

[0042] 110:Substrate

[0043] 120: first light emitting module

[0044] 122: first light emitting element

[0045] 124: Reflective element

[0046] 130: Second light emitting module

[0047] 132: Second light-emitting element

[0048] 140: Image acquisition module

[0049] A1: First Angle

[0050] A2: Second Angle

[0051] B1, B2: line segment

[0052] C: Matching reference lines

[0053] D1, D2: width

[0054] D3, D4, D6: distance

[0055] D5: Height

[0056] P11, P12, P21, P22: Reference points

[0057] R1: first reflective surface

[0058] R2: Second reflective surface

[0059] S200~S204: Steps DETAILED DESCRIPTION

[0060] For the convenience and clarity of explanation, the thickness or size of each element in the drawings is exaggerated, omitted or schematically represented to facilitate understanding and reading by those skilled in the art. The size of each element is not exactly its actual size and is not intended to limit the conditions under which the present invention can be implemented. Therefore, it has no technical significance. Any structural modification, change in proportional relationship or adjustment of size shall still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. The same reference numerals will be used to represent the same or similar elements in all drawings.

[0061] Figure 1 FIG. 1 is a perspective schematic diagram of an image acquisition device according to an embodiment of the present invention. Figure 2 for Figure 1 Schematic diagram of the top view of the image acquisition device. Figure 1 and Figure 2 . This embodiment provides an image acquisition device 100, comprising a substrate 110, a first light-emitting module 120, a second light-emitting module 130, an image acquisition module 140, and a control module. The image acquisition device 100 is, for example, an ultra-wide-angle camera or a panoramic camera, suitable for being configured on the ceiling of an indoor space to acquire images of an indoor environment, or configured in an outdoor space to acquire images of an outdoor environment. In this embodiment, the first light-emitting module 120, the second light-emitting module 130, and the image acquisition module 140 are all configured on the substrate 110, and the control module (not shown) is electrically connected to the first light-emitting module 120, the second light-emitting module 130, and the image acquisition module 140, thereby controlling the light-emitting effect of the image acquisition device 100, so that the light-emitting effect can be controlled according to different usage scenarios to maintain good image acquisition quality. In this embodiment, the substrate 110 is, for example, a circuit board or a housing. That is, in different embodiments, the first light-emitting module 120 and the second light-emitting module 130 can be configured on different substrates from the image acquisition module 140.

[0062] Figure 3 for Figure 1 A three-dimensional partially enlarged schematic diagram of an image acquisition device. Figure 4 for Figure 1 A side view schematic diagram of a first light source module of an image acquisition device. Figure 5 for Figure 1 A front view schematic diagram of the first light source module of the image acquisition device. Figures 3 to 5. The first light-emitting module 120 includes a plurality of first light-emitting elements 122 and a plurality of reflective elements 124. The plurality of first light-emitting elements 122 may be, for example, light-emitting diodes. In some embodiments, the plurality of first light-emitting elements 122 may be, for example, off-axis infrared light-emitting diodes for providing infrared light beams. For example, the first light-emitting element 122 may be, for example, an off-axis infrared light-emitting diode having a maximum light intensity in the positive 57-degree direction of the X-axis and a maximum light intensity in the 0-degree direction of the Y-axis, but the present invention is not limited thereto. Through this off-axis characteristic, the emitted light beam can be emitted in a specific direction, thereby increasing the controllability of the light emission direction and improving convenience. The plurality of reflective elements 124 are respectively located between the plurality of first light-emitting elements 122 and the center point position of the image acquisition device 100, and the extension direction of the long sides of the plurality of reflective elements 124 is perpendicular to the direction of the line connecting the plurality of first light-emitting elements 122 to the center point position of the image acquisition device 100, such as Figure 3 As shown. The number of the plurality of first light-emitting elements 122 is the same as the number of the plurality of reflective elements 124, and each first light-emitting element 122 is matched with a corresponding reflective element 124. In this embodiment, the number of the plurality of first light-emitting elements 122 and the number of the plurality of reflective elements 124 are, for example, 4 groups, which are symmetrically arranged, but the present invention is not limited thereto. In some embodiments, one reflective element 124 can also correspond to and match two or more first light-emitting elements 122, and the present invention is not limited thereto. In different embodiments, the shape of the plurality of reflective elements 124 can be designed to be square or non-rectangular, and the extension direction of the short side of the reflective element 124 can be designed to be perpendicular to the direction of the line connecting the plurality of first light-emitting elements 122 to the center point of the image acquisition device 100, or there can be no specific symmetrical design. In other words, the plurality of reflective elements 124 can be customized differently according to the characteristics of the plurality of first light-emitting elements 122 and the lighting requirements, and the present invention is not limited thereto.

[0063] Figure 6A and Figure 6B They are respectively the light intensity distribution diagram and the light intensity curve diagram of the first light beam. Figure 6A 90X indicates a positive 90-degree position in the X direction, -90X indicates a negative 90-degree position in the X direction, 90Y indicates a positive 90-degree position in the Y direction, and -90Y indicates a negative 90-degree position in the Y direction. Figures 3 to 6B. In this embodiment, since the multiple reflective elements 124 are respectively located between the multiple first light-emitting elements 122 and the center point position of the image acquisition device 100, the light beams emitted by the multiple first light-emitting elements 122 will not be directly directed to the center position of the image acquisition device 100 through the reflection effect of the multiple reflective elements 124, thereby enabling the first light-emitting module 120 to provide a first light beam with a first brightness distribution (i.e., the light intensity at a small viewing angle is less than the light intensity at a large viewing angle). In a preferred embodiment, the first light-emitting module 120 provides a first light beam with a first brightness distribution. In the first brightness distribution, the average brightness at a viewing angle less than or equal to 60 degrees is less than the average brightness at a viewing angle greater than 60 degrees, such as Figure 6A and Figure 6B is displayed.

[0064] More specifically, in this embodiment, the width D1 of the reflective element 124 is greater than five times the width D2 of the first light-emitting element 122. For example, the width D1 of the reflective element 124 is 19.5 mm, while the width D2 of the first light-emitting element 122 is 3.8 mm, but the present invention is not limited to this. Furthermore, the distance D3 from the side of the reflective element 124 adjacent to the substrate 110 to the center of the corresponding first light-emitting element 122 is less than the width D2 of the first light-emitting element 122. For example, the distance D3 from the side of the reflective element 124 adjacent to the substrate 110 to the center of the corresponding first light-emitting element 122 is 2.81 mm, while the width D2 of the first light-emitting element 122 is 3.8 mm, but the present invention is not limited to this. Furthermore, in this embodiment, each reflective element 124 may include a first reflective surface R1 and a second reflective surface R2 connected to each other. The first reflective surface R1 is located between the substrate 110 and the second reflective surface R2. Both the first reflective surface R1 and the second reflective surface R2 are planar. However, in different embodiments, the first reflective surface R1 and the second reflective surface R2 may also be designed as curved surfaces, and the present invention is not limited thereto. The minimum distance D4 between the side of the first reflective surface R1 away from the substrate 110 and the substrate 110 is greater than the height D5 of the first light-emitting element 122 and less than twice the height D5 of the first light-emitting element 122. For example, the minimum distance D4 between the side of the first reflective surface R1 away from the substrate 110 and the substrate 110 is 3.24 mm, and the height D5 of the first light-emitting element 122 is 2.3 mm. The minimum distance D6 between the side of the second reflective surface R2 away from the substrate 110 and the substrate 110 is greater than twice the height D5 of the plurality of first light-emitting elements 122. For example, the minimum distance D6 between the side of the second reflective surface R2 away from the substrate 110 and the substrate 110 is 5.20 mm, and the height D5 of the first light-emitting element 122 is 2.3 mm. However, in different embodiments, the height and width of the plurality of reflective elements 124 may be customized according to the characteristics of the plurality of first light-emitting elements 122 and lighting requirements, and the present invention is not limited thereto.

[0065] It is worth mentioning that the first angle A1 between the first reflective surface R1 and the reference plane parallel to the substrate 110 is greater than the second angle R2 between the second reflective surface R2 and the reference plane. For example, the first angle A1 is between 55 degrees and 85 degrees, and the second angle A2 is between 40 degrees and 70 degrees. In this way, the design of the reflective element 124 can effectively reflect the light beam emitted by the first light-emitting element 122 to the range of the maximum viewing angle, thereby forming a Figure 6A and Figure 6B In a preferred embodiment, the first angle A1 is designed to be 70 degrees, and the second angle A2 is designed to be 55 degrees, but the present invention is not limited thereto.

[0066] Please continue to refer to Figures 1 to 3 . The second light-emitting module 130 is arranged on the substrate 110, and includes a plurality of second light-emitting elements 132. Unlike the first light-emitting module 120, the second light-emitting module 130 does not have a reflective element. The plurality of second light-emitting elements 132 are similar to the plurality of first light-emitting elements 122, such as off-axis infrared light-emitting diodes, for providing infrared light beams. For example, the second light-emitting element 132 is, for example, an off-axis infrared light-emitting diode having maximum light intensity in a specific angular direction in a specific axis, but the present invention is not limited thereto. Through this off-axis characteristic, the emitted light beam can be emitted in a specific direction, thereby increasing the controllability of the light emission direction and thereby improving convenience. In this embodiment, the maximum luminous intensity of the light-emitting elements in the first light-emitting module 120 (i.e., the plurality of first light-emitting elements 122) can be designed to be less than the maximum luminous intensity of the light-emitting elements in the second light-emitting module 130 (i.e., the plurality of second light-emitting elements 132), but the present invention is not limited thereto. In this embodiment, the number of the plurality of second light emitting elements 132 is similar to the number of the plurality of first light emitting elements 122 , for example, four groups, which are symmetrically arranged, but the present invention is not limited thereto.

[0067] Figure 7A and Figure 7B The light intensity distribution diagram and light intensity curve diagram of the second light beam are shown respectively. Figure 3 、 Figure 7A and Figure 7B In this embodiment, since the plurality of second light-emitting modules 130 do not have a reflective element, the light beams emitted by the plurality of second light-emitting elements 132 will present the original light distribution of the light-emitting elements, thereby enabling the second light-emitting module 130 to provide a second light beam having a second brightness distribution (i.e., the light intensity at a small viewing angle is greater than the light intensity at a large viewing angle). In a preferred embodiment, the second light-emitting module 130 provides a second light beam having a second brightness distribution. In the second brightness distribution, the average brightness at a viewing angle of less than or equal to 60 degrees is greater than the average brightness at a viewing angle of greater than 60 degrees, such as Figure 7A and Figure 7B In other words, the light intensity distribution of the first light beam is different from the light intensity distribution of the second light beam.

[0068] Please continue to refer to Figure 1 and Figure 2In this embodiment, the image acquisition module 140 is disposed on the substrate 110 to acquire an environmental image illuminated by an illumination light beam to obtain an image signal. The illumination light beam includes the first light beam and the second light beam described above. The image acquisition module 140 includes, for example, an optical lens and a light sensing element. The optical lens is, for example, a wide-angle lens, an ultra-wide-angle lens, or a fisheye lens, and the light sensing element is, for example, a charge coupled device (CCD) or a complementary metal oxide semiconductor transistor (CMOS), but the present invention is not limited thereto.

[0069] A control module (not shown) is electrically connected to the first light-emitting module 120, the second light-emitting module 130, and the image capture module 140. It generates an adjustment signal based on the image signal obtained by the image capture module 140 and adjusts the current of the first light-emitting module 120 and the current of the second light-emitting module 130 based on the adjustment signal. This adjusts the ratio of the first light beam to the second light beam, thereby adjusting the illumination beam and thereby controlling the lighting effect of the image capture device 100. The control module may be, for example, a central processing unit (CPU), or other programmable general-purpose or special-purpose microprocessor, digital signal processor (DSP), programmable controller, application-specific integrated circuit (ASIC), or other similar components or combinations thereof, but the present invention is not limited thereto. In this way, the image capture device 100 can control the lighting effect according to different usage scenarios to maintain good image quality. Detailed adjustment methods will be described in the following sections.

[0070] In this embodiment, the image capture device 100 further includes a gravity sensor (not shown) disposed on the substrate 110 and electrically connected to the control module. This gravity sensor is configured to sense the installation status of the image capture device 100, thereby generating an installation signal, which can be transmitted to the control module. For example, the gravity sensor can be a gravity sensor, and the installation status can be, for example, whether the image capture device 100 is installed on the ceiling of an indoor space or on a wall of an outdoor space. In this embodiment, the control module generates a first activation signal and a second activation signal based on the installation signal sensed by the gravity sensor, and further activates the first light-emitting module and the second light-emitting module based on the first activation signal and the second activation signal, respectively. For example, when the image capture device 100 is installed on the ceiling of an indoor space, based on the sensing result of the gravity sensor, the control module generates a first activation signal that causes the current ratio of the first light source module 120 to be greater than the current ratio of the second light source module 130. This ensures that the first light beam has a greater proportion of gravity than the second light beam in the illumination beam, thereby adapting to the indoor environment and maintaining good image capture quality for the image capture device 100. When the image capture device 100 is mounted on a wall in an outdoor space, the control module generates a second activation signal based on the sensing result of the gravity sensor element, which causes the current ratio of the first light source module 120 to be less than the current ratio of the second light source module 130. This makes the proportion of the first light beam in the illumination beam less than that of the second light beam, thereby adapting to the outdoor environment and allowing the image capture device 100 to maintain good image capture quality.

[0071] Figure 8 This is a flowchart of the steps of the adjustment method of the image acquisition device according to one embodiment of the present invention. Figure 1 and Figure 8 The adjustment method of the image acquisition device of this embodiment can be applied to at least Figure 1 The image acquisition device 100 is shown, so the following description is taken as an example. However, those skilled in the art will understand that the adjustment method of the image acquisition device of the embodiment of the present invention is not limited to application in Figure 1 The image acquisition device 100 is not limited to the sequence of steps in the flowchart of FIG8 . In the adjustment method of the image acquisition device 100 of this embodiment, step S200 is first performed to install the image acquisition device 100. The image acquisition device 100 includes a substrate 110, a first light-emitting module 120, a second light-emitting module 130, an image acquisition module 140, and a control module.

[0072] Then, after the above steps, step S201 is executed to activate the first light-emitting module 120 and the second light-emitting module 130 to respectively provide a first light beam having a first brightness distribution and a second light beam having a second brightness distribution, thereby forming an illumination beam. In a preferred embodiment, in the first brightness distribution, the average brightness at a viewing angle of 60 degrees or less is lower than the average brightness at a viewing angle of greater than 60 degrees, while in the second brightness distribution, the average brightness at a viewing angle of 60 degrees or less is higher than the average brightness at a viewing angle of greater than 60 degrees. For example, the first light-emitting module 120 and the second light-emitting module 130 are activated by a control module. In one embodiment, the method of step S201 further includes: activating the first light-emitting module 120 at 50% of the maximum operating current of the first light-emitting module 120; and activating the second light-emitting module 120 at 50% of the maximum operating current of the second light-emitting module 130. In other words, before adjusting the image acquisition device 100 , 50% of the maximum operating current of each of the first and second light emitting modules 120 and 130 may be provided to activate the first and second light emitting modules 120 and 130 to form an initial illumination beam.

[0073] Furthermore, in one embodiment of the image capture device 100 equipped with a gravity sensor, after the above steps, the adjustment method may further include: sensing the installation status of the image capture device 100 to obtain an installation signal; generating a first activation signal and a second activation signal based on the installation signal; and activating the first light-emitting module 120 and the second light-emitting module 130 based on the first activation signal and the second activation signal, respectively. Specifically, the step of generating the first activation signal and the second activation signal based on the installation signal may further include: analyzing the installation signal to generate tilt information of the image capture device 100; and determining the first activation signal and the second activation signal based on the tilt information of the image capture device 100. The first activation signal is related to a percentage of the maximum operating current of the first light-emitting module 120, and the second activation signal is related to a percentage of the maximum operating current of the second light-emitting module 130. In other words, after activating the image capture device 100, the installation status of the image capture device 100 can be further sensed to determine the installation location of the image capture device 100, thereby adjusting the current of the first light-emitting module 120 and the second light-emitting module 130 to change the initial illumination beam to one that is more adaptable to the environment. However, the present invention is not limited to this. In this embodiment, the aforementioned tilt angle information, for example, covers all angles from ceiling mount to wall mount. Following the above steps, step S202 is then executed to acquire an image of the environment illuminated by the illumination beam to obtain an image signal. For example, the image capture module 140 acquires the image signal to obtain the image of the environment.

[0074] Figure 9 FIG. 1 is a schematic diagram of sensing a first object to be acquired according to an embodiment of the present invention. Figure 10 This is a schematic diagram of sensing the second object to be acquired according to an embodiment of the present invention. Figure 1 、 Figures 8 to 10 After the above step S202, step S203 is then executed to generate an adjustment signal according to the image signal. Specifically, the control module can calculate the required adjustment signal according to the image signal. This adjustment signal is related to the current matching between the first light emitting module 120 and the second light emitting module 130, such as Figure 11 Specifically, this step may further include sensing an area of ​​the image signal with a viewing angle less than 30 degrees to obtain a first brightness signal; sensing an area of ​​the image signal with a viewing angle greater than 150 degrees to obtain a second brightness signal; and generating an adjustment signal based on the first brightness signal and the second brightness signal. For example, the first object to be captured 12 may be placed in an environment corresponding to an area with a viewing angle less than 30 degrees (i.e., an area closer to the center of the image), and the second object to be captured 14 may be placed in an environment corresponding to an area with a viewing angle greater than 150 degrees (i.e., an area closer to the edge of the image). The first object to be captured 12 and the second object to be captured 14 may both be white objects, such as white paper. In some embodiments, the first object to be captured 12 may be the same as the second object to be captured 14. Next, the image capture module 140 senses the maximum brightness of the first object to be captured 12 to obtain a first brightness signal, and senses the maximum brightness of the second object to be captured 14 to obtain a second brightness signal. The first brightness signal is related to the maximum brightness of the first object to be captured 12 illuminated by the illumination beam, while the second brightness signal is related to the maximum brightness of the second object to be captured 14 illuminated by the illumination beam. In other words, the image signal includes the maximum brightness information of the first object 12 to be captured and the maximum brightness information of the second object 14 to be captured.

[0075] Finally, after the above steps, step S204 is executed to adjust the current of the first light-emitting module 120 and the current of the second light-emitting module 130 based on the adjustment signal. In this way, the image capture device 100 can control the lighting effect according to different usage scenarios to maintain good image quality. Furthermore, in some embodiments, the image capture device 100 may continue to execute steps S202 to S204 as needed to continuously optimize the illumination beam, thereby maintaining good image quality.

[0076] Figure 11 FIG. 1 is a schematic diagram of current matching between a first light-emitting module and a second light-emitting module according to an embodiment of the present invention. Figure 12 This is the light intensity curve after the first and second light beams are mixed. Please refer to Figure 8 、 Figure 11 and Figure 12 It is worth mentioning that in any step from step S201 to step S204, for example, before starting the light-emitting module or during the adjustment of the light-emitting module current, the current matching method of the first light-emitting module 120 and the second light-emitting module 130 can be selected according to different situations to achieve different light mixing effects and further improve the adjustment quality. For example, in this embodiment, Figure 11 The matching reference line C in the current matching diagram shown is used as the starting current matching of the first light-emitting module 120 and the second light-emitting module 130. Figure 11 The displayed line segment B1 represents the current size corresponding to the current percentage of the first light-emitting module 120, and the line segment B2 represents the current size corresponding to the current percentage of the second light-emitting module 130. When the line segment B1 or the line segment B2 is at the highest position, it represents the maximum operating current of the first light-emitting module 120 or the second light-emitting module 130 (that is, the percentage of the maximum operating current is 100%). When the line segment B1 or the line segment B2 is at the lowest position, it represents the minimum operating current of the first light-emitting module 120 or the second light-emitting module 130 (that is, the percentage of the maximum operating current is 0%). Figure 11 In FIG, reference point P11 indicates that the first light emitting module 120 is started at 100% of the maximum operating current of the first light emitting module 120, and reference point P21 indicates that the second light emitting module 130 is started at 100% of the maximum operating current of the second light emitting module 130. In other words, in this embodiment, the maximum operating current of the second light emitting module 130 is designed to be greater than the maximum operating current of the first light emitting module 120, as shown in FIG. Figure 11 As shown, the present invention is not limited thereto. In this embodiment, for example, a matching reference line C passing through reference point P12 (i.e., the position of 50% of the maximum operating current of the first light-emitting module 120) and reference point P22 (i.e., the position of 50% of the maximum operating current of the second light-emitting module 130) is used as the respective current matching methods of the first light-emitting module 120 and the second light-emitting module 130. That is, in this scenario, the first light-emitting module 120 is started at 50% of the maximum operating current of the first light-emitting module 120, and the second light-emitting module 130 is started at 50% of the maximum operating current of the second light-emitting module 130. The optimized light intensity curve formed by mixing the first light beam and the second light beam is shown as follows: Figure 12In different embodiments, matching reference lines at other locations can be selected for current matching between the first light-emitting module 120 and the second light-emitting module 130 according to different scenarios, and the present invention is not limited thereto. Furthermore, in different embodiments, the current matching between the first light-emitting module 120 and the second light-emitting module 130 can be designed so that the sum is not equal to 100% of the maximum operating current, and the present invention is not limited thereto. Therefore, before activating the light-emitting modules, or after the control module performs calculations based on the aforementioned image signal, an optimized light intensity distribution can be generated, thereby achieving the desired matching current between the first light-emitting module 120 and the second light-emitting module 130.

[0077] In summary, in the image capture device and adjustment method thereof of the present invention, the image capture device includes a substrate, a first light-emitting module, a second light-emitting module, an image capture module, and a control module. The first light-emitting module is configured to provide a first light beam having a first brightness distribution, and the second light-emitting module is configured to provide a second light beam having a second brightness distribution. The control module is electrically connected to the first light-emitting module, the second light-emitting module, and the image capture module, and is configured to generate an adjustment signal based on an image signal captured by the image capture module. The control module then adjusts the currents of the first and second light-emitting modules based on the adjustment signal, thereby forming an optimized illumination beam to achieve the desired lighting effect of the image capture device. This allows the lighting effect to be controlled according to different usage scenarios to maintain good image capture quality.

[0078] Although the present invention has been disclosed above by way of embodiments, they are not intended to limit the present invention. Any person skilled in the art may make slight modifications and changes without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the appended claims.

Claims

1. An image acquisition device, characterized in that: include: substrate; A first light emitting module is disposed on the substrate and is used to provide a first light beam with a first brightness distribution; A second light-emitting module is disposed on the substrate and is used to provide a second light beam with a second brightness distribution; an image acquisition module, configured to acquire an image of an environment illuminated by the illumination beam to obtain an image signal, wherein the illumination beam includes the first beam and the second beam; as well as The control module is electrically connected to the first light emitting module, the second light emitting module and the image acquisition module, and is used for generating an adjustment signal and adjusting the current of the first light emitting module and the current of the second light emitting module according to the adjustment signal.

2. The image acquisition device according to claim 1, wherein: The first light emitting module includes a plurality of first light emitting elements and a plurality of reflective elements. The plurality of reflective elements are respectively located between the plurality of first light emitting elements and a center point of the image acquisition device.

3. The image acquisition device according to claim 2, wherein: An extension direction of the long sides of the plurality of reflective elements is perpendicular to a direction from a line connecting the plurality of first light-emitting elements to a center point of the image acquisition device.

4. The image acquisition device according to claim 2, wherein: A width of the plurality of reflective elements is greater than five times a width of the plurality of first light emitting elements.

5. The image acquisition device according to claim 2, wherein: A distance from one side of the plurality of reflective elements adjacent to the substrate to a center of the corresponding plurality of first light-emitting elements is smaller than a width of the plurality of first light-emitting elements.

6. The image acquisition device according to claim 2, wherein: Each of the multiple reflective elements includes a first reflective surface and a second reflective surface connected to each other, the first reflective surface is located between the substrate and the second reflective surface, and the first angle between the first reflective surface and a reference plane parallel to the substrate is greater than the second angle between the second reflective surface and the reference plane.

7. The image acquisition device according to claim 6, wherein: The first reflecting surface and the second reflecting surface are both planes.

8. The image acquisition device according to claim 6, wherein: The first angle is between 55 degrees and 85 degrees, and the second angle is between 40 degrees and 70 degrees.

9. The image acquisition device according to claim 6, wherein: The minimum distance between the side of the first reflecting surface away from the substrate and the substrate is greater than the height of the multiple first light-emitting elements and less than twice the height of the multiple first light-emitting elements, and the minimum distance between the side of the second reflecting surface away from the substrate and the substrate is greater than twice the height of the multiple first light-emitting elements.

10. The image acquisition device according to claim 1, wherein: The second light-emitting module includes a plurality of second light-emitting elements, and the plurality of second light-emitting elements are off-axis light-emitting diodes.

11. The image acquisition device according to claim 1, wherein: The maximum luminous intensity of the light-emitting elements in the first light-emitting module is less than the maximum luminous intensity of the light-emitting elements in the second light-emitting module.

12. The image acquisition device according to claim 1, wherein: Also includes: The gravity sensing element is configured on the substrate to sense the installation status of the image acquisition device to obtain an installation signal. The control module generates a first start signal and a second start signal according to the installation signal, and then respectively starts the first light-emitting module and the second light-emitting module according to the first start signal and the second start signal.

13. The image acquisition device according to claim 1, wherein: In the first brightness distribution, the average brightness at a viewing angle of less than or equal to 60 degrees is smaller than the average brightness at a viewing angle of greater than 60 degrees. In the second brightness distribution, the average brightness at a viewing angle of less than or equal to 60 degrees is larger than the average brightness at a viewing angle of greater than 60 degrees.

14. A method for adjusting an image acquisition device, characterized in that: include: Install an image acquisition device, the image acquisition device including a substrate, a first light-emitting module, a second light-emitting module, an image acquisition module and a control module; activating the first light-emitting module and the second light-emitting module to respectively provide a first light beam having a first brightness distribution and a second light beam having a second brightness distribution, thereby forming an illumination light beam; Acquire an image of the environment illuminated by the illumination light beam to obtain an image signal; generating an adjustment signal according to the image signal; as well as The current of the first light emitting module and the current of the second light emitting module are adjusted according to the adjustment signal.

15. The adjustment method of the image acquisition device according to claim 14, wherein: The step of starting the first light emitting module and the second light emitting module to respectively provide the first light beam and the second light beam to form the illumination light beam further includes: sensing an installation state of the image acquisition device to obtain an installation signal; generating a first start signal and a second start signal according to the installation signal; and The first light emitting module and the second light emitting module are respectively activated according to the first activation signal and the second activation signal.

16. The adjustment method of the image acquisition device according to claim 15, wherein: The step of generating the first start signal and the second start signal according to the installation signal further includes: analyzing the installation signal to generate tilt information of the image acquisition device; and The first start-up signal and the second start-up signal are determined according to the tilt information of the image acquisition device, wherein the first start-up signal is related to a percentage of the maximum operating current of the first light-emitting module, and the second start-up signal is related to a percentage of the maximum operating current of the second light-emitting module.

17. The adjustment method of the image acquisition device according to claim 14, wherein: The step of generating the adjustment signal according to the image signal further includes: sensing an area of ​​the image signal with a viewing angle less than 30 degrees to obtain a first brightness signal; sensing an area of ​​the image signal with a viewing angle greater than 150 degrees to obtain a second brightness signal; and The adjustment signal is generated according to the first brightness signal and the second brightness signal.

18. The adjustment method of the image acquisition device according to claim 17, wherein: The step of sensing the maximum brightness of an area in the image signal having a viewing angle less than 30 degrees as the first brightness signal and sensing the maximum brightness of an area in the image signal having a viewing angle greater than 150 degrees as the second brightness signal further includes: Arranging the first object to be captured in an environment corresponding to an area with a viewing angle less than 30 degrees; Arranging the second object to be captured in an environment corresponding to an area with a viewing angle greater than 150 degrees; sensing the maximum brightness of the first object to be acquired to obtain the first brightness signal; and The maximum brightness of the second object to be acquired is sensed to obtain the second brightness signal.

19. The adjustment method of the image acquisition device according to claim 18, wherein: The first object to be acquired and the second object to be acquired are both white objects, and the first object to be acquired is the same as the second object to be acquired.

20. The adjustment method of the image acquisition device according to claim 18, wherein: The first brightness signal is related to the maximum brightness of the first object to be acquired illuminated by the illumination light beam, and the second brightness signal is related to the maximum brightness of the second object to be acquired illuminated by the illumination light beam.

Images