Dimming plate and photographic lighting system

Abstract

The utility model relates to a dimming plate and a photography lighting system, and belongs to the technical field of photography equipment, the dimming plate comprises a dimming area and a circuit area, the dimming area comprises a first light-transmitting substrate, a second light-transmitting substrate and a dimming layer, the second light-transmitting substrate and the first light-transmitting substrate are oppositely arranged, and the first light-transmitting substrate and the second light-transmitting substrate are oppositely arranged. The dimming layer is clamped between the first light-transmitting substrate and the second light-transmitting substrate, the dimming area forms a plurality of dimming subareas which are adjacently arranged along the light-transmitting surface of the dimming area in the thickness direction of the first light-transmitting substrate, and the corresponding dimming layer in each dimming subarea is independently controllable; the circuit area is arranged on the periphery of the dimming area, the circuit area is provided with a plurality of electrode pairs, and the electrode pairs are used for being connected to the dimming layers in the dimming subareas respectively. The dimming plate and the photographic lighting system are high in utilization rate and good in operation convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic and video shooting equipment, and particularly relates to a photographic light regulating board and a photographic lighting system. Background Art

[0002] With the rise of self-media and short videos, people have more and more demands for photography and video shooting. In order to fully present personalized creations, users' demands for the performance of shooting equipment are also becoming more and more diverse. Photography and videography are closely related to light. In today's video shooting scenarios, in order to make the light irradiated on the person or object to be photographed softer, generally, a soft light device needs to be placed between the photographic light and the person or object to be photographed, so that the light emitted by the photographic light is scattered by the soft light device and then irradiated on the person or object to be photographed. Common ones include soft light umbrellas, soft light boxes, soft light boards, etc. Different types of soft light devices can meet the light requirements for different shooting objects in different indoor, studio, outdoor and other scenarios. In addition, there are some scenarios that require special light effect projection on the shooting object. Therefore, in addition to soft light equipment, lighting accessories such as color filters and pattern projection films are usually used. In some shooting scenarios, completing a shooting task may require the use of various light effect equipment, including but not limited to various types of photographic equipment that achieve effects such as soft light, reflection, specific pattern projection, color change, filter, spotlight, and diffused light. This makes the shooting site occupied by various equipment, cumbersome to use, and the utilization rate of a single piece of equipment is low. Therefore, it is necessary to provide a light effect equipment with a higher utilization rate to improve the convenience of users' shooting operations. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a light regulating board and a photographic lighting system to improve the utilization rate of photographic light effect equipment and the convenience of shooting operations.

[0004] To solve the above technical problems, the utility model provides a light regulating board, which includes: a light regulating area and a circuit area. The light regulating area includes a first light-transmitting substrate, a second light-transmitting substrate and a light regulating layer. The second light-transmitting substrate is disposed opposite to the first light-transmitting substrate, and the light regulating layer is sandwiched between the first light-transmitting substrate and the second light-transmitting substrate. The light regulating area forms a plurality of light regulating partitions adjacent to each other along the light-transmitting surface of the first light-transmitting substrate in the thickness direction of the first light-transmitting substrate, and the corresponding light regulating layers in each light regulating partition are independently controllable; the circuit area is disposed on the periphery of the light regulating area, and a plurality of electrode pairs are arranged in the circuit area, and the plurality of electrode pairs are respectively used to connect to the light regulating layers in each light regulating partition.

[0005] Optionally, the light regulating layer in each light regulating partition is connected to an independent pair of electrode pairs, and the electrode pair includes a positive electrode and a negative electrode.

[0006] Optionally, a spacer is provided between adjacent dimming zones. The spacer is sandwiched between the first substrate and the second substrate and is hermetically connected to the first substrate and the second substrate.

[0007] Optionally, the dimming zone further includes a first transparent electrode layer fixed to the inner surface of the first light-transmitting substrate and a second transparent electrode layer fixed to the inner surface of the second light-transmitting substrate. The first transparent electrode layer and the second transparent electrode layer are respectively connected to the positive electrode and the negative electrode. The first transparent electrode layers in adjacent dimming zones are separated by the spacer, and the second transparent electrode layers in adjacent dimming zones are separated by the spacer.

[0008] Optionally, the dimming zone further includes a first transparent electrode layer fixed to the outer surface of the first light-transmitting substrate and a second transparent electrode layer fixed to the outer surface of the second light-transmitting substrate. The first transparent electrode layer and the second transparent electrode layer are respectively connected to the positive electrode and the negative electrode. The first transparent electrode layers in adjacent dimming zones are separated by a spacer provided on the outer surface of the first light-transmitting substrate, and the second transparent electrode layers in adjacent dimming zones are separated by a spacer provided on the outer surface of the second light-transmitting substrate;

[0009] Optionally, the dimming zone further includes a first light-transmitting protective layer and a second light-transmitting protective layer. The first light-transmitting protective layer covers the first transparent electrode layer, and the second light-transmitting protective layer covers the second transparent electrode layer.

[0010] Optionally, the dimming zone further includes a colored light-transmitting layer; or at least one of the first light-transmitting substrate and the second light-transmitting substrate is a colored light-transmitting substrate.

[0011] Optionally, the plurality of electrode pairs include a plurality of positive electrodes and a common negative electrode, and each positive electrode and the common negative electrode form an electrode pair.

[0012] Optionally, the dimming zone further includes a first transparent electrode layer and a second transparent electrode layer. The first transparent electrode layer is fixed to the surface of the first light-transmitting substrate, and the second transparent electrode layer is fixed to the surface of the second light-transmitting substrate; the second transparent electrode layers in each dimming zone are separated from each other by a spacer and are respectively connected to the positive electrode, and the first transparent electrode layer is connected to the common negative electrode.

[0013] Optionally, the first light-transmitting substrate and the second light-transmitting substrate are flexible substrates, and the dimming layer is a flexible film layer; and / or the dimming layer is a liquid crystal polymer film or an electrochromic film.

[0014] Optionally, the dimming partition includes a first dimming partition and a second dimming partition adjacent thereto. The dimming layer corresponding to the first dimming partition is a liquid crystal polymer film, and the dimming layer corresponding to the second dimming partition is an electrochromic film.

[0015] Optionally, the circuit area further includes a plurality of connection lines for connecting the electrode pairs to a dimming control device, which is a wired or wireless dimming control box.

[0016] Optionally, the circuit area further includes a waterproof layer and / or a border layer, and the border layer is provided with a first mounting member.

[0017] The present application also provides a photographic lighting system, which includes a dimming board and a light source device. The light emitted by the light source device passes through the dimming board and projects onto a shooting target. The light source device is a point light source emitting device, a line light source emitting device or a surface light source emitting device. The dimming board includes a dimming area and a circuit area. The dimming area includes a first light-transmitting substrate, a second light-transmitting substrate and a dimming layer. The second light-transmitting substrate is disposed opposite to the first light-transmitting substrate, and the dimming layer is sandwiched between the first light-transmitting substrate and the second light-transmitting substrate. The dimming area forms a plurality of dimming partitions adjacent to each other along the light-transmitting surface of the dimming area in the thickness direction of the first light-transmitting substrate. The dimming layers corresponding to the respective dimming partitions are independently controllable. The circuit area is disposed on the periphery of the dimming area, and the circuit area is provided with a plurality of electrode pairs for connecting to the dimming layers in the respective dimming partitions.

[0018] As can be seen from the above technical solutions, the beneficial effects of the present utility model are:

[0019] The dimming board and the photographic lighting system provided by the present application form a plurality of dimming partitions adjacent to each other along the light-transmitting surface of the dimming area in the dimming area composed of the first light-transmitting substrate, the second light-transmitting substrate and the dimming layer, and the plurality of electrode pairs in the circuit area are respectively connected to the independently controllable dimming layers in the respective dimming partitions, so that different driving signals can control the light transmittance of the respective dimming partitions, thereby realizing the separate adjustment of the light transmittance of the respective dimming partitions, so that the dimming board presents a variety of variable target light effects according to the combination of the light transmittances of the respective dimming partitions, forming a more abundant desired lighting effect on the shooting target, reducing the frequent replacement and handling of light effect equipment, and thus improving the utilization rate and operation convenience of the dimming board as a light effect equipment. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of a dimming board provided by an embodiment of the present application;

[0021] Figure 2 is a schematic structural diagram of a control device for a dimming board provided by an embodiment of the present application;

[0022] Figure 3 is Figure 1 Schematic cross-sectional structure diagram of the dimming board shown along the A-A' line;

[0023] Figure 4 Schematic cross-sectional structure diagram of the dimming board of an embodiment of the present application;

[0024] Figure 5 Schematic cross-sectional structure diagram of the dimming board of an embodiment of the present application;

[0025] Figure 6 Schematic structure diagram of the dimming board provided by an embodiment of the present application;

[0026] Figure 7 is Figure 6 Enlarged schematic diagram of the dimming board shown at S;

[0027] Figure 8 Schematic structure diagram of the dimming board provided by an embodiment of the present application;

[0028] Figure 9 is Figure 8 Cross-sectional structure of the dimming board shown along the C-C' line;

[0029] Figure 10 Schematic diagram of the front view of the dimming board of an embodiment of the present application;

[0030] Figure 11 is Figure 10 Schematic diagram of the back view of the dimming board shown;

[0031] Figure 12 Schematic structure diagram of a photographic lighting system of an embodiment;

[0032] Figure 13 Schematic structure diagram of a schematic diagram of another photographic lighting system of the present application.

[0033] Explanation of reference numerals is as follows:

[0034] 1, 2, 3: Dimming board;

[0035] 10: Circuit area; 11: First dimming partition; 12: Second dimming partition; 13: Third dimming partition; 14: Fourth dimming partition; 15: Fifth dimming partition;

[0036] 100: Spacer; 101: Connecting wire;

[0037] 111: First positive electrode; 112: First negative electrode; 121: Second positive electrode; 122: Second negative electrode; 131: Third positive electrode; 132: Third negative electrode; 141: Fourth positive electrode; 142: Fourth negative electrode; 151: Fifth positive electrode; 152: Fifth negative electrode;

[0038] 16: Plug-in interface; 160: Adapter cable; 17, 27: Control box; 170, 270: Housing; 171, 271: Dimming input unit; 172, 272: Display unit; 173: Interface unit; 273: Connecting wire;

[0039] 181: First light-transmissive substrate; 182: Second light-transmissive substrate; 191: Cathode layer; 192: Anode layer; 193: First light-transmissive protective layer; 194: Second light-transmissive protective layer; 195: Colored light-transmissive layer.

[0040] 22: Common negative electrode; 29: Edge wrapping layer; 290: First mounting member;

[0041] 300, 400: Photography lighting system; 301, 401: Light source device; 310: Second mounting member;

[0042] 800: Dimming layer. Detailed implementation manners

[0043] Typical implementation manners reflecting the features and advantages of the present utility model will be described in detail in the following description. It should be understood that the present utility model can have various variations in different implementation manners, all of which do not depart from the scope of the present utility model, and the descriptions and illustrations therein are for illustrative purposes in nature and not for limiting the present utility model.

[0044] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of the direction or position relationship (such as up, down, left, right, front and back, etc.) is only for facilitating the description of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the description of the positions of these elements changes, then the indication of these directions also changes accordingly.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0046] Please refer toFigures 1 to 3 , wherein Figure 1 is a schematic structural diagram of a dimming panel 1 provided by an embodiment of the present application, Figure 2 is a schematic structural diagram of a control device for a dimming panel provided by an embodiment of the present application, Figure 3 is Figure 1 a schematic cross-sectional structure diagram of the dimming panel shown along the A-A' line. The dimming panel 1 includes a circuit area 10 and a dimming area. The dimming area includes a plurality of dimming sub-areas, and the plurality of dimming sub-areas together constitute the dimming area of the dimming screen. As an example, the plurality of dimming sub-areas include a first dimming sub-area 11, a second dimming sub-area 12, a third dimming sub-area 13, a fourth dimming sub-area 14, and a fifth dimming sub-area 15. The plurality of dimming sub-areas can be regulated relatively independently. The circuit area 10 is arranged on the periphery of the dimming area, and a plurality of electrode pairs are arranged in the circuit area 10. The plurality of electrode pairs are respectively used to connect to the dimming layers 800 in each dimming sub-area.

[0047] Electrode pairs corresponding to each dimming sub-area are arranged in the circuit area 10. Each pair of electrode pairs includes a positive electrode and a negative electrode. The electrode pairs are used to transmit a driving voltage to each dimming sub-area, so that the dimming layer in the dimming sub-area changes the light transmittance under different voltages, thereby changing the light-emitting effect of each dimming sub-area of the dimming screen. Specifically, as an example, the circuit area 10 is provided with a first positive electrode 111, a first negative electrode 112, a second positive electrode 121, a second negative electrode 122, a third positive electrode 131, a third negative electrode 132, a fourth positive electrode 141, a fourth negative electrode 142, a fifth positive electrode 151, and a fifth negative electrode 152. The first positive electrode 111 and the first negative electrode 112 form a first electrode pair for applying a driving signal to the first dimming sub-area 11. The second positive electrode 121 and the second negative electrode 122 form a second electrode pair for applying a driving signal to the second dimming sub-area 12, and so on, without further elaboration.

[0048] Please refer to Figure 3 again. The dimming area 1 includes a first light-transmitting substrate 181, a second light-transmitting substrate 182, and a dimming layer 800. The second light-transmitting substrate 182 is disposed opposite to the first light-transmitting substrate 181, and the dimming layer 800 is sandwiched between the first light-transmitting substrate 181 and the second light-transmitting substrate 182. The dimming area forms a plurality of dimming sub-areas adjacent to each other along the light-transmitting surface F (i.e., the outer surface) of the dimming area in the thickness direction of the first light-transmitting substrate 181. The dimming layers corresponding to each of the dimming sub-areas 11-15 are connected to corresponding independent electrode pairs to respectively obtain different driving signals, realizing independent control of the light transmittance of the dimming layer.

[0049] A separator 100 may be provided between adjacent dimming zones. The separator 100 can isolate the driving signals of other dimming zones adjacent to the dimming zone, so as to ensure that the dimming zone can be independently controlled, and realize the zonal dimming of the dimming panel 1. The separator may be a transparent adhesive material such as EVA glue or PVB glue. It is located at the junction of adjacent dimming zones and is sandwiched between the first substrate 181 and the second substrate 182. The separator 100 is hermetically connected to the first substrate 181 and the second substrate 182. The wiring area 10 may further include a plurality of connecting lines 101 for connecting each electrode pair to the dimming control device 17. The wiring area 10 and each dimming zone may share a substrate or use different substrates respectively. Or the wiring area may not be fixed through a substrate structure, but may be a wire with an insulating outer skin that directly connects the electrodes through an inner layer metal wire. The connecting line 101 may also be fixed to the substrate of the wiring area 10 by means of metal wire pressing, bonding, etc., or may be a printed circuit formed in the wiring area 10.

[0050] The dimming zone further includes a first transparent electrode layer 191 and a second transparent electrode layer 192, and the first transparent electrode layer 191 and the second transparent electrode layer 192 are respectively fixed on the opposite inner surfaces of the first light-transmitting substrate 181 and the second light-transmitting substrate 182. The first transparent electrode layer 191 and the second transparent electrode layer 192 can be respectively used as an anode or a cathode to be connected to the positive and negative electrodes in the electrode pair of the external circuit 10. Thus, both sides of the dimming layer 800 in each dimming zone are directly connected to the conductive medium, so that the molecules in the dimming layer 800 are uniformly driven by electric force. The first transparent electrode layer 191 and the second transparent electrode layer 192 can adopt ITO electrode layers, and the corresponding first transparent electrode layers 191 in adjacent dimming zones are separated by the separator 100, and the second transparent electrode layer 192 is also separated by the separator 100.

[0051] As an example, the connection line 101 is connected to the dimming control device 17 through a cable 16 with an interface. The dimming control device can be a control device in the form of a control box, a control console, a control cabinet, etc. The dimming control device 17 includes a housing 170, a dimming input unit 171, a display unit 172, and an interface unit 173. A control circuit is arranged inside the housing, mainly including a main control circuit and a driving circuit. Among them, the user can adjust or select the target light effect through the dimming input unit 171. The dimming input unit 171 outputs the target light effect signal to the main control circuit. The main control circuit generates a set of dimming control signals according to the received target light effect signal, and generates a corresponding set of dimming driving signals according to the set of dimming control signals and outputs them to the driving circuit. The driving circuit outputs each dimming driving signal to the corresponding dimming zone through the connection line and the electrode pair in the line zone 10. The dimming layer in the dimming zone can have different light transmittances under the drive of different driving signals, so as to realize the zonal dimming of the dimming board 1. Each dimming zone forms the target light effect by combining the presented light transmission states. When the user needs different light effects, they can change, adjust, and select different target light effects through the dimming input unit 171 and conveniently and quickly obtain the light effect required for the current scene, without the need to remove the dimming board 1 and replace it with another light effect device in front of the lamp. Therefore, the utilization rate of the dimming board 1 is also correspondingly improved. It should be understood that the control circuit generally also includes a storage unit for storing various signals and data, which will not be elaborated here one by one.

[0052] As an example of the present application, the dimming control device 17 can be directly connected to the lines and electrodes of the dimming board 1 through a cable with an interface, or can be connected through an adapter cable 160 to achieve remote control. As another example, the driving circuit can also be arranged in the line zone 10 of the dimming board 1. The dimming input unit 171 can be various input components implemented by buttons, knobs, dials, joysticks, touch screens, etc., and the present application is not limited thereto. The display unit 172 can be used to display the target light effect signal. For example, the target light effect signal can be light effect mode information, such as "hard light", "soft light", "light blue filter", "gradient filter", "hard light and soft light boundary", etc.; of course, the display unit 172 can also display the dimming zone - light transmittance corresponding information. For example, the numbers of each dimming zone and the corresponding dimming control signals (light transmittance) are correspondingly displayed. For example, the first dimming zone 11 to the fifth dimming zone 15 respectively correspond to the normalized light transmittance information 100%, 75%, 50%, 25%, 0%. As another example, the display unit 172 is an integrated touch display structure, and the user can directly perform dimming operations on the display unit 172.

[0053] Please refer to Figure 4 , which is a schematic cross-sectional structure diagram of the dimming board of an embodiment of the present application, and is the same as Figure 3The structures are different. In the dimming panel 1 in this example, the first transparent electrode layer 191 and the second transparent electrode layer 192 are arranged on the outer surfaces of the first light-transmitting substrate 181 and the second light-transmitting substrate 182. Between adjacent dimming partitions, such as the first dimming partition 11 and the second dimming partition 12, spacers 100 are respectively arranged on the outer surface of the first light-transmitting substrate 181 and the second light-transmitting substrate 182 for isolating the transparent electrode layers corresponding to the dimming partitions. The first transparent electrode layer 191 and the second transparent electrode layer 192 may also be respectively covered with a first light-transmitting protective layer 193 and a second light-transmitting protective layer 194.

[0054] Please refer to Figure 5 , which is a schematic cross-sectional structure diagram of a dimming panel according to another embodiment of the present application. The main difference from the structure shown in Figure 3 is that the dimming screen in this example further includes a colored light-transmitting layer 195, which covers, coats, or is plated on the outer surface of the first light-transmitting substrate 181, so that each dimming partition can not only change the light transmittance in the electrically controlled state, enabling the white light emitted by the light source to be switched between hard light and soft light through the dimming panel, but also enabling the transmitted white light to be transformed into hard light or soft light with a certain color, or obtaining colored light with varying shades. Of course, in some other examples, the first light-transmitting substrate 181, the second light-transmitting substrate 182, the first light-transmitting protective layer 193, and the second light-transmitting protective layer 194 may also be made of colored light-transmitting materials. Or the dimming layer includes dyes or color-developing materials.

[0055] As an example, the dimming materials of each dimming zone are the same. For example, a liquid crystal polymer film or an electrochromic film is used as the dimming layer. Of course, in other examples, the dimming materials of each dimming zone are different. For example, the first dimming zone 11, the third dimming zone 13, and the fifth dimming zone 15 use a liquid crystal polymer film as the dimming layer, while the second dimming zone 12 and the fourth dimming zone 14 use an electrochromic film. The liquid crystal polymer film realizes dimming based on the principle of Polymer Dispersed Liquid Crystal (PDLC), and the electrochromic film realizes dimming based on the principle of Electrochromic (EC) of conductive polymers. For the dimming zones with the same material dimming layer 800, different driving signals can make each dimming zone exhibit different light transmittance or light transmission characteristics, so that the light emitted by the entire light source shows variable light effects after passing through the dimming board 1. And with different material dimming zones under the same dimming control signal, different light effects can also be presented in each zone. For example, when the lamp uses white light (hard light), when the first dimming zone 11 to the fifth dimming zone 15 all correspond to the minimum light transmittance signal, the light passes through the first dimming zone 11, the third dimming zone 13, and the fifth dimming zone 15 to form a white soft light zone with the maximum softening degree on the photographed object, and the light passes through the second dimming zone 12 and the fourth dimming zone 14 to form a dark zone on the photographed object, such as dark blue, dark green, dark gray or black.

[0056] Please refer to Figure 6 and Figure 7 , Figure 6 which is a schematic structural diagram of the dimming board provided by another embodiment of the present application. Figure 7 is Figure 6 a partial enlarged schematic diagram of the S position in Figure 1Compared with the dimming board 1 of the illustrated embodiment, the dimming board 2 has the same structure as the dimming board 1 in terms of the circuit area 10, multiple dimming zones 11-15, electrode pairs, the spacer 100, and the connection line 101. The main difference is that the control device 27 included in the dimming board 2 is fixed in the circuit area 10; the dimming control device 27 is a wireless dimming control box, which includes a housing 270, a dimming input unit 271, a display unit 272, and a connection line 273. The housing 270, the dimming input unit 271, and the display unit 272 are similar to the housing 170, the dimming input unit 171, and the display unit 172 included in the dimming control device 17, and the connection line 273 is fixedly connected to the connection line 101 in the circuit area 10. In addition to the main control circuit and the driving circuit, the control circuit in the housing 270 further includes a wireless transmission module. The wireless transmission module enables the dimming control device 27 to be wirelessly connected to external operating devices with wireless functions such as mobile phones and consoles. The user inputs a target light effect signal through the physical entity dimming input unit 271 (buttons, knobs, touch screens, etc.) or the virtual operation interface (such as the dimming APP installed on the mobile phone) of the external operating device, and the target light effect signal is then transmitted to the wireless transmission module of the dimming control device 27 through the wireless transmission module of the external operating device. The main control circuit controls a corresponding set of dimming drive signals to be respectively output to the first dimming zone 11 to the fifth dimming zone 15. The control box can be replaced with a simple knob. The knob changes the current, voltage, and resistance values in the access circuit, so that the voltage amplitude applied across the dimming layer changes, thereby changing the light transmittance of the dimming layer.

[0057] Please refer to Figure 8 and Figure 9 , which is a schematic structural diagram of a dimming board of another embodiment. The main difference between the dimming board 3 and the dimming board 2 or 1 is that the negative electrodes of the dimming board 3 can also be connected to form a common negative electrode, while the positive electrodes remain independent. At this time, each positive electrode and the common negative electrode form an electrode pair. Since the positive electrodes are independent of each other, independent drive signals can be provided to each dimming zone 11-15. Specifically, the multiple electrode pairs include multiple positive electrodes 111, 121, 131, 141, 151 and a common negative electrode 22. Each positive electrode and the common negative electrode 22 form one of the electrode pairs. In the dimming zone, a first transparent electrode layer 191 and a second transparent electrode layer 192 are further included. The first transparent electrode layer 191 is fixed on the surface of the first light-transmitting substrate 181, and the second transparent electrode layer 192 is fixed on the surface of the second light-transmitting substrate 182. The second transparent electrode layers 192 in each dimming zone 11-15 are separated from each other by the spacer 100 and are respectively connected to the positive electrodes 111-151, while the first transparent electrode layer 191 is connected to the common negative electrode.

[0058] In one embodiment of the present application, the first light-transmitting substrate 181 and the second light-transmitting substrate 182 may be flexible substrates or rigid light-transmitting substrates. The dimming layer 800 is a flexible film layer.

[0059] Please refer to Figure 10 and Figure 11 , which is a schematic structural diagram of a dimming board according to another embodiment. Compared with the dimming board in the foregoing embodiment, the dimming board 3 in this example further includes a wrapping layer 29 that covers the circuit area 10. The circuit area 10 may further include a waterproof layer (not shown in the figure), and the waterproof layer is a waterproof material in the form of waterproof glue or waterproof strip, which covers the circuit area 10 to protect the connection wires and electrodes in the circuit area. The wrapping layer 29 may cover the edge areas of the light incident surface and the light exit surface of the dimming board 3, and a first mounting member 290 may be further provided on one of the surfaces. Through the first mounting member 290, the dimming board 3 can be conveniently and quickly mounted on a lamp or a fixing frame. The first mounting member 290 includes, but is not limited to, Velcro, magnetic attraction blocks, and threading holes.

[0060] Please refer to Figure 12 , which is a schematic diagram of a photographic lighting system according to an embodiment of the present application. The photographic lighting system 300 includes a light source device 301 and the dimming board 1 (or dimming boards 2, 3) in the foregoing embodiment. The light source device 301 is a surface light source device, such as an LED panel light. The dimming board 1 can be fixed on the ground or suspended in the air through a frame system (not shown in the figure). The light source device 301 can be fixed on the ground or other positions through a bracket device such as a U-stand (not marked). The dimming board 1 is placed in front of the light source device 301. The light emitted by the light source device 301 passes through the dimming board 1 and is projected onto the shooting target, and a target light effect is formed on the shooting target. In another example, the dimming board 1 can be fixed to the light exit surface of the light source device 301 by docking the second mounting member 310 on the light source device 301 and a second connecting portion (not shown in the figure) provided on the dimming board 1. The second mounting member 310 can be various connecting components such as Velcro, magnetic attraction blocks, and threading holes, and it can be docked with the first mounting member 290 on the dimming board to achieve detachable fixation.

[0061] Please refer to Figure 13 , which is a schematic diagram of a photographic lighting system according to another embodiment of the present application. The photographic lighting system 400 includes a light source device 401 and the dimming board 1 in the foregoing embodiment. The light source device 401 is a point light source device. For example, it can be an LED point light source device, and the light source is formed in the form of COB. The dimming board 1 can be embedded in the lamp body and located in front of the light source. The light emitted by the light source device 401 passes through the dimming board 1 and is projected onto the shooting target, and a target light effect is formed on the shooting target.

[0062] Of course, the light source device included in the photographic lighting system may also be other forms of light sources, such as a linear light source device. The light control board 1 in the photographic lighting system 300 and the photographic lighting system 400 may also be replaced with the light control boards 2-3 in the foregoing other embodiments. The photographic lighting system may include a single light control board, or a combination or superposition of multiple light control boards.

[0063] The light control board and the photographic lighting system provided in the present application form a plurality of light control partitions adjacent to each other along the light-transmitting surface of the light control area by a first light-transmitting substrate, a second light-transmitting substrate and a light control layer, and a plurality of electrode pairs in the circuit area are respectively connected to the independently controllable light control layers in each light control partition, so that different drive signals can control the light transmittance of each light control partition, thereby realizing the separate adjustment of the light transmittance of each light control partition, so that the light control board presents a variety of variable target light effects according to the combination of the light transmittances of each light control partition, forming a more abundant desired lighting effect on the shooting target, reducing the frequent replacement and handling of light effect equipment, and thus improving the utilization rate and operation convenience of the light control board as a light effect equipment.

[0064] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A dimming board, characterized in that, Comprising: A dimming area, which includes a first light-transmitting substrate, a second light-transmitting substrate, and a dimming layer, wherein the second light-transmitting substrate is disposed opposite to the first light-transmitting substrate, and the dimming layer is sandwiched between the first light-transmitting substrate and the second light-transmitting substrate; In the thickness direction of the first light-transmitting substrate, the dimming area forms a plurality of dimming partitions arranged adjacent to each other along the light-transmitting surface of the dimming area, and the corresponding dimming layers in each dimming partition are independently controllable; A circuit area, which is disposed on the periphery of the dimming area, and the circuit area is provided with a plurality of electrode pairs, and the plurality of electrode pairs are respectively used to connect to the dimming layers in each dimming partition.

2. The dimming board according to claim 1, wherein The dimming layer in each dimming partition is connected to an independent pair of electrode pairs, and the electrode pair includes a positive electrode and a negative electrode.

3. The dimming board according to claim 2, characterized in that, An isolator is disposed between adjacent dimming partitions, and the isolator is sandwiched between the first light-transmitting substrate and the second light-transmitting substrate and is hermetically connected to the first light-transmitting substrate and the second light-transmitting substrate.

4. The dimming board according to claim 3, characterized in that, The dimming area further includes a first transparent electrode layer fixed on the inner surface of the first light-transmitting substrate and a second transparent electrode layer fixed on the inner surface of the second light-transmitting substrate, and the first transparent electrode layer and the second transparent electrode layer are respectively connected to the positive electrode and the negative electrode, and the first transparent electrode layers in adjacent dimming partitions are separated by the isolator, and the second transparent electrode layers in adjacent dimming partitions are separated by the isolator.

5. The dimming board according to claim 2, wherein The dimming area further includes a first transparent electrode layer fixed on the outer surface of the first light-transmitting substrate and a second transparent electrode layer fixed on the outer surface of the second light-transmitting substrate, and the first transparent electrode layer and the second transparent electrode layer are respectively connected to the positive electrode and the negative electrode, and the first transparent electrode layers in adjacent dimming partitions are separated by an isolator disposed on the outer surface of the first light-transmitting substrate, and the second transparent electrode layers in adjacent dimming partitions are separated by an isolator disposed on the outer surface of the second light-transmitting substrate.

6. The dimming board according to claim 5, characterized in that, The dimming area further includes a first light-transmitting protective layer and a second light-transmitting protective layer, the first light-transmitting protective layer covers the first transparent electrode layer, and the second light-transmitting protective layer covers the second transparent electrode layer.

7. The dimming board according to claim 1, characterized in that, The dimming area further includes a colored light-transmitting layer; or at least one of the first light-transmitting substrate and the second light-transmitting substrate is a colored light-transmitting substrate.

8. The dimming board according to claim 1, wherein The plurality of electrode pairs include a plurality of positive electrodes and a common negative electrode, and each positive electrode and the common negative electrode form an electrode pair.

9. The dimming board according to claim 8, characterized in that, The dimming area further includes a first transparent electrode layer and a second transparent electrode layer, the first transparent electrode layer is fixed on the surface of the first light-transmitting substrate, and the second transparent electrode layer is fixed on the surface of the second light-transmitting substrate; the second transparent electrode layers in each dimming partition are separated from each other by an isolator and are respectively connected to the positive electrode, and the first transparent electrode layer is connected to the common negative electrode.

10. The dimming board according to claim 1, wherein, The first light-transmitting substrate and the second light-transmitting substrate are flexible substrates, and the dimming layer is a flexible film layer; and / or the dimming layer is a liquid crystal polymer film or an electrochromic film.

11. The dimming board according to claim 1, characterized in that, The dimming partition includes a first dimming partition and a second dimming partition adjacent thereto. The dimming layer corresponding to the first dimming partition is a liquid crystal polymer film, and the dimming layer corresponding to the second dimming partition is an electrochromic film.

12. The dimming board according to claim 1, wherein, The circuit region further includes a plurality of connection lines for connecting the electrode pair to a dimming control device, and the dimming control device is a wired or wireless dimming control box.

13. The dimming board according to claim 1, characterized in that, The circuit region further includes a waterproof layer and / or a wrapping layer, and the wrapping layer is provided with a first mounting member.

14. A photographic lighting system, comprising a dimming board and a light source device, characterized in that, The light emitted by the light source device passes through the dimming plate and projects onto the shooting target. The light source device is a point light source emitting device, a line light source emitting device, or a surface light source emitting device, and the dimming plate is the dimming plate according to any one of claims 1 to 13.

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