Partitioned dimming method, dimming screen and photographic lighting system

Abstract

The invention discloses a partitioned dimming method, a dimming screen and a photographic lighting system. The partition dimming method comprises the following steps: acquiring a target lighting effect signal; generating a group of dimming control signals according to the target lighting effect signal; generating a corresponding group of dimming driving signals according to the group of dimming control signals; and respectively applying the group of dimming driving signals to a plurality of different dimming areas of a dimming screen to adjust the light transmittance of each dimming area so as to enable the dimming screen to present the target lighting effect. According to the technical scheme, the utilization rate of lighting effect equipment can be improved, and the convenience of shooting operation is improved.

Description

Technical Field

[0001] The present application belongs to the field of photography and video technology, and specifically relates to a zone dimming method, a dimming screen and a photography lighting system. Background Art

[0002] In the fields of photography, film and television shooting, creative video shooting, stage lighting effects, etc., there are many types of lighting effect equipment involved. In some scenarios, a variety of lighting effect equipment may be needed to complete a shooting job, including but not limited to various types of photographic equipment that can achieve soft light, reflection, specific pattern projection, color change, filter, focusing, and scattered light effects. This makes the shooting site occupied by various equipment, which is also cumbersome to use, and the utilization rate of a single equipment is low. Therefore, it is necessary to provide a lighting effect equipment with higher utilization rate to improve the convenience of user shooting operation. Summary of the invention

[0003] The purpose of this application is to provide a zone dimming method, a dimming screen and a photographic lighting system to improve the utilization rate of lighting equipment and enhance the convenience of shooting operations.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to one aspect of an embodiment of the present application, a zone dimming method of a dimming screen is provided, comprising:

[0006] Obtaining target light effect signal;

[0007] Generate a set of dimming control signals according to the target light effect signal;

[0008] Generate a corresponding set of dimming drive signals according to the set of dimming control signals;

[0009] The set of dimming driving signals is applied to a plurality of different dimming zones of the dimming screen respectively to adjust the transmittance of each dimming zone, so that the dimming screen presents the target light effect.

[0010] In one embodiment of the present application, the dimming driving signal is a voltage signal, and the group of dimming driving signals includes a voltage signal that changes continuously or in steps.

[0011] In one embodiment of the present application, the dimming control signal includes a transmittance signal.

[0012] In one embodiment of the present application, the group of dimming control signals includes a first dimming control signal and a second dimming control signal, the first dimming control signal is a highest transmittance signal, and the second dimming control signal is a lowest transmittance signal, and generating a corresponding group of dimming drive signals according to the group of dimming control signals specifically includes: generating a maximum amplitude drive signal and a minimum amplitude drive signal according to the first dimming control signal and the second dimming control signal, respectively.

[0013] In one embodiment of the present application, the target light effect signal includes light effect mode information or dimming zone-transmittance correspondence information.

[0014] In one embodiment of the present application, generating a set of dimming control signals according to the target light effect signal specifically includes: generating a set of periodically changing dimming control signals according to the target light effect signal.

[0015] According to another aspect of an embodiment of the present application, a dimming screen is provided, comprising:

[0016] A plurality of dimming zones, each of the dimming zones comprising an independently controllable dimming layer;

[0017] A circuit area is provided with a plurality of electrode pairs, wherein the plurality of electrode pairs are used to connect the dimming layers of the plurality of dimming areas and a control circuit, wherein the control circuit is used to:

[0018] Obtaining target light effect signal;

[0019] Generate a set of dimming control signals according to the target light effect signal;

[0020] Generate a corresponding set of dimming drive signals according to the set of dimming control signals;

[0021] The set of dimming driving signals is applied to the multiple different dimming zones respectively to adjust the transmittance of each dimming zone, so that the dimming screen presents the target light effect.

[0022] In one embodiment of the present application, the dimming layer is a liquid crystal polymer film or an electrochromic film.

[0023] In one embodiment of the present application, the dimming layer includes a variable color dimming layer.

[0024] In one embodiment of the present application, the plurality of dimming zones are in a rectangular longitudinal / lateral distribution, a concentric radial distribution, a concentric nested distribution, or a matrix distribution.

[0025] According to one aspect of the present application, a photographic lighting system is provided, comprising a light source device and a dimming screen, wherein the light emitted by the light source device passes through the dimming screen and is projected onto a photographed target, the dimming screen comprises a circuit area and a plurality of dimming areas, each of the dimming areas comprises an independently controllable dimming layer, the circuit area is provided with a plurality of electrode pairs, the plurality of electrode pairs are used to connect the dimming layers of the plurality of dimming areas and a control circuit, and the control circuit is used to:

[0026] Obtaining target light effect signal;

[0027] Generate a set of dimming control signals according to the target light effect signal;

[0028] Generate a corresponding set of dimming drive signals according to the set of dimming control signals;

[0029] The set of dimming driving signals is applied to the multiple different dimming zones respectively to adjust the transmittance of each dimming zone, so that the dimming screen presents the target light effect.

[0030] In one embodiment of the present application, the light source device is a point light source light emitting device.

[0031] In one embodiment of the present application, the light source device is a linear light source lighting device.

[0032] In one embodiment of the present application, the light source device is a surface light source lighting device.

[0033] In one embodiment of the present application, the target light effect signal is sent to the dimming screen through the light source device.

[0034] In one embodiment of the present application, the light source device adjusts the luminous intensity of the light source device according to the target light effect signal, or the dimming screen adjusts the target light effect signal according to the luminous intensity of the light source device.

[0035] According to another aspect of an embodiment of the present application, an electronic device is provided, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor executes the executable instructions so that the electronic device performs the zone dimming method as in the above technical solution.

[0036] According to another aspect of the embodiments of the present application, a computer program product or a computer program is provided, the computer program product or the computer program including computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the partition dimming method in the above technical solution.

[0037] In the technical solution provided in the embodiment of the present application, after obtaining the target light effect signal, a group of dimming control signals are generated according to the target light effect signal, and then a corresponding group of dimming drive signals are generated from the dimming control signal to drive multiple different dimming zones of the dimming screen, thereby realizing separate adjustment of the transmittance of each dimming zone, and realizing zone dimming of the entire dimming screen, so that the dimming screen presents the required target light effect according to the transmittance combination of each dimming zone, and the light effect can be changed quickly and conveniently by changing the target light effect signal, so that the dimming screen and the photographic lighting system using the zone dimming method can efficiently utilize the adjustable light effect function of the dimming screen, form a desired richer lighting effect on the shooting target, reduce the frequent replacement and transportation of light effect equipment, thereby improving the utilization rate of light effect equipment and the convenience of operation.

[0038] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work;

[0040] Figure 1 The flowchart of the zone dimming method provided by one embodiment of the present application is schematically shown;

[0041] Figure 2 The structure diagram of a dimming screen provided by an embodiment of the present application is schematically shown;

[0042] Figure 3 The structure diagram of a control device for a dimming screen provided by an embodiment of the present application is schematically shown;

[0043] Figure 4 A schematic structural diagram of a dimming screen provided by another embodiment of the present application;

[0044] Figure 5 yes Figure 4 The local enlarged schematic diagram of the dimming screen corresponding to S is shown;

[0045] Figure 6 A control circuit block diagram of a dimming control device provided by an embodiment of the present application is schematically shown;

[0046] Figure 7 A schematic diagram schematically shows a dimming driving signal of a dimming method according to an embodiment of the present application;

[0047] Figure 8 The following schematically shows a partition diagram of a partition dimming method provided by an embodiment of the present application;

[0048] Fig. 9 A schematic diagram of a partitioning method of a partition dimming method provided in another embodiment of the present application is schematically shown;

[0049] Fig.10 A schematic diagram of a partitioning method of a partition dimming method provided in another embodiment of the present application is schematically shown;

[0050] Fig.11 A schematic diagram of a photographic lighting system according to an embodiment of the present application is schematically shown;

[0051] Fig.12 A schematic diagram schematically shows a photographic lighting system according to another embodiment of the present application;

[0052] Fig.13 The structure block diagram of a computer system for implementing an electronic device according to an embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0053] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0054] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0055] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0056] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0057] In the embodiments of the present application, the term "module" or "unit" refers to a computer program or a part of a computer program with a predetermined function, and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories) or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit.

[0058] The partition dimming method provided by the present application is described in detail below in conjunction with specific implementations.

[0059] Please see Figure 1 , a flow chart of a zone dimming method provided by an embodiment of the present application. The dimming method of the present application includes the following steps S01 to S04.

[0060] Step S01: obtaining a target light effect signal;

[0061] Step S02: generating a set of dimming control signals according to the target light effect signal;

[0062] Step S03: generating a corresponding set of dimming driving signals according to the set of dimming control signals;

[0063] Step S04: applying the set of dimming driving signals to a plurality of different dimming zones of the dimming screen respectively to adjust the transmittance of each dimming zone, so that the dimming screen presents the target light effect.

[0064] In order to further describe the above method, Figures 2-3 An exemplary introduction is given to a dimming screen using the above-mentioned zone dimming method.

[0065] The dimming screen 1 of one embodiment of the present application includes a circuit area 10 and multiple dimming areas, and the multiple dimming areas include a first dimming area 11, a second dimming area 12, a third dimming area 13, a fourth dimming area 14 and a fifth dimming area 15. The multiple dimming areas can be relatively independently regulated. Specifically, electrode pairs corresponding to each dimming area are provided in the circuit area 10, and each pair of electrode pairs includes a positive electrode and a negative electrode, which are used to be connected to a driving circuit to apply a driving signal to the dimming area, so that the dimming layer in the dimming area presents a corresponding light-transmitting state. Specifically, as an example, the circuit area 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, wherein the first positive electrode 111 and the first negative electrode 112 constitute a first electrode pair for applying a driving signal to the first dimming zone 11, the second positive electrode 121 and the second negative electrode 122 constitute a second electrode pair for applying a driving signal to the second dimming zone 12, and so on, which are not listed one by one.

[0066] An isolator 100 may be provided between adjacent dimming zones, and the isolator 100 may isolate the driving signals of other dimming zones adjacent to the dimming zone to ensure that the dimming zone can be controlled individually, thereby realizing the zone dimming of the dimming screen 1. The isolator may be a transparent adhesive material such as EVA glue, PVB glue, etc. The circuit area 10 may also include a set of wirings 101 for connecting each electrode pair to the dimming control device 17. The circuit area 10 and each dimming zone may share a substrate or use different substrates. In some other embodiments, each negative electrode may also be connected to form a common electrode, while each positive electrode remains independent, in which case each positive electrode forms an electrode pair with a common negative electrode, or vice versa.

[0067] As an example, the wiring 101 can be connected to the dimming control device 17 through the cable 16 with an interface. The dimming control device can be a control device in the form of a control box, a console, a control box, 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 in the housing, mainly including a main control circuit and a drive circuit. Among them, the user can adjust or select the target light effect through the dimming input unit 171, and 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 drive signals according to the set of dimming control signals and outputs them to the drive circuit. The drive circuit outputs each dimming drive signal to the corresponding dimming area through the wiring and electrode pairs of the line area 10. The dimming layer in the dimming zone can have different transmittances under the drive of different driving signals, thereby realizing the zone dimming of the dimming screen 1. Each dimming zone forms a target light effect with its own transmittance state. When the user needs a different light effect, the dimming input unit 171 can be used to change, adjust, and select different target light effects to obtain the light effect required for the current scene conveniently and quickly, without having to move the dimming screen 1 and replace another light effect device in front of the lamp. Therefore, the utilization rate of the dimming screen 1 is also improved accordingly. It should be understood that the control circuit generally also includes a storage unit for storing various signals and data, which will not be described in detail here.

[0068] It should be understood that although the present application mainly describes the inconsistency of dimming control signals or dimming drive signals in dimming zones, the use of consistent dimming control signals or dimming drive signals in various dimming zones also belongs to an embodiment of the present application. In the case where different dimming zones have the same dimming control signal or dimming drive signal, as an example, the dimming layer materials in the dimming zones are the same, and a uniform light effect surface with a larger area than that of a single dimming zone can be obtained; as another example, the dimming materials of the dimming zones are different, such as 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 conductive polymer electrochromic (EC). By combining dimming zones of different materials under the same dimming control signal, different lighting effects can be presented in each zone. For example, the lamp uses white light (hard light). When the first dimming zone 11 to the fifth dimming zone 15 all correspond to the minimum 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 area on the photographed object, such as dark blue, dark green, dark gray or black.

[0069] As an example of the present application, the dimming control device 17 can be directly connected to the circuit and electrode of the dimming screen 1 through an interface cable, or can be connected through an adapter cable 160 to achieve long-distance remote control. As another example, the driving circuit can also be set in the circuit area 10 of the dimming screen 1. The dimming input unit 171 can be an input component implemented in various ways such as a button, a knob, a dial, a joystick, a touch screen, etc., and the present application is not limited thereto. The display unit 272 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 272 can also display the dimming zone-transmittance corresponding information, for example, the number of each dimming zone and the corresponding dimming control signal (dimming rate) are displayed correspondingly, for example, the first dimming zone 11 to the fifth dimming zone 15 correspond to the normalized transmittance information of 100%, 75%, 50%, 25%, and 0%, respectively. As another example, the display unit 272 is a touch-display integrated structure, and the user can directly perform dimming operations on the display unit 272 .

[0070] Please see Figure 4 and Figure 5 , Figure 4 is a structural schematic diagram of a dimming screen provided by another embodiment of the present application, Figure 5 for Figure 4 A local enlarged schematic diagram of the S in the figure. Figure 2 Compared with the dimming screen 1 of the illustrated embodiment, the dimming screen 2 has the same structure as the dimming screen 1 in terms of the arrangement of the circuit area 10, the plurality of dimming areas 11 to 15, the electrode pairs, the isolating member 100, and the wiring 101. The main difference is that the control device 27 included in the dimming screen 2 is fixed to the circuit area 10, and the dimming control device 27 includes a housing 270, a dimming input unit 271, a display unit 272, and a connecting 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 connecting line 273 is fixedly connected to the wiring 101 of the circuit area 10.

[0071] Please see Figure 6 , is a control circuit block diagram of a dimming control device provided by an embodiment of the present application. The control circuit located in the housing 270 includes a wireless transmission module 284 in addition to a main control circuit 280 and a drive circuit 283. Specifically, the control circuit includes a dimming input circuit 281, which is used to convert a physical operation signal generated by a user through the dimming input unit 271 into a target light effect signal in the form of an electrical signal; a display circuit 282, which is used to convert the target light effect signal and the like into information in a visible form and present it on the display unit 272. The wireless transmission module 234 is connected to the main control circuit 280, and is wirelessly connected to an external operating device with a wireless function such as a mobile phone and a console through the wireless transmission module 234. The user inputs the target light effect signal through the physical entity dimming input unit 271 (buttons, knobs, touch screen, etc.) of the external operating device or the virtual operating interface (such as the dimming APP installed on the mobile phone), and the target light effect signal is then transmitted to the wireless transmission module 284 of the control device 27 through the wireless transmission module of the external operating device. The wireless transmission module 284 transmits the target light effect signal to the main control circuit 280. The main control circuit 280 generates a corresponding set of dimming control signals according to the target light effect signal and outputs them to the drive circuit 283. The drive circuit 283 generates a corresponding set of dimming drive signals according to the set of dimming control signals and outputs them to the first dimming zone 11 to the fifth dimming zone 15 respectively.

[0072] In an embodiment of the present application, a group of dimming control signals generated according to the target light effect signal includes at least two dimming control signals, and the dimming control signals may be transmittance signals. For example, the first dimming control signal is the highest transmittance, and the second dimming control signal is the lowest transmittance; for another example, the first dimming control signal is 50% transmittance, and the second dimming control signal is 20% transmittance, and so on.

[0073] The transmittance signal can be a normalized transmittance, not the actual transmittance of the dimming screen. Due to the materials used in the dimming layer, the transmittance of the translucent screen cannot actually reach 100% or 0%, but is in the percentage range of (0%, 100%), for example, it may be in the range of 5% to 95%. Then, the 5% transmittance is defined as the minimum transmittance, corresponding to the normalized 0% transmittance signal, that is, the minimum transmittance signal, and the 95% transmittance is defined as the maximum transmittance, corresponding to the normalized 100% transmittance signal, that is, the maximum transmittance signal.

[0074] In some embodiments of the present application, the dimming driving signal is a voltage signal, and the set of dimming driving signals includes a voltage signal that changes continuously or in steps. Figure 7 , which schematically shows a schematic diagram of a dimming drive signal of a dimming method of an embodiment of the present application. Wherein V1 indicates that the generated dimming drive signal is a stepless dimming drive signal, and V2 indicates that the generated dimming drive signal is a step dimming signal, taking the second order and third gear as an example. Correspondingly, when the dimming control signal is a minimum transmittance signal, the corresponding generated dimming drive signal is a minimum amplitude voltage, such as 0 volts in the driving waveform V1 or a low level L in the driving waveform V2; when the dimming control signal is a maximum transmittance signal, the corresponding generated dimming drive signal is a maximum amplitude voltage, such as 24 volts in the driving waveform V1 or a low level H in the driving waveform V2. Wherein, the maximum amplitude voltage is the maximum operating voltage supported by the dimming screen 1, and the minimum amplitude voltage can be the minimum operating voltage supported by the dimming screen 1 when it is powered on or the power-off voltage (i.e., 0 volts). When the dimming control signal is between zero and 100%, the amplitude of the dimming drive signal is also between the minimum amplitude and the maximum amplitude, such as the amplitude of the drive waveform V1 that is less than 24 volts and greater than 0 volts, or the middle level M in the drive waveform V2. Under the minimum amplitude voltage or in the power-off state, the dimming screen presents its minimum drive voltage or the minimum transmittance state in the natural state without power; when the maximum amplitude voltage is applied, it presents the "full transmittance" state with the highest transmittance it can achieve; in between the two, it presents a transmittance state that is darker than full transmittance but brighter than when no voltage is applied.

[0075] It should be understood that the various numerical values ​​in the aforementioned embodiments are only examples. For example, the maximum amplitude voltage can be 24 volts, 48 ​​volts, 64 volts, 110 volts, 5 volts, 12 volts, and other amplitudes; the step dimming is not limited to the second order and three gears, but can also be the first order and two gears, or higher than 3 gears. As other examples, the actual transmittance that can be presented by the dimming layer under the minimum amplitude voltage and the maximum amplitude voltage can be (50%, 96%), that is, when the dimming control signal is the minimum transmittance signal, the corresponding dimming area actually presents a 50% transmittance. Of course, this minimum transmittance can be higher, up to more than 80%. It should be understood that the voltage signal described in the present application also includes adjusting the current signal to change the voltage between the electrode pairs, which can specifically include a direct current signal or an alternating current signal.

[0076] As an example, the material of the dimming layer may be a liquid crystal polymer film; as another example, the material of the dimming layer may be an electrochromic film. When driven by a driving signal of minimum amplitude (close to the power-off state), a liquid crystal polymer film is used as the dimming area of ​​the dimming layer, and the liquid crystal molecules in the liquid crystal polymer film are in a free and disorderly arrangement state, so that light is scattered after passing through the free and disorderly liquid crystal molecules, presenting a matte light-transmitting state. The hard light generated by the lamp can obtain soft light after passing through the dimming area. When the dimming driving signal is gradually increased, the liquid crystal molecules gradually turn into an orderly arrangement, so that the transmittance increases, the dimming area presents a state close to transparent, and the hard light generated by the lamp is directly projected onto the photographed object. When the dimming layer is an electrochromic film, it gradually switches from a dark and low transmittance state to a light / transparent high transmittance state as the dimming driving signal increases.

[0077] As an example of the present application, the dimming control signal may be a signal that changes periodically. For example, when a user selects a target light effect similar to a dynamic change mode, the dimming control signal generated according to the target light effect signal is a signal that changes periodically and automatically over time. Correspondingly, the dimming drive signal generated according to the dimming control signal also changes periodically accordingly. The period mentioned here may be a single fixed period or a combination of multiple different periods.

[0078] Please see Figure 8 , which schematically shows a partition diagram of a partition dimming method provided by an embodiment of the present application. For reference, Figure 2 The five partitions of the dimming screen are rectangular and arranged side by side vertically. Figure 2 Based on the distribution shown, the arrangement direction can also be changed to a horizontal side-by-side distribution. Figure 8In the dimming zone zoning schematic diagram shown, the multiple dimming zones of the dimming screen 3 specifically include a first dimming zone 21, a second dimming zone 22, a second dimming zone 23, a fourth dimming zone 24, a fifth dimming zone 25, a sixth dimming zone 26, a seventh dimming zone 27 and an eighth dimming zone 28. The eight dimming zones are arranged concentrically and radially. As an example, the target light effect signal is a hard light and soft light half mode, and a group of dimming control signals generated according to the target light effect signal includes at least a first dimming control signal and a second dimming control signal, wherein the first dimming control signal is a highest transmittance signal, and the second dimming control signal is a lowest transmittance signal, and a maximum amplitude driving signal and a minimum amplitude driving signal are generated according to the first dimming control signal and the second dimming control signal, respectively, wherein the first dimming control signal is used to control the first dimming zone 21, the second dimming zone 22, the second dimming zone 23 and the fourth dimming zone 24, and the second dimming control signal is used to control the fifth dimming zone 25, the sixth dimming zone 26, the seventh dimming zone 27 and the eighth dimming zone 28. In this way, the right semicircle of the dimming screen can obtain the display state of maximum light transmittance when driven by the maximum amplitude driving signal, for example, the hard light generated by the lamp can be directly transmitted, while the left semicircle can obtain the soft light effect when driven by the minimum amplitude driving signal, so that the visual effect of hard light and soft light contrast can be formed on the surface of the photographed object, and at this time, there is no need to move the lamp or the position of the dimming screen, so that the photographer can easily obtain more personalized creative shooting. Of course, more light effects can be obtained by using zone dimming, but due to limited space, only a few examples are used to illustrate.

[0079] Please see Fig. 9 , which schematically shows a partition diagram of a partition dimming method provided by another embodiment of the present application. Figure 8Compared with the dimming screen partitions shown in FIG. 1 , the first dimming zone 31, the second dimming zone 32, the third dimming zone 33 and the fourth dimming zone 34 of the dimming screen 4 in this example are concentrically nested. Except for the first dimming zone 31 which is circular, the other three dimming zones are annular. In this example, the dimming layers of the first dimming zone 31, the second dimming zone 32, the third dimming zone 33 and the fourth dimming zone 34 can also be variable color dimming layers, which present a dark color with the lowest transmittance under the minimum amplitude driving signal, such as blue, red, black, purple, etc., and present an approximately transparent state (maximum transmittance) under the maximum amplitude driving signal. When between the maximum and minimum amplitude driving signals, it presents a light color with an intermediate transmittance. As an example, the amplitude of the dimming drive signal corresponding to the first dimming zone 31, the second dimming zone 32, the third dimming zone 33 and the fourth dimming zone 34 can be gradually increased or decreased to present a gradient color light effect, providing a richer layer of visual light effect. Of course, the four zones can also use dimming drive signals of the same amplitude to obtain color filter light effects. It should be understood that the dimming layer can be a single-layer structure or a composite film structure of a transmittance adjustment layer and a color filter layer. Multiple dimming zones 31-34 can also be nested distributions of different colors or the same color with different shades.

[0080] Please see Fig.10 , which schematically shows a partition diagram of a partition dimming method provided by another embodiment of the present application. Figure 8 Compared with the dimming screen partitions shown in FIG. 1 , the multiple dimming zones A to Q of the dimming screen 5 in this example are arranged in a matrix. The multiple dimming zones arranged in a matrix can present more types of target light effects such as diagonal gradient, center gradient, checkerboard, diagonal cut, striped pattern, etc., further meeting the user's needs for light and shadow visual effects and personalized creation, and there is no need to move equipment and lamps throughout the process, which greatly simplifies the operation.

[0081] Please see Fig.11 , is a schematic diagram of a photographic lighting system of an embodiment of the present application. The photographic lighting system 300 includes a light source device 301 and a dimming screen 1 of the aforementioned embodiment. The light source device 301 is a surface light source device, such as an LED panel light. The dimming screen 1 can be fixed to the ground or suspended in mid-air through a frame system (not shown in the figure). The light source device 301 can be fixed to the ground or other positions through a bracket device such as a U frame (not marked). The dimming screen 1 is placed in front of the light source device 301. The light emitted by the light source device 301 passes through the dimming screen 1 and is projected onto the shooting target, and forms a target light effect on the shooting target. In another example, the dimming screen 1 can be fixed to the light-emitting surface of the light source device 301 by docking the first connecting portion 310 on the light source device 301 and the second connecting portion (not shown in the figure) provided on the dimming screen 1. The first connecting portion 310 can be various connecting components such as Velcro, a magnetic block, and a rope threading hole.

[0082] Please see Fig.12 , 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 a dimming screen 1 according to the aforementioned 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 a COB form. The dimming screen 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 screen 1 and is projected onto the shooting target, and forms a target light effect on the shooting target.

[0083] Of course, the light source device included in the photographic lighting system can also be other forms of light sources, such as a linear light source device. The dimming screen 1 in the photographic lighting system 300 and the photographic lighting system 400 can also be replaced by the dimming screens 2 to 5 in the aforementioned other embodiments. The photographic lighting system can include a single dimming screen, or a combination or superposition of multiple dimming screens.

[0084] In another embodiment, the photographic lighting system 300 adjusts the luminous intensity of the light source device 301 according to the target light effect signal, or adjusts the target light effect signal according to the luminous intensity of the light source device 301. As an example, the dimming control device 17 can be integrated into the light source device 301, and the light source device 301 has an interface for the interface at the end of the dimming screen 1 cable 16 to be connected to the light source device 301, and a luminous intensity signal detection / feedback circuit can be further added to the dimming control device 17, so that the dimming control device 17 can adjust the transmittance of the dimming screen 1 according to the luminous intensity signal of the light source device. In another embodiment, a dimming screen state feedback circuit can be further added to the dimming control device 17 to feed back the current transmittance information of the dimming screen 1 to the light source device, and the light source device can adaptively adjust the luminous intensity according to the current transmittance of the dimming screen. In this way, a linkage effect can be generated between the light source device and the dimming screen 1, which improves the intelligence of the use of the photographic lighting system and further assists the personalized creation of photographic creators. As an example, when the dimming screen 1 is in the maximum transmittance state, the luminous intensity of the light source device 301 is W1, and the light passing through the dimming screen 1 is hard light; when it is detected that the dimming screen 1 is in the minimum transmittance state, the light passing through the dimming screen 1 is soft light. At this time, the light source device 301 automatically increases the luminous intensity to W2, wherein W2 is greater than W1. Therefore, when switching between hard light and soft light on the shooting target, a part of the light loss caused by the softening processing can be automatically compensated.

[0085] Fig.13 The structure block diagram of a computer system for implementing an electronic device according to an embodiment of the present application is schematically shown.

[0086] It should be noted that Fig.13 The computer system 900 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0087] like Fig.13 As shown, the computer system 900 includes a central processing unit 901 (CPU), which can perform various appropriate actions and processes according to the program stored in the read-only memory 902 (ROM) or the program loaded from the storage part 908 to the random access memory 903 (RAM). Various programs and data required for system operation are also stored in the random access memory 903. The central processing unit 901, the read-only memory 902 and the random access memory 903 are connected to each other through a bus 904. An input / output interface 905 (Input / Output interface, i.e., I / O interface) is also connected to the bus 904.

[0088] The following components are connected to the input / output interface 905: an input section 906 including a keyboard, a mouse, etc.; an output section 907 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 908 including a hard disk, etc.; and a communication section 909 including a network interface card such as a LAN card, a modem, etc. The communication section 909 performs communication processing via a network such as the Internet. A drive 910 is also connected to the input / output interface 905 as needed. A removable medium 911, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 910 as needed so that a computer program read therefrom is installed into the storage section 908 as needed.

[0089] In particular, according to an embodiment of the present application, the process described in each method flow chart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer readable medium, and the computer program contains a program code for executing the method shown in the flow chart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 909, and / or installed from the removable medium 911. When the computer program is executed by the central processor 901, various functions defined in the system of the present application are executed.

[0090] It should be noted that the computer-readable medium shown in the embodiment of the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer readable signal media may also be any computer readable medium other than computer readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer readable medium may be transmitted using any suitable medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0091] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0092] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0093] Through the description of the above implementation methods, it is easy for those skilled in the art to understand that the example implementation methods described here can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the implementation methods of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the implementation methods of the present application.

[0094] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

[0095] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A zone dimming method for adjusting the light transmittance of a dimming screen to produce a target light effect, characterized in that: include: Obtaining target light effect signal; Generate a set of dimming control signals according to the target light effect signal; Generate a corresponding set of dimming drive signals according to the set of dimming control signals; The set of dimming driving signals is applied to a plurality of different dimming zones of the dimming screen respectively to adjust the transmittance of each dimming zone, so that the dimming screen presents the target light effect.

2. The zone dimming method according to claim 1, characterized in that: The dimming driving signal is a voltage signal, and the group of dimming driving signals includes a voltage signal that changes continuously or in steps.

3. The zone dimming method according to claim 2, characterized in that: The dimming control signal includes a transmittance signal.

4. The zone dimming method according to claim 3, characterized in that: The group of dimming control signals includes a first dimming control signal and a second dimming control signal, the first dimming control signal is a highest transmittance signal, and the second dimming control signal is a lowest transmittance signal. Generating a corresponding group of dimming drive signals according to the group of dimming control signals specifically includes: generating a maximum amplitude drive signal and a minimum amplitude drive signal according to the first dimming control signal and the second dimming control signal respectively.

5. The zone dimming method according to claim 1, characterized in that: The target light effect signal includes light effect mode information or dimming zone-transmittance correspondence information.

6. The zone dimming method according to claim 5, characterized in that: Generating a set of dimming control signals according to the target light effect signal specifically includes: generating a set of periodically changing dimming control signals according to the target light effect signal.

7. A dimming screen, characterized in that: include: A plurality of dimming zones, each of the dimming zones comprising an independently controllable dimming layer; A circuit area is provided with a plurality of electrode pairs, wherein the plurality of electrode pairs are used to connect the dimming layers of the plurality of dimming areas and a control circuit, wherein the control circuit is used to: The multiple dimming zones are dimmed according to the zone dimming method according to any one of claims 1 to 6.

8. The dimming screen according to claim 7, characterized in that: The dimming layer is a liquid crystal polymer film or an electrochromic film.

9. The dimming screen according to claim 7, characterized in that: The dimming layer includes a variable color dimming layer.

10. The dimming screen according to claim 7, characterized in that: The plurality of dimming zones are distributed in a rectangular longitudinal / lateral manner, in a concentric radial manner, in a concentric nested manner, or in a matrix manner.

11. A photographic lighting system, characterized in that: include: A light source device and a dimming screen, wherein the light emitted by the light source device passes through the dimming screen and is projected onto a shooting target, and the dimming screen is the dimming screen described in any one of claims 7-10.

12. The photographic lighting system according to claim 11, characterized in that: The light source device is a point light source light-emitting device, a line light source light-emitting device or a surface light source light-emitting device.

13. The photographic lighting system according to claim 11, characterized in that: The target light effect signal received by the dimming screen is sent to the dimming screen through the light source device.

14. The photographic lighting system according to claim 11, characterized in that: The light source device adjusts the luminous intensity according to the target light effect signal, or the dimming screen adjusts the target light effect signal according to the luminous intensity of the light source device.

15. An electronic device, characterized in that: include: processor; as well as A memory, configured to store executable instructions of the processor; The processor executes the executable instructions so that the electronic device executes the zone dimming method described in any one of claims 1-6.

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