Electronic pattern sheet and pattern projection device

Abstract

The utility model relates to an electronic pattern sheet and a pattern projection device, and belongs to the technical field of photographic equipment, the electronic pattern sheet comprises an electric control dimming area, a wiring area and a power-on interface, the electric control dimming area at least comprises a first light-transmitting subarea and a second light-transmitting subarea, the first light-transmitting subarea and the second light-transmitting subarea have different light transmittances under the driving of a driving signal, so that visible light emitted from a photographic lamp passes through the first light-transmitting subarea and the second light-transmitting subarea to form a pattern with light and shade contrast; the wiring area is arranged on the periphery of the electric control dimming area, the wiring area is provided with a connecting line, and the connecting line is used for transmitting the driving signal to the electric control dimming area; and the power-on interface is connected with the connecting line and the control device. The electronic pattern sheet and the pattern projection device are convenient to operate and richer in projection lighting effect.

Description

Technical Field

[0001] This application belongs to the technical field of photography and videography, and particularly relates to an electronic pattern sheet and a pattern projection device. Background Art

[0002] In the fields of photography, filming of movies, TV dramas, creative videos, magazine hardcover shooting, stage lighting effects, etc., a wide variety of lighting equipment is usually required. For example, in some shooting scenarios, it is necessary to simulate some lighting effects within the shooting object or the shooting field of view. For example, in an indoor studio, simulate the light effect of light passing through a window or leaves and then shining on an object, or project information such as icons and logos on the background. Currently, on the market, it is usually by adding a pattern sheet with a fixed pattern (also called a slide, gobo sheet) to the light-emitting part of a photographic lamp. The light emitted by the lamp forms a corresponding light effect projection after passing through the pattern sheet and irradiates the shooting object or the background board. However, the pattern carried by the pattern sheet is single and fixed, and cannot change. When it is necessary to change the projection light effect, the previous pattern sheet needs to be removed and replaced with another pattern sheet. But this will make the entire shooting process cumbersome and the convenience of using the equipment is poor. Moreover, because there are a variety of requirements for the shooting object and the scene light effect by the photographer, it is necessary to purchase a complete set of pattern sheets from the photographic lamp manufacturer. When going out for shooting and carrying a set of dozens or hundreds of pattern sheets, it will cause inconvenience in carrying. Utility Model Content

[0003] The purpose of the present utility model is to provide an electronic pattern sheet and a pattern projection device to solve the technical problem of the single light effect and inconvenient use of the pattern sheet in the prior art.

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

[0005] According to one aspect of an embodiment of the present application, an electronic pattern sheet is provided, which includes an electronically controlled dimming area, a wiring area, and a power connection interface. The electronically controlled dimming area at least includes a first light-transmitting partition and a second light-transmitting partition. The first light-transmitting partition and the second light-transmitting partition have different light transmittances under the drive of a drive signal, so that the visible light emitted from a photographic lamp forms a pattern with a light and dark contrast after passing through the first light-transmitting partition and the second light-transmitting partition; the wiring area is arranged on the periphery of the electronically controlled dimming area, and a connecting wire is arranged in the wiring area. The connecting wire is used to transmit the drive signal to the electronically controlled dimming area; the power connection interface connects the connecting wire and a control device.

[0006] In an example of the present application, at least one of the first light-transmitting partition and the second light-transmitting partition includes an electrochromic film.

[0007] In an example of the present application, the first light-transmitting partition contains an electrochromic film, the second light-transmitting partition does not include an electrochromic film, and the second light-transmitting partition is formed of an opaque or light-transmitting substrate.

[0008] In an example of the present application, both the first light-transmitting partition and the second light-transmitting partition include an electrochromic film, and the electrochromic films in the first light-transmitting partition and the second light-transmitting partition have different light-transmitting bands.

[0009] In an example of the present application, the first light-transmitting partition and the second light-transmitting partition respectively include a plurality of different independent dimming units, and each independent dimming unit contains an electrochromic film.

[0010] In an example of the present application, a plurality of independent dimming units are arranged in sequence longitudinally / horizontally, distributed in a concentric radial pattern, distributed in a concentric nested pattern, or distributed in a matrix pattern.

[0011] In an example of the present application, a common integral light-transmitting substrate covers the electrochromic films corresponding to the plurality of independent dimming units.

[0012] In an example of the present application, the first light-transmitting partition and the second light-transmitting partition respectively include one or more independent dimming units, each independent dimming unit contains an electrochromic film, a partially light-transmitting substrate covers the electrochromic films corresponding to the plurality of independent dimming units, and a plurality of dispersed light-transmitting patterns are formed on the substrate, and the plurality of light-transmitting patterns respectively correspond to the independent dimming units.

[0013] According to another aspect of the embodiments of the present application, a pattern projection device is provided, which includes a photographic lamp and an electronic pattern sheet. The photographic lamp is used to emit visible light, and the electronic pattern sheet is disposed on the visible light propagation path. The electronic pattern sheet includes an electronically controlled dimming area, a wiring area, and a power connection interface. The electronically controlled dimming area at least includes a first light-transmitting partition and a second light-transmitting partition. The first light-transmitting partition and the second light-transmitting partition have different light transmittances under the drive of a drive signal, so that the visible light emitted from the photographic lamp forms a pattern with light and dark contrast after passing through the first light-transmitting partition and the second light-transmitting partition; the wiring area is disposed on the periphery of the electronically controlled dimming area, and connection lines are provided in the wiring area, and the connection lines are used to transmit the drive signal to the electronically controlled dimming area; the power connection interface connects the connection lines and a control device.

[0014] In an example of the present application, it further includes a lens barrel, the lens barrel is mounted on the photographic lamp through a connection unit, and the electronic pattern sheet is located between the light-emitting end of the photographic lamp and the light-incident end of the lens barrel.

[0015] The electronic pattern sheet and the pattern projection device provided by the present application form at least two light-transmitting partitions in the electrically controlled dimming area of the electronic pattern sheet, and transmit the driving signal to the electrically controlled dimming area through the connection line in the peripheral wiring area, so that the electrically controlled dimming area has different light transmittances in two different light-transmitting partitions under the drive of the driving signal, so that the visible light emitted from the photographic lamp forms a pattern with light and dark contrast after passing through the two different light-transmitting partitions, namely the first light-transmitting partition and the second light-transmitting partition. And by connecting the connection line and the control device through the power-on interface, the driving signal can be converted and sent from the control device to the electronic pattern sheet, which is convenient for the user to switch the projection pattern. Thus, the switching of multiple projection patterns can be realized through one electronic pattern sheet, the operation is convenient, and the projection light effect is richer. Description of the Drawings

[0016] Figure 1 Schematically shows the structural diagram of a pattern projection device provided by an embodiment of the present application in a certain state.

[0017] Figure 2 Schematically shows the structural diagram of a pattern projection device provided by an embodiment of the present application in another state.

[0018] Figure 3 Schematically shows the structural diagram of the control device connected to the electronic pattern sheet provided by an embodiment of the present application

[0019] Figure 4 Schematically shows the structural diagram of the electronic pattern sheet provided by an embodiment of the present application.

[0020] Figure 5 Schematically shows the schematic diagram of the electronic pattern sheet provided by another embodiment of the present application in the first state.

[0021] Figure 6 Schematically shows the schematic diagram of the electronic pattern sheet provided by another embodiment of the present application in the second state.

[0022] Figure 7 Schematically shows the schematic diagram of the electronic pattern sheet provided by another embodiment of the present application in the third state.

[0023] Figures 8 to 11 Schematically shows the schematic diagrams of the electronic pattern sheet provided by yet another embodiment of the present application in different states.

[0024] The description of the reference numerals is as follows:

[0025] 1: Pattern projection device;.

[0026] 10: Electronic pattern sheet;

[0027] 101, 201, 301: Electrically controlled dimming areas; 1011, 2011, 3011: First light-transmitting partitions; 1012, 2012, 3012: Second light-transmitting partitions; S: Independent dimming unit;

[0028] 102: Peripheral area; 1021: Wiring area; 1022: Reinforcement member;

[0029] 103: Power-on interface; 1031: Extension cable;

[0030] 104: Handle;

[0031] 21: Photographic lighting fixture; 211: Lamp housing; 212: Power cord; 213: Mounting bracket;

[0032] 22: Lens barrel; 23: Connecting unit; 200: Slot;

[0033] 17: Control device; 170: Housing; 171: Projection control input unit; 172; Display unit; 173: Interface unit Detailed implementation manners

[0034] 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 changes 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 essentially for illustrative purposes and not for limiting the present utility model.

[0035] 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 the convenience of describing 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.

[0036] 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.

[0037] The technical solutions provided by the present application will be described in detail below in combination with the specific implementation manners.

[0038] Please refer to Figure 1 and Figure 2, is a schematic structural diagram of a pattern projection device 1 provided by an embodiment of the present application, where Figure 1 the electronic pattern sheet of the pattern projection device 1 shown is in a state where it is not installed on the photographic lamp 21, while Figure 2 the electronic pattern sheet of the pattern projection device 1 shown is in a state where it is installed on the photographic lamp 21. The pattern projection device 1 includes an electronic pattern sheet 10 and a photographic lamp 21. The photographic lamp 21 is used to emit visible light, and the electronic pattern sheet 10 is disposed on the visible light propagation path. As an example, the electronic pattern sheet 10 can be detachably connected to the light-emitting end of the photographic lamp 21 by insertion. Of course, the electronic pattern sheet 10 can also be fixed to the photographic lamp 21 so that the photographic lamp 21 has a pattern projection function by itself.

[0039] The pattern projection device 1 may further include a lens barrel 22. The lens barrel 22 is mounted to the photographic lamp 21 through a connection unit 23, and the electronic pattern sheet 10 is located between the light-emitting end of the photographic lamp 21 and the light-incident end of the lens barrel 22. Through the diffusion or condensing effect of the lens barrel 22 on light, the projection pattern formed by the visible light emitted by the photographic lamp 21 passing through the electronic pattern sheet 10 can be enlarged or reduced, thereby changing the range and size of the projection pattern projected onto a wall, a curtain, a background board, or a photographed object. The lens barrel 22 is connected to the photographic lamp 21 through the connection unit 23, and a slot 200 is reserved between the light-incident end of the lens barrel 22 and the light-emitting end of the photographic lamp 21. The electronic pattern sheet 10 can be inserted into the slot 200 for fixation and can be pulled out from the slot 200.

[0040] The photographic lamp 21 includes a lamp housing 211, a power cord 212, and a mounting bracket 213. A light source and a light source driving circuit are provided in the lamp housing 211. The power cord 212 is connected to the driving circuit to supply the electric energy required for the light source to emit light. One end of the mounting bracket 213 is connected to the lamp housing, and the other end is used to be fixed to an external support device. The mounting bracket 213 has an angle adjustment and locking structure.

[0041] Figure 3It is a schematic structural diagram of a control device 17 connected to an electronic pattern sheet 10 provided by an embodiment of the present application. The control device 17 may be an external control device as shown in the figure, which includes a housing 170, a projection control input unit 171, a display unit 172, and an interface unit 173. A control circuit is provided inside the housing 170, mainly including a main control circuit and a driving circuit. In some embodiments, a wireless connection module is also provided inside the housing 170 of the control device 17. The control device 17 may be a control device in the form of a remote control, a control box, a console, a control cabinet, etc. The projection control input unit 171 can be used to select or adjust the type or category of the projection pattern, including realizing the projection control of the projection pattern corresponding to the number by selecting the pattern number. The projection control signal can be input into the control circuit through the projection control input unit 171. The display unit 172 can be used to display the icon, sketch, or pattern number corresponding to the projection pattern to give the user an intuitive control feedback. The projection control signal is converted into a driving signal in the form of voltage or current by the driving circuit and transmitted to the electronic pattern sheet 10 through the interface unit 173.

[0042] Please refer to Figure 4 , which schematically shows a schematic structural diagram of an electronic pattern sheet provided by an embodiment of the present application. The electronic pattern sheet 10 includes an electronically controlled dimming area 101 and a peripheral area 102 located outside the electronically controlled dimming area 101. At least a wiring area 1021 is provided in the peripheral area 102. The electronically controlled dimming area 101 at least includes a first light-transmitting partition 1011 and a second light-transmitting partition 1012. The first light-transmitting partition 1011 and the second light-transmitting partition 1012 have different light transmittances under the drive of a drive signal, so that the visible light emitted from the photographic lamp 21 forms a pattern with light and dark contrast after passing through the first light-transmitting partition 1011 and the second light-transmitting partition 1012. The wiring area 1021 is provided outside the electronically controlled dimming area. Connection lines (not shown in the figure) are provided in the wiring area 1021, and the connection lines are used to transmit the drive signal to the electronically controlled dimming area 101.

[0043] The electronic pattern sheet 10 further includes a power-on interface 103. The power-on interface 103 connects the connection line and the control device 17. Specifically, one end of the power-on interface 103 is connected to the connection line in the wiring area 1021, and the other end is docked with the interface unit 173 to connect the electronic pattern sheet 10 to the control device 17, so as to output a driving signal corresponding to the projection control signal to the electronic pattern sheet 10, thereby controlling the first light-transmitting partition 1011 and the second light-transmitting partition 1012 of the electronic pattern sheet 10 to present different light-transmitting states, so as to form a projection pattern with light and dark contrast. The power-on interface 103 can be directly formed by leading out from the connection line in the wiring area 1021, or can be led out from the connection line through the extension cable 1031. In another example, the peripheral area 102 may further include a reinforcing member 1022 and a handle 104. The reinforcing member 1022 is connected to the outside of the wiring area 1022 and is used to strengthen the structure of the electronic pattern sheet 10. The reinforcing member 1022 can be a side strip made of a rigid material such as metal or hard plastic, which is beneficial to its insertion into the above slot 200 as an insert. Further, the electro-control dimming area 101 of the electronic pattern sheet 10 can be composed of a flexible thin film material. The handle 104 is connected to the reinforcing member 1022, which is convenient for the user to remove or install the electronic pattern sheet 10.

[0044] At least one of the first light-transmitting partition 1011 and the second light-transmitting partition 1012 includes an electrochromic film. The electrochromic film realizes dimming based on the principle of electrochromic (EC) of conductive polymers. The electrochromic film has a low light transmittance when it is not powered on or the amplitude of the driving signal is low, and only a part of the light in the visible light band can pass through. Therefore, the visible light emitted by the photographic lamp 21 presents a dark state such as dark blue, dark green, dark gray or black after passing through the electronic pattern sheet 10. When it is powered on or the amplitude of the driving signal is high, the electrochromic film changes from a dark color to an almost transparent state, and its light transmittance increases, so that most of the visible light can pass through the electronic pattern sheet 10.

[0045] As an example, Figure 4 the first light-transmitting partition 1011 contains an electrochromic film, while the second light-transmitting partition 1012 does not include an electrochromic film, and the second light-transmitting partition 1012 is formed by an opaque substrate. The shape of the first light-transmitting partition 1011 is a fixed pattern, such as the "X" pattern shown in the figure. As another example, the second light-transmitting partition 1012 contains an electrochromic film, while the first light-transmitting partition 1012 does not include an electrochromic film, and the first light-transmitting partition 1012 is formed by a light-transmitting substrate.

[0046] As another embodiment, both the first light-transmitting partition 1011 and the second light-transmitting partition 1012 include electrochromic films, and the electrochromic films in the first light-transmitting partition 1011 and the electrochromic films in the second light-transmitting partition 1012 have different light-transmitting bands. As an example, the electrochromic film in the first light-transmitting partition 1011 can transmit light in the dark blue band when not powered, and the electrochromic film in the second light-transmitting partition 1012 can transmit light in the red band when not powered.

[0047] As another embodiment of the present application, in addition to using electrochromic films as dimming materials, liquid crystal polymer films can also be used as dimming materials. The liquid crystal polymer films achieve dimming based on the principle of Polymer Dispersed Liquid Crystal (PDLC). The liquid crystal polymer films can be combined with colored materials to form a film layer with adjustable haze and color.

[0048] Please refer to Figures 5 to 7 , which is a schematic diagram of the electronic pattern sheet provided by another embodiment of the present application in different states. A plurality of independent dimming units S are distributed in the electronically controlled dimming area 201. Each independent dimming unit S contains an electrochromic film, and the light transmittance of the electrochromic film in each independent dimming unit S can be individually changed according to the driving signal. As an example, the plurality of independent dimming units S are arranged in a matrix. Among them, the first light-transmitting partition 2011 and the second light-transmitting partition 2012 respectively include a plurality of different independent dimming units S. As an example, all the independent dimming units S distributed in the electronically controlled dimming area 201 can be divided into two parts. One part forms the first light-transmitting partition 2011, and the other part forms the second light-transmitting partition 2012. Of course, in other embodiments, a third light-transmitting partition, a fourth light-transmitting partition or more light-transmitting partitions can be further included, that is, the electronically controlled dimming area 201 can be divided into more light-transmitting partitions, and each light-transmitting partition can form a plurality of regions with different light transmittances according to the driving signal, so as to form a projection pattern with richer colors and more levels.

[0049] When each independent dimming unit in the first light-transmitting partition 2011 is under the action of a low-amplitude driving signal, it presents a near-black state where visible light can hardly pass through or a state where only a part of the dark blue visible light band passes through, while the second light-transmitting partition 2012 presents a high light transmittance under the drive of a high-amplitude driving signal, and most of the visible light can pass through the second light-transmitting partition 2012. As Figures 5 to 7As shown, by changing the driving signals of the independent dimming units S, the second light-transmitting partitions corresponding to the shapes of the numbers 1, 2, and 3 can be formed in sequence, while the other independent dimming units S form the first light-transmitting partition with a low light transmittance. The two form a light contrast, thereby forming a projection pattern in which the shape of the bright area corresponds to the shapes of the numbers 1, 2, and 3. As an example, the low-amplitude driving signal is a zero-amplitude voltage signal (power off), and the high-amplitude driving signal is the working voltage amplitude.

[0050] In this example, a common integral light-transmitting substrate is covered on the electrochromic films corresponding to the independent dimming units S in the electronically controlled dimming area 101. The formation and change of the projection pattern can be completed only through the electrochromic films.

[0051] In some other embodiments, the multiple independent dimming units S can also be concentrically radially distributed, and each independent dimming unit is fan-shaped; the multiple independent dimming units S can also be concentrically nested, and each independent dimming unit is circular or annular.

[0052] Please refer to Figures 8 to 11 , which is a schematic diagram of the electronic pattern sheet provided by another embodiment of the present application in different states. A plurality of independent dimming units S are distributed in the electronically controlled dimming area 301. Each independent dimming unit S contains an electrochromic film, and the light transmittance of the electrochromic film in each independent dimming unit S can be changed separately according to the driving signal. In this example, the multiple independent dimming units S are arranged in sequence longitudinally. Of course, they can also be arranged horizontally. A partially light-transmitting substrate is covered on the electrochromic films corresponding to the multiple independent dimming units S, and a plurality of dispersed light-transmitting patterns are formed on the substrate. The plurality of light-transmitting patterns respectively correspond to the independent dimming units. The pattern can be, for example, the water-drop-shaped light-transmitting pattern shown in the figure, or other required light-transmitting patterns. In this example, the first light-transmitting partition 3011 and the second light-transmitting partition 3012 respectively include one or more independent dimming units S. As Figure 8 shown, as an example, when all the independent dimming units S are powered on, the electrochromic films included therein have a high light transmittance, and visible light can sequentially pass through the electrochromic films and the light-transmitting pattern areas on the corresponding substrates to form a water-drop-shaped projection bright area, while in other areas, due to the coverage of the light-impermeable substrate, the visible light passing through the electrochromic films cannot be transmitted through the substrate, thereby correspondingly forming a shadow background area, which forms a projection pattern with light and dark contrast with the water-drop-shaped light-transmitting area. And Figures 9 to 11 respectively show the cases where only the electrochromic film in one independent dimming unit S is powered on. By changing the powered-on or powered-off state of the independent dimming unit S, the second light-transmitting partition 3012 with a changed position can be correspondingly formed, thereby a dynamically changing projection pattern can be displayed.

[0053] The user can adjust or select a target projection pattern through the projection control input unit 171. The projection control input unit 171 can be various input components such as a button, a knob, a DIP switch, a joystick, a touch screen, etc., and the present application is not limited thereto. The control device 17 can also be integrated into the peripheral area 102 of the electronic pattern sheet 10, or integrated into the photographic lamp 21. The photographic lamp 21 is provided with a wired or wireless interface for electrically connecting to the electronic pattern sheet 10.

[0054] The electronic pattern sheet and the pattern projection device provided by the present application form at least two light-transmitting partitions in the electrically controlled dimming area 101 of the electronic pattern sheet 10, and transmit the driving signal to the electrically controlled dimming area through the connection line in the peripheral wiring area, so that the electrically controlled dimming area has different light transmittances in two different light-transmitting partitions under the drive of the driving signal, so that the visible light emitted from the photographic lamp 21 forms a pattern with a light and dark contrast after passing through the two different light-transmitting partitions, namely the first light-transmitting partition 1011 and the second light-transmitting partition 1012. And by connecting the connection line and the control device 17 through the power-on interface 103, the driving signal can be converted and sent from the control device 17 to the electronic pattern sheet 10, which is convenient for the user to switch the projection pattern, so that multiple projection patterns can be switched through one electronic pattern sheet 10, the operation is convenient, and the projection light effect is richer.

[0055] 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. An electronic pattern piece, characterized in that, Comprising: An electrically controlled dimming area, the electrically controlled dimming area at least includes a first light-transmitting partition and a second light-transmitting partition, the first light-transmitting partition and the second light-transmitting partition have different light transmittances under the drive of a drive signal, so that the visible light emitted from the photographic lamp forms a pattern with light and dark contrast after passing through the first light-transmitting partition and the second light-transmitting partition; A wiring area, arranged on the periphery of the electrically controlled dimming area, the wiring area is provided with connection lines, and the connection lines are used to transmit the drive signal to the electrically controlled dimming area; A power-on interface, the power-on interface connects the connection line and the control device.

2. The electronic pattern sheet according to claim 1, characterized in that, At least one of the first light-transmitting partition and the second light-transmitting partition includes an electrochromic film.

3. The electronic pattern sheet according to claim 2, wherein The first light-transmitting partition contains an electrochromic film, the second light-transmitting partition does not include an electrochromic film and the second light-transmitting partition is formed by an opaque or light-transmitting substrate.

4. The electronic pattern sheet according to claim 1, wherein Both the first light-transmitting partition and the second light-transmitting partition include electrochromic films, and the electrochromic films in the first light-transmitting partition and the electrochromic films in the second light-transmitting partition have different light-transmitting bands.

5. The electronic pattern sheet according to claim 1, wherein The first light-transmitting partition and the second light-transmitting partition respectively include a plurality of different independent dimming units, and each independent dimming unit contains an electrochromic film respectively.

6. The electronic pattern sheet according to claim 5, wherein The plurality of independent dimming units are arranged in sequence longitudinally / horizontally, distributed in a concentric radial pattern, distributed in a concentric nested pattern or distributed in a matrix pattern.

7. The electronic pattern sheet according to claim 5, wherein A common integral light-transmitting substrate covers the electrochromic films corresponding to the plurality of independent dimming units.

8. The electronic pattern piece according to claim 1, wherein, The first light-transmitting partition and the second light-transmitting partition respectively include one or more independent dimming units, each independent dimming unit contains an electrochromic film respectively, a partially light-transmitting substrate covers the electrochromic films corresponding to the plurality of independent dimming units, and a plurality of dispersed light-transmitting patterns are formed on the substrate, and the plurality of light-transmitting patterns respectively correspond to the respective independent dimming units.

9. A pattern projection device, characterized in that, Comprising: A photographic lamp, used for emitting visible light; An electronic pattern sheet, used for being arranged on the visible light propagation path, and the electronic pattern sheet is the electronic pattern sheet according to any one of claims 1 to 8.

10. The pattern projection device according to claim 9, wherein It further includes a lens barrel, the lens barrel is mounted on the photographic lamp through a connection unit, and the electronic pattern sheet is located between the light-emitting end of the photographic lamp and the light-incident end of the lens barrel.

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