Optical film group, sun shield, transparent window, vehicle and light control system

Abstract

The invention relates to the field of automobiles, in particular to an optical film module, a sun shield, a transparent window, a vehicle and a light control system. The optical film group comprises a first base layer, a first dimming film optical film layer, a second dimming film and a second base layer which are arranged in a laminated manner; the first dimming film and the second dimming film are used for changing light transmittance through electric control, the optical film layer is provided with a first surface and a second surface which are opposite to each other, the first surface is connected with the first dimming film, the second surface is connected with the second dimming film, and the optical film layer can reflect and transmit light emitted to the first surface and the second surface. The light intensity of the two sides of the optical film layer can be independently adjusted, the combination modes of the light intensity of the two sides of the optical film layer are many, light rays of the two sides of the optical film layer can be selectively reflected or transmitted, and therefore the optical film group can mainly reflect or transmit light emitted to the first base layer or the second base layer. Therefore, the optical film group has more functions and has stronger adaptability to more complex scenes.

Description

Technical Field

[0001] This application relates to the automotive field, and more particularly to an optical film module, a sun visor, a transparent window, a vehicle, and a light control system. Background Technology

[0002] When riding in a vehicle, external light sources may shine directly into the eyes of passengers, resulting in a poor riding or driving experience. Generally, a flip-up sun visor is installed inside the vehicle to block out excessive external light or direct external light sources. In addition, the sun visor can also be used as a mirror for passengers' use.

[0003] However, existing sunshades only have two functions: sunshade and mirror, and are not well adapted to more complex lighting conditions. Summary of the Invention

[0004] The purpose of this application is to provide an optical film module, a sunshade, a transparent window, a vehicle, and a light control system.

[0005] In a first aspect, embodiments of this application provide an optical film assembly, including a first base layer, a second base layer, a first dimming film, a second dimming film, and an optical film layer. The first base layer is light-transmitting; the second base layer is light-transmitting and is spaced apart from the first base layer; the first dimming film is used to change the transmittance by electronic control, and the first dimming film is fixedly connected to the side of the first base layer facing the second base layer; the second dimming film is used to change the transmittance by electronic control, and the second dimming film is fixedly connected to the side of the second base layer facing the first base layer; the optical film layer has a first side and a second side facing away from each other, the first side is connected to the first dimming film, and the second side is connected to the second dimming film, and the optical film layer can reflect and transmit light incident on both the first side and the second side.

[0006] In this embodiment, the first dimming film has at least a bright state and a dark state, and the light transmittance of the first dimming film in the bright state is greater than that in the dark state; the second dimming film has at least a bright state and a dark state, and the light transmittance of the second dimming film in the bright state is greater than that in the dark state; therefore, by adjusting the states of the first dimming film and the second dimming film, the light intensity of light passing through the first dimming film and incident on the first surface and the light intensity of light passing through the second dimming film and incident on the second surface can be changed.

[0007] The optical film layer has a first dimming film on one side and a second dimming film on the other side. Both the first and second dimming films can adjust the light transmittance. Therefore, the light intensity on both sides of the optical film layer can be adjusted independently. There are many ways to combine the light intensity on both sides of the optical film layer. The light on both sides of the optical film layer can be selectively reflected or transmitted. Thus, the optical film group can mainly reflect or transmit the light that is incident on the first substrate, or mainly reflect or transmit the light that is incident on the second substrate. This gives the optical film group more functions and stronger adaptability to more complex scenarios.

[0008] In some embodiments, when the first dimming film is in a bright state and the second dimming film is in a dark state, the light intensity of the light passing through the first dimming film and incident on the first surface is greater than the light intensity of the light passing through the second dimming film and incident on the second surface, and the optical film assembly is in a reflective state.

[0009] Among them, the side of the first base layer that faces away from the second base layer is called the first side, and the side of the second base layer that faces away from the first base layer is called the second side.

[0010] In this embodiment, by cooperating with the first dimming film and the second dimming film, the light intensity of the light incident on the first surface is greater than that of the light incident on the second surface. Therefore, the light intensity of the light incident on the first surface (which is light from the first side) after being reflected by the optical film layer is greater than the light intensity of the light incident on the second surface (which is light from the second side) after being transmitted through the optical film layer. At this time, when light is received on the first side of the optical film group, the reflected light from the first side is greater than the transmitted light from the second side. The optical film group mainly reflects the light from the first side on the first side, that is, it is in a reflection state.

[0011] The optical film group can reflect images of objects in the space on the side opposite to the second base layer (i.e., the first side). The optical film group can act as a "mirror", which is beneficial for observing objects on the first side from the first side.

[0012] In some embodiments, when the first dimming film is in a dark state and the second dimming film is in a bright state, the light intensity of the light passing through the first dimming film and incident on the first surface is less than the light intensity of the light incident on the second surface from the second dimming film, and the optical film assembly is in a light-blocking state.

[0013] In this embodiment, when light is received on the first side of the optical film group, the reflected light from the first side is less than the transmitted light from the second side. The optical film group mainly exhibits a state of light reduction on both the first and second sides on the first side, i.e., a light-blocking state.

[0014] When the transmittance of the first dimming film is greater than 0, the transmitted light mainly from the second side can still be received on the first side. The optical film group can be used as "sunglasses", which is beneficial for observing objects with strong light intensity on the second side from the first side.

[0015] In some embodiments, when the first dimming film is in a bright state and the second dimming film is in a bright state, the optical film group is in a transmission state.

[0016] In this embodiment, both the first dimming film and the second dimming film have high light transmittance. The performance of the optical film group is comparable to that of the optical film layer, that is, it transmits and reflects light on both sides of the optical film group. The optical film group can be used as "transparent glass", which is beneficial for observing objects on the second side from the first side and reducing glare and reflection.

[0017] In some embodiments, when the first dimming film is in a bright state, the light transmittance of the first dimming film is greater than 60%, and when the first dimming film is in a dark state, the light transmittance of the first dimming film is less than 35%; and / or When the second dimming film is in a bright state, its transmittance is greater than 60%; when the second dimming film is in a dark state, its transmittance is less than 35%.

[0018] In this embodiment, the first and second dimming films have strong dimming capabilities, which is beneficial to improving the optical performance of the optical film group.

[0019] In some embodiments, the optical film is a semi-transparent and semi-reflective film or a reflective polarizing film.

[0020] In this embodiment, when the optical film is a semi-transparent and semi-reflective film, the reflectivity and transmittance of the optical film are balanced, which facilitates its cooperation with the first dimming film and the second dimming film.

[0021] When the optical film is a reflective polarizing film, it can reflect and transmit the polarization state of light, which is beneficial to improving the adaptability of the optical film group.

[0022] In some embodiments, the material of the first base layer includes at least one of glass and polymer materials, and / or the material of the second base layer includes at least one of glass and polymer materials.

[0023] In this embodiment, the materials of the first base layer and the second base layer may include polymer materials or glass, respectively, so that the optical film group can transmit light and has good mechanical properties.

[0024] Secondly, embodiments of this application provide an optical film assembly, including a first base layer, a second base layer, and an electro-mirror forming film. The first base layer is light-transmitting; the second base layer is light-transmitting and is spaced apart from the first base layer; the electro-mirror forming film is located between the first and second base layers, and includes a first electrode film, a second electrode film, and an electrolyte. The first and second electrode films are disposed opposite to each other, the first electrode film is connected to the first base layer, the second electrode film is connected to the second base layer, and the electrolyte is contained between the first and second electrode films; wherein, the first electrode film has a first surface facing the second electrode film, the second electrode film has a second surface facing the first electrode film, and the first surface is rougher than the second surface.

[0025] In this embodiment, due to the different roughness of the first and second surfaces, the metal layer deposited on the first surface is rougher than the metal layer deposited on the second surface. When light shines on the first metal layer, it is more likely to undergo diffuse reflection; when light shines on the second metal layer, it is more likely to undergo specular reflection. Therefore, by setting the different roughness of the first and second surfaces, the electro-mirror film has more different reflection states, and thus the optical film group has multiple reflection states for light, enabling the optical film group to adapt to more different environments.

[0026] In some embodiments, the first surface has multiple protrusions or multiple grooves, and the second surface is a plane or a curved surface.

[0027] In this embodiment, the protrusions or grooves on the first surface make it rougher and less smooth, which facilitates the formation of a non-uniform metal layer with low reflectivity when a metal layer is formed on it. The second surface makes it smoother, which facilitates the formation of a uniform metal layer with high reflectivity when a metal layer is formed on it.

[0028] In some embodiments, the electrolyte is a silver ion-containing solution, and when there is a voltage between the first electrode film and the second electrode film, the electrolyte can deposit a silver layer on the first surface or the second surface.

[0029] In this embodiment, the silver layer has good light reflectivity, which is conducive to forming a structure with good mirror effect and makes it easy for the optical film group to be used as a reflector.

[0030] In some embodiments, when there is a first voltage between the first electrode film and the second electrode film, a first metal layer is deposited on the first surface, the reflectivity of the electro-mirror film is less than 15%, and the optical film group is in a light-shielding state.

[0031] In this embodiment, the first metal layer has a low reflectivity and can block light. Therefore, light from the second side cannot pass through the optical film group to the first side, thus blocking the object on the second side. Moreover, the first metal layer has a weak ability to reflect light from the first side and will not reflect light from the object on the first side. Therefore, the optical film group has a good light-blocking effect and does not reflect light.

[0032] In some embodiments, when there is a second voltage between the first electrode film and the second electrode film, the value of the second voltage is less than the value of the first voltage, a third metal layer is deposited on the first surface, the transmittance of the third metal layer is greater than the transmittance of the first metal layer, and the optical film assembly is in a semi-transparent state.

[0033] In this embodiment, the optical film group can partially transmit light beams, allowing objects on one side of the optical film group to be observed from the other side. It is also beneficial for observing objects with strong light intensity and reducing glare, making the optical film group more adaptable.

[0034] In some embodiments, when a third voltage is present between the first electrode film and the second electrode film, a second metal layer is deposited on the second surface, the reflectivity of the electro-mirror film is greater than 40%, and the optical film group is in a reflective state.

[0035] In this embodiment, the second metal layer can reflect light with a high reflectivity, so that the light is reflected to the first side, and a clear image of the object on the first side can be observed through the second metal layer on the first side.

[0036] In some embodiments, when neither the first electrode film nor the second electrode film has a metal layer deposited, the optical film assembly is in a transparent state.

[0037] In this embodiment, the electrospheric mirror film does not require power supply when the optical film is in a transparent state, which helps reduce the power consumption of the optical film during operation. Furthermore, the light beam can penetrate to both sides of the optical film with minimal light intensity loss, facilitating the observation of objects on one side of the optical film while observing objects on the other side. Even in low light conditions, objects on the other side can be observed relatively clearly from one side of the optical film.

[0038] The third aspect includes a package and an optical film assembly as provided in the first or second aspect, wherein the package is fixedly connected to the edge of the optical film assembly.

[0039] In this embodiment, the sunshade has more functions and is more adaptable to more complex lighting scenarios.

[0040] In some embodiments, the optical film assembly has a fixing part and a main body part arranged side by side, the fixing part being fixedly connected to the main body part, the encapsulation part covering the fixing part, and the main body part being exposed relative to the encapsulation part.

[0041] In this embodiment, the encapsulation component is fixed to one side of the optical film assembly, which helps to give the optical film assembly a larger exposed area and give the sunshade better optical performance.

[0042] In some embodiments, the sun visor also includes a light-emitting element for emitting light toward one side of the sun visor.

[0043] In this embodiment, the light-emitting element emits light and illuminates an object on one side. The reflected light from the object on one side can enter the optical film group with a stronger light intensity, thereby presenting a clearer image on that side of the optical film group.

[0044] Fourthly, embodiments of this application provide a transparent window, which includes an optical film assembly as provided in the first or second aspect.

[0045] In this embodiment, the transparent window has more functions and is more adaptable to more complex lighting scenarios.

[0046] Fifthly, embodiments of this application provide a means of transportation, including a sunshade as provided in the third aspect, or a transparent window as provided in the fourth aspect.

[0047] In this embodiment, the vehicle has more functions and a stronger ability to adapt to more complex lighting scenarios.

[0048] In a sixth aspect, embodiments of this application provide a light control system, including a controller and an optical film assembly as provided in the first or second aspect, wherein the controller is used to adjust the transmittance of a first dimming film and the transmittance of a second dimming film of the optical film assembly.

[0049] In this embodiment, the electronic control system controls the optical film group through the controller, which facilitates automatic control of the optical film group and helps to achieve rapid switching of the optical film group's state. Attached Figure Description

[0050] To illustrate the technical solutions in the embodiments or background art of this application, the accompanying drawings used in the embodiments or background art of this application will be described below.

[0051] Figure 1 This is a simplified structural diagram of a means of transportation provided in an embodiment of this application; Figure 2 yes Figure 1 The diagram shown is a simplified representation of the internal structure of the vehicle. Figure 3 yes Figure 2 The diagram shown is a structural schematic of the sun shade in some embodiments. Figure 4 yes Figure 2 The diagram shows a structural schematic of the sun shade in some other embodiments; Figure 5 yes Figure 3 Schematic diagram of the internal structure of the optical film module in some embodiments; Figure 6 yes Figure 5 The diagram illustrates the usage of the optical film assembly in some embodiments. Figure 1 ; Figure 7 yes Figure 5 The diagram illustrates the usage of the optical film assembly in some embodiments. Figure 2 ; Figure 8 yes Figure 5 The diagram illustrates the usage of the optical film assembly in some embodiments. Figure 3 ; Figure 9 yes Figure 4 Schematic diagrams of the optical film module in other embodiments; Figure 10 yes Figure 9 The diagram illustrates the usage of the optical film assembly in some embodiments. Figure 1 ; Figure 11 yes Figure 9 The diagram illustrates the usage of the optical film assembly in some embodiments. Figure 2 . Detailed Implementation

[0052] The embodiments of this application are described below with reference to the accompanying drawings.

[0053] In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," "joining," and "joining" should be interpreted broadly. For example, "joining" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Movable connection" refers to a connection where the relative positional relationship can change after connection. "Rotary connection" refers to a connection where the relative positional relationship can change. "Sliding connection" refers to a connection where the relative positional relationship can change. Furthermore, the integrated structure obtained by a one-piece molding process means that during the formation of one of the two components, that component is connected to the other component without requiring further processing (such as bonding, welding, snap-fit ​​connections, or screw connections) to connect the two components. Components A and B can be arranged relative to each other such that component A is projected along the target direction to obtain projection C, and component B is projected along the target direction to obtain projection D, with projection C and projection D at least largely overlapping. In some embodiments, the majority overlap can be any of the following: projection C is entirely within projection D; or projection D is entirely within projection C; or projection C and projection D intersect each other, and the intersection area of ​​projection C and projection D accounts for more than 50% of projection C or projection D.

[0054] The directional terms mentioned in the embodiments of this application, such as "top," "bottom," "inner," "outer," "upper," and "lower," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0055] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. "Multiple" means at least two.

[0056] Furthermore, the limitations on relative positional relationships mentioned in the embodiments of this application, such as parallelism and perpendicularity, are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallelism or perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0057] Please combine participation Figure 1 and Figure 2 , Figure 1 This is a simplified structural diagram of a vehicle 1000 provided in an embodiment of this application. Figure 2 yes Figure 1 A simplified schematic diagram of the internal structure of the vehicle 1000 shown.

[0058] In some embodiments, the vehicle 1000 may be a car, a ship, an aircraft, or other equipment. This embodiment mainly uses a car as an example for illustrative purposes.

[0059] In some embodiments, the vehicle 1000 may include a chassis 100 and a shell 200. For example, when the vehicle 1000 is a car, the car may be, but is not limited to, a sedan, a multi-purpose vehicle (MPV), a sport / suburban utility vehicle (SUV), an off-road vehicle (ORV), a pickup truck, a van, a bus, a truck, etc. The car may also be an electric vehicle, a gasoline vehicle, or a hybrid vehicle, etc., and this embodiment does not impose strict limitations on these. For ease of description, in the vehicle 1000 of this application, the direction in which the driver faces while driving the vehicle 1000 is defined as "front," and the direction in which the driver faces away from the vehicle is defined as "rear."

[0060] For example, chassis 100 may include a power unit, energy unit, control unit, and tires, etc., to enable the vehicle to operate. The power unit, energy unit, control system, etc., may be housed inside housing 200.

[0061] In this system, the power unit transmits power to the tires to control their rotation, thereby propelling the vehicle body forward or backward. For example, the power unit can be an engine, an electric motor, or a similar powertrain.

[0062] The energy device is used to supply power to the power unit. For example, the energy device can be a battery, a fuel tank, etc. This embodiment does not specifically limit the structure of the chassis 100.

[0063] For example, housing 200 may be housing 2001 of a vehicle. Housing 200 may include housing 2001 and transparent window 2002.

[0064] The housing 2001 may be a metal component. The housing 2001 is used to provide housing and protection for the vehicle 1000.

[0065] The transparent window 2002 can be installed on the housing 2001. For example, the transparent window 2002 can be located on the housing 200 at the front of the driver's cab, or it can be installed on the side or top of the housing. The transparent window 2002 and the housing 200 isolate the driver's cab from the outside of the vehicle, facilitating driving and protecting the driver. The transparent window 2002 also transmits light, allowing for separate observation of the vehicle's interior and exterior. The transparent window 2002 can be made of transparent materials such as glass or plastic, allowing environmental information from outside the vehicle to enter the driver's cab through the transparent window 2002, thus meeting normal driving needs.

[0066] For example, transparent windows can include windshields, side windows, rear windows, skylights, etc.

[0067] In some embodiments, the vehicle 1000 has a cabin 300, which may include a driver's cabin and a passenger cabin. The driver's cabin may include a driver's seat, a steering wheel, and an instrument panel (IP), which may be located in front of the driver's seat. The passenger cabin may include a passenger seat. A console (CNSL) may be provided between the driver's cabin and the passenger cabin.

[0068] In some embodiments, the vehicle 1000 may further include a sun visor 400. Exemplarily, the sun visor 400 may be located in the driver's compartment, for example, on the top side of the driver's seat and between the driver's seat and the windshield, for the driver's convenience. Exemplarily, the sun visor 400 may also be located in the passenger compartment, for example, on the top side of the passenger seat and between the passenger seat and the windshield, for the passenger's convenience.

[0069] It is understood that a means of transport may include more or fewer of the aforementioned components, and the specific composition of the means of transport 1000 is not limited here.

[0070] See Figure 3 and Figure 4 , Figure 3 yes Figure 2 The diagram shown is a structural schematic of the sunshade 400 in some embodiments. Figure 4 yes Figure 2The diagram shows the structure of the sunshade 400 in some other embodiments.

[0071] In some embodiments, the sun visor 400 may include an optical film assembly 10 and an encapsulation component 20. The encapsulation component 20 is fixedly connected to the optical film assembly 10. The optical film assembly 10 may be the main structure of the sun visor 400, used to realize the optical function of the sun visor 400. The encapsulation component 20 may be an encapsulation structure of the sun visor 400, used to encapsulate and protect the optical film assembly 10 or other components of the sun visor 400, and may also be used to connect to the external structure of the sun visor 400.

[0072] In some embodiments, the package 20 may be fixedly connected to a portion of the side of the optical film assembly 10.

[0073] For example, the optical film assembly 10 has a fixing part and a main body part arranged side by side. The fixing part is fixedly connected to the main body part, and the encapsulation member 20 covers the fixing part, with the main body part exposed relative to the encapsulation member 20. Alternatively, the encapsulation member 20 and the main body part can be arranged side by side. In this case, the encapsulation member 20 is fixed to one side of the optical film assembly 10, which helps to give the optical film assembly 10 a larger exposed area and improve the optical performance of the sunshade 400.

[0074] In some embodiments, the material of the encapsulation 20 may include, for example, knitted fabric, leather, plastic, etc.

[0075] In some embodiments, the sunshade 400 may further include a light-emitting element 30. The light-emitting element 30 may be fixedly connected to the optical film assembly 10. The light-emitting element 30 is capable of emitting light toward one side of the optical film assembly 10.

[0076] For example, the two sides of the optical film group 10 can face opposite sides of the space, namely the first side and the second side. The light-emitting element 30 can emit light towards the first side to enhance the light intensity on that side. For instance, when the sunshade 400 needs to be used as a "reflector," that is, when the optical film group 10 is in a reflective state, the light-emitting element 30 emits light and illuminates the object on the first side. The reflected light from the object on the first side can enter the optical film group 10 with a stronger light intensity, thus presenting a clearer image on the first side of the optical film group.

[0077] For example, the light-emitting element 30 may include an LDE (light-emitting diode) lamp, etc.

[0078] For example, the surface of the light-emitting element 30 may have a coating to give the light-emitting element 30 different light-emitting characteristics.

[0079] In some embodiments, the light-emitting element 30 may be a strip structure extending generally in a straight line. For example, the light-emitting element 30 may be arranged side by side with the package 20 and located on one side of the optical film assembly 10.

[0080] In some embodiments, the light-emitting element 30 may be disposed along the edge of the encapsulation 20. For example, the light-emitting element 30 may be disposed together with the encapsulation 20 to surround the edge of the optical film assembly 10, and the light-emitting element 30 may have a large light-emitting area and an illumination area.

[0081] In some embodiments, the sun visor 400 also includes adjustment buttons 40 and light buttons 50.

[0082] The adjustment button 40 is used to adjust the transmittance of the first dimming film and / or the second dimming film, thereby changing the state of the optical film group so that the user can use the light shield.

[0083] The light button 50 can be used to control the light on and off, as well as to control the light brightness.

[0084] The adjustment button 40 and the light button 50 can be combined with the light-emitting element 30. For example, the adjustment button 40 and the light button 50 can be fixed to the surface of the light-emitting element 30.

[0085] In some embodiments, the sun visor 400 may also include a circuit board or similar structure, which can be electrically connected to the electrical components in the sun visor 400. The circuit board may be disposed in the package 20; this embodiment does not specifically limit the placement of the circuit board.

[0086] It is understood that the sun visor 400 may include more or fewer of the above-mentioned components, and the specific composition of the sun visor 400 is not limited herein.

[0087] Please see Figure 5 , Figure 5 yes Figure 3 A schematic diagram of the internal structure of the optical film module 10 in some embodiments.

[0088] In some embodiments, the optical film assembly 10 includes a first base layer 1, a second base layer 2, a first dimming film 3, a second dimming film 4, and an optical film layer 5. Among them, the first layer 1 is able to transmit light.

[0089] For example, the first substrate 1 can be a colorless and transparent thin layer structure, or it can be a colored and transparent thin layer structure. For instance, the first substrate 1 can have a high light transmittance.

[0090] For example, the first base layer 1 can serve as a support structure in the optical film layer 5. For instance, the first base layer 1 can be a flexible material or a rigid material, depending on the requirements. For instance, the first base layer 1 can be rectangular or other shapes, but this embodiment does not impose specific limitations.

[0091] For example, the material of the first base layer 1 may include a polymer material or glass, enabling the optical film assembly 10 to transmit light and possess good mechanical properties. For instance, when the material of the first base layer 1 is plastic, the plastic may include at least one of polyvinyl chloride (PVC), polycarbonate (PC), polyethylene terephthalate (PET), and polyethylene terephthalate-1,4-cyclohexanediethanolate (PETG).

[0092] For example, the first base layer 1 can be a single-layer structure, meaning that the entire structure of the first base layer 1 is roughly the same. In this case, the structure of the first base layer 1 is relatively simple. For example, the first base layer 1 can also be a multi-layer composite material, meaning that the first base layer 1 includes multiple layers with different layer structures. These different layer structures can be stacked, which is beneficial for the first base layer 1 to have better optical or physical properties. The specific configuration can be determined according to requirements.

[0093] Among them, the second layer 2 is able to transmit light.

[0094] For example, the second substrate 2 can be a colorless and transparent thin layer structure, or it can be a colored and transparent thin layer structure. For instance, the second substrate 2 can have a high light transmittance.

[0095] For example, the second base layer 2 can serve as a support structure in the optical film layer 5. For instance, the second base layer 2 can be a flexible material or a rigid material, depending on the requirements. For example, the second base layer 2 can be rectangular or other shapes; this embodiment does not impose specific limitations.

[0096] For example, the material of the second base layer 2 may include a polymer material or glass, enabling the optical film assembly 10 to transmit light and possess good mechanical properties. For instance, when the material of the second base layer 2 is plastic, the plastic may include at least one of polyvinyl chloride (PVC), polycarbonate (PC), polyethylene glycol terephthalate (PET), and polyethylene terephthalate-1,4-cyclohexylenedimethylene terephthalate (PETG).

[0097] For example, the second base layer 2 can be a single-layer structure, meaning that the entire structure of the second base layer 2 is roughly the same. In this case, the structure of the second base layer 2 is relatively simple. For example, the second base layer 2 can also be a multi-layer composite material, meaning that the second base layer 2 includes multiple layers with different layer structures. These different layer structures can be stacked, which is beneficial for the second base layer 2 to have better optical or physical properties. The specific configuration can be determined according to requirements.

[0098] For example, the material, shape, or structure of the second base layer 2 may be the same as or different from that of the first base layer 1, and this embodiment does not make specific limitations.

[0099] The first dimming film 3 is used to change the light transmittance through electronic control. The first dimming film 3 is fixedly connected to the side of the first base layer 1 facing the second base layer 2.

[0100] For example, the first dimming film 3 can have different light transmission states. The first dimming film 3 can have a bright state and a dark state. The light transmittance of the first dimming film 3 in the bright state can be greater than that in the dark state.

[0101] For example, when the first dimming film 3 is in a bright state, its transmittance can be greater than 60%, and when the first dimming film 3 is in a dark state, its transmittance can be less than 35%. The first dimming film 3 has strong dimming capability, which is beneficial to improving the optical performance of the optical film group 10.

[0102] For example, in the bright state, the first dimming film 3 has the highest light transmittance, at which point its light transmission capability is strongest, and it can be approximately completely transparent. In the dark state, the first dimming film 3 has the lowest light transmittance, at which point its light transmission capability is weakest, its light-blocking capability is strongest, and it can be approximately opaque. Alternatively, the first dimming film 3 may also have a relatively high light transmittance in the bright state, but not at its maximum transmittance; similarly, the first dimming film 3 may have a relatively low light transmittance in the dark state, but not at its minimum transmittance. In this embodiment, the light-transmitting and dark states of the first dimming film 3 are not strictly limited.

[0103] For example, the first dimming film 3 can continuously change its transmittance between bright and dark states, so that the light intensity of the light passing through the first dimming film 3 can be continuously changed, but this embodiment is not strictly limited to this.

[0104] For example, the first dimming film 3 can be an SPD (Suspended Particle Device) dimming film. The core of the SPD dimming film is light-absorbing particles suspended in the interlayer. When the dimming film is not powered, the light-absorbing particles in the interlayer move randomly, absorbing more than 99% of visible light, and appearing opaque. When powered (such as with 110V AC), the light-absorbing particles in the interlayer align in a specific direction, allowing light to pass through, thus achieving the adjustment of the transparency of the SPD dimming film. The SPD dimming film has an extremely wide dimming range and a fast response speed, exhibiting excellent performance. It can achieve precise photothermal control from near-total darkness to high transparency.

[0105] For example, the first dimming film 3 can be an EC (Electrochromic) dimming film. The EC dimming film changes the optical properties of the material through a redox reaction, achieving reversible adjustment of the light transmittance from 5% to 75%, and can maintain the last state after power is turned off. The EC dimming film can achieve stepless and smooth dimming from transparent to dark, and it has extremely low power consumption and stable state.

[0106] For example, the first dimming film 3 can be an LC (Liquid Crystal) dimming film, which adjusts the light transmittance based on the change in the arrangement of liquid crystal molecules. When the power is off, the liquid crystal molecules of the LC dimming film are disordered, and the light is scattered in a fogged state, so the LC dimming film is frosted and opaque; when the power is applied, the molecules of the LC dimming film are ordered, and the light passes through directly, so the LC dimming film becomes transparent.

[0107] For example, the first dimming film 3 can be directly fixedly connected to the first base layer 1. For example, the first dimming film 3 can be bonded to the first base layer 1. For example, the shape of the first dimming film 3 can be substantially the same as the shape of the first base layer 1.

[0108] The second dimming film 4 is used to change the light transmittance through electronic control. The second dimming film 4 is fixedly connected to the side of the first base layer 1 facing the second base layer 2.

[0109] For example, the second dimming film 4 can have different light transmission states. The second dimming film 4 can have a bright state and a dark state. The light transmittance of the second dimming film 4 in the bright state can be greater than that in the dark state.

[0110] For example, when the second dimming film 4 is in a bright state, its transmittance is greater than 60%, and when the second dimming film 4 is in a dark state, its transmittance is less than 35%. The second dimming film 4 has strong dimming capability, which is beneficial to improving the optical performance of the optical film group 10.

[0111] For example, in the bright state, the second dimming film 4 has the highest light transmittance, at which point its light transmission capability is strongest, and it can be approximately completely transparent. In the dark state, the second dimming film 4 has the lowest light transmittance, at which point its light transmission capability is weakest, its light-blocking capability is strongest, and it can be approximately opaque. Alternatively, the second dimming film 4 may also have a relatively high light transmittance in the bright state, but not at its maximum transmittance; similarly, the second dimming film 4 may have a relatively low light transmittance in the dark state, but not at its minimum transmittance. This embodiment does not strictly limit the light transmittance and dark state of the second dimming film 4.

[0112] For example, the second dimming film 4 can continuously change its transmittance between bright and dark states, so that the light intensity of the light passing through the second dimming film 4 can be continuously changed, but this embodiment is not strictly limited to this.

[0113] For example, the second dimming film 4 can be an SPD (Suspended Particle Device) dimming film. The core of the SPD dimming film is light-absorbing particles suspended in the interlayer. When the dimming film is not powered, the light-absorbing particles in the interlayer move randomly, absorbing more than 99% of visible light, and appearing opaque. When powered (such as with 110V AC), the light-absorbing particles in the interlayer align in a specific direction, allowing light to pass through, thus achieving the adjustment of the transparency of the SPD dimming film. The SPD dimming film has an extremely wide dimming range and a fast response speed, exhibiting excellent performance. It can achieve precise photothermal control from near-total darkness to high transparency.

[0114] For example, the second dimming film 4 can be an EC (Electrochromic) dimming film. The EC dimming film changes the optical properties of the material through a redox reaction, achieving reversible adjustment of the light transmittance from 5% to 75%, and can maintain the last state after power is turned off. The EC dimming film can achieve stepless and smooth dimming from transparent to dark, and it has extremely low power consumption and stable state.

[0115] For example, the second dimming film 4 can be an LC (Liquid Crystal) dimming film, which adjusts the light transmittance based on changes in the arrangement of liquid crystal molecules. When the power is off, the liquid crystal molecules of the LC dimming film are disordered, and the light is scattered in a fogged state, making the LC dimming film frosted and opaque; when the power is applied, the molecules of the LC dimming film are ordered, and light passes through directly, making the LC dimming film transparent.

[0116] For example, the second dimming film 4 may be the same type or a different type of dimming film as the first dimming film 3; this embodiment does not impose specific limitations in this regard. For instance, the transmittance of the second dimming film 4 in the bright state may be the same as that of the first dimming film 3 in the bright state, and the transmittance of the second dimming film 4 in the dark state may be the same as that of the first dimming film 3 in the dark state. This embodiment does not impose strict limitations in this regard.

[0117] For example, the second dimming film 4 can be directly fixedly connected to the second base layer 2. For example, the second dimming film can be bonded to the second base layer. For example, the shape of the second dimming film 4 can be approximately the same as the shape of the second base layer 2. It is understood that both the first dimming film 3 and the second dimming film 4 are located between the first base layer 1 and the second base layer 2, and the first dimming film 3 and the second dimming film 4 can be arranged opposite to each other.

[0118] The optical film layer 5 has a first surface 51 and a second surface 52 that are opposite to each other. When the light incident on the first surface 51 and the light incident on the second surface 52 have different light intensity differences, the optical film layer 5 has different reflective and transmissive capabilities.

[0119] For example, the optical film layer 5 has both transmission and reflection capabilities for light beams. That is, when a light beam is incident on the optical film layer 5, the optical film layer 5 can reflect part of the light and transmit part of the light. When there are light beams on both sides of the optical film layer 5, both the first surface 51 and the second surface 52 of the optical film layer 5 can reflect and transmit the light beams. When the light intensity on one side of the optical film layer 5 is stronger, the optical film layer 5 mainly reflects the light from the stronger side on the stronger side, and mainly transmits the light beam from the stronger side on the weaker side.

[0120] For example, the optical film layer 5 can be a beam-splitting film. For instance, the optical film layer 5 can be a semi-transparent, semi-reflective film, in which case the reflectivity and transmittance of the optical film layer 5 are balanced, facilitating its cooperation with the first dimming film 3 and the second dimming film 4. The semi-transparent, semi-reflective film splits the light beam by approximately 50%, meaning that 50% of the light intensity of the beam is transmitted through the optical film layer 5 (i.e., 50% transmittance), and 50% of the light intensity of the beam is reflected by the optical film layer 5 (i.e., 50% reflectance).

[0121] In some examples, optical layer 5 can also be a polarizing film, also called a polarizing film. For example, optical layer 5 can be a reflective polarizer mirror (RPM), which can selectively reflect and transmit polarized light, improving the display effect. In this case, the optical layer can reflect and transmit the polarization state of light, which is beneficial to improving the adaptability of the optical film group.

[0122] It is understood that different spectrophotometers can have different transmittance to emissivity ratios. In this embodiment, a spectrophotometer with a suitable transmittance to emissivity ratio can be used as needed.

[0123] Understandably, the working principle of a semi-transparent, semi-reflective film is based on the principle of light interference. When light travels from one medium to another (such as air hitting a coated surface), reflection and refraction occur at the interface. If two beams of reflected light are formed on the upper and lower surfaces of the film, respectively, these two beams will have a phase difference due to their different paths, resulting in interference. By precisely controlling the thickness and refractive index of the film, a specific ratio of reflected to transmitted light can be achieved at certain wavelengths, thus realizing the semi-transparent, semi-reflective effect.

[0124] Semi-transparent and semi-reflective films are typically composed of multiple layers of alternating metallic and non-metallic materials. Common fabrication processes for semi-transparent and semi-reflective films include physical vapor deposition (PVD), such as evaporation coating or ion beam sputtering, to ensure high precision and durability of the film layer. For semi-transparent and semi-reflective films with complex structures (such as microprism beam splitters), precision molding or etching techniques are also required to form the surface microstructure. This embodiment does not specifically limit the structure and fabrication process of the semi-transparent and semi-reflective film.

[0125] For example, the optical film layer 5 is located between the first dimming film 3 and the second dimming film 4. For instance, the first surface 51 of the optical film layer 5 faces the first dimming film 3, and the second surface 52 of the optical film layer 5 faces the second dimming film 4.

[0126] For example, the optical film layer 5 can be fixedly connected to the first dimming film 3 and the second dimming film 4. For instance, the first surface 51 can be fixedly connected to the first dimming film 3 by adhesive, and the second surface 52 can be fixedly connected to the second dimming film 4 by adhesive.

[0127] For example, the optical film 5 can be flexible, or it can be rigid.

[0128] It is understood that the optical film group 10 has two opposing spaces on the outside. The side facing away from the second base layer 2 relative to the first base layer 1 is defined as the first side 1a, and the side facing away from the first base layer 1 relative to the second base layer 2 is defined as the second side 2a. Both the first side 1a and the second side 2a can receive light rays that strike the optical film group 10.

[0129] Light rays from the first side 1a strike the optical film group 10, pass through the first base layer 1, then through the first dimming film 3, and after passing through the optical film layer 5, a portion of the light is transmitted through the optical film layer 5 and sequentially passes through the second dimming film 4 and the second base layer 2 (this demonstrates the transmission effect of the optical film group 10 on the light from the first side 1a), while the other portion of the light is reflected from the optical film layer 5 and sequentially passes through the first dimming film 3 and the first base layer 1 (this demonstrates the reflection effect of the light from the first side 1a of the optical film group 10). It can be understood that the light passing through the first dimming film 3 and striking the optical film group 10 originates from the first side 1a.

[0130] Similarly, light rays from the second side 2a, when incident on the optical film group 10, will pass through the second base layer 2, then through the second dimming film 4, and after passing through the optical film layer 5, a portion of the light will be transmitted through the optical film layer 5 and sequentially pass through the first dimming film 3 and the first base layer 1 (this demonstrates the transmission effect of the optical film group 10 on the light from the second side 2a), while the other portion of the light will be reflected from the optical film layer 5 and sequentially pass through the second dimming film 4 and the second base layer 2 (this demonstrates the reflection effect of the light from the second side 2a of the optical film group 10). It can be understood that the light passing through the second dimming film 4 and incident on the optical film group 10 originates from the second side 2a.

[0131] In this embodiment, the first dimming film 3 has at least a bright state and a dark state, and the light transmittance of the first dimming film 3 in the bright state is greater than that in the dark state; the second dimming film 4 has at least a bright state and a dark state, and the light transmittance of the second dimming film 4 in the bright state is greater than that in the dark state; therefore, by adjusting the states of the first dimming film 3 and the second dimming film 4, the light intensity of the light passing through the first dimming film 3 and incident on the first surface 51 and the light intensity of the light passing through the second dimming film 4 and incident on the second surface 52 can be changed.

[0132] The optical film layer 5 has a first dimming film 3 on one side and a second dimming film 4 on the other side. Both the first dimming film 3 and the second dimming film 4 can adjust the light transmittance. Therefore, the light intensity on both sides of the optical film layer 5 can be adjusted independently. There are many ways to combine the light intensity on both sides of the optical film layer 5. The light on both sides of the optical film layer 5 can be selectively reflected or transmitted. Thus, the optical film group 10 can mainly reflect or transmit the light incident on the first substrate 1, or mainly reflect or transmit the light incident on the second substrate 2. This gives the optical film group 10 more functions and stronger adaptability to more complex scenes.

[0133] When the optical film module 10 is applied to the sun shade, the sun shade has more functions and is more adaptable to more complex scenarios.

[0134] Please see Figure 6 , Figure 6 yes Figure 5 The optical film assembly 10 shown is illustrated in some embodiments of its usage. Figure 1 .

[0135] In some embodiments, when the first dimming film 3 is in a bright state and the second dimming film 4 is in a dark state, the light intensity of the light incident on the first surface 51 is greater than the light intensity of the light incident on the second surface 52, and the optical film group 10 is in a reflective state.

[0136] In this configuration, the first dimming film 3 is in a bright state, has high light transmittance, and the light intensity of the beam passing through the first dimming film 3 and directed onto the first surface 51 is relatively high. The light intensity reflected by the optical film layer 5 to the first side 1a is also relatively high. The second dimming film 4 is in a dark state, has low light transmittance, and the light intensity of the beam passing through the second dimming film 4 and directed onto the second surface 52 is relatively low. The light intensity transmitted by the optical film layer 5 to the first side 1a is also relatively low.

[0137] In this embodiment, through the cooperation of the first dimming film 3 and the second dimming film 4, the light intensity of the light incident on the first surface 51 is greater than the light intensity of the light incident on the second surface 52. Therefore, the light intensity of the light incident on the first surface 51 (which is the light from the first side 1a) after being reflected by the optical film layer 5 is greater than the light intensity of the light incident on the second surface 52 (which is the light from the second side 2a) after being transmitted through the optical film layer 5. At this time, when the optical film group 10 receives light on the first side 1a, the reflected light from the first side 1a is greater than the transmitted light from the second side 2a. The optical film group 10 mainly reflects the light from the first side 1a on the first side 1a, that is, it is in a reflection state.

[0138] The optical film group 10 can reflect images of objects in the space on the side opposite to the second base layer 2 (i.e., the first side 1a) relative to the first base layer 1. The optical film group 10 can act as a "reflector", which is beneficial for observing objects on the first side 1a.

[0139] Please see Figure 7 , Figure 7 yes Figure 5 The optical film assembly 10 shown is illustrated in some embodiments of its usage. Figure 2 .

[0140] In some embodiments, when the first dimming film 3 is in a dark state and the second dimming film 4 is in a bright state, the light intensity of the light passing through the first dimming film 3 and incident on the first surface 51 is less than the light intensity of the light passing through the second dimming film 4 and incident on the second surface 52, and the optical film group 10 is in a light-shielding state.

[0141] For example, when the optical film group 10 is in a light-blocking state, the transmittance of the optical film group 10 can be less than 30%, such as 10%.

[0142] In this configuration, the first dimming film 3 is in a dark state, has low transmittance, and the light intensity of the beam passing through it and reaching the first surface 51 is relatively low. After reflection from the optical film layer 5 and transmission through the first dimming film 3, the light intensity of the beam reaching the first side 1a is further reduced. In other words, the beam on the first side 1a passes through the dark-state first dimming film 3 twice. The second dimming film 4 is in a bright state, has high transmittance, and the light intensity of the beam passing through it and reaching the second surface 52 is relatively high. The light intensity of the beam after transmission through the optical film layer 5 is high, and after transmission through the first dimming film 3, the light intensity reaching the first side 1a is reduced.

[0143] Therefore, through the cooperation of the first dimming film 3 and the second dimming film 4, the light intensity incident on the first surface 51 is less than the light intensity incident on the second surface 52. Consequently, the light intensity of the light incident on the first surface 51 (which is the light from the first side 1a) after reflection by the optical film layer 5 is less than the light intensity of the light incident on the second surface 52 (which is the light from the second side 2a) after transmission by the optical film layer 5. After passing through the first dimming film 3, the light intensity of both is reduced, but the former is still less intense. At this time, when the optical film group 10 receives light on the first side 1a, the reflected light from the first side 1a is less than the transmitted light from the second side 2a. The optical film group 10 mainly weakens the light from both the first side 1a and the second side 2a on the first side 1a, and the reflected light from the first side 1a is very small, that is, it is in a light-blocking state.

[0144] When the transmittance of the first dimming film 3 is greater than 0, the transmitted light mainly from the second side 2a can still be received on the first side 1a. The optical film group 10 can be used as "sunglasses", which is beneficial for observing objects with strong light intensity on the second side 2a from the first side 1a.

[0145] In some other embodiments, the first dimming film 3 and the second dimming film 4 are both in a dark state. In this case, both the first dimming film 3 and the second dimming film 4 are in a dark state, and both absorb and block the light beam incident on the optical film assembly 10. Furthermore, the light intensity on both sides of the optical film layer 5 is low, and the light beams on both sides of the optical film assembly 10 need to pass through the dark dimming films twice. The light intensity of the light beams emitted from both sides of the optical film assembly 10 is also low, and the optical film assembly 10 can also block the light beam, achieving a light-blocking state. The light intensity on both sides of the optical film layer 5 can be approximately the same, but is not limited to this.

[0146] Please see Figure 8 , Figure 8 yes Figure 5 The optical film assembly 10 shown is illustrated in some embodiments of its usage. Figure 3 .

[0147] In some embodiments, when the first dimming film 3 is in a bright state and the second dimming film 4 is in a bright state, the optical film group 10 is in a transmission state.

[0148] In this configuration, the second dimming film 4 is in a bright state, has high transmittance, and the light intensity of the beam passing through it and projecting onto the second surface 52 is relatively high. The first dimming film 3 is also in a bright state, has high transmittance, and the light intensity of the beam after transmission through the optical film layer 5, the first dimming film 3, and the first base layer 1 remains relatively high. At this time, the light on the second side 2a can be transmitted to the first side 1a with a relatively strong light intensity, and the optical film assembly 10 is in a transmission state.

[0149] For example, when the optical film group 10 is in a transmission state, the transmittance of the optical film group 10 can be 30%. In some other embodiments, when the optical film group 10 is in a transmission state, the transmittance of the optical film group 10 can be larger, such as more than 50%.

[0150] It is understandable that, similarly, the light from the first side 1a can also be transmitted to the second side 2a with a relatively strong light intensity.

[0151] It is understandable that the light intensity on both sides of the optical film layer 5 is mainly determined by the ambient light on both sides of the optical film layer 5.

[0152] Therefore, the first dimming film 3 and the second dimming film 4 both have high light transmittance. The performance of the optical film group 10 is comparable to that of the optical film layer 5. That is, the optical film group 10 transmits and reflects light on both sides. The optical film group 10 can be used as "transparent glass", which is beneficial for observing objects on the second side 2a from the first side 1a and helps to reduce glare and reflection.

[0153] In some other embodiments, when the second dimming film 4 is in a bright state and the first dimming film 3 is in a semi-transparent state, the optical film group 10 is in a transmission state.

[0154] Among them, the transmittance of the first dimming film 3 in the semi-transparent state is between that in the bright state and the dark state.

[0155] In this process, the light beam from the second side 2a passes through the optical film assembly 10 to the first side 1a, passing through the first dimming film 3 once. The intensity of this transmitted light is still relatively strong. The light beam from the first side 1a then passes through the first dimming film 3, is reflected by the optical film layer 5, and then passes through the first dimming film 3 and the first base layer 1 to the first side 1a. It passes through the first dimming film 3 twice, and the intensity of this reflected light is weaker. Therefore, the transmitted light received from the second side 2a on the first side 1a is stronger than the reflected light from the first side 1a, reducing the reflection of light from the first side 1a and minimizing the impact of reflections on the first side 1a. This allows the optical film assembly 10 to clearly observe the object on the second side 2a from the first side 1a.

[0156] In some embodiments, when the optical film group 10 is applied to a sun visor and the sun visor is applied to a vehicle, the state of the optical film group 10 can correspond to the state of the sun visor. The first side 1a of the optical film group 10 can face the inside of the vehicle, such as a seat, and the second side 2a of the optical film group 10 can face the outside of the vehicle, such as a windshield. This allows the user to adjust the different states of the sun visor according to different needs and thus use the sun visor.

[0157] Please see Figure 9 , Figure 9 yes Figure 4 Schematic diagrams of the optical film module in some other embodiments.

[0158] In some embodiments, the light-emitting module may include a first substrate 1, a second substrate 2, and an electrospherical film 6.

[0159] The materials and structures of the first base layer 1 and the second base layer 2 can be referenced. Figures 5 to 8 The relevant descriptions of the embodiments will not be repeated in this embodiment.

[0160] The electroluminescent film 6 can be located between the first substrate 1 and the second substrate 2. The first substrate 1, the electroluminescent film 6, and the second substrate 2 can be stacked. The electroluminescent film 6 can be fixedly connected to the first substrate 1 and the second substrate 2. For example, the electroluminescent film 6 has two opposing sides, and the two sides can be fixedly connected to the first substrate 1 and the second substrate 2 by adhesive.

[0161] In some implementations, the electroluminescent mirror film 6 may include a first electrode film 61, a second electrode film 62, and an electrolyte 63. The first electrode film 61 and the second electrode film 62 are disposed opposite to each other, and the electrolyte 63 is contained between the first electrode film 61 and the second electrode film 62. The first electrode film 61 is connected to a first substrate 1, and the second electrode film 62 is connected to a second substrate 2.

[0162] For example, the first electrode film 61 may include a first substrate and a first conductive layer. The first conductive layer is attached to the substrate and is located on the side of the first substrate facing the electrolyte 63, and the first conductive layer can contact the electrolyte 63. The first substrate serves as a support structure, supporting the conductive layer and containing the electrolyte 63. The first substrate may be made of a transparent material, such as a polymer material or glass. The first conductive layer is conductive and serves as an electrode for electrolyzing the electrolyte 63. The first conductive layer may be made of a transparent material, such as an ITO (Indium Tin Oxide) film.

[0163] For example, the second electrode film 62 may include a second substrate and a second conductive layer. The second conductive layer is attached to the substrate and is located on the side of the second substrate facing the electrolyte 63, and the second conductive layer can contact the electrolyte 63. The second substrate serves as a support structure, supporting the conductive layer and containing the electrolyte 63. The second substrate may be made of a transparent material, such as a polymer material or glass. The second conductive layer is conductive and serves as an electrode for electrolyzing the electrolyte 63. The second conductive layer may be made of a transparent material, such as an ITO (Indium Tin Oxide) film.

[0164] For example, the electrolyte 63 may contain metal ions, and the electrolyte 63 can deposit metal under the application of an electric current. The first electrode film 61 has a first surface 611 facing the second electrode film 62, and the second electrode film 62 has a second surface 621 facing the first electrode film 61. For example, the electrolyte 63 is a solution containing silver ions. By applying a voltage between the first electrode film 61 and the second electrode film 62, the electrolyte 63 can deposit a silver layer on either the first surface 611 or the second surface 621. In this case, the silver layer has good light reflectivity, which is beneficial for forming a structure with a good mirror effect, facilitating the use of the optical film assembly 10 as a reflector.

[0165] It is understandable that applying a voltage between the first electrode film 61 and the second electrode film 62 can cause the metal ions in the electrolyte 63 to undergo a redox reaction and be deposited on the first electrode film 61 or the second electrode film 62 in the form of a metal layer.

[0166] Furthermore, the first electrode film 61 has a first surface 611 facing the second electrode film 62, and the second electrode film 62 has a second surface 621 facing the first electrode film 61. The first surface 611 is rougher than the second surface 621. It can be understood that, after energization, when a metal layer is deposited on the first electrode film 61, it is deposited on the first surface 611 to form a first metal layer 612; when a metal layer is deposited on the second electrode film 62, it is deposited on the second surface 621 to form a second metal layer 622.

[0167] Because the roughness of the first surface 611 and the second surface 621 is different, the metal layer deposited on the first surface 611 (first metal layer 612) is rougher than the metal layer deposited on the second surface 621 (second metal layer 622). When light shines on the first metal layer 612, it is more likely to undergo diffuse reflection; when light shines on the second metal layer 622, it is more likely to undergo specular reflection. Therefore, by setting the different roughness of the first surface 611 and the second surface 621, the electroluminescent film 6 has more different reflection states, and thus the optical film group 10 has multiple reflection states for light, enabling the optical film group 10 to adapt to more different environments.

[0168] In some embodiments, the second surface 621 is a plane or a curved surface, and the first surface 611 has a plurality of protrusions or a plurality of grooves.

[0169] For example, protrusions or grooves on the first surface 611 may be distributed across the entire surface. Multiple protrusions or grooves may be distributed on the first surface 611 in a uniform or non-uniform manner.

[0170] For example, a protrusion can be roughly hemispherical, cylindrical, or conical in shape. A groove can also be roughly hemispherical, cylindrical, or conical in shape. For example, both protrusions and grooves can be irregular shapes.

[0171] For example, the second surface 621 may be a continuous surface. That is, the second surface 621 may have virtually no protrusions or grooves, and the second surface 621 has a high degree of smoothness.

[0172] In this embodiment, the protrusions or grooves on the first surface 611 make the first surface 611 rougher and less smooth, which is beneficial for forming a non-uniform metal layer with low reflectivity when a metal layer is formed on it. The second surface 621 makes the second surface 621 smoother, which is beneficial for forming a uniform metal layer with high reflectivity when a metal layer is formed on it.

[0173] In some embodiments, neither the first electrode film 61 nor the second electrode film 62 has a metal layer deposited, and the optical film group 10 is in a transparent state.

[0174] For example, when the optical film group 10 is in a transparent state, the light transmittance of the optical film group 10 can be greater than 60%, but it is not strictly limited to this.

[0175] It is understandable that, in the electrolyte 63, the electrolyte 63, the first electrode film 61, and the second electrode film 62 are transparent, and therefore, the optical film assembly 10 is transparent. Both the first electrode film 61 and the second electrode film 62 are metal layers formed by depositing elemental metals.

[0176] At this time, when the optical film group 10 is in a transparent state, the electro-mirror film 6 does not need to be powered, which helps to reduce the power consumption of the optical film group 10 during operation. Moreover, the light beam can be transmitted through both sides of the optical film group 10 with low light intensity loss, which is beneficial for observing objects on the other side from one side of the optical film group 10. Even in low light conditions, objects on the other side can be observed relatively clearly from one side of the optical film group 10.

[0177] Please see Figure 10 , Figure 10 yes Figure 9 The optical film assembly 10 shown is illustrated in some embodiments of its usage. Figure 1 .

[0178] In some embodiments, when there is a first voltage between the first electrode film 61 and the second electrode film 62, a first metal layer 612 is deposited on the first surface 611, and the optical film group 10 is in a light-shielding state.

[0179] For example, the reflectivity of the electroluminescent film 6 is less than 15%, but it is not strictly limited to this. In this case, the electroluminescent film 6 has low reflectivity and low transmittance, and the reflective surface of the electroluminescent film 6 is matte. For example, the reflectivity of the electroluminescent film 6 can be 10%. It is understood that the first substrate 1 and the second substrate 2 are transparent, and the reflectivity of the optical film group 10 is substantially the same as that of the electroluminescent film 6.

[0180] At this time, the first metal layer 612 has a low reflectivity and can block light. Therefore, the light from the second side 2a cannot pass through the optical film group 10 to the first side 1a. It can block the light from the object on the second side 2a and has a weak ability to reflect the light from the first side 1a. Therefore, the optical film group 10 has a good light-blocking effect and does not reflect light.

[0181] In some other embodiments, when there is a second voltage between the first electrode film 61 and the second electrode film 62, the value of the second voltage is less than the value of the first voltage, and a third metal layer is deposited on the first surface 611. The transmittance of the third metal layer is greater than the transmittance of the first metal layer 612, so that the optical film group 10 is in a semi-transparent state.

[0182] For example, the second voltage can be in the same direction as the first voltage.

[0183] For example, since the second voltage is less than the first voltage, it is advantageous to make the thickness of the third metal layer less than the thickness of the first metal layer 612, thereby making the light transmittance of the third metal layer greater than the light transmittance of the first metal layer 612, and thus making the third metal layer in a semi-transparent state, and the optical film group 10 is also in a semi-transparent state.

[0184] At this time, the optical film group 10 can partially transmit the light beam, allowing the object on the other side to be observed from one side of the optical film group 10. It is also beneficial for observing objects with strong light intensity and reducing glare, making the optical film group 10 more adaptable.

[0185] Please see Figure 11 , Figure 11 yes Figure 9 The optical film assembly 10 shown is illustrated in some embodiments of its usage. Figure 2 .

[0186] In some embodiments, when a third voltage is present between the first electrode film 61 and the second electrode film 62, a second metal layer 622 is deposited on the second surface 621, and the optical film group 10 is in a reflective state.

[0187] For example, the reflectivity of the second metal layer 622 may be greater than that of the first metal layer 612. For instance, for light from the first side 1a, the reflectivity of the second metal layer 622 is greater than that of the first metal layer 612.

[0188] For example, when the optical film group 10 is in a reflective state, the reflectivity of the electroluminescent film 6 is greater than 40%, but it is not strictly limited to this. At this time, the reflectivity of the electroluminescent film 6 is high, and the second metal layer 622 is mirror-like. For example, the reflectivity of the electroluminescent film 6 can be 70%.

[0189] It is understandable that the second metal layer 622 and the first metal layer 612 are deposited on different electrode films, and the directions of the third voltage and the first voltage can be opposite.

[0190] At this time, the second metal layer 622 can reflect light with a high reflectivity, so that the light is reflected to the first side 1a, and a clear image of the object on the first side 1a can be observed through the second metal layer 622 on the first side 1a.

[0191] This application also provides a transparent window, which includes an optical film assembly. The optical film assembly can cover the required size of the transparent window.

[0192] For example, transparent windows can be used as windshields, skylights, side windows, rear windows, etc.

[0193] For example, the transparent window may also include more layers to meet the requirements of impact resistance, sound insulation, defrosting, etc. This embodiment does not impose specific limitations.

[0194] For example, a transparent window can integrate a light sensor. The light sensor can be used to detect the light intensity on one or both sides of the transparent window, allowing for automatic adjustment of the window's state based on ambient light intensity. For instance, the transparent window can be adjusted to ensure it does not obstruct the view while providing shade. When used in vehicles, transparent windows offer enhanced safety and comfort.

[0195] In this embodiment, the specific structure of the optical film assembly can be referred to... Figures 6 to 11 The relevant descriptions of the embodiments will not be repeated in this embodiment.

[0196] This application also provides a light control system, including a controller and an optical film group, wherein the controller is used to adjust the transmittance of a first dimming film of the optical film group and the transmittance of a second dimming film of the optical film group.

[0197] The specific structure of the optical film module can be found in [reference]. Figures 6 to 11 The relevant descriptions of the embodiments will not be repeated in this embodiment.

[0198] The controller can be electrically connected to the first and second dimming films to control and adjust their light transmittance. For example, the controller can control the first dimming film to switch between a bright state and a dark state, or it can control the light transmittance of the first dimming film to continuously change between maximum and minimum light transmittance. Similarly, the controller can control the second dimming film to switch between a bright state and a dark state, or it can control the light transmittance of the second dimming film to continuously change between maximum and minimum light transmittance.

[0199] It is understandable that the controller controls the switching of the optical film group between different states by adjusting the transmittance of the first dimming film and the second dimming film of the optical film group, thereby enabling the optical film group to have different functions and adapt to different usage scenarios.

[0200] In this embodiment, the electronic control system controls the optical film group through the controller, which facilitates automatic control of the optical film group and helps to achieve rapid switching of the optical film group's state.

[0201] In some embodiments, the controller may include a processor, a memory, and interface circuitry. The processor, interface circuitry, and memory are connected via internal interconnects. The memory stores instructions, and the processor executes the instructions stored in the memory to receive / send parameters via the interface circuitry. Optionally, the memory may be coupled to the processor via an interface or integrated with the processor.

[0202] It should be noted that the aforementioned interface circuit may include, but is not limited to, transceiver devices such as input / output interfaces, to enable communication between the device and other devices or communication networks. For example, the interface circuit can be used to obtain water level information in the pressure relief pipe, or to achieve communication with sensors.

[0203] In this application embodiment, a processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a type of microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. These logical relationships of hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as a field-programmable gate array (FPGA). In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), tensor processing unit (TPU), deep learning processing unit (DPU), etc.

[0204] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0205] It should be noted that all the above figures are exemplary illustrations of this application and do not represent the actual size of the product. Furthermore, the dimensional proportions between the components in the figures are not intended to limit the actual product of this application.

[0206] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An optical film assembly, characterized in that, include: The first layer is translucent; The second layer is translucent and is spaced apart from the first layer; The first dimming film is used to change the light transmittance by electronic control, and the first dimming film is fixedly connected to the side of the first base layer facing the second base layer; The second dimming film is used to change the light transmittance by electronic control, and the second dimming film is fixedly connected to the side of the second base layer facing the first base layer; as well as An optical film layer has a first side and a second side facing away from each other. The first side is connected to the first dimming film, and the second side is connected to the second dimming film. The optical film layer can reflect and transmit light incident on both the first side and the second side.

2. The optical film assembly according to claim 1, characterized in that, When the first dimming film is in a bright state and the second dimming film is in a dark state, the light intensity of the light passing through the first dimming film and incident on the first surface is greater than the light intensity of the light passing through the second dimming film and incident on the second surface, and the optical film group is in a reflective state.

3. The optical film assembly according to claim 1, characterized in that, When the first dimming film is in a dark state and the second dimming film is in a bright state, the light intensity of the light passing through the first dimming film and incident on the first surface is less than the light intensity of the light incident on the second surface from the second dimming film, and the optical film assembly is in a light-blocking state.

4. The optical film assembly according to claim 1, characterized in that, When the first dimming film is in a bright state and the second dimming film is in a bright state, the optical film group is in a transmission state.

5. The optical film assembly according to any one of claims 2 to 4, characterized in that, When the first dimming film is in a bright state, its transmittance is greater than 60%; when the first dimming film is in a dark state, its transmittance is less than 35%; and / or When the second dimming film is in a bright state, the light transmittance of the second dimming film is greater than 60%, and when the second dimming film is in a dark state, the light transmittance of the second dimming film is less than 35%.

6. The optical film assembly according to any one of claims 1 to 5, characterized in that, The optical film is a semi-transparent and semi-reflective film or a reflective polarizing film.

7. The optical film assembly according to any one of claims 1 to 6, characterized in that, The material of the first base layer includes at least one of glass and polymer materials, and / or the material of the second base layer includes at least one of glass and polymer materials.

8. An optical film assembly, characterized in that, include: The first layer is translucent; The second layer is translucent and is spaced apart from the first layer; as well as An electroluminescent mirror film is located between a first substrate and a second substrate. The electroluminescent mirror film includes a first electrode film, a second electrode film, and an electrolyte. The first electrode film and the second electrode film are disposed opposite to each other. The first electrode film is connected to the first substrate, and the second electrode film is connected to the second substrate. The electrolyte is contained between the first electrode film and the second electrode film. The first electrode film has a first surface facing the second electrode film, and the second electrode film has a second surface facing the first electrode film. The first surface is rougher than the second surface.

9. The optical film assembly according to claim 8, characterized in that, The first surface has multiple protrusions or multiple grooves, and the second surface is a plane or a curved surface.

10. The optical film assembly according to claim 8 or 9, characterized in that, The electrolyte is a silver ion solution. When a voltage is applied between the first electrode film and the second electrode film, the electrolyte can deposit a silver layer on the first surface or the second surface.

11. The optical film assembly according to any one of claims 7 to 10, characterized in that, When there is a first voltage between the first electrode film and the second electrode film, a first metal layer is deposited on the first surface, the reflectivity of the electro-mirror film is less than 15%, and the optical film group is in a light-shielding state.

12. The optical film assembly according to claim 11, characterized in that, When there is a second voltage between the first electrode film and the second electrode film, the value of the second voltage is less than the value of the first voltage, causing a third metal layer to be deposited on the first surface. The transmittance of the third metal layer is greater than that of the first metal layer, and the optical film group is in a semi-transparent state.

13. The optical film assembly according to any one of claims 7 to 12, characterized in that, When a third voltage is applied between the first electrode film and the second electrode film, a second metal layer is deposited on the second surface, the reflectivity of the electro-mirror film is greater than 40%, and the optical film group is in a reflective state.

14. The optical film assembly according to any one of claims 7 to 13, characterized in that, When neither the first electrode film nor the second electrode film has a metal layer deposited, the optical film assembly is in a transparent state.

15. A sunshade, characterized in that, It includes a package and an optical film assembly as described in any one of claims 1 to 14, wherein the package is fixedly connected to the optical film assembly.

16. The sunshade according to claim 15, characterized in that, The optical film assembly has a fixing part and a main body part arranged side by side. The fixing part is fixedly connected to the main body part. The encapsulation component covers the fixing part, and the main body part is exposed relative to the encapsulation component.

17. The sunshade according to claim 15 or 16, characterized in that, The sun shade also includes a light-emitting element, which is used to emit light toward one side of the sun shade.

18. A transparent window, characterized in that, Includes the optical film assembly as described in any one of claims 1 to 14.

19. A means of transportation, characterized in that, Includes a sunshade as described in any one of claims 15 to 17, or includes a transparent window as described in claim 18.

20. A light control system, characterized in that, The device includes a controller and an optical film assembly as described in any one of claims 1 to 14, wherein the controller is used to adjust the transmittance of a first dimming film and a second dimming film of the optical film assembly.

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