CN115343846A

CN115343846A - Imaging window manufacturing method, imaging window, imaging system and vehicle

Info

Publication number: CN115343846A
Application number: CN202110462056.9A
Authority: CN
Inventors: 吴慧军; 徐俊峰; 方涛
Original assignee: Futurus Technology Co Ltd
Current assignee: Futurus Technology Co Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2022-11-15

Abstract

The present disclosure provides a manufacturing method of an imaging window, an imaging system and a vehicle, wherein the manufacturing method comprises: forming an initial adhesive layer; the initial adhesive layer is clamped between the first transparent plate and the second transparent plate; and forming an initial adhesive layer into an adhesive layer including a transmittance reducing portion to form an imaging window including a first transparent plate, an adhesive layer, and a second transparent plate, wherein the adhesive layer connects the first transparent plate and the second transparent plate together; wherein the initial adhesive layer comprises the reduced-transmission portion or comprises a material for forming the reduced-transmission portion. In this disclosure, the formation of image light that imaging system's image source was launched can be reflected in order to form the virtual image by imaging system's formation of image window, and sets up through the formation of image region that is used for reflecting formation of image light at imaging window and subtracts the portion of passing through, can promote imaging system's formation of image contrast, consequently this disclosed embodiment can realize better formation of image effect.

Description

Imaging window manufacturing method, imaging window, imaging system and vehicle

Technical Field

The disclosure relates to a manufacturing method of an imaging window, the imaging window, an imaging system and a vehicle.

Background

In recent years, with the continuous development of technologies such as vehicle intellectualization, vehicle networking, automatic driving and the like, information received by a mobile vehicle-mounted terminal and various expanded applications emerge endlessly, so that the demand of people for communicating a plurality of display screens in a vehicle to flexibly display various information is increasing, but the sight of a driver is easy to deviate during relevant operations, which results in potential safety risks.

The head-up display (also called head-up display (HUD)) technology can avoid the distraction caused by the driver looking at the instrument panel or other display screens in a head-down mode in the driving process so as to improve the driving safety factor, and meanwhile, better driving experience can be brought, so that the head-up display technology also receives more and more attention in recent years, and the head-up display technology has great application potential in the aspect of vehicle-mounted intelligent display.

Disclosure of Invention

The embodiment of the disclosure provides a manufacturing method of an imaging window, the imaging window (also called as a windshield), an imaging system and a vehicle.

In one aspect, at least one embodiment of the present disclosure provides a method for manufacturing an imaging window, including: forming an initial adhesive layer; the initial adhesive layer is clamped between the first transparent plate and the second transparent plate; and forming the initial adhesive layer into an adhesive layer including a transmittance reducing portion to form the imaging window including the first transparent panel, the adhesive layer, and the second transparent panel, wherein the adhesive layer connects the first transparent panel and the second transparent panel together; wherein the initial adhesive layer comprises the reduced-permeability portion or a material for forming the reduced-permeability portion.

In some examples, the forming the initial adhesive layer into an adhesive layer including the transmittance feature includes: curing the initial adhesive layer between the first transparent board and the second transparent board to form the adhesive layer.

In some examples, the initial adhesive layer is heated prior to curing the initial adhesive layer.

In some examples, the first transparent board and the second transparent board are pressed together during the curing of the initial adhesive layer.

In some examples, the forming an initial adhesive layer includes: forming the penetration reducing part on the surface of the initial adhesive layer; and/or forming the initial adhesive layer with a material added with a permeation reducing material.

In some examples, forming the initial adhesive layer includes: forming the penetration reducing part on the surface of the initial adhesive layer by means of attaching or coating; and/or the penetration reducing material is added to the material for forming the initial adhesive layer by means of doping.

In some examples, the imaging window comprises a first region and a second region located on a side of the first region proximate to an edge of the imaging window, the second region comprising a first reduced-transmission region in which the reduced-transmission region is located; in the vertical direction, the size of the penetration reducing part is smaller than that of the first area; the first region belongs to an observation region of the imaging window, and the first reduced-transmittance region in the second region is located outside the observation region or belongs to the observation region.

In some examples, one or more of the reduced-permeability portions are disposed in the first region, the reduced-permeability portion being a continuous reduced-permeability portion.

In some examples, the second region further comprises a second reduced-transmission region located on a side of the first reduced-transmission region remote from the first region; in the vertical direction, the size of the second reduced-permeability region is smaller than the size of the reduced-permeability part; the second reduced-transmission region includes a discrete plurality of shading spots.

In some examples, the first and second reduced-transmission regions are directly connected and/or at least part of the material of the shading spot is the same as at least part of the material of the reduced-transmission portion and is provided in the same layer.

In some examples, the reduced-transmission portion includes a colored layer; and/or the transmission reducing portion includes a reflecting portion whose surface facing the first transparent plate is a reflecting surface, the first transparent plate being concave to the imaging window.

In some examples, the reflective portion includes a metal film that is opaque to light, and a surface of the reflective portion facing the second transparent plate is a light absorbing surface and/or a diffusive reflective surface.

In some examples, further comprising: and forming a reflection film laminated with the transmittance reducing part, wherein the reflection film is formed on one side of the transmittance reducing part of the adhesive layer facing the first transparent plate, the surface of the reflection film facing the first transparent plate is a reflection surface, and the first transparent plate is recessed relative to the imaging window.

In some examples, the material of the metal film includes at least one of aluminum, chromium, and silver.

In some examples, at least a portion of the adhesive layer is a wedge-shaped film located between the first transparent board and the second transparent board.

In some examples, the imaging window includes opposing upper and lower edges, and the obscuration region is located on a side of the center of the viewing window proximate the lower edge.

In some examples, the imaging window includes a viewing region, the reduced-transmission region being located outside the viewing region.

In yet another aspect, at least one embodiment of the present disclosure also provides an imaging window, including: a first transparent plate; a second transparent plate; and the adhesive layer is clamped between the first transparent plate and the second transparent plate and is connected with the first transparent plate and the second transparent plate, wherein the adhesive layer comprises a transmittance reducing part.

In yet another aspect, at least one embodiment of the present disclosure also provides an imaging system, including: the imaging window is manufactured by the manufacturing method or is the imaging window; and an image source configured to emit imaging light, wherein the imaging light emitted by the image source propagates to an eye box region of the imaging system after being reflected by the imaging window, and the transmittance reducing part is arranged in an imaging region where the imaging light is reflected on the imaging window.

In some examples, the imaging window comprises a windshield of a vehicle.

In some examples, the imaging window further includes a first sub-imaging region and a second sub-imaging region located outside the first sub-imaging region, the reduced-transmittance portion being located in the first sub-imaging region and outside the second sub-imaging region.

In some embodiments, the first sub-imaging region is located below the second sub-imaging region; in the vertical direction, the maximum size of the first sub-imaging area is smaller than the maximum size of the second sub-imaging area.

In some examples, the light-transmitting portion is configured to reflect light corresponding to at least one imaged content in an imaged picture displayed by the imaged light.

In some examples, a size of the first sub-imaging region is not smaller than a size of at least one imaging content displayed in the first sub-imaging region in a horizontal direction, and a size of the first sub-imaging region is not smaller than H/sin θ in a vertical direction; where H is a size of at least one imaged content in a vertical direction, and θ is an inclination angle of the first sub-imaging area with respect to a horizontal direction.

In another aspect, at least one embodiment of the present disclosure further provides a vehicle including the imaging window manufactured by the above manufacturing method or the above imaging window or the above imaging system.

In the embodiment of the present disclosure, imaging light emitted by an image source of an imaging system may be reflected by an imaging window (for example, a windshield of a vehicle) of the imaging system to form a virtual image, and an imaging contrast of the imaging system may be improved by providing a transmittance reducing portion in an imaging region of the imaging window for reflecting the imaging light, so that a better imaging effect may be achieved by the embodiment of the present disclosure.

In some embodiments, an adhesive layer including a transmittance reducing portion is formed using an initial adhesive layer, and the first transparent board and the second transparent board are connected by the adhesive layer to fabricate the imaging window, which is simple and low-cost in a fabrication method.

In order to make the aforementioned objects, features and advantages of the present disclosure more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 illustrates a schematic structural view of an imaging window provided by at least one embodiment of the present disclosure;

fig. 2 illustrates a flow chart of a method of fabricating an imaging window provided by at least one embodiment of the present disclosure;

3-4 illustrate a schematic structural view of an imaging window provided by at least one embodiment of the present disclosure;

FIG. 5 shows an enlarged view at A in FIG. 4;

fig. 6 shows an enlarged view at B in fig. 4;

fig. 7 illustrates a schematic structural view of an imaging window provided by at least one embodiment of the present disclosure;

8-10 illustrate a flow chart of a method of making an imaging window provided by at least one embodiment of the present disclosure;

fig. 11 illustrates a schematic structural view of an imaging window provided by at least one embodiment of the present disclosure;

FIG. 12 illustrates a flow chart for forming a reflective film in at least one embodiment of the present disclosure;

FIG. 13 illustrates a schematic structural view of a reflective film in at least one embodiment of the present disclosure;

FIG. 14 shows a schematic structural view of a wedge-shaped membrane in at least one embodiment of the present disclosure;

fig. 15 illustrates a schematic structural view of an imaging window provided by at least one embodiment of the present disclosure;

16-19 illustrate a schematic structural view of an imaging system provided by at least one embodiment of the present disclosure;

fig. 20 illustrates a schematic structural view of an imaging window in an imaging system provided by at least one embodiment of the present disclosure;

fig. 21 is a schematic diagram illustrating a dimensional relationship between a first sub-imaging region and imaging content in at least one embodiment of the present disclosure.

Description of reference numerals: 100. an imaging window; 101. a first transparent plate; 102. an adhesive layer; 1021. a penetration reducing portion; 10211. a reflective film; 103. a second transparent plate; 104. a first region; 105. a second region; 1051. a first reduced-permeability region; 1052. a second reduced-permeability region; 10521. shading spots; 10522. a light shielding portion; 106. a wedge-shaped membrane; 107. a first sub-imaging region; 108. a second sub-imaging region; 109. an upper edge; 110. a lower edge; 200. a head-up display device; 201. an image source; 202. a plane mirror; 203. a curved mirror; 204. and a light outlet.

Detailed Description

The embodiments of the present disclosure will be further described with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. The disclosure may be carried into practice or applied to various other specific embodiments, and various modifications and changes may be made in the details within the description and the drawings without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the components related to the present disclosure are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, number and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complex.

It should be noted that for simplicity and clarity of description, the following describes several representative embodiments and illustrates aspects of the present disclosure. Numerous details of the embodiments are set forth merely to aid in understanding the aspects of the present disclosure. It will be apparent, however, that the embodiments of the present disclosure may be practiced without limitation to these specific details. Some embodiments are not described in detail, but rather are merely provided as a framework to avoid unnecessarily obscuring aspects of the disclosure. Hereinafter, "including" means "including but not limited to", "according to … …" means "according to at least … …, but not according to only … …". "first," "second," and the like are used merely as references to features and are not intended to limit the features in any way, such as in any order. In view of the language convention of chinese, the following description, when it does not specifically state the number of a component, means that the component may be one or more, or may be understood as at least one.

The inventors of the present disclosure have found in their research that, in some cases, the imaging system is not well imaged, which results in poor use by a user (e.g., a driver and/or passenger or others).

In order to improve the imaging effect and improve the user experience, in one aspect, referring to fig. 1, at least one embodiment of the present disclosure provides an imaging window 100, where the imaging window 100 includes a transparent base material having a first transparent board 101 and a second transparent board 103, an adhesive layer 102 is interposed between the first transparent board 101 and the second transparent board 103 for connecting the first transparent board 101 and the second transparent board 103 together, and the adhesive layer 102 includes a transmittance reducing portion 1021. For example, the transmittance reducing part 1021 may include a colored layer and/or a reflective part.

For example, the material of the first transparent board 101 and/or the second transparent board 103 may be glass, resin, or other materials.

For example, the transmittance reducing part 1021 can be understood as a structure that reduces the transmittance of light incident thereon. For example, the transmittance reducing portion 1021 is a single-layer film or a multi-layer film structure.

In another aspect, referring to fig. 2, at least one embodiment of the present disclosure provides a method for manufacturing an imaging window 100 (e.g., the imaging window 100 provided in any of the above embodiments), which may be used to manufacture the imaging window 100 provided in the above embodiments, and the method includes: forming an initial adhesive layer 102; an initial adhesive layer 102 is sandwiched between a first transparent board 101 and a second transparent board 103; and forming the initial adhesive layer 102 into an adhesive layer 102 including a reduced transparency portion 1021 to form an imaging window 100 including a first transparent board 101, the adhesive layer 102, and a second transparent board 103, wherein the adhesive layer 102 connects the first transparent board 101 and the second transparent board 103 together.

For example, in this method of manufacture, the initial adhesive layer 102 includes the reduced-permeability portion 1021 such that the adhesive layer 102 includes the reduced-permeability portion 1021, or the initial adhesive layer 102 includes a material used to form the reduced-permeability portion 1021.

In the disclosed embodiment, the adhesive layer 102 including the reduced-transmittance portion 1021 is formed using the initial adhesive layer 102 including the reduced-transmittance portion 1021 or including a material for forming the reduced-transmittance portion 1021, and the first transparent board 101 and the second transparent board 103 are connected by the adhesive layer 102 to fabricate the imaging window 100, which is simple and low-cost in fabrication method.

When the imaging window 100 is used in an imaging system, the imaging window 100 is configured to reflect imaging light rays emitted by an image source 201 of the imaging system to cause the reflected imaging light rays to form a virtual image, thereby achieving imaging.

In at least one embodiment of the present disclosure, by providing the transmittance reducing portion 1021 in the imaging region of the imaging window 100 for reflecting the imaging light, that is, by providing the region of the imaging window 100 where the transmittance reducing portion 1021 is located with a lower light transmittance than the region of the imaging window 100 adjacent to the transmittance reducing portion 1021 (for example, the first region 104 mentioned below), the imaging contrast can be improved, and thus the embodiment of the present disclosure can achieve a better imaging effect.

In some embodiments, imaging window 100 is a windshield of a vehicle, for example, the vehicle may include, but is not limited to, a land vehicle (e.g., a vehicle, etc.), an air vehicle such as an aircraft, a water vehicle (e.g., a boat or submarine, etc.), and the like. For example, imaging window 100 may be at least one or more of a front windshield (e.g., front windshield), a rear window (e.g., rear windshield), or a side window (e.g., side windshield) of a vehicle, among others.

In some embodiments, referring to fig. 3, the imaging window 100 further comprises a first region 104 and a second region 105 located on a side of the first region 104 close to an edge of the imaging window 100, e.g. the second region 105 may be located between the first region 104 and the edge of the imaging window 100, i.e. the second region 105 may be located at a periphery of the first region 104, e.g. the second region 105 may comprise portions located at one or more of an upper side, a lower side, a left side and a right side of the first region 104. Alternatively, the first region 104 is located between the second region 105 and the edge of the imaging window 100, and fig. 3 schematically illustrates an example in which the second region 105 includes portions located respectively on the upper side, the lower side, the left side, and the right side of the first region 104. In some embodiments, the imaging window 100 is a front windshield of a vehicle, for example, in which case the second region 105 includes at least a portion located on an underside of the first region 104 (the underside being with respect to the user); or the imaging window 100 is a side or rear window of a vehicle, for example in which case the first region 104 is located between the second region 105 and an edge of the imaging window 100.

In some embodiments, referring to FIG. 4, the second region 105 includes a first reduced-permeability region 1051, the adhesive layer 102 includes a reduced-permeability portion 1021 that is located within the first reduced-permeability region 1051, and the first reduced-permeability region 1051 is the region where the reduced-permeability portion 1021 is located, e.g., the second region 105 is the region where the first reduced-permeability region 1051 is located; alternatively, the second region 105 also includes regions outside of the first reduced-permeability region 1051.

In at least one embodiment of the present disclosure, the size of the reduced-transmittance portion 1021 is smaller than the size of the first region 104 in the vertical direction, so that the user can observe the external environment through the imaging window 100.

For example, the vertical direction may be understood as a vertical direction of the imaging window 100 in a use state, and the horizontal direction may be understood as a horizontal direction of the imaging window 100 in a use state.

For example, the first region 104 belongs to the observation region of the imaging window 100, and the first reduced-transmission region 1051 in the second region 105 may be located outside the observation region or may also belong to the observation region.

For example, the observation region may be a visible region in which a user can observe the external environment, and the second region 105 is a light-shielding region having a light transmittance lower than that of the first region 104.

In some embodiments, the reduced-transparency portion 1021 is outside of the viewing area; alternatively, in some embodiments, at least a portion of the transmittance reducing portion 1021 is light transmissive and is located in the viewing area. For example, the light transmittance of the reduced-transmittance portion 1021 is weaker than the light transmittance of a portion of the imaging window 100 adjacent to the portion where the reduced-transmittance portion 1021 is located. This can improve the contrast and allow the user to observe the outside through the transflective portion 1021. The present disclosed embodiment does not limit the transparency of the at least part of the transmittance reduction part 1021 as long as the user can observe the outside through the at least part of the transmittance reduction part 1021 in the observation area.

In some embodiments, the transmittance reducing part 1021 may be located at a lower side or an upper side of the observation region, which may not only improve the imaging effect by the transmittance reducing part 1021 but also facilitate the user to observe the outside.

For example, the imaging window 100 includes one or more reduced-transparency portions 1021, each reduced-transparency portion 1021 being a continuous reduced-transparency portion 1021.

For example, as shown in fig. 4, the second region 105 further includes a second reduced-permeability region 1052 located on a side of the first reduced-permeability region 1051 away from the first region 104, the reduced-permeability section 1021 being at least partially located outside the second reduced-permeability region 1052; in the vertical direction, the size of the second reduced-permeability area 1052 is smaller than the size of the reduced-permeability section 1021.

In some embodiments, the second reduced-transmission region 1052 is further from the center of the imaging window 100 than the first reduced-transmission region 1051.

In some embodiments, where the imaging window 100 is a windshield of a vehicle, the second reduced-transmittance region 1052 is a portion of an original light-blocking region of the windshield. The light-shielding region is, for example, an annular structure surrounding the observation region, and the second transmittance-reduced region 1052 is a portion of the light-shielding region located on one side of the observation region. For example, the second transmittance reduction region 1052 is a portion of the light shielding region located on the lower side or the upper side of the observation region.

For example, as shown in FIG. 5, the second reduced-transmission region 1052 includes a discrete plurality of blackout spots 10521.

For example, as shown in fig. 6, the second reduced-transmittance region 1052 includes a plurality of discrete light-shielding spots 10521 and a continuous light-shielding portion 10522.

For example, the discrete plurality of light-blocking spots 10521 included in the second reduced-permeability region 1052 can include at least one or more of circles, squares, and irregular shapes. The shape of the light-shielding spot 10521 is not limited in the embodiments of the present disclosure.

Fig. 4 to 6 illustrate the example in which the light shielding regions of the same imaging window 100 have different light shielding structures at different positions. In other embodiments, the light-shielding region of the same imaging window 100 may include only the light-shielding spots 10521 as shown in fig. 5, or only the light-shielding spots 10521 and the continuous light-shielding portions 10522 as shown in fig. 6, or the light-shielding region may also adopt other light-shielding structures.

In at least one embodiment of the present disclosure, the plurality or plurality may be understood to include at least two or more.

For example, the first reduced-permeability region 1051 and the second reduced-permeability region 1052 are directly connected and/or at least a portion of the material of the shading spot 10521 is the same as and layered with at least a portion of the material of the reduced-permeability section 1021. The first and second reduced-transmission regions are directly connected, so that the same imaging content can be displayed through the first and second reduced-transmission regions, thereby being beneficial to reducing the size of the first reduced-transmission region 1051. At least part of the materials are the same and are arranged in the same layer, so that on one hand, the production difficulty can be reduced, the production efficiency can be improved, and on the other hand, at least part of the shading spot 10521 and at least part of the light-transmitting part 1021 can be formed through the same process, so that the steps of the manufacturing process are saved, and the production cost is reduced.

For example, when the reduced-transmission part 1021 is a colored layer, the discrete plurality of light-shielding spots 10521 included in the second reduced-transmission region 1052 may be provided in the same layer of the same material as the colored layer. For example, the shading spot 10521 may be black. The black shading spot 10521 has a high heat absorption rate, and when the temperature of the external environment is high, the shading spot 10521 can rapidly absorb heat, store the heat in different discrete shading spots 10521, and uniformly transfer the stored heat to the imaging window 100, so as to prevent the imaging window 100, such as a windshield, from being cracked due to uneven heating in some cases.

For example, the transition arrangement in which the smaller the area of the light-shielding spot 10521 closer to the center of the imaging window 100, and correspondingly the larger the size of the light-shielding spot 10521 farther from the center of the imaging window 100, among the discrete light-shielding spots 10521 included in the second reduced-transmittance region 1052 can buffer the stress caused by thermal expansion and contraction, change the speed of heat transfer, and slowly homogenize the heat applied to the imaging window 100, such as a windshield, and reduce the risk of the windshield bursting.

In some examples, the adhesive layer 102 includes a plurality of reduced-permeability sections 1021 arranged at intervals. For example, in the example of fig. 7, the plurality of reduced-permeability sections 1021 may be arranged in order along the horizontal direction of the first reduced-permeability region 1051. In other examples, the plurality of reduced-permeability portions 1021 may be arranged in other directions as well.

For example, the initial adhesive layer 102 may be a material that has good transparency and can form the adhesive layer 102 for connecting the first and second transparent plates. For example, the material of the initial adhesive layer 102 may be PVB (polyvinyl butyral Ding Quanzhi) material or EVA (ethylene vinyl acetate) material, or other materials.

For example, referring to fig. 8, forming the initial adhesive layer 102 includes: forming a reduced-permeability part 1021 on the surface of the initial adhesive layer 102; and/or forming the initial adhesive layer 102 with a material added with a permeation reducing material.

For example, in the case where the penetration reducing part 1021 is formed on the surface of the initial adhesive layer 102, the following may be included: the reduced-permeability part 1021 is formed on the surface of the initial adhesive layer 102 by means of adhesion or coating.

For example, attachment may include one or more of adhesion, adsorption, and attachment.

For example, in the case of forming the initial adhesive layer 102 using a material to which a permeation reducing material is added, the following may be included: the permeation reducing material is added to the material for forming the initial adhesive layer 102 (hereinafter referred to as initial adhesive material) by means of doping.

For example, a permeability reducing material may be mixed into the initial tacky material. Embodiments of the present disclosure do not limit the manner in which the permeability reducing material is incorporated into the material used to form the initial adhesive material.

For example, the reduced-permeability material may include an inorganic reduced-permeability material and/or an organic reduced-permeability material.

For example, the transmittance reducing part 1021 may include a colored layer and/or a reflective part.

For example, when the transmittance reducing part 1021 includes a colored layer, the colored layer may have a structure having light absorption characteristics, which are stronger than those of the portion of the imaging window 100 adjacent to the portion where the colored layer is located.

For example, the colored layer may include at least one or more of a black layer, a green layer, a red layer, or a yellow layer.

For example, the colored layer may be formed by coating. For example, a coloring material may be coated on the initial adhesive layer 102 to form a corresponding colored layer; alternatively, after coating the coloring material layer on the initial adhesive layer 102, curing the initial adhesive layer 102 and the coloring material layer to obtain the adhesive layer 102 including the coloring layer may reduce the manufacturing process. The manner of forming the colored layer by coating includes, but is not limited to, these enumerated examples.

For example, when the transmittance reducing part 1021 includes a reflection part, a surface of the reflection part facing the first transparent plate 101 is a reflection surface. For example, the first transparent plate 101 is concave for the imaging window 100. By providing the reflection portion, the reflectance of the portion of the imaging window 100 provided with the reflection portion with respect to the light incident from the side where the first transparent plate 101 is located can be made stronger than the reflectance of the portion of the imaging window 100 adjacent to the portion where the reflection portion is located with respect to the light, thereby improving the imaging effect.

For example, the reflection portion includes an opaque (substantially opaque) metal film. For example, the metal film is an aluminum film, a chromium film, a silver film, an iron film, a copper film, or the like.

For example, a surface of the reflection part facing the second transparent plate 103 may be a light absorbing surface and/or a diffuse reflection surface to prevent glare from external light irradiating the reflection part in some cases. In some embodiments, the surface is a surface of a metal film included in the reflective portion. For example, the surface is formed by roughening treatment or other treatment of the metal film. In other embodiments, the reflective portion comprises, for example, a metal film and a film attached to the metal film, and the surface of the reflective portion facing the second transparent plate 103 is the surface of the film facing away from the metal film.

For example, referring to fig. 9, forming the initial adhesive layer 102 to include the reduced-transmittance portion 1021 includes: the initial adhesive layer 102 between the first transparent board 101 and the second transparent board 103 is cured to form the adhesive layer 102. For example, the curing method may be selected according to the material of the initial adhesive layer 102. For example, curing means include, but are not limited to, natural curing, thermal curing, or radiation curing, among others. The disclosed embodiments do not limit the curing means.

For example, the adhesive layer 102 may be formed by coating an initial adhesive material on one of the first transparent board 101 and the second transparent board 103 to obtain the initial adhesive layer 102, laminating the two transparent boards so that the initial adhesive layer 102 is interposed between the first transparent board 101 and the second transparent board 103, and curing the laminated layers.

For example, the manufacturing method provided by at least one embodiment of the present disclosure further includes: the initial adhesive layer 102 may be subjected to a heat treatment before the initial adhesive layer 102 is cured. After the initial adhesive layer 102 is heated, the initial adhesive layer 102 can be adhered to the first transparent board 101 and the second transparent board 103 more tightly, so that bubbles in the first transparent board 101 and the second transparent board 103 are reduced, and therefore the adhering effect between the first transparent board 101 and the second transparent board 103 can be further improved by a mode of curing after heating.

For example, referring to fig. 10, a manufacturing method according to at least one embodiment of the present disclosure further includes: in the process of curing the initial adhesive layer 102, the first transparent board 101 and the second transparent board 103 are pressed.

For example, in the process of curing, the first transparent board 101 and the second transparent board 103 may be continuously pressed by a pressing device, so as to reduce bubbles between the first transparent board 101 and the second transparent board 103 and improve the corresponding attaching effect.

For example, referring to fig. 11, the first transparent board 101 is concave for the imaging window 100, and the second transparent board 103 is convex for the imaging window 100. For example, the imaging window 100 may be a windscreen of a vehicle, the first transparent plate 101 being located on an inner side and the second transparent plate 103 being located on an outer side with respect to an external environment and a cabin of the vehicle, such that a second outer surface of the imaging window 100 on the external environment side is convex and a first outer surface of the imaging window 100 on the cabin side of the vehicle is concave.

For example, where the imaging window 100 is a windshield of a vehicle, employing a curved imaging window 100 (i.e., the imaging window 100 includes the aforementioned protrusions and depressions) may be advantageous to reduce the drag experienced by the vehicle during travel. On the other hand, the curved imaging window 100 may serve to enlarge an imaging screen displayed by the imaging light.

For example, referring to fig. 12, a manufacturing method according to at least one embodiment of the present disclosure further includes: a reflective film 10211 is formed to be laminated with the transmittance reducing section 1021, wherein the reflective film 10211 is formed on the side of the transmittance reducing section 1021 of the adhesive layer 102 facing the first transparent plate 101, the surface of the reflective film 10211 facing the first transparent plate 101 is a reflective surface, and the first transparent plate 101 is recessed with respect to the imaging window 100.

For example, the reflective film 10211 may be formed between the first transparent plate 101 and the second transparent plate 103 or on a side of the first transparent plate 101 away from the second transparent plate 103, and the reflective film 10211 is stacked with the transmittance reducing part 1021 and is located on a side of the transmittance reducing part 1021 facing the first transparent plate 101.

For example, referring to fig. 13, when the imaging window 100 is applied to an imaging system, the reflective film 10211 is configured to reflect imaging light emitted from the image source 201 included in the imaging system, so as to improve the brightness of an image formed by the imaging light as a whole, and further improve the imaging effect. Also, the transmittance reducing part 1021 can prevent external light from being incident on the reflective film 10211, thereby preventing glare.

For example, the reflective film 10211 can include a metal film, and the metal film is opaque. For example, the imaging light emitted by the image source 201 of the imaging system is incident on the metal film, and the reflection efficiency of the imaging light can be improved through the high reflectivity of the metal film, so that the imaging effect is improved.

Because aluminum has high reflectivity, in some embodiments of the present disclosure, the reflectivity of the imaging light can be effectively improved by using the metal film made of the material including aluminum, so as to improve the brightness of the imaging picture displayed by the imaging light, thereby effectively improving the imaging effect; in addition, the cost of the aluminum is low, and the corresponding production cost can be reduced.

For example, the material of the metal film may include, but is not limited to, at least one or more of aluminum, silver, and chromium. For example, the metal film may have a single film structure, a stacked film structure including at least a part of the plurality of materials, or an alloy structure including the plurality of materials.

For example, the metal film may be formed on the transparent substrate of the imaging window 100 by plating.

For example, opaque is understood to mean that light incident on the metal film is substantially not transmitted through the metal film, which has a low transmission of light. For example, at least part of the adhesive layer 102 is a wedge-shaped film 106 located between the first transparent board 101 and the second transparent board 103. See, for example, fig. 14. By providing the wedge-shaped film 106, ghost images generated in some cases can be eliminated.

For example, in the example of fig. 14, the wedge film 106 is located between the first transparent plate 101 and the second transparent plate 103, and with this arrangement, it is possible to overlap an imaged picture displayed by the imaging light reflected by the first outer surface and an imaged picture displayed by the imaging light reflected by the reflective film 10211 into one picture to realize the function of ghost suppression.

For example, referring to fig. 14, the wedge-shaped film 106 has two surfaces that are opposite and have a non-zero included angle, so that the wedge-shaped film 106 has a thin end and a thick end, and the angle between the two surfaces of the wedge-shaped film 106 can be set according to actual needs, which is not limited by at least one embodiment of the present disclosure. In yet another aspect, at least one embodiment of the present disclosure provides an imaging system comprising an imaging window 100 and an image source 201. For example, the imaging window 100 is the imaging window 100 provided in any of the above embodiments or the imaging window 100 manufactured by the method provided in any of the above embodiments. For example, referring to fig. 16, the imaging system includes an image source 201 and an imaging window 100, the imaging window 100 includes an imaging area, a transmittance reducing portion 1021 is provided in the imaging area where imaging light is emitted on the imaging window 100, the image source 201 is configured to emit the imaging light to the imaging area of the imaging window 100, and the imaging light is reflected by the imaging area of the imaging window 100 and then propagates to an eye box area of the imaging system, so that a user can see an imaging picture (which is, for example, a virtual image) through the imaging area.

For example, the imaging light rays, after being reflected by the imaging region of the imaging window 100, may travel directly to the eye box region of the imaging system; alternatively, the imaging light may travel to the eye box region of the imaging system indirectly after being reflected by the imaging region of the imaging window 100, for example, after the imaging light is reflected by the imaging region of the imaging window 100, the reflected imaging light may travel to the eye box region of the imaging system through other optics (e.g., mirrors and/or beam splitters).

For example, the eye box region refers to a region where the eyes of an observer (e.g., a driver, passenger, and/or other user) can observe an image formed by the imaging system, and the observer's eyes can see the image formed by the imaging system at different positions within the eye box region.

For example, the image source 201 may be a display in the heads-up display device 200.

In some embodiments, heads-up display device 200 may include, but is not limited to, a non-augmented Reality type HUD or an augmented Reality type HUD (i.e., an AR-HUD, such as a normal AR-HUD or a Mixed Reality heads-up display (MR HUD)). In some embodiments, the heads-up display device 200 may include, but is not limited to, a full window HUD (full window HUD may also be referred to as a large-view heads-up display device 200) or a non-full window HUD, which is not limited by at least one embodiment of the present disclosure.

In some embodiments, referring to fig. 17, the head up display device 200 includes: the image display device comprises an image source 201 (also referred to as a light emitting unit), a plane mirror 202 and a curved mirror 203, wherein imaging light emitted by the image source 201 is reflected by the plane mirror 202 and then enters the curved mirror 203, and is emitted from a light outlet 204 of the head-up display device 200 after being reflected by the curved mirror 203, the imaging light emitted by the image source 201 enters an imaging area of the visual imaging window 100 and propagates to an eye box area after being reflected by the imaging area, and a user sees an imaging picture which is a virtual image on one side of the imaging window 100 far away from the eye box area through the imaging area.

In some embodiments, referring to fig. 18, the head up display device 200 includes: the image source 201 (also referred to as a light emitting unit) and the curved mirror 203, imaging light emitted by the image source 201 enters the curved mirror 203, and is emitted from the light outlet 204 of the head-up display device 200 after being reflected by the curved mirror 203, the imaging light emitted by the image source 201 enters an imaging area of the imaging window 100 and propagates to the eye box area after being reflected by the imaging area, and a user sees through the imaging area that an imaging picture as a virtual image is presented at a position on one side of the imaging window 100 far away from the eye box area.

In some embodiments, referring to fig. 19, the head up display device 200 includes: an image source 201 (also referred to as a light emitting unit), imaging light emitted by the image source 201 is incident on an imaging region of the window and propagates to the eye box region after being reflected by the imaging region, and a user sees an imaging picture appearing as a virtual image on a side of the imaging window 100 away from the eye box region through the imaging region.

The image source 201 is an active Light-Emitting dot-matrix screen composed of Light-Emitting point Light sources such as a liquid crystal display, an LED (Light-Emitting Diode), an OLED (Organic Light-Emitting Diode), and a plasma Light-Emitting point; the projection imaging system may also be based on a projection technology such as DLP (Digital Light processing), LCOS (liquid Crystal on Silicon), liquid Crystal, etc., and driven by a Light source such as LED, OLED, laser, fluorescent Light, etc., or a combination thereof, reflected or transmitted by a display panel such as DMD (Digital micro Device), LCOS, LCD, etc., and projected onto a projection screen through a projection lens to form an image; the projection imaging system can also be used for scanning and imaging the laser beam on a screen; also, all the above-mentioned real images or virtual images formed by one or more refraction or reflection of the display can be used as the image source 201.

The structure of the head-up display device 200 provided by the embodiment of the present disclosure includes, but is not limited to, the embodiments shown in fig. 17 to 19. For example, fig. 17 to 19 illustrate the case where the imaging light is reflected by the imaging area and then directly enters the eye box area; in other embodiments, the imaging light may first travel to a predetermined component (e.g., a mirror or a beam splitter, etc.) after being reflected by the imaging region, and then travel to the eye box region. For example, fig. 17 and 18 illustrate an example in which the head-up display device 200 includes a curved mirror 203; in other embodiments, the heads-up display device 200 may not include the curved mirror 203.

For example, the light transmitting section 1021 is provided in at least a part of the imaging region where the imaging light is reflected on the imaging window 100.

In the embodiment of the present disclosure, since the image forming light emitted from the image source 201 of the imaging system is provided with the transmittance reducing portion 1021 in the image forming area where the image forming light is reflected on the image forming window 100, when the external light incident into the cabin of the vehicle reaches the transmittance reducing portion 1021, the transmittance of the external light can be reduced by the transmittance reducing portion 1021, so as to reduce the brightness of the external light reaching at least a part of the image forming area, and improve the image forming contrast of the image forming light.

The inventors of the present application have noted in their research that disposing the region for displaying imaging contents (e.g., meter information and/or navigation information, etc.) of a small size in the lower half of the imaging window 100 does not substantially affect the user's observation of the external environment and has a good imaging effect.

In view of this discovery of the inventors of the present application, in some embodiments, for example, referring to fig. 15, the imaging window 100 includes an upper edge 109 and a lower edge 110 which are opposite to each other, and the transmittance reducing portion 1021 may be disposed at a side of the center of the imaging window 100 close to the lower edge 110 (i.e., the transmittance reducing portion 1021 may be located at a lower half of the imaging window 100), in which case, a position at which the imaging light rays emitted from the image source 201 of the imaging system are reflected on the imaging window 100 is at the side of the center of the imaging window 100 close to the lower edge 110.

The upper edge 109 and the lower edge 110 of the imaging window 100 are in relation to the vertical direction of the imaging system when in operation. For example, the upper edge 109 of the imaging window 100 may be understood as the edge of the imaging window 100 away from the center console of a vehicle (e.g., a vehicle), or may also be understood as the edge of the imaging window 100 near the top of the vehicle; accordingly, the lower edge 110 of the imaging window 100 may be understood as the edge of the imaging window 100 that is near the center console of the vehicle, or may also be understood as the edge of the imaging window 100 that is away from the top of the vehicle.

For example, referring to fig. 15, the imaging region of the imaging window 100 includes a first sub-imaging region 107 and a second sub-imaging region 108 located outside the first sub-imaging region 107, and a transmittance reducing section 1021 (the transmittance reducing section 1021 is not shown in fig. 15) is located in the first sub-imaging region 107 and outside the second sub-imaging region 108.

For example, the second sub-imaging region 108 may be located in the viewing region of the imaging window 100. In this manner, the second sub-imaging region 108 can be used for both imaging and viewing of the external environment by the user.

In some embodiments, the second sub-imaging region 108 is located in the viewing region of the imaging window 100, and the corresponding imaging content of the second sub-imaging system may be associated with the external environment, so the second sub-imaging region 108 may have a larger area; in other embodiments, the second sub-imaging region 108 may also be used to display entertainment information, etc., so the second sub-imaging region 108 may have a larger area to improve the imaging effect and improve the user experience. Therefore, the second sub-imaging region 108 is larger in area than the first sub-imaging region 107, for example. For example, in the vertical direction, the maximum size of the first sub-imaging area 107 is smaller than the maximum size of the second sub-imaging area 108. By such an arrangement, it is beneficial to enable the first sub-imaging area 107 to display smaller-sized or less-sized imaging contents (such as instrument information and/or navigation information), and enable the second sub-imaging area 108 to display larger-sized or more-sized imaging contents, so as to improve the display effect and meet different requirements of users.

For example, in the vertical direction, the maximum size of the first sub-imaging area 107 is smaller than the maximum size of the second sub-imaging area 108.

For example, as shown in fig. 15, the maximum size of the first sub-imaging area 107 may be a size L1 in the vertical direction, and the maximum size of the second sub-imaging area 108 may be a size L2 in the vertical direction.

For example, the imaging content displayed by the second sub-imaging area 108 may be different at different times. For example, at a first time, the size of the imaging content displayed in the second sub-imaging area 108 may be a, at a second time, the size of the imaging content displayed in the second sub-imaging area 108 may be B, and a and B are different, so that the maximum size may be understood as a set of sizes of areas where the imaging content is located at different times, rather than a size occupied by a certain imaging content at a single time.

For example, in a case where the transmittance reducing section 1021 includes the reflective film 10211, the transmittance reducing section 1021 is configured to reflect light corresponding to at least one imaged content in an imaged picture displayed by the imaged light.

In some embodiments, one or more imaged contents may be included in one imaged picture. For example, the at least one imaging content corresponding to the imaging light reflected by the reflective film 10211 may include at least one or more of meter information and navigation information. On the one hand, the display of the meter information and/or the navigation information occupies only a small portion of the imaging area, which both meets the use requirements and facilitates a reduction in the size of the reduced-transmission section 1021 in the first sub-imaging area 107 in the imaging area. On the other hand, when the first sub-imaging area 107 is used for displaying the instrument information and/or the navigation information, the imaging system can avoid distraction caused by the driver looking down at the instrument panel and/or the navigation display screen during driving, so that the driving safety factor can be improved, and better driving experience can be brought.

For example, the meter information may include one or more of vehicle speed information, rotational speed information, fuel quantity information, and autopilot information, and the navigation information may include one or more of a vehicle straight travel indicator, a vehicle turn indicator, a vehicle merge indicator, and turn-by-turn navigation information.

In some embodiments, one reduced-transmission section 1021 may be provided in the first sub-imaging area 107, or a plurality of (i.e., at least two) reduced-transmission sections 1021 for realizing different display functions may be provided in the first sub-imaging area 107. For example, as shown in fig. 20, a plurality of the reduced-transmittance portions 1021 spaced apart from each other may be provided in the first sub-imaging area 107. For example, the plurality of transmittance reducing sections 1021 are arranged in order in the horizontal direction of the first sub imaging area 107.

In some embodiments, the one or more reduced-transmission portions 1021 in the first sub-imaging region 107 include at least one of an emissive layer for reflecting imaging light rays that display left rearview mirror content, a reduced-transmission portion 1021 for reflecting imaging light rays that display right rearview mirror content, and a reduced-transmission portion 1021 for reflecting imaging light rays that display reverse (e.g., reverse) content.

For example, the image source 201 is configured to emit imaging light rays carrying different display information and respectively corresponding to the plurality of reduced-transmittance portions 1021.

For example, the plurality of transmittance reduction parts 1021 corresponding to different display information may be understood as that the imaging light rays carrying different display information may be reflected by the different transmittance reduction parts 1021.

For example, the imaging system further comprises at least one rearview information acquisition device connector connected to the image source 201; the image source 201 is configured to emit imaging light corresponding to the imaging area and carrying at least one type of rearview information according to at least one signal output by the at least one rearview information acquisition device connector, wherein the at least one type of rearview information comprises at least one of vehicle left rearview information, vehicle right rearview information and vehicle rear rearview information.

For example, the imaging system is configured such that the imaging light of at least one type of rear view information is reflected by the transmittance reducing part 1021 in the first sub-imaging area 107 and then propagates to the eye box area of the imaging system.

In some embodiments, the imaging system further includes at least one of a left rear-view information collection device configured to collect at least left rear-view information on a left rear of the vehicle, a right rear-view information collection device configured to collect at least right rear-view information on a right rear of the vehicle, and a rear-view information collection device configured to collect at least reverse information on a reverse of the vehicle, and the rear-view information collection device connector is configured to connect at least one of the left rear-view information collection device, the right rear-view information collection device, and the rear-view information collection device to project imaging light corresponding to information collected by the corresponding information collection device onto the reduced-transmittance part 1021 in the first sub-imaging area 107.

For example, a left perspective subtraction part 1021 and a right perspective subtraction part 1021 are arranged in the first sub-imaging region 107, and the image source 201 is configured to project imaging light corresponding to left rear-view information acquired by the left rear-view information acquisition device onto the left perspective subtraction part 1021 and project imaging light corresponding to right rear-view information acquired by the right rear-view information acquisition device onto the right perspective subtraction part 1021; alternatively, the first sub-imaging region 107 is provided with a left perspective subtraction part 1021, a right perspective subtraction part 1021, and an intermediate perspective subtraction part 1021 between the left perspective subtraction part 1021 and the right perspective subtraction part 1021, and the image source 201 is configured to project the imaging light corresponding to the left rear-view information acquired by the left rear-view information acquisition device onto the left perspective subtraction part 1021, project the imaging light corresponding to the right rear-view information acquired by the right rear-view information acquisition device onto the right perspective subtraction part 1021, and project the imaging light corresponding to the reverse information acquired by the rear-view information acquisition device onto the intermediate perspective subtraction part 1021.

The embodiment of the present disclosure does not limit the positional relationship and the connection relationship of the left rear-view information acquisition device, the right rear-view information acquisition device, and the caudal rear-view information acquisition device. For example, in some embodiments, the left rear view information collecting device, the right rear view information collecting device, and the caudal rear view information collecting device may be implemented by different sensors, respectively, or by the same or two sensors, which may include at least one of an image sensor or a ranging sensor.

For example, in the horizontal direction, the size of the first sub-imaging area 107 is not smaller than the size of at least one imaged content displayed in the first sub-imaging area 107; in the vertical direction, the size of the first sub-imaging area 107 is not smaller than H/sin θ; where H is a size of the at least one imaged content in the vertical direction, and θ is an inclination angle of the first sub-imaging area 107 with respect to the horizontal direction.

For example, referring to fig. 21, the inclination angle of the first sub-imaging region 107 with respect to the horizontal direction is θ, for example, and in the vertical direction, when the size L1 of the first sub-imaging region 107 is the same as the size H of the at least one imaged content displayed in the first sub-imaging region 107, the relationship between the size L1 of the first sub-imaging region 107 and the size H of the at least one imaged content displayed may be: H/L1= sin θ.

In some embodiments, the size L1 of the first sub-imaging region 107 in the vertical direction is not less than H/sin θ, and the size of the first imaging region in the horizontal direction is not less than the size of at least one imaging content displayed in the first sub-imaging region 107, so as to ensure that the first sub-imaging region 107 can display at least one complete imaging content corresponding to the imaging light, so as to improve the imaging effect.

For example, the inclination angle θ of the first sub-imaging area 107 with respect to the horizontal direction may be acute.

For example, in the vertical direction, at least one imaged content in the imaged picture displayed by the imaging light may be inclined, in which case the size of the imaged content in the vertical direction may be understood as the size of the projection of the imaged content in the vertical direction.

For example, the inclination angle θ of the first sub-imaging region 107 with respect to the horizontal direction may be about 30 degrees, the size of at least one imaged content displayed in the first sub-imaging region 107 may be 20cm in the vertical direction, and the size thereof may be 20cm in the horizontal direction, then the size of the first sub-imaging region 107 may be not less than 40cm in the vertical direction, and the size of the first sub-imaging region 107 may be not less than 20cm in the horizontal direction, and in at least one embodiment of the present disclosure, the size of the first sub-imaging region 107 may be set according to actual needs from a row, which is not particularly limited by at least one embodiment of the present disclosure.

For example, the shape of the first sub-imaging region 107 may be a rectangle, a triangle, a polygon, an irregular shape, or the like, and/or the shape of the at least one piece of imaging content may also be a rectangle, a triangle, a polygon, an irregular shape, or the like. In the example of fig. 4, the first sub-imaging region 107 is a quadrangle in shape; embodiments of the present disclosure include, but are not limited to, the example shown in fig. 4.

In another aspect, at least one embodiment of the present disclosure provides a vehicle including the imaging window 100 manufactured according to the above manufacturing method, or the imaging window 100 described above, or the imaging system described above.

The same name structures in embodiments of the imaging window 100, method of making the same, imaging system, and vehicle may be arranged in the same manner.

The above description is only a preferred embodiment of the present disclosure, and it should be noted that: it will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the disclosure, and such modifications and enhancements are intended to be included within the scope of the disclosure.

Claims

1. A method of making an imaging window, comprising:

forming an initial adhesive layer;

the initial adhesive layer is clamped between the first transparent plate and the second transparent plate; and

forming the initial adhesive layer into an adhesive layer including a transmittance reducing portion to form the imaging window including the first transparent panel, the adhesive layer, and the second transparent panel, wherein the adhesive layer connects the first transparent panel and the second transparent panel together;

wherein the initial adhesive layer comprises the reduced-permeability portion or a material for forming the reduced-permeability portion.

2. The method of making as defined in claim 1, wherein said forming the initial adhesive layer into an adhesive layer including the reduced-penetration portion includes:

curing the initial adhesive layer between the first transparent board and the second transparent board to form the adhesive layer.

3. The method of claim 2, wherein the initial adhesive layer is heated prior to curing the initial adhesive layer.

4. The manufacturing method as set forth in claim 2, wherein the first transparent board and the second transparent board are pressed together during the curing of the initial adhesive layer.

5. The method of manufacturing as claimed in claim 1, wherein said forming an initial adhesive layer comprises:

forming the penetration reducing part on the surface of the initial adhesive layer; and/or

The initial adhesive layer is formed using a material to which a permeation reducing material is added.

6. The method of claim 5, wherein forming the initial adhesive layer comprises:

forming the penetration reducing part on the surface of the initial adhesive layer by means of attaching or coating; and/or

The permeability reducing material is added to the material used to form the initial adhesive layer by doping.

7. A method of making as claimed in any one of claims 1 to 6, in which the imaging window comprises a first region and a second region located on a side of the first region adjacent an edge of the imaging window, the second region comprising a first reduced-transmission region in which the reduced-transmission region is located; in the vertical direction, the size of the penetration reducing part is smaller than that of the first area;

the first region belongs to an observation region of the imaging window, and the first reduced-transmittance region in the second region is located outside the observation region or belongs to the observation region.

8. The production method according to claim 7, wherein one or more of the reduced-permeability portions are provided in the first region, and the reduced-permeability portion is a continuous reduced-permeability portion.

9. The method of manufacturing of claim 7, wherein the second region further comprises a second reduced-transmission region located on a side of the first reduced-transmission region remote from the first region; in the vertical direction, the size of the second reduced-permeability region is smaller than the size of the reduced-permeability part; the second reduced-transmission region includes a discrete plurality of shading spots.

10. A method of manufacturing as claimed in claim 9, wherein the first and second reduced transmission regions are directly connected and/or at least part of the material of the shading spot is the same as at least part of the material of the reduced transmission portion and is provided in the same layer.

11. The method of manufacturing of any of claims 1-6, wherein the reduced-transmittance portion comprises a colored layer; and/or

The transmission reduction portion includes a reflection portion whose surface facing the first transparent plate is a reflection surface, the first transparent plate being concave with respect to the imaging window.

12. The production method according to claim 11, wherein the reflection portion includes a metal film that is opaque to light, and a surface of the reflection portion facing the second transparent plate is a light absorbing surface and/or a diffuse reflection surface.

13. The production method according to any one of claims 1 to 6, further comprising:

and forming a reflection film laminated with the transmittance reducing part, wherein the reflection film is formed on one side of the transmittance reducing part of the adhesive layer facing the first transparent plate, the surface of the reflection film facing the first transparent plate is a reflection surface, and the first transparent plate is recessed relative to the imaging window.

14. The method of manufacturing of claim 13, wherein the reflective film comprises a metal film, and the metal film is opaque.

15. The method of claim 14, wherein the metal film comprises at least one of aluminum, chromium, and silver.

16. The production method according to any one of claims 1 to 6, wherein at least part of the adhesive layer is a wedge-shaped film between the first transparent board and the second transparent board.

17. The method of any of claims 1-6, wherein the imaging window includes opposing upper and lower edges, and the reduced-transmission portion is located on a side of a center of the viewing window proximate the lower edge.

18. The method of fabrication of any of claims 1-6, wherein the imaging window includes a viewing region, the reduced-transmission region being located outside the viewing region.

19. An imaging window, comprising:

a first transparent plate;

a second transparent plate; and

the adhesive layer is clamped between the first transparent plate and the second transparent plate and connected with the first transparent plate and the second transparent plate, and comprises a transmittance reducing part.

20. An imaging system, comprising:

an imaging window fabricated using the fabrication method of any one of claims 1-18 or the imaging window of claim 19; and

the image source is configured to emit imaging light rays, wherein the imaging light rays emitted by the image source propagate to an eyebox area of the imaging system after being reflected by the imaging window, and the transmittance reducing part is arranged in an imaging area where the imaging light rays are reflected on the imaging window.

21. The imaging system of claim 20, wherein the imaging window comprises a windshield of a vehicle.

22. A vehicle comprising an imaging window made according to the method of making of any one of claims 1-18 or the imaging window of claim 19 or the imaging system of claim 20 or 21.