Light control glass and vehicle

Abstract

The application relates to a dimming glass and a vehicle. The dimming glass comprises a sunshade dimming area, a transition area and a main view area arranged in sequence along a first direction. The visible light transmittance of the sunshade dimming area gradually increases along the first direction, and the visible light transmittance of the transition area gradually increases along the first direction. The sunshade dimming area has a bright state and a dark state, the maximum visible light transmittance of the sunshade dimming area in the bright state is less than or equal to the minimum visible light transmittance of the transition area, and the maximum visible light transmittance of the transition area is less than or equal to the visible light transmittance of the main view area. When the dimming glass in the application is used as a front windshield, it is not necessary to additionally arrange a sunshade plate, so that the problems of appearance and safety caused by the sunshade plate can be overcome. In addition, by arranging the transition area with gradually changed visible light transmittance, the problem that the color change of the sunshade dimming area and the main view area is too abrupt can be improved, so that the uncomfortable feeling in vision is weakened or eliminated, and the appearance of the dimming glass is also improved.

Description

Technical Field

[0001] This application relates to the field of glass technology, and in particular to a smart glass and a vehicle. Background Technology

[0002] In existing technology, to prevent drivers from being glared by direct sunlight while driving, vehicles are typically equipped with sun visors in front of the driver. The driver can manually adjust the position of the sun visor as needed to block sunlight. However, sun visors are generally opaque panels, and considering driving safety, their area cannot be too large, thus limiting the area they block and taking up interior space, resulting in poor aesthetics. Furthermore, the need for manual adjustment can distract the driver, compromising driving safety.

[0003] To address the aforementioned shortcomings of sun visors, related technologies have proposed a dimming glass for windshields. A sunshade area is positioned at the top of the dimming glass, and an electrochromic color-changing device, such as a liquid crystal display, is installed within this area. When strong external light shines, the transmittance of the sunshade area can be altered by the electrochromic color-changing device to block the glare. However, when the transmittance of the sunshade area is low, the color change between the sunshade area and the main viewing area becomes abrupt, causing visual discomfort and affecting aesthetics. For example, in existing products on the market, the visible light transmittance of the electrochromic dimming area of ​​the windshield sunshade is 2-12% / 1-6%. Even with the lowest visible light transmittance in the dark, glare still occurs. Simultaneously, the difference between the highest visible light transmittance in the bright state and the 70% transmittance of the main viewing area is too large, resulting in an overly abrupt and unsightly appearance. Summary of the Invention

[0004] Based on this, a dimming glass and a vehicle are provided to improve the problem of overly abrupt color changes between the sunshade area and the main field of vision area of ​​the dimming glass.

[0005] An embodiment of the first aspect of this application provides a dimming glass, the dimming glass including a sunshade dimming area, a transition area and a main viewing area arranged sequentially along a first direction; the visible light transmittance of the sunshade dimming area gradually increases along the first direction, the visible light transmittance of the transition area gradually increases along the first direction; the sunshade dimming area has a bright state and a dark state, the maximum visible light transmittance of the sunshade dimming area in the bright state is less than or equal to the minimum visible light transmittance of the transition area, and the maximum visible light transmittance of the transition area is less than or equal to the visible light transmittance of the main viewing area.

[0006] The dimming glass in this embodiment includes a sunshade dimming area, a transition area, and a main viewing area arranged sequentially along a first direction. The sunshade dimming area has a bright state and a dark state. When in the bright state, it blocks light; when exposed to strong sunlight, it switches to the dark state, further enhancing its light-blocking effect, thus providing sun protection for the driver. When the dimming glass in this embodiment is used as a windshield, there is no need for an additional sun visor, overcoming the aesthetic and safety issues associated with using a sun visor. Furthermore, a transition area is provided between the sunshade dimming area and the main viewing area. The visible light transmittance of the transition area gradually increases along the first direction. The maximum visible light transmittance of the sunshade dimming area in the bright state is less than or equal to the minimum visible light transmittance of the transition area, and the maximum visible light transmittance of the transition area is less than or equal to the visible light transmittance of the main viewing area. By setting a transition zone with a gradual change in visible light transmittance, the problem of abrupt color changes in the shading dimming area and the main viewing area can be improved, thereby reducing or eliminating visual discomfort. In addition, it also helps to improve the aesthetics of the dimming glass.

[0007] In some embodiments, the visible light transmittance of the shading dimming area in the bright state is ≥1% and ≤5%, and the visible light transmittance of the shading dimming area in the dark state is ≥0.01% and ≤1%.

[0008] In some embodiments, the minimum visible light transmittance of the transition region is ≥5% and ≤8%.

[0009] In some embodiments, the visible light transmittance of the main field of view is ≥70%, and the maximum visible light transmittance of the transition region is ≥35% and ≤70%.

[0010] In some embodiments, the dimming glass includes a first glass substrate, a first adhesive film layer, a dimming and color-changing layer, a second adhesive film layer, and a second glass substrate stacked sequentially; the first adhesive film layer and the second adhesive film layer each include an adhesive film gradient portion and an adhesive film transparent portion, the adhesive film transparent portion being located in the main viewing area, the adhesive film gradient portion being located in the sunshade dimming area and the transition area, and the dimming and color-changing layer being located in the sunshade dimming area.

[0011] In some embodiments, the gradient portion of the film has a dark-colored area located in the sunshade and light-changing area, and the light-changing color-changing layer has a first edge close to the transition area, wherein the distance between the first edge and the boundary of the dark-colored area is ≥5mm.

[0012] In some embodiments, the color-changing layer is a photochromic adhesive film layer.

[0013] In some embodiments, the sum of the thicknesses of the first adhesive film layer and the second adhesive film layer is greater than or equal to twice the thickness of the color-changing layer.

[0014] In some embodiments, the dimming color-changing layer has a first edge near the transition region, and the first edge is provided with a beveled surface.

[0015] In some embodiments, the dimming and color-changing layer has a first surface and a second surface disposed opposite to each other, the first surface being close to the first adhesive film layer and the second surface being close to the second adhesive film layer; the chamfered surface and the second surface form a first angle, the first angle being an acute angle, and the thickness of the first adhesive film layer being greater than or equal to the thickness of the second adhesive film layer.

[0016] In some embodiments, the first included angle is ≥55° and ≤75°.

[0017] In some embodiments, a first shielding layer is disposed on the side of the first glass substrate near the first adhesive film layer, the first shielding layer being close to the edge of the first glass substrate; a second shielding layer is disposed on the side of the second glass substrate near the second adhesive film layer, the second shielding layer being close to the edge of the second glass substrate; the dimming and color-changing layer has a first edge, a second edge, a third edge, and a fourth edge connected in sequence, the first edge being close to the transition region; in the thickness direction of the dimming glass, the second edge, the third edge, and the fourth edge are shielded by the first shielding layer and the second shielding layer.

[0018] An embodiment of the second aspect of this application provides a means of transportation that includes the dimming glass in any of the above embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a dimming glass in one embodiment of this application;

[0020] Figure 2 for Figure 1 Schematic diagram of section AA;

[0021] Figure 3 for Figure 1 A schematic diagram of the BB section;

[0022] Figure 4 for Figure 1 Another schematic diagram of the BB section;

[0023] Figure 5 This is a schematic diagram of a color-changing layer in one embodiment of this application.

[0024] Figure label:

[0025] 10. Smart glass;

[0026] 100. Shading and dimming area;

[0027] 200. Transition Zone;

[0028] 300. Main field of view;

[0029] 11. First glass substrate;

[0030] 12. First adhesive film layer;

[0031] 13. Dimming and color-changing layer;

[0032] 131, First edge; 1311, Beveled surface; 133, First surface; 134, Second surface; 14, Second adhesive film layer;

[0033] 15. Second glass substrate;

[0034] 16. First shielding layer; 17. Second shielding layer. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] It should be noted that the terms "upper," "lower," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0038] As mentioned in the background section, some dimming glass technologies incorporate a sunshade area at the top, containing electrochromic color-changing devices such as liquid crystals. When strong external light shines, these devices alter the transmittance of the sunshade area to block the glare. However, when the transmittance of the sunshade area is low, the color change between the sunshade area and the main viewing area becomes abrupt, causing visual discomfort and affecting aesthetics. For example, in existing products on the market, the visible light transmittance of the electrochromic dimming area in the windshield sunshade is only 2-12% / 1-6%. Even with the lowest visible light transmittance in the dark, glare still occurs. Simultaneously, the difference between the highest visible light transmittance in the bright state and the 70% transmittance in the main viewing area is too large, resulting in an overly abrupt and unsightly appearance.

[0039] Based on the above, an embodiment of the first aspect of this application provides a dimming glass, which aims to improve the problem of overly abrupt color changes between the shading area and the main viewing area of ​​the dimming glass.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the dimming glass 10 in the first aspect embodiment of this application includes a sunshade dimming area 100, a transition area 200, and a main viewing area 300 arranged sequentially along a first direction. The visible light transmittance of the sunshade dimming area 100 gradually increases along the first direction, and the visible light transmittance of the transition area 200 also gradually increases along the first direction. The sunshade dimming area 100 has a bright state and a dark state. The maximum visible light transmittance of the sunshade dimming area 100 in the bright state is less than or equal to the minimum visible light transmittance of the transition area 200, and the maximum visible light transmittance of the transition area 200 is less than or equal to the visible light transmittance of the main viewing area 300.

[0041] When the dimming glass 10 is in an upright position, the first direction can be from the top of the dimming glass 10 to the bottom, that is, from top to bottom.

[0042] For example, the shading dimming area 100 may include a plurality of dimming sub-areas arranged along a first direction, wherein the visible light transmittance of each dimming sub-area increases sequentially along the first direction, thereby causing the visible light transmittance of the shading dimming area 100 to gradually increase along the first direction.

[0043] Similarly, the transition region 200 may include a plurality of transition sub-regions arranged along the first direction, wherein the visible light transmittance of each transition sub-region increases sequentially along the first direction, thereby causing the visible light transmittance of the transition region 200 to gradually increase along the first direction.

[0044] In addition, it is understandable that the shading dimming area 100 has a bright state and a dark state. At any position in the shading dimming area 100, the visible light transmittance when that position is in the bright state must be greater than the visible light transmittance when that position is in the dark state.

[0045] The dimming glass 10 in this embodiment includes a sunshade dimming area 100, a transition area 200, and a main field of view 300 arranged sequentially along a first direction. The sunshade dimming area 100 has a bright state and a dark state. When in the bright state, it blocks light; when exposed to strong sunlight, it switches to a dark state, further enhancing its light-blocking effect, thus providing sun protection for the driver. When the dimming glass 10 in this embodiment is used as a windshield, there is no need to install a traditional sun visor, thereby overcoming the aesthetic and safety issues associated with using a traditional sun visor.

[0046] In addition, a transition zone 200 is provided between the sunshade dimming area 100 and the main viewing area 300. The visible light transmittance of the transition zone 200 gradually increases along the first direction. Furthermore, the maximum visible light transmittance of the sunshade dimming area 100 in the bright state is less than or equal to the minimum visible light transmittance of the transition zone 200, and the maximum visible light transmittance of the transition zone 200 is less than or equal to the visible light transmittance of the main viewing area 300. By providing a transition zone 200 with gradually changing visible light transmittance, the problem of overly abrupt color changes between the sunshade dimming area 100 and the main viewing area 300 can be improved, thereby reducing or eliminating visual discomfort. In addition, it also helps to improve the aesthetics of the dimming glass 10.

[0047] In some embodiments, the visible light transmittance of the shading dimming area 100 in the bright state is ≥1% and ≤5%, and the visible light transmittance of the shading dimming area 100 in the dark state is ≥0.01% and ≤1%.

[0048] The visible light transmittance of the sunshade dimming area 100 gradually increases along the first direction. In the bright state, the minimum visible light transmittance of the sunshade dimming area 100 is ≥1%, and the maximum visible light transmittance is ≤5%, giving the sunshade dimming area 100 a certain sunshade capability in the bright state. When the outside is under strong light, the sunshade dimming area 100 will turn into a dark state, further reducing the visible light transmittance at all locations of the sunshade dimming area 100. In the dark state, the minimum visible light transmittance of the sunshade dimming area 100 is ≥0.01%, and the maximum visible light transmittance is ≤1%. At this time, the sunshade dimming area 100 also has a good blocking effect against strong light, thereby preventing the driver from being glared by the sun.

[0049] In some embodiments, the minimum visible light transmittance of the transition zone 200 is ≥5% and ≤8%. This makes the minimum visible light transmittance of the transition zone 200 closer to the maximum visible light transmittance of the sunshade dimming zone 100. As a result, the boundary between the transition zone 200 and the sunshade dimming zone 100 can have similar colors, thereby allowing the transition zone 200 to achieve a better color transition effect and eliminating the abruptness of the color change of the dimming glass 10.

[0050] In some embodiments, the visible light transmittance of the main field of view 300 is ≥70%, and the maximum visible light transmittance of the transition zone 200 is ≥35% and ≤70%. In this embodiment, the visible light transmittance of the main field of view 300 is ≥70%, thereby allowing the driver to obtain a relatively clear field of vision through the main field of view 300. The maximum visible light transmittance of the transition zone 200 is ≥35% and ≤70%, which ensures a good transition effect between the transition zone 200 and the main field of view 300, without significant color difference.

[0051] In some embodiments, the dimming glass 10 includes a first glass substrate 11, a first adhesive film layer 12, a dimming and color-changing layer 13, a second adhesive film layer 14, and a second glass substrate 15, which are sequentially stacked. Both the first adhesive film layer 12 and the second adhesive film layer 14 include a gradient portion and a transparent portion. The transparent portion is located in the main viewing area 300, and the gradient portion is located in the sunshade dimming area 100 and the transition area 200. The dimming and color-changing layer 13 is located in the sunshade dimming area 100.

[0052] The first glass substrate 11, the first adhesive film layer 12, the dimming and color-changing layer 13, the second adhesive film layer 14, and the second glass substrate 15 can be bonded together by a lamination process to form a dimming glass 10.

[0053] After the above layers are combined, the transparent portions of the first adhesive film layer 12 and the second adhesive film layer 14 correspond to the main viewing area 300, which helps to ensure that the main viewing area 300 has a high visible light transmittance. The gradient portions of the first adhesive film layer 12 and the second adhesive film layer 14 correspond to the sunshade dimming area 100 and the transition area 200, thereby enabling the sunshade dimming area 100 to be constructed such that the visible light transmittance gradually increases along the first direction, and enabling the transition area 200 to be constructed such that the visible light transmittance gradually increases along the first direction. The color-changing layer 13 is located in the sunshade dimming area 100, thereby enabling the sunshade dimming area 100 to have switchable bright and dark states.

[0054] In some embodiments, the gradient portion of the first adhesive film layer 12 and the second adhesive film layer 14 has a dark-colored region located in the sunshade dimming region 100. The boundary between the sunshade dimming region 100 and the transition region 200 is the boundary of the dark-colored region. The dimming color-changing layer 13 has a first edge 131 near the transition region 200, and the distance between the first edge 131 and the boundary of the dark-colored region is ≥5mm. This configuration avoids the problem of the boundary of the dimming color-changing layer 13 entering the transition region 200 due to operational tolerances.

[0055] In some embodiments, the color-changing layer 13 is a photochromic adhesive film layer.

[0056] In some related technologies, the dimming glass 10 has an electrochromic structure (such as a liquid crystal device) in the sunshade area. Electrodes and sealing tape are required around the electrochromic structure. In order to cover and hide the electrodes and sealing tape, a black border is set between the sunshade area and the main viewing area 300 for covering. This will look very abrupt and affect the aesthetics of the dimming glass 10.

[0057] In this embodiment, the dimming and color-changing layer 13 is a photochromic adhesive film layer, which changes color according to changes in light intensity. For example, when the ambient light intensity is weak, the photochromic adhesive film layer can be in a bright state, and when the ambient light intensity is strong, it can switch to a dark state. Since the dimming and color-changing layer 13 uses a photochromic adhesive film layer, there is no need for electrodes and sealing tape, thus eliminating the need for black edges used to cover the electrodes and sealing tape, thereby eliminating any abruptness and improving the aesthetics of the dimming glass 10.

[0058] Furthermore, the first adhesive film layer 12 and the second adhesive film layer 14 are PVB (polyvinyl butyral) adhesive film layers, and the photochromic adhesive film layer is a photochromic PVB adhesive film layer.

[0059] PVB is a relatively ideal interlayer material for laminated glass. Glass using PVB interlayer has good impact resistance, and in addition, PVB interlayer also has a certain sound insulation effect. Based on this, both the first interlayer 12 and the second interlayer 14 are made of PVB interlayer.

[0060] In addition, the photochromic adhesive film layer uses a photochromic PVB adhesive film layer, which makes the material of the photochromic adhesive film layer relatively consistent with the first adhesive film layer 12 and the second adhesive film layer 14. After lamination, they can be better fused together, so that the shading dimming area 100 and the transition area 200 have a good appearance consistency and will not form obvious splicing boundaries.

[0061] The preparation method of the photochromic PVB film layer can be as follows: a certain proportion of photochromic particles are added to PVB resin to form a homogeneous mixture, and then the mixture is extruded to form a photochromic film. The photochromic particles can be a WO3 / TiO2 composite or a halogen-metal compound.

[0062] In some embodiments, the sum of the thicknesses of the first adhesive layer 12 and the second adhesive layer 14 is greater than or equal to twice the thickness of the color-changing layer 13.

[0063] When the first glass substrate 11, the first adhesive layer 12, the dimming and color-changing layer 13, the second adhesive layer 14, and the second glass substrate 15 are bonded together through a lamination process, the first adhesive layer 12 and the second adhesive layer 14 are directly bonded in the transition region 200 and the main viewing area 300. If the thickness of the dimming and color-changing layer 13 is too large, bubbles are easily formed at the junction of the transition region 200 and the sunshade dimming region 100, resulting in appearance defects and causing the product to be scrapped. Therefore, in this embodiment, the thickness of the dimming and color-changing layer 13 is set to be less than or equal to half the sum of the thicknesses of the first adhesive layer 12 and the second adhesive layer 14. This helps to avoid appearance defects in the manufactured dimming glass 10 caused by the excessive thickness of the dimming and color-changing layer 13.

[0064] In some embodiments, such as Figure 4 , Figure 5 As shown, the dimming and color-changing layer 13 has a first edge 131 near the transition area 200, and the first edge 131 is provided with a beveled surface.

[0065] During the lamination process of the first glass substrate 11, the first adhesive film layer 12, the light-changing color-changing layer 13, the second adhesive film layer 14, and the second glass substrate 15, the first adhesive film layer 12 and the second adhesive film layer 14 at least partially melt under high temperature and high pressure conditions, thereby generating a certain fluidity, so that the first adhesive film layer 12 and the second adhesive film layer 14 in the transition region 200 and the main viewing area 300 can be bonded together.

[0066] A beveled surface 1311 is provided at the first edge 131 of the light-changing color-changing layer 13, which helps to ensure that the first adhesive film layer 12, the second adhesive film layer 14 and the first edge 131 of the light-changing color-changing layer 13 are in full contact, further reducing the probability of bubbles forming at the junction of the transition area 200 and the sunshade light-changing area 100, thereby improving the yield of the product.

[0067] In some embodiments, the dimming and color-changing layer 13 has a first surface 133 and a second surface 134 disposed opposite to each other, the first surface 133 being close to the first adhesive film layer 12 and the second surface 134 being close to the second adhesive film layer 14. The beveled surface 1311 and the second surface 134 form a first included angle α, the first included angle α being an acute angle, and the thickness of the first adhesive film layer 12 being greater than or equal to the thickness of the second adhesive film layer 14.

[0068] Therefore, before lamination, a triangular gap is formed between the relatively thick first adhesive film layer 12 and the oblique surface 1311. During the lamination process, since the first adhesive film layer 12 is relatively thick and has more material, the first adhesive film layer 12 can better fill the gap after partial melting, thereby further reducing the probability of forming air bubbles.

[0069] Furthermore, the first included angle α is ≥55° and ≤75°. If the first included angle α is too small, the area of ​​the beveled surface will be large, and the area of ​​the effective control region of the light-changing color-changing layer 13 will be smaller. If the first angle α is too large, the beveled surface will not be able to effectively ensure that the first edge 131 is in full contact with the first adhesive layer 12 and the second adhesive layer 14 during lamination. In view of the above, in this embodiment, the first included angle α is set to ≥55° and ≤75°. Thus, the first adhesive layer 12 and the second adhesive layer 14 can be in full contact with the first edge 131 of the light-changing color-changing layer 13 without reducing the area of ​​the effective control region of the light-changing color-changing layer 13.

[0070] In some embodiments, a first shielding layer 16 is disposed on the side of the first glass substrate 11 near the first adhesive layer 12, and the first shielding layer 16 is near the edge of the first glass substrate 11. A second shielding layer 17 is disposed on the side of the second glass substrate 15 near the second adhesive layer 14, and the second shielding layer 17 is near the edge of the second glass substrate 15. The dimming and color-changing layer 13 has a first edge 131, a second edge, a third edge, and a fourth edge connected in sequence, and the first edge 131 is near the transition region 200. In the thickness direction of the dimming glass 10, the second edge, the third edge, and the fourth edge are shielded by the first shielding layer 16 and the second shielding layer 17.

[0071] The second, third, and fourth edges of the dimming color-changing layer 13 are all close to the edge of the dimming glass 10. Therefore, the second, third, and fourth edges of the dimming color-changing layer 13 can be blocked by the first shielding layer 16 near the edge of the first glass substrate 11 and the second shielding layer 17 near the edge of the second glass substrate 15.

[0072] An embodiment of the second aspect of this application provides a means of transportation that includes the dimming glass 10 in any of the above embodiments. Exemplarily, the means of transportation may be a car, train, airplane, etc.

[0073] The vehicle in this embodiment is based on the same inventive concept as the dimming glass in the above embodiments. Therefore, the vehicle in this embodiment can obtain all the beneficial effects of the dimming glass in the above embodiments.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A type of dimming glass, characterized in that, It includes a shading and dimming area, a transition area, and a main viewing area arranged sequentially along the first direction; The visible light transmittance of the shading and dimming area gradually increases along the first direction, and the visible light transmittance of the transition area gradually increases along the first direction; The shading and dimming area has a bright state and a dark state. The maximum visible light transmittance of the shading and dimming area in the bright state is less than or equal to the minimum visible light transmittance of the transition area. The maximum visible light transmittance of the transition area is less than or equal to the visible light transmittance of the main field of view area. The dimming glass includes a first glass substrate, a first adhesive film layer, a dimming and color-changing layer, a second adhesive film layer, and a second glass substrate, which are stacked sequentially. Both the first adhesive film layer and the second adhesive film layer include an adhesive film gradient portion and an adhesive film transparent portion. The adhesive film transparent portion is located in the main field of view area, the adhesive film gradient portion is located in the sunshade and light-changing area and the transition area, and the light-changing color-changing layer is located in the sunshade and light-changing area. The dimming and color-changing layer has a first edge near the transition zone, and the first edge is provided with a beveled surface.

2. The dimming glass according to claim 1, characterized in that, The visible light transmittance of the shading and dimming area in the bright state is ≥1% and ≤5%, and the visible light transmittance of the shading and dimming area in the dark state is ≥0.01% and ≤1%.

3. The dimming glass according to claim 2, characterized in that, The minimum visible light transmittance of the transition zone is ≥5% and ≤8%.

4. The dimming glass according to claim 1, characterized in that, The visible light transmittance of the main field of view is ≥70%, and the maximum visible light transmittance of the transition zone is ≥35% and ≤70%.

5. The dimming glass according to claim 1, characterized in that, The gradient portion of the adhesive film has a dark-colored area located in the sunshade and light-changing area. The light-changing color-changing layer has a first edge close to the transition area, and the distance between the first edge and the boundary of the dark-colored area is ≥5mm.

6. The dimming glass according to claim 1, characterized in that, The light-changing color-changing layer is a photochromic adhesive film layer.

7. The dimming glass according to claim 1, characterized in that, The sum of the thicknesses of the first adhesive film layer and the second adhesive film layer is greater than or equal to twice the thickness of the color-changing layer.

8. The dimming glass according to claim 1, characterized in that, The dimming and color-changing layer has a first surface and a second surface disposed opposite to each other, the first surface being close to the first adhesive film layer and the second surface being close to the second adhesive film layer; The beveled surface forms a first angle with the second surface, the first angle being an acute angle, and the thickness of the first adhesive film layer is greater than or equal to the thickness of the second adhesive film layer.

9. The dimming glass according to claim 8, characterized in that, The first included angle is ≥55° and ≤75°.

10. The dimming glass according to claim 1, characterized in that, A first shielding layer is provided on the side of the first glass substrate near the first adhesive film layer, and the first shielding layer is near the edge of the first glass substrate. A second shielding layer is provided on the side of the second glass substrate near the second adhesive film layer, and the second shielding layer is near the edge of the second glass substrate. The dimming and color-changing layer has a first edge, a second edge, a third edge and a fourth edge connected in sequence, with the first edge close to the transition area; In the thickness direction of the dimming glass, the second edge, the third edge, and the fourth edge are blocked by the first shielding layer and the second shielding layer.

11. A means of transportation, characterized in that, Including the dimming glass as described in any one of claims 1 to 10.

Images