Wear-resistant and scratch-resistant photochromic glass and anti-dazzling rearview mirror

Abstract

The utility model discloses wear-resistant and scratch-resistant photochromic glass, which comprises a glass substrate, a photochromic layer and a protective layer, the photochromic film is arranged on the surface of one side of the glass substrate; and the DLC thin film is arranged on the surface of one side, far away from the glass substrate, of the photochromic thin film. The photochromic glass is high in surface hardness, good in wear resistance and scratch resistance and small in overall thickness. The utility model further discloses an anti-dazzling rearview mirror. The anti-dazzling rearview mirror comprises the photochromic glass.

Description

Technical Field

[0001] The utility model relates to automobile parts, in particular to a photochromic glass and an anti-glare rearview mirror. Background Art

[0002] The rearview mirror is a crucial component in a car, allowing the driver to observe what's behind the vehicle and playing a crucial role in driving safety. When driving at night or in a dark, long tunnel, the headlights of the vehicle behind you shine through the rear window onto the rearview mirror. This strong reflected light can cause glare in the driver's eyes, irritating them and affecting their vision, posing a serious threat to the safety of the driver and passengers.

[0003] Chinese patent application number CN202122123440.4 discloses a photo-induced anti-glare rearview mirror, comprising a first substrate and a second substrate arranged opposite to each other, and a photochromic material filled between the first substrate and the second substrate; the first substrate and at least one of the second substrates are provided with a packaging groove for accommodating the photochromic material.

[0004] The first substrate and the second substrate of the above-mentioned optical anti-glare rearview mirror are generally made of glass substrates. However, the hardness of glass substrates is relatively low and the thickness is relatively large, which results in the rearview mirror not only being easily scratched by hard objects but also having a relatively large overall thickness. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a photochromic glass, which has high surface hardness, good wear and scratch resistance, and small overall thickness.

[0006] The utility model also provides an anti-glare rearview mirror, comprising the above-mentioned photochromic glass.

[0007] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0008] A wear-resistant and scratch-resistant photochromic glass, comprising:

[0009] Glass substrate;

[0010] A photochromic film is provided on one surface of the glass substrate;

[0011] The DLC diamond-like carbon film is disposed on a surface of the photochromic film that is away from the glass substrate.

[0012] Furthermore, the thickness of the DLC diamond-like carbon film is smaller than the thickness of the glass substrate.

[0013] Furthermore, the thickness of the DLC diamond-like carbon film is 10-100 nm, and the thickness of the glass substrate is 2-5 mm.

[0014] Furthermore, the photochromic film is a silver halide microcrystalline film or a diarylethene-iridium complex film.

[0015] Furthermore, the thickness of the photochromic film is 90-110 μm.

[0016] An anti-glare rearview mirror comprises the above-mentioned photochromic glass, wherein the glass substrate of the photochromic glass is reflective glass.

[0017] An anti-glare rearview mirror comprises the above-mentioned photochromic glass and a reflective film. The glass substrate of the photochromic glass is transparent glass, and the reflective film is arranged on the other side surface of the glass substrate.

[0018] An anti-glare rearview mirror comprises the above-mentioned photochromic glass and a display screen. The glass substrate of the photochromic glass is transparent glass, and the display screen is arranged on the other side surface of the glass substrate.

[0019] Furthermore, the display screen is an LCD screen or an OLED screen.

[0020] Furthermore, the glass substrate serves as an upper packaging substrate of the display screen.

[0021] The utility model has the following beneficial effects: the photochromic glass of the utility model uses the DLC diamond-like carbon film to be combined with the glass substrate to encapsulate the photochromic film. Compared with the glass substrate, the DLC diamond-like carbon film has higher hardness and also plays a protective role for the photochromic film. When used as the outer surface of an anti-glare rearview mirror, it can prevent the anti-glare rearview mirror from being scratched by hard objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the stacking structure of the photochromic glass provided by the present invention.

[0023] Figure 2 This is a schematic diagram of the stacking structure of the anti-glare rearview mirror provided by the utility model.

[0024] Figure 3 This is a schematic diagram of the stacking structure of another anti-glare rearview mirror provided by the present invention.

[0025] Figure 4 This is a schematic diagram of the stacking structure of another anti-glare rearview mirror provided by the present invention.

[0026] Figure 5This is a schematic diagram of the stacking structure of another anti-glare rearview mirror provided by the present invention.

[0027] Figure 6 This is a schematic diagram of the stacking structure of another anti-glare rearview mirror provided by the present invention.

[0028] Figure 7 This is a schematic diagram of the stacking structure of another anti-glare rearview mirror provided by the present invention. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0032] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Example 1

[0034] like Figure 1As shown, a wear-resistant and scratch-resistant photochromic glass comprises:

[0035] Glass substrate 11;

[0036] A photochromic film 12 is provided on one surface of the glass substrate 11;

[0037] The DLC diamond-like carbon film 13 is disposed on a surface of the photochromic film 12 that is away from the glass substrate 11 .

[0038] The photochromic glass of the present invention uses the DLC diamond-like carbon film 13 to be combined with the glass substrate 11 to encapsulate the photochromic film 12. Compared with the glass substrate 11, the DLC diamond-like carbon film 13 has a higher hardness and also plays a protective role for the photochromic film 12. When used as the outer surface of the anti-glare rearview mirror, it can prevent the anti-glare rearview mirror from being scratched by hard objects.

[0039] The DLC diamond-like carbon film 13 is a nanoscale film, also known as an amorphous diamond film 13 (DLC). It is a metastable material composed of carbon elements, with properties similar to diamond but also possessing the atomic structure of graphite. The DLC diamond-like carbon film 13 is an amorphous film in which carbon atoms are bonded covalently, primarily consisting of sp2 and sp3 hybrid bonds. Some hydrogen-containing DLC ​​films also contain C-H bonds. It exhibits very high hardness, with significant variations in hardness achieved using different deposition methods, reaching a maximum hardness of 70-110 GPa, comparable to that of diamond. Various methods are available for preparing the DLC diamond-like carbon film 13, including chemical vapor deposition (CVD), physical vapor deposition (PVD), ion beam deposition (IBAD), and radio frequency plasma-enhanced chemical vapor deposition (PECVD).

[0040] Since the thickness of the DLC diamond-like film 13 is less than that of the glass substrate 11, the photochromic glass of the present invention adopts a packaging structure combining the DLC diamond-like film 13 and the glass substrate 11. Compared with the packaging structure using double-layer glass in the prior art, the overall thickness is much smaller.

[0041] In this embodiment, the thickness of the DLC diamond-like film 13 is 10-100 nm, and the thickness of the glass substrate 11 is 2-5 mm. Of course, the specific thicknesses of the DLC diamond-like film 13 and the glass substrate 11 are not limited to the above ranges and can be adjusted according to actual product requirements.

[0042] The photochromic film 12 may be, but is not limited to, a silver halide microcrystalline film such as silver bromide microcrystals or silver chloride microcrystals, which can change color under sunlight or ultraviolet light. The greater the intensity of sunlight or ultraviolet light, the deeper the color. It can also maintain sufficient light transmittance without affecting the rearview function and restore to a transparent state when there is no light. The photochromic film 12 may also be a diarylethene-iridium complex film, which directly produces a reversible photochromic effect in response to visible light.

[0043] In this embodiment, the thickness of the photochromic film 12 is 90-110 μm. Of course, the specific thickness of the photochromic film 12 is not limited to the above range and can be adjusted according to actual product requirements.

[0044] Example 2

[0045] An anti-glare rearview mirror includes the photochromic glass 10 described in the first embodiment, wherein the glass substrate 11 of the photochromic glass 10 is reflective glass.

[0046] The anti-glare rearview mirror of the present invention directly reflects the light from behind the car through the glass substrate 11 of the photochromic glass 10 to provide the driver with a rearview image. No additional reflective film 20 is required, which can save the coating process of the reflective material, reduce the process cost, avoid product defects caused by the coating process, and further reduce the product thickness.

[0047] Example 2

[0048] like Figure 2 As shown, an anti-glare rearview mirror includes the photochromic glass 10 and the reflective film 20 described in Example 1. The glass substrate 11 of the photochromic glass 10 is transparent glass, and the reflective film 20 is arranged on the other side surface of the glass substrate 11.

[0049] The anti-glare rearview mirror of the present invention reflects light from behind the car through the reflective film 20 located on the other side surface of the glass substrate 11 of the photochromic glass 10 to provide a rearview image for the driver. The coating process of the reflective material is mature and the product stability is high.

[0050] The reflective film 20 is usually a silver-plated film, but other metal-plated films or polymer films with higher reflectivity can also be used.

[0051] Example 3

[0052] like Figure 3 As shown, an anti-glare rearview mirror includes the photochromic glass 10 and a display screen 30 as described in Example 1. The glass substrate 11 of the photochromic glass 10 is transparent glass, and the display screen 30 is arranged on the other side surface of the glass substrate 11.

[0053] The anti-glare rearview mirror of the present invention provides the driver with a rearview image through a display screen 30 located on the other side surface of the glass substrate 11 of the photochromic glass 10 in cooperation with a rearview camera outside the vehicle. It has a high degree of intelligence and can be combined with different types of rearview cameras according to product positioning and functions to achieve more advanced functions.

[0054] In this embodiment, the display screen 30 is an LCD screen or an OLED screen.

[0055] like Figure 4 As shown, the LCD screen includes an upper polarizer 31a, an upper packaging substrate 32a, a liquid crystal material 33a, a lower packaging substrate 34a and a lower polarizer 35a, which are arranged in sequence from top to bottom. Figure 5 As shown, the OLED screen includes a circular polarizer 31b, an upper packaging substrate 32b, an OLED light-emitting device 33b and a lower packaging substrate 34b, which are arranged in sequence from top to bottom.

[0056] Preferably, Figure 6 and 7 As shown, the glass substrate 11 serves as the upper packaging substrate 32 a or 32 b of the display screen 30 , and the upper polarizer 31 a or circular polarizer 31 b can be attached to the surface of the glass substrate 11 on one side close to the photochromic film 12 .

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention rather than to limit them. Although the embodiments of the present invention are described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solutions of the embodiments of the present invention can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wear-resistant and scratch-resistant photochromic glass, characterized in that: include: Glass substrate; A photochromic film is provided on one surface of the glass substrate; The DLC diamond-like carbon film is disposed on a surface of the photochromic film that is away from the glass substrate.

2. The photochromic glass according to claim 1, characterized in that: The thickness of the DLC diamond-like carbon film is smaller than the thickness of the glass substrate.

3. The photochromic glass according to claim 2, characterized in that: The thickness of the DLC diamond-like carbon film is 10-100 nm, and the thickness of the glass substrate is 2-5 mm.

4. The photochromic glass according to claim 1, wherein: The photochromic film is a silver halide microcrystalline film or a diarylethene-iridium complex film.

5. The photochromic glass according to claim 1 or 4, characterized in that: The thickness of the photochromic film is 90-110 μm.

6. An anti-glare rearview mirror, characterized in that: The photochromic glass according to claim 1, wherein the glass substrate of the photochromic glass is reflective glass.

7. An anti-glare rearview mirror, characterized in that: The invention comprises the photochromic glass according to claim 1 and a reflective film, wherein the glass substrate of the photochromic glass is transparent glass, and the reflective film is arranged on the other side surface of the glass substrate.

8. An anti-glare rearview mirror, characterized in that: The invention comprises the photochromic glass according to claim 1 and a display screen, wherein the glass substrate of the photochromic glass is transparent glass, and the display screen is arranged on the other side surface of the glass substrate.

9. The anti-glare rearview mirror according to claim 8, characterized in that: The display screen is an LCD screen or an OLED screen.

10. The anti-glare rearview mirror according to claim 8 or 9, characterized in that: The glass substrate serves as an upper packaging substrate of the display screen.

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