Glass-plastic composite laser radar window

Abstract

The utility model relates to the technical field of laser radar windows, in particular to a glass-plastic composite laser radar window, which comprises an aluminosilicate glass window and a black polycarbonate window, and one side surface of the aluminosilicate glass window is fixed with one side surface of the black polycarbonate window; the other side face of the aluminosilicate glass window is provided with a first AR antireflection film, and the other side face of the black polycarbonate window is provided with a second AR antireflection film. According to the utility model, the aluminosilicate glass window and the black polycarbonate window are combined to form the laser radar window, so that the shock resistance of the laser radar window can be improved on the premise of high hardness.

Description

Technical Field

[0001] The utility model relates to the technical field of laser radar windows, in particular to a glass-plastic composite laser radar window. Background Art

[0002] As an important component of laser radar, the laser radar window not only acts as an optical part to send and receive laser light, but also acts as an appearance part to protect the laser radar. Existing laser radar windows generally use special black glass or black polycarbonate materials that do not transmit visible light (380-700nm) but can transmit infrared rays of a specific band (700-1600nm). The glass material is divided into absorptive black glass that is doped with specific elements to filter out visible light and transparent glass that absorbs visible light through coating (hereinafter collectively referred to as black glass). The advantages of black glass laser radar windows are good scratch resistance, temperature resistance, and corrosion resistance, but the disadvantages are high cost, fragility, and difficulty in shaping. The advantages of polycarbonate laser radar windows are low cost, impact resistance, and easy shaping, but the disadvantages are poor scratch resistance, temperature resistance, and corrosion resistance. With the rapid expansion of laser radar applications, especially the gradual popularization of vehicle-mounted laser radars, the complex and changeable use environment has also put forward higher requirements on the performance of laser radar windows in all aspects. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a glass-plastic composite laser radar window, which combines an aluminosilicate glass window and a black polycarbonate window to form a laser radar window, which can improve the impact resistance of the laser radar window under the premise of high hardness.

[0004] The utility model is implemented by the following technical scheme: a glass-plastic composite laser radar window, comprising an aluminosilicate glass window and a black polycarbonate window, one side of the aluminosilicate glass window is fixed to one side of the black polycarbonate window; the other side of the aluminosilicate glass window has a first AR anti-reflection film, and the other side of the black polycarbonate window has a second AR anti-reflection film.

[0005] Preferably, the aluminosilicate glass window is fixed to the black polycarbonate window by glue.

[0006] Preferably, the first AR antireflection film comprises:

[0007] a first titanium dioxide film layer, a first silicon dioxide film layer,

[0008] a second titanium dioxide film layer, a second silicon dioxide film layer,

[0009] a third titanium dioxide film layer, a third silicon dioxide film layer,

[0010] A fourth titanium dioxide film layer and a fourth silicon dioxide film layer.

[0011] Preferably,

[0012] The thickness of the first titanium dioxide film layer is 10.43±0.1nm;

[0013] The thickness of the first silicon dioxide film layer is 47.14±0.1nm;

[0014] The thickness of the second titanium dioxide film layer is 126.24±0.1nm;

[0015] The thickness of the second silicon dioxide film layer is 21.49±0.1nm;

[0016] The thickness of the third titanium dioxide film layer is 121.89±0.1nm;

[0017] The thickness of the third silicon dioxide film layer is 26.38±0.1nm;

[0018] The thickness of the fourth titanium dioxide film layer is 17.15±0.1 nm;

[0019] The thickness of the fourth silicon dioxide film layer is 126.46±0.1 nm.

[0020] Preferably, the second AR antireflection film comprises an aluminum oxide film layer, a fifth titanium dioxide film layer, and a fifth silicon dioxide film layer which are sequentially fixed on a black polycarbonate window.

[0021] Preferably, the thickness of the aluminum oxide film layer is 30.00±0.1 nm; the thickness of the fifth titanium dioxide film layer is 30.67±0.1 nm; and the thickness of the fifth silicon dioxide film layer is 199.78±0.1 nm.

[0022] Beneficial effects of the utility model:

[0023] (1) The hardness of the black polycarbonate window is 3B, and the hardness of the aluminosilicate glass window is 6.5H. The laser radar window formed by the combination of the two uses the aluminosilicate glass window surface as the outer surface of the laser radar, which can improve the scratch resistance of the laser radar window.

[0024] (2) One side of the aluminosilicate glass window is fixed to one side of the black polycarbonate window. The toughness of the polycarbonate material is better than that of the glass material. Combining the aluminosilicate glass window and the black polycarbonate window to form a lidar window can improve the impact resistance of the lidar window.

[0025] (3) Using aluminosilicate glass bonded to black polycarbonate windows can achieve a black appearance of the window and reduce costs. The market uses black colored glass as a lidar window to achieve a black appearance solution. Because colored glass is expensive, it cannot be mass-produced. The price of polycarbonate and aluminosilicate glass materials is relatively low, which is conducive to the mass production of such products.

[0026] The utility model combines an aluminosilicate glass window and a black polycarbonate window to form a laser radar window, which can improve the impact resistance of the laser radar window under the premise of high hardness. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 Schematic diagram of the structure of the first AR antireflection film.

[0029] Figure 3 Schematic diagram of the structure of the second AR antireflection film. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with the accompanying drawings.

[0031] like Figures 1 to 3 The utility model provides an embodiment: a glass-plastic composite laser radar window, including an aluminosilicate glass window 1 and a black polycarbonate window 3. The hardness of the black polycarbonate window 3 is 3B, and the hardness of the aluminosilicate glass window 1 is 6.5H. The laser radar window formed by the combination of the two uses the aluminosilicate glass window 1 as the outer surface of the laser radar, which can improve the scratch resistance of the laser radar window. One side of the aluminosilicate glass window 1 is fixed to one side of the black polycarbonate window 3. The toughness of the polycarbonate material is better than that of the glass material. Combining the aluminosilicate glass window 1 with the black polycarbonate window 3 can improve the impact resistance of the laser radar window. The other side of the aluminosilicate glass window 1 has a first AR anti-reflection film 2, and the other side of the black polycarbonate window 3 has a second AR anti-reflection film 4, which can increase the light transmittance of the window. The hardness of the black polycarbonate window 3 after being coated with the first AR antireflection film 2 is HB, and the hardness of the aluminosilicate glass window 1 after being coated is 7H, so that the laser radar window has the advantages of high hardness and scratch resistance.

[0032] The first AR antireflection film 2 includes a plurality of layers fixed in sequence on the aluminosilicate glass window 1.

[0033] a first titanium dioxide film layer 21, a first silicon dioxide film layer 22,

[0034] The second titanium dioxide film layer 23, the second silicon dioxide film layer 24,

[0035] The third titanium dioxide film layer 25, the third silicon dioxide film layer 26,

[0036] A fourth titanium dioxide film layer 27 and a fourth silicon dioxide film layer 28 .

[0037] Titanium dioxide is used as a high refractive index film layer, silicon dioxide is used as a low refractive index film layer, and the combination of high and low refractive index film layers achieves an anti-reflection effect through thin film interference.

[0038] The second AR antireflection film 4 comprises an aluminum oxide film layer 41, a fifth titanium dioxide film layer 42, and a fifth silicon dioxide film layer 43 which are sequentially fixed on the black polycarbonate window 3. Aluminum oxide is used to improve the bonding strength between the black polycarbonate and the film layer.

[0039] In one embodiment of the utility model, the aluminosilicate glass window 1 is fixed to the black polycarbonate window 3 by glue. The glue can be Norland 61 optical glue. After gluing, the reflectivity of the gluing surface of the aluminosilicate glass window 1 and the black polycarbonate window 3 can be reduced, thereby greatly improving the transmittance of the laser radar window.

[0040] In one embodiment of the utility model,

[0041] The thickness of the first titanium dioxide film layer 21 is 10.43±0.1 nm;

[0042] The thickness of the first silicon dioxide film layer 22 is 47.14±0.1 nm;

[0043] The thickness of the second titanium dioxide film layer 23 is 126.24±0.1 nm;

[0044] The thickness of the second silicon dioxide film layer 24 is 21.49±0.1 nm;

[0045] The thickness of the third titanium dioxide film layer 25 is 121.89±0.1 nm;

[0046] The thickness of the third silicon dioxide film layer 26 is 26.38±0.1 nm;

[0047] The thickness of the fourth titanium dioxide film layer 27 is 17.15±0.1 nm;

[0048] The thickness of the fourth silicon dioxide film layer 28 is 126.46±0.1 nm.

[0049] Through the above-mentioned nanometer-level thickness optical film design, the anti-reflection effect can be better achieved.

[0050] In one embodiment of the present invention, the thickness of the aluminum oxide film layer 41 is 30.00±0.1nm; the thickness of the fifth titanium dioxide film layer 42 is 30.67±0.1nm; and the thickness of the fifth silicon dioxide film layer 43 is 199.78±0.1nm. The above-mentioned nanometer-level thickness optical film design can better improve the bonding strength between the black polycarbonate and the film layer.

[0051] The hardness values ​​in the present invention are all obtained by using a pencil hardness test method with a load of 750g.

[0052] The above description is only a preferred embodiment of the present utility model and cannot be understood as a limitation of the present application. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the present utility model.

Claims

1. A glass-plastic composite laser radar window, characterized in that: It comprises an aluminosilicate glass window and a black polycarbonate window, wherein one side of the aluminosilicate glass window is fixed to one side of the black polycarbonate window; the other side of the aluminosilicate glass window is provided with a first AR anti-reflection film, and the other side of the black polycarbonate window is provided with a second AR anti-reflection film.

2. The glass-plastic composite laser radar window according to claim 1, characterized in that: The aluminosilicate glass window is fixed to the black polycarbonate window by glue.

3. A glass-plastic composite laser radar window according to claim 1 or 2, characterized in that: The first AR antireflection film includes a plurality of layers fixed in sequence on the aluminosilicate glass window. a first titanium dioxide film layer, a first silicon dioxide film layer, a second titanium dioxide film layer, a second silicon dioxide film layer, a third titanium dioxide film layer, a third silicon dioxide film layer, A fourth titanium dioxide film layer and a fourth silicon dioxide film layer.

4. The glass-plastic composite laser radar window according to claim 3, characterized in that: The thickness of the first titanium dioxide film layer is 10.43±0.1nm; The thickness of the first silicon dioxide film layer is 47.14±0.1nm; The thickness of the second titanium dioxide film layer is 126.24±0.1nm; The thickness of the second silicon dioxide film layer is 21.49±0.1nm; The thickness of the third titanium dioxide film layer is 121.89±0.1nm; The thickness of the third silicon dioxide film layer is 26.38±0.1nm; The thickness of the fourth titanium dioxide film layer is 17.15±0.1 nm; The thickness of the fourth silicon dioxide film layer is 126.46±0.1 nm.

5. A glass-plastic composite laser radar window according to claim 1 or 2, characterized in that: The second AR antireflection film includes an aluminum oxide film layer, a fifth titanium dioxide film layer, and a fifth silicon dioxide film layer which are sequentially fixed on a black polycarbonate window.

6. The glass-plastic composite laser radar window according to claim 5, characterized in that: The thickness of the aluminum oxide film layer is 30.00±0.1 nm; the thickness of the fifth titanium dioxide film layer is 30.67±0.1 nm; and the thickness of the fifth silicon dioxide film layer is 199.78±0.1 nm.

Images