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Coated glass, preparation method thereof and automobile glass assembly

A coated glass and coating technology, applied in vehicle parts, windshields, transportation and packaging, etc., can solve problems such as affecting aesthetics, laser radar jitter, and affecting driving safety performance.

Active Publication Date: 2022-05-27
FUYAO GLASS IND GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many defects in the existing vehicle-mounted laser radar: the laser radar is installed outside the car body, which affects the appearance, and is greatly affected by the weather environment. Vibration of the radar will cause jitter, resulting in unstable detection results
As the field of view increases, the signal transmittance of automotive glass to lidar will further decrease.

Method used

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  • Coated glass, preparation method thereof and automobile glass assembly
  • Coated glass, preparation method thereof and automobile glass assembly
  • Coated glass, preparation method thereof and automobile glass assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] Coated glass is prepared in this embodiment, and the preparation process is as follows:

[0106] 1) Prepare 2.1mm ultra-clear glass (ultra-transparent low-iron glass) and 1.6mm ultra-clear glass (ultra-transparent low-iron glass), and after cutting, edging, washing and drying processes, enter into magnetron sputtering Coated wire.

[0107] 2) After the glass is cleaned by the magnetron sputtering coating line cleaning machine, the surface of the 2.1mm ultra-white glass is covered with a stainless steel cover, which only leaves a blank in the coating area (that is, the area is not covered, the The area is used as the anti-reflection area of ​​the lidar when the coated glass is used as automotive glass), the 1.6mm ultra-white glass does not need a cover plate, and then the two pieces of glass are transferred into the coating machine.

[0108] 3) Magnetron sputtering of the first middle refractive index layer 101 and the third middle refractive index layer 301 : SiO x N ...

Embodiment 2

[0139] The present embodiment prepares a coated glass, and the preparation process is as follows:

[0140] 1) Prepare 2.1mm ultra-clear glass (ultra-transparent low-iron glass) and 1.6mm ultra-clear glass (ultra-transparent low-iron glass), and after cutting, edging, washing and drying processes, enter magnetron sputtering Coated wire.

[0141] 2) After the glass is cleaned by the magnetron sputtering coating line cleaning machine, the surface of the 2.1mm ultra-white glass is covered with a stainless steel cover, which only leaves a blank in the coating area (that is, the area is not covered, the The area is used as the anti-reflection area of ​​the lidar when the coated glass is used as automotive glass), the 1.6mm ultra-white glass does not need a cover plate, and then the two pieces of glass are transferred into the coating machine.

[0142] 3) Magnetron sputtering of the first middle refractive index layer 101 and the third middle refractive index layer 301 : SiO x N y...

Embodiment 3

[0172] In this example, refer to the preparation process of Example 1, and use the medium refractive index material SiO x N y (n=1.71), high refractive index material Nb 2 O 5 (n=2.38) and low refractive index material SiO 2 , deposit the anti-reflection film on a single piece of glass, and through reasonable design of the film thickness of each layer, not only the incident transmittance of 120°FOV wide viewing angle is greater than 80%, but also 0°, 15°, 30°, 45°, The reflection color of the film outside the car at 60° is neutral light blue-gray, and the a value of each angle is ≤ 0 and the deviation is small; especially the reflection color of the film in the anti-reflection area of ​​the lidar and the reflection color of the film in the single-sided coating area are 0 °, 15°, 30°, 45°, 60° are consistent, so that the two different areas are visually similar, and there is no obvious color segmentation area on the car glass, which can be used as a fixed glass for the front...

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Abstract

The invention discloses coated glass, a preparation method thereof and an automobile glass assembly. The coated glass comprises a glass substrate, the glass substrate is provided with an outer surface and an inner surface, at least partial area of the inner surface is provided with a first coating film, and partial area of the outer surface is provided with a second coating film. The second coating film is at least partially overlapped with the first coating film in the thickness direction of the glass substrate so as to form double-side coating film areas on the coated glass; the first coating film comprises a first high-refractive-index layer, a first low-refractive-index layer, a second high-refractive-index layer and a second low-refractive-index layer which are sequentially stacked on the inner surface; the second coating film comprises a third high-refractive-index layer, a third low-refractive-index layer, a fourth high-refractive-index layer and a fourth low-refractive-index layer which are sequentially stacked on the outer surface.

Description

technical field [0001] The invention relates to the field of automotive glass, in particular to a coated glass, a preparation method thereof, and an automotive glass component. Background technique [0002] With the continuous improvement of the level of automatic driving of automobiles, the demand for automotive lidar is also increasing. Lidar can be divided into edge-emitting lasers, vertical cavity surface-emitting lasers, solid-state lasers, and fiber lasers according to laser types. The current mainstream laser radar wavelengths are 905nm and 1550nm. The existing vehicle lidar has many defects: the lidar is installed outside the vehicle body, which affects the appearance, and is greatly affected by the weather environment. The vibration of the radar will produce jitter, resulting in unstable detection results. [0003] In order to improve the stability and detection accuracy of lidars, you can consider installing them inside the car, for example, on the inside of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34C03C17/42B60J1/00B60J1/20
CPCC03C17/3417C03C17/3435C03C17/42B60J1/00B60J1/20C03C2217/212C03C2217/21C03C2217/218C03C2217/22C03C2217/213C03C2217/734C03C2218/156C03C2218/11
Inventor 曹晖张洁林曾东林高强福原康太
Owner FUYAO GLASS IND GROUP CO LTD