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CN-117124820-B - Windshield and vehicle

CN117124820BCN 117124820 BCN117124820 BCN 117124820BCN-117124820-B

Abstract

The application relates to a windshield and a vehicle, wherein the windshield comprises an optical sensor arranged in the vehicle, and a laminated glass, wherein an optical window is arranged in the visual field of the optical sensor, the laminated glass comprises an outer layer glass, a bonding layer and an inner layer glass which are arranged in a laminated mode, and the inner layer glass is provided with a first through hole, wherein the optical window is positioned in the first through hole, and the MTF value of the optical window is larger than or equal to 0.3. The windshield can enable the MTF value of the optical window of the laminated glass to be larger than or equal to 0.3, enable the optical sensor to acquire clearer environmental image data, reduce the probability of deviation caused by an algorithm of an ADAS system of a vehicle, and can meet the automatic driving requirement of more than L3 level.

Inventors

  • CAI FENG
  • HE CHANGLONG
  • ZHANG CANZHONG
  • LI WEIJUN
  • GUAN JINLIANG
  • JIANG BINGMING

Assignees

  • 福耀玻璃工业集团股份有限公司

Dates

Publication Date
20260508
Application Date
20230915

Claims (15)

  1. 1. A windshield of a vehicle, comprising a glass, characterized by comprising the following steps: An optical sensor (200) mounted in the vehicle interior; A laminated glass (100) having an optical window (101) in the field of view of the optical sensor (200), the laminated glass (100) comprising an outer glass (110), an adhesive layer (130), and an inner glass (120) that are laminated, the inner glass (120) having a first through hole (121) formed therein; wherein the optical window (101) is positioned in the first through hole (121), and the MTF value of the optical window (101) is greater than or equal to 0.3; the angle between the line connecting the top and bottom ends of the laminated glass (100) and the central axis of the optical sensor (200) is alpha, the vertical view angle of the optical sensor (200) is beta, the length of the line connecting the top and bottom ends of the first through hole (121) is a, the length of the line connecting the vertical view of the optical sensor (200) and the outer glass (110) is b after the windshield is mounted on a vehicle, , K1 is a constant and K1=12 to 18, alpha is 20 to 45 degrees, and beta is 17 to 65 degrees.
  2. 2. The windscreen according to claim 1, wherein the relative position of the laminated glass (100) and the optical sensor (200) satisfies the following conditions: the horizontal view angle of the optical sensor (200) is gamma, the width of the first through hole (121) in the horizontal view field direction of the optical sensor (200) is m, the intersection line length of the horizontal view field of the optical sensor (200) and the outer layer glass (110) is n, wherein, ; Wherein, the K2 is constant and k2=24 to 36.
  3. 3. A windscreen according to claim 2, wherein said γ is 28 ° to 120 °.
  4. 4. The windshield according to claim 1, wherein the minimum gap distance of the optical sensor (200) from the inner glass (120) is c, the c being 2mm to 5mm.
  5. 5. The windshield according to claim 1, wherein the adhesive layer (130) is provided with a second through hole (131), the second through hole (131) is in communication with the first through hole (121) and the optical window (101) is located in the second through hole (131).
  6. 6. The windshield according to claim 5, wherein the laminated glass (100) further comprises a first shielding layer (140) provided between the outer glass (110) and the adhesive layer (130), the first shielding layer (140) being provided with a third through hole (141), the third through hole (141) being in communication with the second through hole (131) and the optical window (101) being located within the third through hole (141).
  7. 7. The windshield according to claim 6, wherein the laminated glass (100) further comprises a second shielding layer (150), the second shielding layer (150) being provided on a side of the inner glass (120) remote from the adhesive layer (130).
  8. 8. The windshield according to claim 6, characterized in that the optical window (101) has a smaller profile area than the third through hole (141), the third through hole (141) having a smaller profile area than or equal to the first through hole (121), the second through hole (131) having a larger profile area than or equal to the first through hole (121).
  9. 9. The windshield according to claim 6, wherein the laminated glass (100) further comprises an anti-reflection layer (160) provided on a side of the outer glass (110) close to the adhesive layer (130), the anti-reflection layer (160) being located within the third through hole (141) and covering at least the optical window (101), the anti-reflection layer (160) being for reducing the reflectivity of the optical signal emitted and/or received by the optical sensor (200) by the outer glass (110).
  10. 10. The windscreen according to claim 6, wherein the laminated glass (100) further comprises an electric heating element provided on a side of the outer glass (110) close to the adhesive layer (130), the electric heating element being located within the third through hole (141) and covering at least the optical window (101).
  11. 11. The windscreen according to claim 1, wherein the laminated glass (100) further comprises a thermal insulating layer (170), the thermal insulating layer (170) comprising at least one metallic silver layer, silver alloy layer or transparent conductive oxide layer, the thermal insulating layer (170) avoiding the optical window (101).
  12. 12. The windshield according to claim 1, wherein the outer layer glass (110) is a transparent glass or a super-transparent glass, and the inner layer glass (120) is a transparent glass or a colored glass; The total iron content of the transparent glass is less than or equal to 0.08%, the visible light transmittance of the transparent glass is greater than or equal to 80%, the total iron content of the super-transparent glass is less than or equal to 0.015%, the visible light transmittance of the super-transparent glass is greater than or equal to 91%, the total iron content of the colored glass is greater than or equal to 0.1%, and the visible light transmittance of the colored glass is greater than 70%.
  13. 13. The windshield according to claim 1, wherein the optical sensor (200) is a visible light camera with pixels greater than or equal to 200 ten thousand, the MTF value of the visible light camera at 1/2 nyquist frequency being greater than or equal to 0.6.
  14. 14. The windshield according to claim 1, wherein the optical window (101) has a first transmittance TL1 for visible light having a wavelength of 440nm to 700nm, which is incident at an angle of 0 to 70 °, and the optical window (101) has a transmittance TL2, TL1 being equal to or greater than 50%, of visible light having a wavelength of 600nm to 700nm, which is incident at an angle of 0 to 70 °, and a ratio TL2/TL1 of TL2 to TL1 being equal to or greater than 0.8.
  15. 15. A vehicle, characterized in that it comprises a windscreen according to any one of claims 1 to 14, said optical sensor (200) being mounted inside the vehicle and facing said optical window (101).

Description

Windshield and vehicle Technical Field The application relates to the technical field of glass products, in particular to a windshield and a vehicle. Background In automatic driving or assisted driving of an automobile, a large amount of data collection needs to be performed on the front environment, and an optical sensor mounted on a windshield is very important data acquisition equipment. With the increasing requirements of automatic driving, the optical sensor needs to accurately acquire images at a far distance, and accordingly, the pixels of the optical sensor need to be continuously increased, which makes the optical sensor with a long distance and a narrow viewing angle put higher requirements on the optical distortion of the windshield, so as to reduce the object image distortion as much as possible. From the point of view of the requirements for optical distortion of the windshield, the requirements for optical distortion of the windshield are increasingly stringent, from the early point of view of the optical distortion of the windshield being required to be less than 200mdpt (diopters), up to values requiring the optical distortion of the windshield to be less than 150mdpt, 120mdpt, 100mdpt, or even less than 100 mdpt. In the related art, most optical sensor manufacturers do not consider that the automobile windshield has an influence on the imaging definition of the optical sensor, so that after the optical sensor is actually assembled on an automobile, the windshield influences the definition of an image acquired by the optical sensor to a great extent, and particularly, the influence on the imaging of the optical sensor with high pixels and a narrow viewing angle is obvious. When the imaging definition of the optical sensor is affected by the windshield, the imaging definition can affect the algorithm of the advanced driving assistance system (ADVANCED DRIVING ASSISTANCE SYSTEM, ADAS system) of the automobile to accurately identify and judge the image acquired by the optical sensor, so that the algorithm of the ADAS system generates deviation. MTF (Modulation Transfer Function) is a modulation transfer function, which refers to a function of a modulation degree changing along with spatial frequency, and the performance of the optical sensor is directly evaluated by adopting an MTF value, wherein the higher the MTF value is, the better the definition of an image acquired by the optical sensor is. The MTF value of the optical sensor in the optical window area corresponding to the windshield is about 0.1, the image obtained by the optical sensor is not clear enough, huge deviation is generated on an algorithm of an ADAS system of an automobile, and the automatic driving requirement of more than the L3 level cannot be met. Disclosure of Invention The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides the windshield and the vehicle, and the MTF value of the optical sensor in the optical window corresponding to the windshield is larger than or equal to 0.3, so that the optical sensor can acquire clearer image data to meet the automatic driving requirement of more than L3 level. In a first aspect, the present application provides a windscreen comprising: An optical sensor mounted inside the vehicle; A laminated glass having an optical window in a visual field of the optical sensor, the laminated glass including an outer layer glass, an adhesive layer, and an inner layer glass, which are laminated, the inner layer glass having a first through hole; wherein the optical window is positioned in the first through hole, and the MTF value of the optical window is greater than or equal to 0.3. The windshield according to the first aspect of the application has at least the following advantageous effects: the windshield of the application can enable the MTF value of the optical sensor in the optical window of the laminated glass to be more than or equal to 0.3, enable the optical sensor to acquire clearer environmental image data, reduce the probability of deviation caused by an algorithm of an ADAS system of a vehicle, and can meet the automatic driving requirement of more than L3 level. In addition, the MTF value of the optical window is not influenced by the inner glass, so that the detection quality of the optical sensor is improved, and the MTF requirement of a camera with high precision and narrow horizontal field angle can be met. In some embodiments, the relative positions of the laminated glass and the optical sensor satisfy the following conditions: The included angle between the connecting line of the top end and the bottom end of the laminated glass and the central axis of the optical sensor is alpha, the vertical view angle of the optical sensor is beta, the connecting line length of the top end and the bottom end of the first through hole is a, the connecting line length of the vertical view of the optical senso