Glass article having a region for collecting information
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ACR II GLASS AMERICA INC
- Filing Date
- 2023-05-17
- Publication Date
- 2026-06-16
AI Technical Summary
In the prior art, opaque printed parts in laminated glass products cause optical distortion, especially in the window area used in vehicle information acquisition systems, affecting the accuracy of data collection and optical performance.
By introducing a thin second interlayer into the laminated glass product, setting an opaque printed part to surround the information collection window, and leaving no printing within 10mm outside the window edge, combined with a glass plate of appropriate thickness, the distortion caused by the bending process is offset, thereby minimizing optical distortion.
It effectively reduces optical distortion in the information collection window area, improves the accuracy of data collection and optical performance, meets European safety glass standards, and reduces interference with the driver's vision.
Smart Images
Figure CN117425565B_ABST
Abstract
Description
Technical Field
[0001] This disclosure primarily relates to a glass article having a region through which a sensor can collect information about the surrounding environment. Background Technology
[0002] Information acquisition systems (including cameras and other sensors) used for autonomous driving functions in vehicles are typically mounted behind the vehicle's glasswork. These systems require glasswork with minimal optical distortion in the area through which the information acquisition system can collect data from the surrounding environment, or in the windows used for information collection. Camera areas are often surrounded by opaque black printing to reduce stray light. Opaque printing on the glass plates of laminated glasswork can cause optical distortion in the areas surrounding the opaque printing. The opaque printing is typically applied to the glass plate before bending. During bending, localized differences in heat absorption may occur due to the opaque printing, which can lead to distortion in areas of the glass adjacent to the opaque printing. To improve the quality of the glasswork (including reducing optical distortion), an opaque layer can be provided on the interlayer to surround the windows used for information collection. Summary of the Invention
[0003] In one aspect, this disclosure relates primarily to a laminated glass article comprising: a first glass plate; a first interlayer; a second interlayer; and a second glass plate. At least a portion of the second interlayer may include a first opaque printed element, and the first opaque printed element may at least partially surround a window for collecting information. The optical distortion in the window for collecting information in the laminated glass article is closer to zero than the average optical distortion outside the window for collecting information.
[0004] In some embodiments, the first and second interlayers can be made of the same substrate. The second interlayer can be positioned between the first interlayer and the first glass plate. The thickness of the second interlayer can be from 20 μm to 50 μm.
[0005] In some embodiments, the thickness of the first and second glass plates can be from 1 mm to 2.5 mm. In another embodiment, the thickness of the first and second glass plates is from 1.6 mm to 2.3 mm. In one aspect, the second interlayer may include at least one edge without the first opaque printing. This edge of the second interlayer without the first opaque printing may be aligned with the edge of the window used for collecting information. Furthermore, this edge of the second interlayer without the first opaque printing may be located 10 mm outside or within 10 mm of the edge of the window used for collecting information.
[0006] In some embodiments, the laminated glass article may further include a second opaque print on at least one of the first and second glass plates. In one aspect, when installed in a vehicle, the window for collecting information may be located within 300 mm of the top edge of the laminated glass article. The optical distortion in the window for collecting information in the laminated glass article can be measured as the average optical distortion over the entire window for collecting information. In another embodiment, the optical distortion in the window for collecting information in the laminated glass article can be measured as the absolute minimum optical distortion within the window for collecting information. Attached Figure Description
[0007] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate one or more exemplary aspects of this disclosure and, together with the detailed description, serve to explain its principles and implementations.
[0008] Figure 1 Glass articles according to embodiments of the present disclosure are shown; and
[0009] Figure 2 A cross-section of a glass article according to an embodiment of the present disclosure is shown. Detailed Implementation
[0010] Various aspects of this disclosure will be described with reference to the accompanying drawings, wherein the same reference numerals are used throughout to refer to the same elements. In the following description, numerous specific details are set forth for purposes of explanation to facilitate a thorough understanding of one or more aspects of this disclosure. However, it will be apparent in some or all instances that any of the aspects described below can be practiced without adopting the specific design details described below.
[0011] Based on all aspects of this disclosure, such as reference Figure 1 and Figure 2As fully illustrated, opaque printing can be provided on the interlayer between the glass plates laminated in the vehicle glass article 100. In one aspect, the interlayer may include opaque printing designed to provide a frame that at least substantially surrounds the window 102 for collecting information. The opaque printing 104 may wholly or partially surround the window 102 for collecting information. In some embodiments, the second interlayer 202 may include at least one edge without opaque printing, which may be aligned with the edge of the window 102 for collecting information without opaque printing. The at least one edge of the second interlayer 202 without opaque printing may be positioned 10 mm outside or within 10 mm of the edge of the window 102 for collecting information. The opaque printing 104 may be applied to one side of the interlayer 202. In laminated glass articles, printed interlayers may be laminated with another interlayer. Printed interlayers may be provided in a smaller size than other interlayers. For example, as Figure 2 As shown, the laminated structure may include a first glass plate 204, a full-size first interlayer 208, a second interlayer 202 with opaque printing, and a second glass plate 206. The first interlayer 208 and the second interlayer 202 may be made of the same substrate, preferably polyvinyl butyral. The second interlayer 202 may be laminated between the first interlayer 208 and the first glass plate 204. In some embodiments, the second interlayer 202 may be laminated between the first interlayer 208 and the second glass plate 206. When laminated in a glass article, the opaque printing 104 on the second interlayer 202 may face the first interlayer 208.
[0012] During the glass bending process, glass sheets may develop some distortion. Furthermore, when multiple glass sheets are laminated together, they may have the same or different distortions. Therefore, laminated glass articles may have distortions caused by the glass sheets. In particular, glass sheets may have distortions along their top edges. The top edge of a glass sheet often refers to the top edge of the glass sheet when the laminated glass article is installed in a vehicle. This distortion may be caused by the bending process, which includes a combination of sag bending and extrusion bending. Figure 1As shown, in a laminated glass article having a window 102 for collecting information, the window 102 for collecting information is preferably located in the region near the top edge of the laminated glass article 100. Preferably, the window 102 for collecting information is located within 200 mm to 300 mm of the top edge of the laminated glass article 100, such that the bottom edge of the window 102 for collecting information is located within 200 mm to 300 mm of the top edge of the laminated glass article 100. The window 102 for collecting information can be positioned such that placing a camera or other sensor high in the vehicle minimizes interference with the driver's view.
[0013] The second interlayer 202, having the opaque printed portion 104, is preferably thinner than the first interlayer 208. Preferably, the second interlayer 202 is thin to avoid large variations in the thickness of the glass article 100. Distortion can occur when the thickness of the interlayer between the glass sheets undergoes a step change. However, this distortion can be used to offset some of the distortion caused by the bending of the glass sheets. The distortion in the glass sheets is typically negative, while the distortion due to the addition of the second interlayer 202 is likely positive in areas of the additional material of the second interlayer 202. Therefore, it is preferable that the second interlayer 202 includes an unprinted area within the window 102 for collecting information. The combination of negative and positive distortion can provide a laminated glass article with a window 102 for collecting information whose distortion is closer to zero than that in a laminated glass article 100 without the second interlayer 202.
[0014] In some embodiments, the second interlayer 202 preferably has a thickness of 20 μm to 50 μm. The thickness determines how much distortion is compensated by the second interlayer 202. For example, the distortion of a second interlayer with a thickness of 50 μm can be further away from zero than that of a second interlayer with a thickness of 20 μm.
[0015] The thickness of the glass plate can also determine the area where distortion compensation can be achieved using the second interlayer 202. A relatively thicker glass plate can be less flexible than a thinner glass plate and may therefore cause a more gradual change in thickness at the edges of the second interlayer 202. This more gradual change in thickness can result in a larger area with distortion due to the thickness variation. For example, in some embodiments, the first glass plate 204 and the second glass plate 206 can have a thickness of 1.0 mm to 2.5 mm, more preferably 1.6 mm to 2.3 mm. A laminated glass article with a relatively thick glass plate can compensate for distortion on a relatively large window 102 used for collecting information.
[0016] According to other aspects of this disclosure, the laminated glass article 100 may also include opaque printing on one or both glass plates 204, 206. The opaque printing 104 on the glass plates may include a border surrounding the perimeter of the glass plates. The opaque printing on the second interlayer 202 may overlap or intersect with the opaque glass printing, so that there are no gaps between the opaque printings when an observer views the laminated glass article. The opaque glass printing may include black enamel printing.
[0017] The second interlayer opaque printed element 104 may or may not extend to the edge of the second interlayer. The area of the opaque printed element 104 may be sufficient to obscure the information acquisition system installed in the vehicle. Larger opaque printed elements may not be desirable in situations that could interfere with or restrict the view of the vehicle's driver and / or passengers.
[0018] Optical distortion can be measured according to ECE-R43 (United Nations Economic Commission for Europe (UN / ECE) Regulation 43 – Harmonized Rules on the Approval of Safety Glass Materials and Their Installation in Vehicles). Alternatively, optical power can be measured using an ISRA Labscan Screen 2D inspection device. The filter setting can be 3 / 2 / 0, corresponding to a solid length of 2 mm. Suitable masking filter settings, such as 6 / 5 / 5 / R, can also be applied. The optical distortion of the window 102 used for information collection can include the average optical distortion on the window 102. In some embodiments, the optical distortion of the window 102 used for information collection can be the absolute minimum or the absolute value of the minimum optical distortion in the window 102 used for information collection.
[0019] According to various aspects of this disclosure, the optical distortion of the window 102 used for collecting information can be closer to zero than the distortion of the laminated glass article 100 in the area outside the window 102 used for collecting information. For example, the optical distortion outside the window 102 used for collecting information can be measured as average optical distortion. For example, the average optical distortion can be measured along a line 10 mm to 100 mm from the outer edge of the opaque print 104 on the second interlayer 202, at a distance from the top of the laminated glass article 100 equal to the distance from the top of the laminated glass article 100 to the midpoint of the window 102 used for collecting information. In one embodiment, the distance from the top of the laminated glass article 100 may include the shortest distance from the top of the laminated glass article 100.
[0020] The foregoing description provided in this disclosure is intended to enable those skilled in the art to make or use this disclosure. Various modifications of this disclosure will be apparent to those skilled in the art, and the common principles defined herein may be applied to other modifications without departing from the spirit or scope of this disclosure. Furthermore, the foregoing description, taken in conjunction with the accompanying drawings, illustrates examples and does not represent only examples that may be implemented or that are within the scope of the claims.
[0021] Furthermore, while elements of the described aspects and / or embodiments may be described or claimed in the singular, the plural is also included unless expressly stated to be limited to the singular. Moreover, unless otherwise stated, all or part of any aspect and / or embodiment may be used in conjunction with all or part of any other aspect and / or embodiment. Therefore, this disclosure is not limited to the examples and designs described herein, but is consistent with the widest scope of the principles and novel features disclosed herein.
[0022] The invention is not disclosed to the public and reserves the right to file one or more applications to claim protection for any additional subject matter that is not within the scope of the narrow claims set forth herein, provided that the foregoing description and accompanying drawings disclose any additional subject matter that is not within the scope of the narrow claims. Furthermore, although narrow claims have been set forth, it should be understood that the scope of the invention (or these inventions) is much broader than that set forth in the present claims. It is intended that broader claims may be filed in applications claiming priority to this application.
Claims
1. A laminated glass article, comprising: First glass plate; First mezzanine; Second interlayer; and Second glass plate; At least a portion of the second interlayer includes a first opaque printed element that at least partially surrounds a window for collecting vehicle information, wherein the optical distortion in the window for collecting information in the resulting laminated glass article is closer to zero than the average optical distortion outside the window for collecting information due to the mutual cancellation of a first optical distortion and a second optical distortion, wherein the first optical distortion is associated with at least one of the first glass plate and the second glass plate, and the second optical distortion is caused by the addition of at least the second interlayer between the first glass plate and the second glass plate.
2. The laminated glass article according to claim 1, wherein the first interlayer and the second interlayer are the same substrate.
3. The laminated glass article according to claim 1, wherein the second interlayer is positioned between the first interlayer and the first glass plate.
4. The laminated glass article according to claim 1, wherein the thickness of the second interlayer is 20µm to 50µm.
5. The laminated glass article according to claim 1, wherein the thickness of the first glass plate and the second glass plate is 1 mm to 2.5 mm.
6. The laminated glass article according to claim 5, wherein the thickness of the first glass plate and the second glass plate is 1.6 mm to 2.3 mm.
7. The laminated glass article of claim 1, wherein the second interlayer includes at least one edge without the first opaque print.
8. The laminated glass article of claim 7, wherein at least one edge of the second interlayer without the first opaque print is aligned with the edge of the window for collecting information.
9. The laminated glass article of claim 7, wherein at least one edge of the second interlayer without the first opaque print is 10 mm outside or within 10 mm of the edge of the window for collecting information.
10. The laminated glass article according to claim 1, further comprising a second opaque print on at least one of the first glass plate and the second glass plate.
11. The laminated glass article of claim 1, wherein when installed in a vehicle, the window for collecting information is located within 300 mm of the top edge of the laminated glass article.
12. The laminated glass article of claim 1, wherein the optical distortion in the window for collecting information in the laminated glass article is measured as an average optical distortion on the window for collecting information.
13. The laminated glass article of claim 1, wherein the optical distortion in the window for collecting information in the laminated glass article is measured as the absolute minimum optical distortion within the window for collecting information.