Secondary image deviation test system and secondary image deviation test method for glass

Abstract

The invention relates to a secondary image deviation test system for glass, comprising: a glass fixer suitable for fixing glass to be tested; the target type light source instrument is arranged on the first side of the glass and irradiates the glass with a test light beam; the visual acquisition module is arranged on a second side, opposite to the first side, of the glass, is oriented towards the target type light source instrument and acquires an image irradiated on the glass by the test light beam; the adjusting bracket assembly is suitable for supporting the visual acquisition module and driving the visual acquisition module to move; and the analysis processing module is connected with the visual acquisition module and is used for analyzing and processing the image acquired by the visual acquisition module so as to obtain a secondary image deviation value at the corresponding test position. The invention further relates to a corresponding auxiliary image deviation testing method. According to the invention, the test efficiency can be improved without moving the glass, the sub-image deviation value is accurately read, and the test cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of glass production, and in particular to a secondary image deviation testing system for glass, and a corresponding secondary image deviation testing method for glass. Background Art

[0002] Secondary image deviation in glass refers to the phenomenon in which light, after multiple reflections or refractions within the glass, creates unexpected double images and shifts in position on the imaging plane. This phenomenon is common in optical lenses, display panels, and vehicle windshields. In particular, secondary image deviation directly impacts the safety of drivers and passengers. When the two glass surfaces are non-parallel, viewing an object through the glass under certain lighting conditions will reveal one or more secondary images in addition to the primary image. If the secondary image deviation is significant, the driver may experience a misperception, which can easily lead to traffic accidents.

[0003] Currently, existing secondary image deviation tests are either performed by direct manual observation by testers, which cannot accurately read the specific secondary image deviation value, or by using a collimating telescope for measurement while moving the glass, which significantly increases the test cost and reduces the test efficiency. Summary of the Invention

[0004] Therefore, the present invention aims to provide an improved secondary image deviation testing system for glass. This system improves testing efficiency without requiring glass movement, accurately reads secondary image deviation values, and reduces testing costs. The present invention also aims to provide a corresponding secondary image deviation testing method for glass.

[0005] According to a first aspect of the present invention, a secondary image deviation testing system for glass is provided, wherein the secondary image deviation testing system at least comprises:

[0006] - a glass holder configured and adapted to hold the glass to be tested;

[0007] a target light source arranged on a first side of the glass and adapted to illuminate the glass with a test light beam;

[0008] - a visual acquisition module, the visual acquisition module being arranged on a second side of the glass opposite to the first side, wherein the visual acquisition module is configured to be oriented toward the target light source and to acquire an image illuminated by the test light beam onto the glass;

[0009] - an adjusting bracket assembly, the adjusting bracket assembly being configured to support the vision acquisition module and drive the vision acquisition module to move; and

[0010] - an analysis and processing module, connected to the visual acquisition module and configured to analyze and process the images acquired by the visual acquisition module to obtain a secondary image deviation value at a corresponding test position.

[0011] Compared to the prior art, in the secondary image deviation testing system for glass according to the present invention, a target-type light source illuminates the glass with a test beam from a first side, and a visual acquisition module captures an image of the test beam on the glass from a second side, oriented toward the target-type light source. The visual acquisition module is supported and driven by an adjustable support assembly to scan different test locations on a specific area of ​​the glass, allowing the analysis and processing module to accurately obtain the secondary image deviation value at the corresponding test location. The visual acquisition module can thus be easily moved by adjusting the support assembly to scan different test locations on the glass without moving the glass, significantly improving testing efficiency and reducing equipment and testing costs.

[0012] Exemplarily, the adjustment bracket assembly includes support arms hinged to each other, and the movement of the visual acquisition module in the height direction and / or horizontal direction is achieved by adjusting the folding degree of the support arms; and / or, the adjustment bracket assembly can be adjusted manually and / or automatically according to a preset path.

[0013] Exemplarily, the adjustment bracket assembly includes a universal joint, and the vision acquisition module is assembled on the universal joint to allow the vision acquisition module to always be oriented toward the target light source instrument.

[0014] Exemplarily, the secondary image deviation testing system includes a positioner, which is configured to emit positioning rays, wherein the positioner is fixedly arranged on the vision acquisition module.

[0015] Exemplarily, the target-type light source apparatus includes a light source and a target element arranged in front of the light source, wherein the target element is configured as a ring target or a point ring target.

[0016] Exemplarily, the glass holder is configured to rotate the glass around a horizontal direction so that a tangential direction of the glass at the test position is substantially perpendicular to an orientation direction of the vision acquisition module toward the target light source.

[0017] Exemplarily, the analysis and processing module is configured to, when a maximum secondary image deviation value in a specific area is obtained and / or the obtained secondary image deviation value is greater than a set threshold, send a photo-taking instruction to the visual acquisition module, so that the visual acquisition module takes a photo to capture an image at the corresponding test position.

[0018] Exemplarily, the secondary image deviation testing system is configured for a front windshield of a vehicle.

[0019] According to a second aspect of the present invention, a secondary image deviation test method for glass is provided, wherein the secondary image deviation test method is implemented by a secondary image deviation test system according to the present invention, wherein the secondary image deviation test method comprises at least the following steps:

[0020] S1: Fix the glass to be tested by the glass holder;

[0021] S2: irradiating the glass with a test beam through a target light source instrument;

[0022] S3: orienting the visual acquisition module toward the target light source instrument and acquiring an image irradiated by the test light beam onto the glass;

[0023] S4: adjusting the support assembly to drive the visual acquisition module to move, so as to acquire images of the glass at different test positions in a specific area;

[0024] S5: The analysis and processing module receives and analyzes the image captured by the visual acquisition module to obtain the secondary image deviation value at the corresponding test position.

[0025] Exemplarily, the secondary image deviation test method further includes step S6: when a maximum secondary image deviation value in a specific area is obtained and / or the obtained secondary image deviation value is greater than a set threshold, a photo-taking instruction is sent to the visual acquisition module, so that the visual acquisition module takes a photo to capture an image at the corresponding test position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be described in more detail below with reference to the accompanying drawings, so that the principles, features and advantages of the present invention can be better understood. The accompanying drawings include:

[0027] Figure 1 A schematic diagram of a secondary image deviation testing system according to an exemplary embodiment of the present invention is shown;

[0028] Figure 2a and Figure 2b Schematic diagrams of target elements of a target-type light source instrument according to different exemplary embodiments of the present invention are respectively shown;

[0029] Figure 3a and Figure 3b A side view and a partial view of an adjustment bracket assembly according to an exemplary embodiment of the present invention are respectively shown;

[0030] Figure 4 A schematic flow chart of a secondary image deviation testing method according to an exemplary embodiment of the present invention is shown. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial technical effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0032] This specification provides method operation steps as described in the embodiments or flow charts, but based on routine or non-creative work, more or fewer operation steps may be included. The order of steps listed in the embodiments is only one way of executing the steps among many, and does not represent the only execution order.

[0033] Figure 1 1 is a schematic diagram of a secondary image deviation testing system 100 for a glass 11 according to an exemplary embodiment of the present invention. Here, the glass 11 is particularly a front windshield of a vehicle.

[0034] like Figure 1 As shown, a secondary image deviation test system 100 includes a glass holder 10 configured to secure a glass 11 to be tested. Specifically, glass holder 10 allows glass 11 to be rotated about the horizontal direction to achieve a desired angle of glass 11, which corresponds to the actual installation angle of the windshield in the vehicle. Glass 11 may have multiple subareas or specific regions, each of which is required to meet different optical performance requirements. Secondary image deviation test system 100 can test each subarea separately and set different measurement criteria for each subarea.

[0035] like Figure 1 As shown, the secondary image deviation test system 100 includes a target light source 20, which is arranged on a first side of the glass 11 or glass holder 10 and is configured to illuminate the glass 11 with a test beam 24, thereby generating a primary image and possible secondary images on the glass 11. The target light source 20 comprises a closed housing 21, a light source 22 disposed within the housing 21, and a target element 23 disposed in front of the light source 22. The interior of the housing 21 is coated with, for example, a matte white coating, while the target element 23 is coated with an opaque coating, such as black paper or matte black paint, to achieve a desired transmission pattern, thereby forming a corresponding beam shape for the test beam 24. The distance between the target light source 20 and the glass 11 is predetermined by experimental data to meet the small-angle approximation condition and reduce sensitivity to alignment errors. This distance is preferably no less than 7 meters. In particular, during testing, the target light source 20 is disposed in a dark room or dark location.

[0036] like Figure 1As shown, the secondary image deviation test system 100 includes a vision acquisition module 30 disposed on a second side of the glass 11 or the glass holder 10, opposite the first side. The vision acquisition module 30 is configured to be oriented toward the target light source 20 and to capture an image of the test beam 24 irradiated on the glass 11. The image includes a primary image and, if present, at least one secondary image. The vision acquisition module 30 can be a camera. The distance between the vision acquisition module 30 and the glass 11 should correspond to the distance between the driver or front passenger and the front windshield to closely simulate the actual vehicle interior environment.

[0037] For example, Figure 1 As shown, by adjusting the glass holder 10 to rotate the glass 11 around the horizontal direction, the tangent direction of the glass 11 at the test position is substantially perpendicular to the orientation direction of the visual acquisition module 30 toward the target light source 20, thereby avoiding the aberration interference of non-vertical incidence and suppressing the image shift effect, thereby more accurately reflecting the degree of deviation of the secondary image of the glass 11 itself.

[0038] like Figure 1 As shown, the secondary image deviation testing system 100 includes an adjustment bracket assembly 40 , which is configured to support the vision acquisition module 30 and drive the vision acquisition module 30 to move, particularly in a vertical plane, to allow the vision acquisition module 30 to scan different test positions in a specific area of ​​the glass 11 .

[0039] like Figure 1 As shown, the secondary image deviation test system 100 includes an analysis and processing module 50 connected to the vision acquisition module 30 to receive images captured by the vision acquisition module 30 and to analyze and process the images to obtain a secondary image deviation value at a corresponding test position. The secondary image deviation value is the offset of the secondary image relative to the primary image. To this end, the analysis and processing module 50 has a distance measurement function. In particular, the analysis and processing module 50 is configured as a computer equipped with image processing software.

[0040] Therefore, the visual acquisition module 30 can be easily moved by adjusting the bracket assembly 40 to scan a specific area of ​​the glass 11, thereby obtaining the secondary image deviation values ​​of different test positions of the glass 11 without moving the glass, which can significantly improve test efficiency and reduce equipment expenses and test costs.

[0041] For example, the analysis and processing module 50 is configured to, upon acquiring the maximum secondary image deviation value in a specific region of the glass 11, send a photographing instruction to the visual acquisition module 30, causing the visual acquisition module 30 to capture an image at the corresponding test position. Alternatively, the analysis and processing module 50 may send a photographing instruction to the visual acquisition module 30 when the acquired secondary image deviation value exceeds a set threshold, where the set threshold is determined based on experimental and / or empirical data.

[0042] Figure 2a and Figure 2b Schematic diagrams of the target element 23 of the target-type light source apparatus 20 according to different exemplary embodiments of the present invention are respectively shown.

[0043] like Figure 2a As shown, the target element 23 is configured as a ring target and is provided with a ring pattern 1, so that the target light source device 20 emits a ring-shaped test beam 24. For example, when the ring of the primary image and the ring of the secondary image are completely separated, it is determined that the deviation value of the secondary image is greater than a set threshold value and a photo is taken to capture the image at the corresponding test position.

[0044] like Figure 2b As shown, the target element 23 is configured as a dot-ring target and is provided with a ring pattern 1 and a dot pattern 2 located at the center of the ring pattern 1, so that the target-type light source device 20 emits a ring-shaped test beam 24 having a center point. For example, when the center point of the secondary image exceeds the ring of the primary image, it is determined that the secondary image deviation value is greater than a set threshold value, and a photo is taken to capture the image at the corresponding test position.

[0045] Figure 3a and Figure 3b A side view and a partial view, respectively, of an adjustment bracket assembly 40 according to an exemplary embodiment of the present invention are shown.

[0046] For example, Figure 3a As shown, the adjustable bracket assembly 40 includes support arms 41 hingedly connected to each other via hinges 42. Adjusting the degree of folding of the support arms enables the visual acquisition module 30 supported by the adjustable bracket assembly 40 to move in the height direction. When the support arms 41 are folded relative to each other, the visual acquisition module 30 moves downward in the height direction, while when the support arms 41 are unfolded relative to each other, the visual acquisition module 30 moves upward in the height direction. It is also conceivable that the hinged support arms 41 can be used to enable horizontal movement of the visual acquisition module 30. Thus, the adjustable bracket assembly 40 can easily achieve planar movement of the visual acquisition module 30. The support arms 41 can be locked relative to each other at any desired folding angle.

[0047] For example, Figure 3aAs shown, the adjustable bracket assembly 40 includes a base 43, which stably positions the adjustable bracket assembly 40 on the ground and prevents the visual acquisition module 30 from unexpected positional changes during testing. It is contemplated that the base 43 may be provided with a slide that cooperates with a guide rail on the ground to facilitate horizontal movement of the adjustable bracket assembly 40.

[0048] For example, the adjustable bracket assembly 40 can be manually adjusted, for example, by manually adjusting the degree to which the support arms 41 are folded relative to each other and the horizontal position of the adjustable bracket assembly 40, thereby allowing the visual acquisition module 30 to flexibly scan a desired position on the glass 11. However, it is also possible that the adjustable bracket assembly 40 can be automatically adjusted according to a preset path, which allows the visual acquisition module 30 to efficiently scan a specific area of ​​the glass 11 and significantly reduces the workload of the tester.

[0049] For example, Figure 3b As shown, the adjustment bracket assembly 40 includes a universal joint 44, and the vision acquisition module 30 is assembled on the universal joint. The vision acquisition module 30 can be flexibly rotated through the universal joint 44, so that the vision acquisition module 30 is always oriented toward the target light source 20 when scanning different test positions of the glass 11 and can accurately and clearly capture the image of the test light beam 24 irradiated on the glass 11.

[0050] For example, Figure 3b As shown, the secondary image deviation testing system 100 includes a positioner 60 configured to emit positioning radiation, wherein the positioner 60 is fixedly disposed on the vision acquisition module 30, particularly on the top of the vision acquisition module 30. The positioning radiation of the positioner 60 can determine the orientation of the vision acquisition module 30.

[0051] Figure 4 A schematic flow chart of a secondary image deviation testing method according to an exemplary embodiment of the present invention is shown. The secondary image deviation testing method is implemented by the secondary image deviation testing system 100 according to the present invention.

[0052] like Figure 4 As shown, the secondary image deviation testing method according to the present invention comprises at least the following steps:

[0053] S1: Fixing the glass 11 to be tested by the glass holder 10, the glass is especially the front windshield of the vehicle;

[0054] S2: Irradiating the glass 11 with a test beam 24 by a target light source apparatus 20, wherein the target light source apparatus comprises a light source 22 and a target element 23 arranged in front of the light source 22, wherein the target element is particularly configured as a ring target or a point ring target;

[0055] S3: Orienting the vision acquisition module 30 toward the target light source 20 and acquiring an image of the test light beam 24 irradiated on the glass 11, the image including a primary image and at least one secondary image that may exist, wherein, in particular, the glass 11 is rotated about a horizontal direction by the glass holder 10 so that a tangential direction of the glass 11 at the test position is substantially perpendicular to an orientation direction of the vision acquisition module 30 toward the target light source 20;

[0056] S4: driving the visual acquisition module 30 to move, in particular, in a vertical plane, by adjusting the support assembly 40 to scan and acquire images of the glass 11 at different test positions in a specific area, wherein the adjustable support assembly 40 can be adjusted manually and / or automatically according to a preset path;

[0057] S5: The analysis and processing module 50 receives and analyzes the image captured by the visual acquisition module 30 to obtain the secondary image deviation value at the corresponding test position.

[0058] Exemplarily, the secondary image deviation test method according to the present invention further includes step S6: when the maximum secondary image deviation value in a specific area of ​​the glass 11 is obtained and / or the obtained secondary image deviation value is greater than a set threshold, the analysis and processing module 50 sends a photo-taking instruction to the visual acquisition module 30, so that the visual acquisition module 30 takes a photo to capture an image at the corresponding test position.

[0059] The above explanation of the embodiments only describes the present invention within the framework of the examples. Of course, the individual features of the embodiments can be freely combined with one another as long as it makes technical sense, without departing from the framework of the present invention.

[0060] Other advantages and alternative embodiments of the present invention will be readily apparent to those skilled in the art. Therefore, the present invention in its broader sense is not limited to the specific details, representative configurations, and exemplary embodiments shown and described. Rather, various modifications and substitutions may be made by those skilled in the art without departing from the basic spirit and scope of the present invention.

Claims

1. A secondary image deviation testing system (100) for glass (11), characterized in that: The secondary image deviation testing system (100) at least comprises: - a glass holder (10) adapted to hold a glass (11) to be tested; a target light source (20) arranged on a first side of the glass (11) and configured to illuminate the glass (11) with a test light beam (24); - a visual acquisition module (30), the visual acquisition module (30) being arranged on a second side of the glass (11) opposite to the first side, wherein the visual acquisition module (30) is configured to be oriented toward the target light source (20) and to acquire an image irradiated by the test light beam (24) onto the glass (11); - an adjustment bracket assembly (40), the adjustment bracket assembly (40) being configured to support the vision acquisition module (30) and drive the vision acquisition module (30) to move; and - an analysis and processing module (50), which is connected to the visual acquisition module (30) and is configured to analyze and process the image acquired by the visual acquisition module (30) to obtain a secondary image deviation value at a corresponding test position.

2. The secondary image deviation test system (100) according to claim 1, characterized in that: The adjustment bracket assembly (40) comprises support arms (41) hinged to each other, and the movement of the visual acquisition module (30) in the height direction and / or the horizontal direction is achieved by adjusting the folding degree of the support arms (41); and / or The adjustment bracket assembly (40) can be adjusted manually and / or automatically according to a preset path.

3. The secondary image deviation testing system (100) according to claim 1 or 2, characterized in that: The adjustment bracket assembly (40) includes a universal joint (44), and the vision acquisition module (30) is assembled on the universal joint (44) to allow the vision acquisition module (30) to always be oriented toward the target light source instrument (20).

4. The secondary image deviation test system (100) according to any one of the preceding claims, characterized in that: The secondary image deviation testing system (100) comprises a positioner (60) configured to emit positioning rays, wherein the positioner (60) is fixedly arranged on the vision acquisition module (30).

5. The secondary image deviation testing system (100) according to any one of the preceding claims, characterized in that: The target-type light source instrument (20) comprises a light source (22) and a target element (23) arranged in front of the light source (22), wherein the target element (23) is configured as a ring target or a point ring target.

6. The secondary image deviation test system (100) according to any one of the preceding claims, characterized in that: The glass holder (10) is configured to rotate the glass (11) around a horizontal direction so that a tangential direction of the glass (11) at a test position is substantially perpendicular to an orientation direction of the vision acquisition module (30) toward the target light source instrument (20).

7. The secondary image deviation testing system (100) according to any one of the preceding claims, characterized in that: The analysis and processing module (50) is configured to, when a maximum secondary image deviation value in a specific area is obtained and / or the obtained secondary image deviation value is greater than a set threshold, send a photographing instruction to the visual acquisition module (30), so that the visual acquisition module (30) takes a photograph to capture an image at a corresponding test position.

8. The secondary image deviation testing system (100) according to any one of the preceding claims, characterized in that: The secondary image deviation testing system (100) is configured for a front windshield (11) of a vehicle.

9. A method for testing the deviation of a secondary image of glass (11), characterized in that: The secondary image deviation test method is implemented by a secondary image deviation test system (100) according to any one of claims 1 to 8, wherein the secondary image deviation test method at least comprises the following steps: S1: Fix the glass to be tested (11) by means of a glass holder (10); S2: irradiating the glass (11) with a test beam (24) through a target light source instrument (20); S3: orienting the visual acquisition module (30) toward the target light source instrument (20) and acquiring an image irradiated by the test light beam (24) onto the glass (11); S4: driving the visual acquisition module (30) to move by adjusting the support assembly (40) to acquire images of the glass (11) at different test positions in a specific area; S5: The analysis and processing module (50) receives and analyzes the image captured by the visual acquisition module (30) to obtain the secondary image deviation value at the corresponding test position.

10. The secondary image deviation testing method according to claim 9, wherein: The secondary image deviation test method further comprises step S6: when a maximum secondary image deviation value in a specific area is obtained and / or the obtained secondary image deviation value is greater than a set threshold, sending a photographing instruction to the visual acquisition module (30), so that the visual acquisition module (30) takes a photograph to capture an image at a corresponding test position.

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