Sun visor, method for determining front end boundary of sun visor, and vehicle

Abstract

The present invention provides a sun hood, a method for determining the front end boundary of the sun hood, and a vehicle, and belongs to the technical field of front-view camera accessory arrangement. The front end boundary position of the sun hood during arrangement is determined by the method for determining the front end boundary of the front-view camera sun hood of the present application, and the area where stray light at the instrument panel position in the vehicle affects the front-view camera is considered. The light path analysis is used to find the front end boundary of the affected area where light reflected from the windshield enters. The boundary position where the sun hood is required to block the stray light is determined based on the light path, thereby reducing the size of the sun hood while meeting the need to block stray light in the vehicle, thereby preventing it from affecting the shooting and recognition of the front-view camera.

Description

Technical Field

[0001] The present invention relates to the technical field of arrangement of automobile front-view camera accessories, and in particular to a light shield, a method for determining a front end boundary of the light shield, and a vehicle. Background Art

[0002] The Advanced Driving Assistance System (ADAS) utilizes a variety of sensors installed on the vehicle, including millimeter-wave radar, lidar, monocular / binocular cameras, and satellite navigation, to sense the surrounding environment at any time while the car is driving, collect data, and identify, detect, and track static and dynamic objects. Combined with navigation map data, it performs systematic calculations and analysis, allowing the driver to be aware of potential dangers in advance, effectively increasing the comfort and safety of driving. The forward-looking camera is a key component of this system.

[0003] Today's automotive industry is increasingly demanding intelligent driving, and the visual recognition accuracy of forward-facing cameras is also increasing. During actual driving, stray light from inside the vehicle can be projected onto the windshield, affecting the camera's visual recognition, reducing recognition accuracy, image quality, and contrast, leading to misjudgment of road conditions. Therefore, a light shield is required for forward-facing cameras to eliminate this effect and improve image quality. The front end of the hood's lower base is bonded to the windshield, making the hood large and unsightly. Furthermore, as new car designs increasingly favor low-slung, sporty styling, the windshield has a large inclination angle (increasing the angle with the vertical and decreasing the angle with the horizontal). This requires the front end of the light shield to extend to the windshield, making it particularly large. This is not only unsightly but also affects the vehicle's forward and upward field of view. Therefore, how to minimize the size of the light shield while simultaneously shielding the forward-facing camera from stray light has become a pressing issue. Summary of the Invention

[0004] In order to overcome the above technical problems, the present invention provides a sunshade, a method for determining the front end boundary of the sunshade, and a vehicle, so as to solve the problem of how to reduce the size of the sunshade while meeting the requirement of shielding stray light.

[0005] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0006] A method for determining the lower boundary of a front camera's field of view envelope comprises the following steps: determining a ground line where a vehicle is located; determining a blind spot target line, wherein the blind spot target line is perpendicular to the ground line, and the distance between the perpendicular intersection point and the projection point of the vehicle front end on the ground line is the blind spot distance; and determining the plane where the blind spot target line and the focal point of the front camera are connected is the lower boundary of the field of view envelope.

[0007] Preferably, the ground line is a one-person ground line.

[0008] A sunshade connected to a mounting base of a rearview mirror inside a vehicle, the sunshade comprising a lower base plate, a left upright plate, a right upright plate, and a rear upright plate, wherein the position of the lower base plate is defined by the lower boundary determined by the aforementioned method;

[0009] The rear vertical plate is arranged at the front end of the front-view camera, and the rear vertical plate is provided with an opening, and the opening is located in front of the front-view camera lens. The rear ends of the lower base plate, the left vertical plate, and the right vertical plate are respectively connected to the rear vertical plate, and the lower ends of the left vertical plate and the right vertical plate are respectively connected to the left and right sides of the lower base plate.

[0010] Preferably, the vertical distance between the front end of the lower base plate and the lower boundary of the front camera field of view envelope is 2 mm.

[0011] A method for determining a front edge of a light shield comprises the following steps:

[0012] Step S1: a front-view camera and a sunshade are arranged in a vehicle, wherein the sunshade is the sunshade described above;

[0013] Step S2: Determine the blocked area based on the characteristic area of ​​the instrument panel that needs to be blocked and the area where objects placed on the instrument panel will form harmful reflections on the front windshield. The position of the instrument panel surface at the front edge of the blocked area is defined as the front edge boundary line.

[0014] Step S3: performing optical path analysis on the light emitted from the focus of the front-view camera to obtain the light reflected by the inner surface of the front windshield and directed toward the front boundary line described in step S2;

[0015] Step S4: The intersection of the light path in step S3 and the lower bottom plate of the light shield is used as the front boundary line of the light shield, and the vertical plane where the front boundary line of the light shield is located is the front boundary of the light shield.

[0016] Preferably, the instrument panel features in step S2 include instrument panel decorations, a head-up display, a center speaker, and an air outlet.

[0017] Preferably, the characteristic area of ​​the instrument panel that needs to be shielded in step S2 is: a vertical plane where the front end of the instrument panel close to the front windshield is located as the dividing line, and an area of ​​the instrument panel located on the side of the dividing line away from the front windshield;

[0018] In step S2, the area where objects placed on the instrument panel will form harmful reflections on the front windshield is: the area where the vertical distance between the instrument panel surface and the front windshield is greater than or equal to the impact height H.

[0019] Preferably, the impact height H is 80 mm.

[0020] Preferably, the front-view camera is connected to a mounting base of a rearview mirror inside the vehicle, a light shield is installed at the front end of the front-view camera, and the front end boundary of the light shield is determined by the aforementioned method for determining the front end boundary of the light shield.

[0021] Preferably, a defrost and defogging line is installed on the inner side of the front windshield, and the defrost and defogging line is located within the shooting area of ​​the front camera. Compared with the prior art, the beneficial effects of the technical solution of the present invention are:

[0022] The present invention provides a sunshade, a method for determining a front end boundary of the sunshade, and a vehicle.

[0023] 1. The method of determining the front end boundary of the sun hood of the present application is used to determine the front end boundary position of the sun hood when it is arranged. Considering the area where the stray light at the instrument panel position in the vehicle affects the front-view camera, the light path analysis is used to find the light path of the light reflected by the windshield entering the front end boundary of the affected area. According to the light path, the boundary position where the sun hood needs to block the stray light is determined, thereby reducing the size of the sun hood while meeting the need to block the stray light in the vehicle, preventing it from affecting the shooting and recognition of the front-view camera.

[0024] 2. The reduced size of the sun visor not only has a good visual effect and is suitable for a variety of car shapes, especially those with relatively horizontal front windshields; it also does not affect the driver or passenger's need for forward vision.

[0025] 3. By setting a defrost and defogger line on the front windshield, it can prevent the front windshield from fogging up due to the temperature difference between the inside and outside of the car in extreme weather, which may affect the shooting of the front camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the principle for determining the lower boundary of the front camera's field of view envelope;

[0027] Figure 2 A schematic diagram of the position between the light shield and the boundary of the front camera's field of view;

[0028] Figure 3 This is a schematic diagram of the position between the sun hood and the front windshield;

[0029] Figure 4 It is a schematic diagram of the structure of the sunshade and the front-view camera from a top view;

[0030] Figure 5 A schematic flow chart of a method for determining a front edge of a light shield;

[0031] Figure 6 This is a top-down diagram of the instrument panel's blocked area;

[0032] Figure 7 It is a side schematic diagram of the instrument panel and light path;

[0033] Figure 8 A side view of the front edge of the sunshade and the light path;

[0034] Figure 9 This is a side view structural diagram of the front edge of the sun visor being reduced relative to the front windshield;

[0035] Figure 10 Schematic diagram of the internal structure of the vehicle with a sun visor and defrost and defogging lines overlooking the vehicle;

[0036] Figure 11 for Figure 10 An enlarged schematic diagram of the structure of the middle sunshade and the defrost and defogger lines;

[0037] Among them: 1. Front-view camera; 2. Vehicle; 3. Ground line; 4. Sun hood; 5. Rearview mirror mounting base; 6. Front windshield; 7. Instrument panel; 8. Instrument panel trim; 9. Head-up display; 10. Center speaker; 11. Air outlet; 12. Light path; 13. Front edge of sun hood; 14. Defrost and defogger line;

[0038] 101. Front camera field of view envelope boundary; 401. Lower base plate; 402. Left vertical plate; 403. Right vertical plate; 404. Rear vertical plate. DETAILED DESCRIPTION

[0039] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0040] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0041] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0042] This embodiment provides a method for determining the lower boundary of the field of view envelope of a forward-looking camera, comprising the following steps: determining the ground line where the vehicle is located; determining a blind spot target line, where the blind spot target line is perpendicular to the ground line, and the distance between the vertical intersection and the projection point of the front end of the vehicle on the ground line is the blind spot distance; and the plane where the blind spot target line and the focal point of the forward-looking camera are connected is the lower boundary of the field of view envelope.

[0043] The boundary of the front camera's field of view envelope is determined based on the blind spot or the camera performance provided by the front camera manufacturer. The lower boundary is to ensure that it can capture areas outside the blind spot target. The blind spot target is generally set according to the needs of the vehicle manufacturer. For example, the blind spot target is 3 meters in front of the vehicle, that is, the area within 3 meters in front of the vehicle is the blind spot, and the area further than 3 meters in front of the vehicle needs to be captured by the front camera 1. Therefore, the lower boundary of the front camera's field of view envelope is determined by combining the blind spot target with the front camera focus. According to the ground line where the vehicle is located, the blind spot target line is located in the same plane. The blind spot target line is determined by the blind spot distance from the projection point of the front end of the vehicle on the ground to the vehicle's forward direction. The field of view below the focus of the front camera should include the blind spot target line, that is, the plane where the lower boundary of the front camera's field of view envelope is located passes through the focus and the blind spot target line.

[0044] refer to Figure 1 As shown, after the front-view camera 1 is arranged at a suitable position, the focus O on the optical axis of the front-view camera 1 is determined as the starting point, the blind spot distance is the blind spot D1 in front of the vehicle is 3.5m, the ground line 3 is the one-person ground line, point B is the projection point of the front end of the outer contour of the vehicle 2 on the ground line, the distance between point A and point B is D1, point A is the vertical intersection of the blind spot target line and the ground line, then a straight line OA is drawn through the starting point O to intersect with the one-person ground line 3, then the plane where the straight line OA lies is the lower boundary of the front-view camera field of view envelope boundary; similarly, the upper boundary and left and right boundaries of the front-view camera field of view envelope boundary can also be determined according to the blind spot target by referring to the aforementioned method, or the left and right boundaries and upper boundaries are given by the manufacturer of the front-view camera 1 based on performance, so the upper boundary and left and right boundaries of the front-view camera field of view envelope boundary are not further described.

[0045] In a further embodiment, the ground line is a one-person ground line. The one-person ground line is the ground line of the vehicle when there is only one driver in the vehicle. According to needs, it can be determined as an empty ground line or a fully loaded ground line.

[0046] In another embodiment, referring to Figure 2-4As shown, a sunshade is provided, which is connected to the vehicle interior rearview mirror mounting base 5, and the sunshade 4 includes a lower base plate 401, a left vertical plate 402, a right vertical plate 403 and a rear vertical plate 404. The position of the lower base plate 401 is limited by the lower boundary determined by the method for determining the lower boundary of the front camera field of view envelope boundary mentioned above; the front end of the lower base plate 401 contacts the front windshield 6 and is located below the lower boundary of the front camera field of view envelope boundary 101 to prevent it from blocking the field of view of the front camera 1, and the rear vertical plate 404 is arranged at the front end of the front camera, and the rear vertical plate 404 is provided with an opening, and the opening is located in front of the front camera lens, the rear ends of the lower base plate 401, the left vertical plate 402, and the right vertical plate 403 are respectively connected to the rear vertical plate 404, and the lower ends of the left vertical plate 402 and the right vertical plate 403 are respectively connected to the left and right sides of the lower base plate 401. The front ends of the left vertical plate 402, the right vertical plate 403 and the rear vertical plate 404 are all connected to the front windshield 6 and have the same curvature CD as the front windshield 6. Similarly, the left vertical plate 402 and the right vertical plate 403 are set according to the left and right boundary positions of the front camera field of view envelope boundary 101 to ensure that the field of view of the front camera 1 is not blocked by the left vertical plate 402 and the right vertical plate 403.

[0047] In a further embodiment, reference is made to Figure 3-4 The vertical distance between the front end of the lower base plate 401 and the lower boundary of the front camera field of view envelope boundary 101 is 2mm to prevent the field of view of the front camera 1 from being accidentally blocked; the lateral distance D2 between the front end of the left vertical plate 402 and the left boundary of the front camera field of view envelope boundary 101 is 2mm. Similarly, the lateral distance between the front end of the right vertical plate 403 and the right boundary of the front camera field of view envelope boundary 101 is set to 2mm, and a certain safety distance is set from the front camera field of view envelope boundary 101.

[0048] In a further embodiment, the diameter of the opening is 3 mm larger than the diameter of the lens of the front-view camera 1, and the distance between the edge of the opening and the edge of the lens of the front-view camera 1 is greater than 1.5 mm, thereby ensuring the shooting area of ​​the front-view camera 1, and can also be adjusted according to the situation.

[0049] In another embodiment, referring to Figure 5 As shown, a method for determining the front edge of a light shield is provided, comprising the following steps:

[0050] refer to Figure 2-4 , step S1: the front-view camera 1 and the sunshade 4 are arranged in the vehicle, and the sunshade 4 is the aforementioned sunshade 4;

[0051] Step S2: Determine the blocked area based on the characteristic area of ​​the instrument panel that needs to be blocked and the area where objects placed on the instrument panel will form harmful reflections on the front windshield. The position of the instrument panel surface at the front edge of the blocked area is defined as the front edge boundary line.

[0052] Step S3: performing optical path analysis on the light emitted from the focus of the front-view camera to obtain the light reflected by the inner surface of the front windshield and directed toward the front boundary line determined in step S2;

[0053] Step S4: The intersection of the light path in step S3 and the lower base plate 401 of the light shield 4 is used as the front boundary line of the light shield, and the vertical plane where the front boundary line of the light shield is located is the front boundary of the light shield.

[0054] The position of the front edge of the hood of the front-view camera 1 determines the size of the hood, such as Figure 2 and Figure 3 The shading hood 4 is arranged according to the front camera field of view envelope boundary 101, and the end of the shading hood 4 is arranged according to the position of the front camera field of view envelope boundary 101 so as not to affect the front camera 1 to shoot the front; Figure 3 The front end of the sunshade 4 will be fitted and connected to the front windshield 6, and the front end of the side panel is set to a curved surface CD with the same curvature as the front windshield 6, and is fitted and overlapped with the front windshield 6, which will make the size of the sunshade 4 larger. In particular, when the inclination angle of the front windshield 6 is large, that is, the angle between the front windshield 6 and the horizontal direction is reduced, the front end of the sunshade 4 needs to extend a long distance to fit the front windshield 6, resulting in an increase in the size of the sunshade 4, affecting the driver's field of vision and sensory experience;

[0055] Therefore, the front edge of the camera is determined by the method for determining the front edge of the front camera hood of this embodiment. When the hood 4 is arranged, its front edge position only needs to reach the vertical plane where the front edge is located to complete the effect of the stray light in the vehicle, which can reduce the size of the hood 4. In the specific implementation process, after the front camera 1 is installed in the vehicle, Figure 3As shown, it is generally installed at the position of the rearview mirror mounting base 5. After the installation is completed, the front camera field of view envelope boundary 101 is determined, and the above-mentioned method is used to determine the lower boundary of the front camera field of view envelope boundary 101. Since the sun visor 4 is mainly on the inner side of the front windshield 6, the intersection of the front camera field of view envelope boundary 101 and the front windshield 6 can define the lower boundary and the left and right boundaries. The stray light in the car is mainly projected onto the front windshield 6 through the bottom of the sun visor 4. The bright light at the instrument panel will affect the front camera 1, and will form harmful reflections on the front windshield 6 to affect the front camera 1. Therefore, when determining the blocked area, the characteristic area of ​​the instrument panel that needs to be blocked is combined with the area where the items placed on the instrument panel will form harmful reflections on the front windshield. The front end boundary of the blocked area, that is, the area closest to the front windshield, is determined. 6 is located at the front boundary line. After determining the position on the instrument panel that affects the front-view camera 1, the optical path of the light emitted from the focus of the front-view camera 1 is analyzed to obtain the light that is reflected by the inner surface of the front windshield 6 and then directed to the front boundary line; the intersection of the light path and the lower base plate 401 of the sun visor 4 is used as the front boundary line of the sun visor, and the plane in the vertical direction where the front boundary line of the sun visor is located is the front boundary of the sun visor, that is, when arranging the sun visor 4, the front end of the sun visor 4 is limited to the vertical plane position where the front boundary of the sun visor is located, which can block the stray light emitted from the instrument panel at the front boundary of the area that affects the front-view camera 1, and can block the stray light emitted from the blocked area on the entire instrument panel. After the front end of the sun visor 4 is arranged, the size can be reduced while meeting the need to block stray light in the car;

[0056] This is equivalent to a structure in which the front end of the original sun hood 4 extends to the front windshield 6. After determining the front end boundary of the sun hood, the original sun hood 4 is cut off from the front end boundary of the sun hood, and the part close to the front windshield 6 is discarded, and the sun hood 4 behind the front end boundary of the sun hood is retained, that is, the size of the sun hood 4 in the prior art is reduced.

[0057] In a further embodiment, reference is made to Figure 6 As shown, the instrument panel features in step S2 include instrument panel decoration 8, head-up display 9, center speaker 10, and air outlet 11. Among them, the head-up display is referred to as HUD; the instrument panel is referred to as IP.

[0058] In a further embodiment, the characteristic area of ​​the instrument panel that needs to be blocked in step S2 is: the vertical plane where the front end of the instrument panel is close to the front windshield is located as the interface, and the area of ​​the instrument panel located on the side of the interface away from the front windshield; the light generated by the instrument panel in this area will be captured by the front-view camera and affect the operation of the front-view camera, that is, the position on the instrument panel that generates stray light is found. The area behind the position on the instrument panel closest to the front windshield may affect the front-view camera, so the area behind the interface is used as the blocking area;

[0059] In step S2, the area where objects placed on the dashboard will form harmful reflections on the front windshield is: the area where the vertical distance between the dashboard surface and the front windshield is greater than or equal to the impact height H. Some objects will be placed on the dashboard, and these objects will form harmful reflections on the front windshield. These areas also need to be blocked, but because some positions are close to the front windshield, there is no excessive risk of glare, and it will not affect the shooting effect of the front-view camera. Therefore, the areas close to the front windshield are no longer considered, and only the area where the distance from the front windshield is greater than or equal to the impact height H is used as the blocked area; by combining the two, the blocked area that needs to be blocked is determined.

[0060] In a further embodiment, the impact height H is 80 mm, which can be adjusted by those skilled in the art according to the circumstances.

[0061] In another embodiment, referring to the attached Figure 6-9 , the implementation process of the method for determining the front edge of the light shield is described as follows:

[0062] refer to Figure 1-4 As shown, step S1: the front-view camera 1 and the sunshade 4 are installed in the vehicle 2;

[0063] refer to Figure 6-7 As shown, step S2: according to the need to block the instrument panel 7 feature area, such as Figure 6 The area where the instrument panel trim 8, head-up display 9, center speaker 10, and air outlet 11 are located, combined with the area where items placed on the instrument panel 7 will form harmful reflections on the front windshield 6, that is, the area greater than or equal to the impact height H from the front windshield 6. In this embodiment, H is 80 mm. The blocked area EFGH is determined, and the position of the instrument panel surface at the front boundary EF of the blocked area is defined as the front boundary line;

[0064] Step S3: Reference Figure 7-8As shown, the optical path of the light emitted from the focus O of the forward-looking camera 1 is analyzed to obtain the light that is reflected by the inner surface of the front windshield 6 and is emitted to the front boundary line of step S3; the light path 12 is the path of the light emitted and reflected to the instrument panel 7, wherein the straight line ST is a vertical line passing through the front boundary EF of the blocked area, and the intersection point P of the straight line with the surface of the instrument panel 7 is on the front boundary line. At this time, the light path 12 emitted to the position of point P is analyzed to be QP, and the point where it is reflected on the inner surface of the front windshield 6 is analyzed to be point Q;

[0065] It should be noted that CATIA from Dassault Systèmes of France or SPEOS from OPTIS of France can be used for optical path analysis.

[0066] Step S4: The intersection of the path of the light in step S3 and the lower bottom plate 401 of the light shield 4 is taken as the front edge of the light shield. The vertical plane where the front edge of the light shield is located is the front edge of the light shield 13. Figure 7-8 As shown, the intersection of QP and the lower bottom plate 401 of the sun visor 4 is the front edge line of the sun visor, and the plane in the vertical direction where the front edge line is located is the vertical plane passing through the intersection position, so the position of the front edge 13 of the sun visor 4 is determined, and the front end of the sun visor 4 only needs to extend to the position where the front edge 13 of the sun visor is located to meet the requirement of blocking the stray light in the car, that is, Figure 3 The portion of the middle light shield 4 extending beyond the front edge 13 of the light shield can be cut off and removed. Figure 9 As shown, a reduced-size light shield 4 is obtained, which can prevent the light inside the vehicle from affecting the recognition of the front-view camera 1 and can also reduce the size.

[0067] In another embodiment, referring to Figure 9-11 A vehicle includes a front-view camera 1, which is connected to a rearview mirror mounting base 5 inside a vehicle 2. A light shield 4 is installed at the front end of the front-view camera 1. The front end boundary of the light shield 4 is determined by the aforementioned method, so that it does not need to be in contact with the front windshield 6.

[0068] In a further embodiment, reference is made to Figure 10-11 As shown, a defrost and defogger line 14 is installed on the inner side of the front windshield 6, and the defrost and defogger line is located in the shooting area of ​​the front camera 1; the space surrounded by the sun hood 4 and the front windshield 6 is not closed, and the temperature difference between the inside and outside of the car may cause the surface of the front windshield 6 in the shooting area of ​​the front camera 1 to fog in extreme weather. The defrost and defogger line 14 is arranged on the inner surface of the front windshield 6 in this small area to deal with the fogging situation, and then the image of the defrost and defogger line 14 in the imaging of the front camera 1 is deducted by the software of the prior art.

[0069] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A method for determining a front edge of a light shield, characterized by: The following steps are involved: Step S1: a front-view camera and a sunshade are arranged in a vehicle; Step S2: Determine the blocked area based on the characteristic area of ​​the instrument panel that needs to be blocked and the area where objects placed on the instrument panel will form harmful reflections on the front windshield. The position of the instrument panel surface at the front edge of the blocked area is defined as the front edge boundary line. Step S3: performing optical path analysis on the light emitted from the focus of the front-view camera to obtain the light reflected by the inner surface of the front windshield and directed toward the front boundary line described in step S2; Step S4: The intersection position of the light path in step S3 and the lower base plate (401) of the light shield (4) is used as the front boundary line of the light shield, and the plane in the vertical direction where the front boundary line of the light shield is located is the front boundary of the light shield.

2. The method for determining the front edge of a light shield according to claim 1, wherein: The light shield (4) is connected to a vehicle interior rearview mirror mounting base (5), the light shield (4) comprises a lower base plate (401), a left vertical plate (402), a right vertical plate (403) and a rear vertical plate (404), and the position of the lower base plate (401) is defined by the lower boundary determined by the method described in claim 1; The rear vertical plate (404) is arranged at the front end of the front view camera, and the rear vertical plate (404) is provided with an opening, and the opening is located in front of the lens of the front view camera. The rear ends of the lower base plate (401), the left vertical plate (402), and the right vertical plate (403) are respectively connected to the rear vertical plate (404), and the lower ends of the left vertical plate (402) and the right vertical plate (403) are respectively connected to the left and right sides of the lower base plate (401).

3. The method for determining the front edge of a light shield according to claim 2, wherein: The lower bottom plate (401) is defined by a lower boundary determined by the following steps: Determine the ground line where the vehicle is located; determine the blind spot target line, where the blind spot target line is perpendicular to the ground line, and the distance between the perpendicular intersection and the projection point of the front end of the vehicle on the ground line is the blind spot distance; the plane where the blind spot target line and the focus of the forward-looking camera are located is the lower boundary of the field of view envelope boundary.

4. The method for determining the front edge of a light shield according to claim 3, wherein: The ground line is a one-person ground line.

5. The method for determining the front edge of a light shield according to claim 3, wherein: The vertical distance between the front end of the lower base plate (401) and the lower boundary of the front camera field of view envelope is 2 mm.

6. The method for determining the front edge of a light shield according to any one of claims 1 to 5, characterized in that: The instrument panel features in step S2 include instrument panel decorations, a head-up display, a center speaker, and an air outlet.

7. The method for determining the front edge of a light shield according to any one of claims 1 to 5, characterized in that: The characteristic area of ​​the instrument panel that needs to be blocked in step S2 is: the area of ​​the instrument panel located on the side away from the front windshield, with the vertical plane where the front end of the instrument panel close to the front windshield is located as the dividing line; In step S2, the area where objects placed on the instrument panel will form harmful reflections on the front windshield is: the area where the vertical distance between the instrument panel surface and the front windshield is greater than or equal to the impact height H.

8. The method for determining the front edge of a light shield according to claim 7, wherein: The impact height H is 80 mm.

9. A vehicle comprising a front-view camera, characterized in that: The front-view camera is connected to the mounting base of the vehicle interior rearview mirror, and a light shield is installed at the front end of the front-view camera. The front end boundary of the light shield is determined by the method for determining the front end boundary of the light shield according to any one of claims 1-8.

10. A vehicle according to claim 9, characterized in that: A defrost and defogger line is installed on the inner side of the front windshield, and the defrost and defogger line is located within the shooting area of ​​the front-view camera.

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