Windshield Blocking Layer Layout for Concealed Vehicle Cameras
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing windshields face challenges in concealing information acquisition devices like cameras and sensors from the outside while allowing them to operate effectively, particularly in preventing extra light entry and adjusting the camera's angle of view, which is difficult to achieve with traditional blocking layers.
Innovation Solution
A windshield design featuring a trapezoidal laminated glass with two blocking layers and an antifog sheet, where the first blocking layer has an opening for the camera and a bracket is fixed, and the second layer adjusts the field of view and prevents external light entry, while the antifog sheet prevents fogging, enhancing the camera's operation and reducing warping effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If a blocking layer with an opening is provided to conceal the camera and bracket, then the information acquisition device is hidden from outside view, but extra light may enter through the opening and affect imaging accuracy
Solution Approach 1:
The blocking layer is divided into multiple regions: a first blocking layer with an opening for light passage, and a second blocking layer with a light blocking opening that prevents extra light entry. This segmentation allows the system to simultaneously achieve concealment and light control functions that a single blocking layer cannot provide.
Solution Approach 2:
The patent employs a nested structure where the bracket is positioned within the first blocking layer, and the second blocking layer is positioned within the bracket structure. This nesting allows multiple functional layers to be integrated in a compact arrangement, enabling both concealment and light blocking while maintaining a space-efficient design.
2Ease of operation
If the opening size is adjusted to control the camera's angle of view, then the field of view can be optimized, but the concealment effectiveness and light blocking performance deteriorate
Solution Approach 1:
The blocking system is segmented into two independent layers with different aperture configurations. The first blocking layer provides the primary opening for the camera, while the second blocking layer provides a smaller light blocking opening. This segmentation allows the angle of view to be controlled without compromising concealment, as each layer performs its specialized function independently.
Solution Approach 2:
Different regions of the blocking structure have different properties: the first blocking layer has a larger opening optimized for light passage and angle of view control, while the second blocking layer has a smaller opening optimized for light blocking and concealment. This local differentiation of properties allows simultaneous optimization of multiple conflicting requirements.
3Device complexity
If a single blocking layer is used to conceal the information acquisition device, then the structure is simple, but it cannot simultaneously satisfy concealment, light blocking, and angle of view adjustment requirements
Solution Approach 1:
The blocking function is segmented across two separate layers, each with specialized apertures. The first blocking layer handles primary concealment and angle of view control, while the second blocking layer handles extra light blocking. This segmentation enables the system to satisfy multiple functional requirements that would be difficult to achieve with a single monolithic blocking structure.
Solution Approach 2:
The two-layer blocking structure serves multiple functions simultaneously: concealment of the information acquisition device, control of angle of view, blocking of extra light, and prevention of fogging (when combined with the antifog sheet). This multi-functionality compensates for the increased structural complexity by delivering comprehensive performance.
4Difficulty of detecting and measuring
If the camera is positioned on the inner side of the windshield, then it is concealed from outside view, but fogging on the windshield surface can interfere with imaging
Solution Approach 1:
An antifog sheet is introduced as an intermediary layer between the camera and the windshield outer surface. This antifog sheet prevents fog formation on the windshield surface while maintaining optical transparency, thereby eliminating the harmful effect of fogging without compromising the camera's concealed position on the inner side of the windshield.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention provides a windshield on which an information acquisition device configured to acquire information from an outside of a vehicle by emitting and/or receiving light can be arranged, the windshield including: an outer glass plate; an inner glass plate; an interlayer arranged between the outer glass plate and the inner glass plate; a first blocking layer layered on a surface on the vehicle exterior side of the inner glass plate; and a second blocking layer layered on a surface on the vehicle interior side of the outer glass plate. The first blocking layer has an opening through which the light passes, and the second blocking layer is layered at a position where it blocks a portion of the opening, and the second blocking layer and the opening form a path through which the light passes.