Rearview Device Integrated Reflective Lid for Sealed Optical Assembly
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Solution Overview
Problem
Existing rear view devices for motor vehicles are complex, expensive to manufacture, and fail to provide a full and expansive field of view, especially when exposed to the outside environment, as they are prone to dirt and debris entry and do not offer a wide angle view to address the driver's blind spot effectively.
Innovation Solution
A compact and easy-to-manufacture head section for rear view devices is designed with a second rear view means integrated into a single-piece component on the lid section, featuring a polymeric substrate coated with a chromium-based reflective coating, which forms a combined reflective element, and includes a housing and lid section that tightly seals the electronic unit from the outside environment, allowing for a reduced number of components and improved protection against dirt and humidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional multi-component rear view device design is used, then protection from outside environment is provided, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent integrates the reflective element directly into the lid section by coating the polymeric substrate with chromium-based reflective coating, creating a combined single-piece component. This merging eliminates separate reflective elements and reduces the total number of components while maintaining environmental protection through the sealed housing and lid section design.
2Adaptability or versatility
If traditional rear view device design is used, then basic rear view function is provided, but field of view is limited
Solution Approach 1:
The integrated lid section with reflective coating provides an unobstructed viewing surface that can be optimized for wide-angle visibility. By eliminating separate reflective elements and their mounting structures, the design achieves a cleaner optical path and potentially wider field of view without adding structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a compact and cost-effective rear view device design that effectively seals electronic components from the outside environment, reducing the number of components needed and enhancing protection against dirt and humidity, while offering a wider field of view through the integrated reflective element, addressing the limitations of existing devices.
Implementation Method 1
a polymeric substrate, which is coated with a chromium-based reflective coating in the region of the combined, single-piece component for providing the second rear view means in form of a reflective element
Data Source
AI summary
A rearview device for a motor vehicle includes a moveable head assembly, an actuator assembly having a fixed part and a moveable part, the moveable part being attached to the head assembly, a motor cradle configured to attach the actuator assembly to the moveable head assembly. A method of assembling a rearview device comprises providing the rearview device and attaching the actuator assembly to the moveable head assembly using the motor cradle.