Rearview Mirror Reflective Polarizer for Low-Loss Display
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Solution Overview
Problem
Existing rearview mirrors suffer from high light loss and poor display quality due to the multilayer structures used for reflection and display, leading to low brightness and distorted images.
Innovation Solution
A rearview mirror design featuring a single-layer reflective polarizing structure made of both reflective and polarizing materials, integrated with an outer or inner glass layer and a display light-emitting structure, reducing the number of layers and thickness, thereby minimizing light loss and distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multilayer surface reflection structure and display screen structure are laminated and combined, then the mirror achieves light reflection and screen display functions, but the light loss increases and display brightness decreases
Solution Approach 1:
The patent merges the surface reflection structure and display screen structure into a single integrated display screen structure that performs both light reflection and screen display functions simultaneously, eliminating the need for separate laminated layers and reducing light loss through multiple interfaces
Solution Approach 2:
The display screen structure is designed to serve multiple functions: it acts as both the display medium and the reflective surface, allowing the rearview mirror to display information while also reflecting ambient light for nighttime visibility
2Stability of the object's composition
If multiple intermediate connection layers and material layers are stacked, then the structural integrity is improved, but the light propagation path increases causing more light loss and distortion
Solution Approach 1:
The patent removes unnecessary intermediate connection layers and redundant material layers from the structure, retaining only the essential functional layers needed for structural integrity and display performance, thereby shortening the light propagation path and reducing light loss
3Strength
If a multilayer structure with protective glass and multiple material layers is used, then the protective function is enhanced, but the display quality deteriorates due to light distortion
Solution Approach 1:
The patent applies different material properties to different regions and layers of the display screen structure, optimizing each layer's characteristics to minimize light distortion while maintaining protective functions, such as using specific polarizing angles and material compositions tailored for their local functional requirements
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
This design enhances the brightness and display quality of the rearview mirror by shortening the light propagation path and simplifying the structure, while also reducing manufacturing costs and weight.
Implementation Method 1
the surface reflection structure and the display screen structure are laminated and combined to achieve light reflection
Implementation Method 2
the display screen structure also includes multilayer structures having a polarizer
Data Source
AI summary
A rearview mirror includes a shell with an opening, a display light-emitting structure installed in the shell, a protective structure and a reflective polarizing structure installed at the opening. The reflective polarizing structure is a single layer made of both reflective material and polarizing material, the protective structure comprises an outer glass layer, the outer glass layer, the reflective polarizing structure, and the display light-emitting structure are laminated in sequence, and the reflective polarizing structure is attached to one of the outer glass layer and the display light-emitting structure. The rearview mirror has a simple structure, less light loss, and good display quality.