Multi-zone mirror graded transition for uniform reflectance

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Solution Overview

Problem

Existing multi-zone mirrors struggle to achieve a seamless transition between opaque and transflective areas, leading to variations in color and intensity of the reflected image, and prior art fails to match the reflectance and color between these areas effectively, affecting the aesthetic appearance and stealthy performance of the mirror.

Innovation Solution

The implementation of a multi-zone reflector design with a graded or abrupt transition between opaque and transflective areas, utilizing a split reflector stack with a graded opacifying layer and varying thickness of reflecting layers to decouple reflectance and transmittance values, ensuring a uniform color and reflectance across the surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a multi-zone reflector design with different transmission zones is implemented, then the functional performance is improved, but the visual appearance uniformity deteriorates due to color and intensity variations

Engineering Contradiction:
Improvefunctional performanceVSAvoidvisual appearance uniformity
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies local quality by implementing different optical characteristics in different zones of the reflector. The first zone has first optical characteristics while the second zone has second optical characteristics, allowing each zone to be optimized for its specific function while maintaining overall visual uniformity through controlled transition regions.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent utilizes parameter changes by varying the optical properties (transmission, reflection, absorption) across different zones. By controlling the optical characteristics in each zone and their transition regions, the patent achieves both functional versatility and visual appearance uniformity simultaneously.

Inventive Principle:
Principle #35Parameter changes

2Stability of the object's composition

If a transition region between opaque and transflective zones is created, then the visual appearance is improved, but the manufacturing complexity increases

Engineering Contradiction:
Improvevisual appearanceVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the reflector into distinct zones (first zone, second zone, and transition region) with different optical characteristics. This segmentation allows for controlled visual transitions while providing clear manufacturing guidelines for creating each zone with specific optical properties.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent uses parameter changes to create transition regions where optical properties gradually change between zones. This approach improves visual appearance by eliminating abrupt boundaries while maintaining manageable manufacturing complexity through controlled parameter transitions.

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If the reflectance and transmittance are coupled in existing designs, then the structure is simpler, but the ability to independently adjust optical properties in each zone is reduced

Engineering Contradiction:
Improvestructural simplicityVSAvoidindependent adjustment capability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by enabling independent control of optical characteristics in different zones. The first zone can have first optical characteristics while the second zone has second optical characteristics, allowing independent adjustment of reflectance and transmittance in each zone without being constrained by coupled designs.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent uses segmentation to separate the optical control of different zones. By dividing the reflector into distinct zones with independently controllable optical properties, the patent achieves both structural simplicity and independent adjustment capability simultaneously.

Inventive Principle:
Principle #1Segmentation

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 achieves a visually unperceivable transition between zones, maintaining stealthy characteristics and optimizing the aesthetic appearance by ensuring uniform reflectance and color across the mirror surface, while allowing independent adjustment of reflectance values in each zone.

Implementation Method 1

a lower reflecting layer disposed adjacent the supporting base, the lower reflecting layer substantially completely covering a first transflective zone of the reflector

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

an opacifying layer having a lower surface facing the supporting base and an upper surface, the opacifying layer disposed substantially outside the first transflective zone adjacent to the lower reflecting layer

Methodology Applied
Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Implementation Method 3

an upper reflecting layer extending substantially completely over the opacifying layer and the first transflective zone of the reflector

Methodology Applied
Scientific EffectReflection: Reflection

Data Source

PatentUS9274394B2Multi-zone mirrors
Publication Date: 2016.03.01 GENTEX CORP
  • US9274394B2 patent drawing
  • US9274394B2 patent drawing
  • US9274394B2 patent drawing

AI summary

A multi-zone reflector having an opaque zone and a transflective zone. The reflector includes a supporting base, a lower reflecting layer disposed adjacent the supporting base, and an upper reflecting layer extending over the opacifying layer and the transflective zone of the reflector. The lower reflecting layer substantially completely covers the transflective zone, and the opacifying layer is disposed substantially outside the transflective zone adjacent to the lower reflecting layer. Over at least a portion of the transflective zone, the upper and lower reflecting layers have a common surface.