Multi-Zone Mirror Graded Opacifying Layer
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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 split reflector stack and graded opacifying layers, where the opacifying layer has a graded thickness and the upper reflecting layer has a thickness that changes in the transition region, allowing for a gradual and imperceptible transition between the opaque and transflective zones, with the use of materials like Chromium and Ruthenium to optimize optical matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a multi-zone mirror uses distinct opaque and transflective zones with uniform thickness layers, then the manufacturing process is simple, but the transition between zones creates visible discontinuities in color and reflectance
Solution Approach 1:
The patent applies local quality by varying the thickness of the opacifying layer and upper reflecting layer specifically in the transition region between opaque and transflective zones. This localized thickness modulation creates a gradual optical transition that eliminates visible discontinuities, while maintaining uniform thickness in other regions for manufacturing simplicity.
Solution Approach 2:
The patent changes the thickness parameter of the opacifying layer and upper reflecting layer continuously across the transition region. By gradually varying these parameters from the opaque zone thickness to the transflective zone thickness, the patent achieves seamless visual transition while maintaining manufacturing feasibility through controlled parameter gradients.
2Measurement precision
If the opacifying layer has abrupt edges to define clear zone boundaries, then the zone definition is precise, but the transition between opaque and transflective areas becomes visually perceptible
Solution Approach 1:
The patent replaces the static abrupt edge with a dynamic gradual transition in layer thickness. The thickness of the opacifying layer and upper reflecting layer changes continuously across the transition region, creating a dynamic gradient that provides both zone definition and visual continuity, eliminating the harsh boundaries of abrupt edges.
3Ease of manufacture
If the reflector uses a single uniform reflecting layer, then the manufacturing process is straightforward, but it cannot provide different transmittance levels in different zones
Solution Approach 1:
The patent segments the reflecting system into multiple functional layers: a lower reflecting layer that provides base reflectance across the entire surface, and an upper reflecting layer that is selectively applied in the opaque zone. This segmentation enables different transmittance levels in different zones while maintaining a relatively simple manufacturing process compared to more complex multi-layer structures.
Solution Approach 2:
The lower reflecting layer serves a universal function by providing reflectance across the entire mirror surface, including both opaque and transflective zones. This universal layer simplifies manufacturing by eliminating the need for separate reflecting layers in each zone, while the selective addition of the upper reflecting layer and graded opacifying layer provides the required multi-zone functionality.
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 uniform color and reflectance across the mirror surface, reducing the perceivable discontinuity between zones and enhancing the stealthy appearance by maintaining low transmittance in the opaque area and high transmittance in the transflective area, while ensuring durability and stability of the thin-film stack.
Implementation Method 1
a thin-film stack including a lower reflecting layer, an opacifying layer, and an upper reflecting layer
Implementation Method 2
the opacifying layer may have an abrupt edge that defines a transition between the opaque and transflective zones
Data Source
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.