Colored Glass Layer Formation Without Surface Roughening
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Solution Overview
Problem
Existing glass technologies do not effectively integrate a colored layer to provide both light-shielding and light-transmitting properties without compromising surface integrity or causing optical interference, and existing methods for forming light-shielding layers on glass surfaces lead to surface roughening and stray light issues.
Innovation Solution
A glass composition incorporating Ti, Nb, or Bi ions with a colored layer formed through a heat treatment in a reducing atmosphere, allowing for a colored layer with arbitrary shapes that can be patterned on one or both surfaces, providing a light-shielding function while maintaining the same glass composition as the non-colored areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light-shielding layer is formed on the glass surface using existing methods, then light-shielding function is provided, but surface roughening occurs causing stray light and flare
Solution Approach 1:
The patent merges the light-shielding function directly into the glass substrate by forming a colored layer within the glass matrix during melting, rather than applying a separate surface coating. This integration eliminates the interface between glass and coating that causes surface roughening, while maintaining effective light-shielding properties through the colored layer that absorbs stray light
Solution Approach 2:
The patent changes the physical state and location of the light-shielding material from a surface-applied coating to an internally incorporated colored layer formed during glass melting. By controlling the melting and cooling parameters, the colored layer becomes an integral part of the glass structure, preserving surface smoothness while achieving light-shielding function
2Object-affected harmful factors
If a colored layer is formed on glass surface, then light-shielding function is provided, but surface integrity is compromised
Solution Approach 1:
The colored layer is merged with the glass substrate by incorporating colorants into the glass melt, allowing the colored layer to form within the glass matrix rather than as a separate surface deposit. This merging preserves surface integrity while providing the required light-shielding function through the internally formed colored layer
3Object-affected harmful factors
If metal film is formed on glass surface for light-shielding, then light-shielding function is achieved, but surface roughening and optical interference occur
Solution Approach 1:
The patent changes the formation parameters from surface-deposition processes to bulk-melting processes. By controlling the temperature, composition, and cooling rate during melting, the colored layer forms uniformly within the glass without disrupting surface smoothness, eliminating the optical interference caused by metal film deposition
Solution Approach 2:
The patent creates a composite glass material where colorant particles or phases are distributed within the glass matrix to form the colored layer. This composite structure provides light-shielding function through the colored components while the continuous glass phase maintains surface integrity and optical clarity
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 enables glass with clear contrast between colored and non-colored areas, reducing warpage, suppressing stray light and flare, and maintaining high transmittance and optical integrity, suitable for use as cover glass in imaging elements.
Implementation Method 1
a process of performing a heat treatment in a reducing atmosphere
Implementation Method 2
a process of performing a heat treatment in a reducing atmosphere
Data Source
AI summary
To provide glass including a colored layer and a manufacturing method thereof.Provided is glass containing one or more glass components selected from the group consisting of Ti ions, Nb ions, W ions, and Bi ions. The glass includes a colored layer having an arbitrary shape.