Frozen Membrane Mirror Rigidization
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Solution Overview
Problem
Conventional methods for producing precision mirrors are laborious, time-consuming, and costly, and do not lend themselves to mass production, while replicated optics techniques limit precision and require constant active control, increasing complexity and power requirements.
Innovation Solution
The development of frozen surface technology, which involves actively controlling a membrane or shell structure to achieve a precise shape and then rigidizing it with a solidifying material, allowing the mirror to maintain its figure without ongoing active control once set.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional grinding and polishing techniques are used to produce mirrors, then manufacturing precision is improved, but production time and cost increase
Solution Approach 1:
The patent applies preliminary action by pre-forming the mirror substrate to the desired shape using compression molding or other forming techniques before the reflective coating is applied. This preliminary shaping eliminates the need for subsequent grinding and polishing operations, allowing mirrors to be produced rapidly through a single molding process while maintaining the required surface precision for optical applications.
2Productivity
If replicated optics techniques are used to produce mirrors, then productivity is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent employs parameter changes by controlling the compression molding parameters (pressure, temperature, time) to achieve the desired mirror surface precision directly during the molding process. By optimizing these parameters, the invention enables mass production of mirrors with precision comparable to or exceeding traditional methods, eliminating the precision limitation of replicated optics while maintaining high productivity.
3Adaptability or versatility
If electrostatically controlled membrane mirrors are used, then adaptability is improved, but device complexity and power requirements increase
Solution Approach 1:
The patent applies inversion by reversing the traditional approach: instead of starting with a rigid mirror and adding active control mechanisms, the invention uses a flexible membrane substrate that is actively controlled during the molding process to achieve the desired shape, then rigidized afterward. This eliminates the need for ongoing active control during operation, reducing device complexity and power requirements while maintaining the ability to produce precise mirror figures.
4Adaptability or versatility
If electrostatically controlled membrane mirrors are used, then adaptability is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by performing the active control shaping operation during the manufacturing process before the mirror is finalized. The flexible membrane is actively controlled to achieve the precise mirror figure, then rigidized through coating or curing. Once rigidized, no further power is needed to maintain the shape, eliminating continuous power consumption while still achieving the desired adaptability during production.
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 approach enables the production of precision mirrors without the need for grinding and polishing, reducing production costs and complexity, and allows for the creation of mirrors that can maintain their shape without continuous active control, facilitating more efficient and cost-effective mass production.
Implementation Method 1
a solidifying material is applied to a back surface of the membrane, and while that solidifying material cures
Implementation Method 2
The plurality of actuators are interconnected to a charge source. The amount of charge provided by the charge source to individual actuators is controlled by a controller
Data Source
AI summary
A frozen surface technology is provided that can be used to provide a precisely defined surface. The frozen surface technology can include the use of a frozen membrane. For instance, frozen membrane mirrors and methods of producing frozen membrane mirrors are provided. The frozen membrane mirror includes a membrane material having a reflective surface. Active control is used to maintain a desired figure of the reflective surface while a solidifying material is applied to a back side of the membrane material. Active control of the figure of the reflective surface is maintained while the solidifying material cures. Once the solidifying material has been applied and cured, active control can be removed. The frozen surface technology also enables the formation of a surface with a precisely defined shape from a shell material that is brought into a flexible state, is actively controlled to achieve the desired surface shape, and that continues to be actively controlled until the shell material has been brought into a fixed or frozen state.