Adaptive Phase Mask Using Deformable Annular Reflector
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Solution Overview
Problem
Existing phase masks in coronagraphs are wavelength-specific, requiring multiple masks for different wavelengths, which increases costs and inconveniences users who need to replace masks when observing objects with different spectral characteristics.
Innovation Solution
An adaptive phase mask apparatus featuring a conical mirror assembly and a flexible annular reflector surrounded by driver assemblies that deform the reflector to induce a desired phase response in incident light, allowing for continuous phase variation along an azimuthal direction, enabling the same mask to be used across a broad spectrum without replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed phase mask is used for a specific wavelength, then the phase pattern is precise for that wavelength, but the mask becomes ineffective for other wavelengths requiring replacement
Solution Approach 1:
The patent employs a deformable mirror with adjustable surface geometry that can dynamically change its phase-shifting properties. The mirror's surface can be deformed using actuators (such as piezoelectric elements or magnetic coils) to adapt to different wavelengths, replacing the need for multiple fixed masks while maintaining precise phase control for each wavelength
Solution Approach 2:
The invention changes the physical parameters of the phase mask by varying the deformation of the deformable mirror surface. By adjusting the mirror's surface shape through controlled deformation, the phase shift introduced to different wavelengths can be optimized, allowing a single mask structure to serve multiple wavelength ranges
2Measurement precision
If multiple phase masks are provided for different wavelengths, then each wavelength can have an optimized phase mask, but the device complexity and cost increase
Solution Approach 1:
The patent creates a universal phase mask system where a single deformable mirror can perform the function of multiple wavelength-specific masks. The mirror's ability to be reconfigured allows it to serve multiple purposes across different wavelengths, reducing the total number of components needed while maintaining optimized phase response for each wavelength
Solution Approach 2:
By making the phase mask dynamic and reconfigurable, the system replaces multiple static masks with one adaptive mask. The deformable mirror can be programmed to take on different surface shapes corresponding to different wavelength requirements, eliminating the need to physically swap masks while preserving wavelength-specific optimization
3Measurement precision
If a phase mask is replaced for each wavelength change, then optimal phase control is maintained, but user convenience and observation efficiency decrease
Solution Approach 1:
The deformable mirror provides continuous, programmable adjustment of phase characteristics without requiring physical replacement. Users can switch between wavelengths by electronically controlling the mirror's deformation pattern, maintaining precise phase control while eliminating the manual inconvenience of mask replacement
Solution Approach 2:
The system allows for automated wavelength switching through electronic control of the deformable mirror actuators. The phase mask adapts itself to different wavelengths through programmed deformation patterns, eliminating the need for user intervention to physically replace masks and thereby improving operational convenience
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
Enables efficient and flexible phase manipulation across various wavelengths, reducing the need for multiple masks and allowing for continuous phase variation, thus enhancing the capability to observe objects with different spectral properties without the need for frequent replacements.
Implementation Method 1
an adaptive phase mask that induces a phase variation in an azimuthal direction in incident light
Implementation Method 2
The flexible annular reflector is configured to receive reflected light from the conical mirror assembly
Data Source
AI summary
Systems and methods for shifting the phase of incident light to induce a continuous phase variation in an azimuthal direction. A phase mask apparatus includes a conical mirror assembly and a flexible annular reflector that substantially surrounds at least a portion of the conical mirror assembly. The flexible annular reflector is configured to receive reflected light from the conical mirror assembly. A plurality of driver assemblies are operative to deform the flexible annular reflector as to produce the desired phase response in light reflected from the annular reflector.