Optical Element Friction Damping Layer
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Solution Overview
Problem
Existing vibration dampers are not suitable for optical elements due to their size and directional specificity, failing to effectively damp vibrations of varying frequencies and directions, which are common in optical element mounts, especially when combined with manipulators.
Innovation Solution
An optical element or mount component with an additional element that dissipates vibrational energy through friction, effectively damping vibrations in all six degrees of freedom by transforming energy into heat, which can be adapted to various geometries and frequencies without significant additional space or design complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vibration dampers are used, then vibration damping is achieved, but the device size becomes too large for optical elements
Solution Approach 1:
The patent uses a thin flexible layer of viscoelastic material applied as a coating or laminate on the optical element surface. This flexible film structure provides vibration damping functionality while maintaining a thin profile that is suitable for optical elements, avoiding the bulkiness of conventional dampers.
Solution Approach 2:
The patent changes the physical state and properties of the damping material by using viscoelastic substances with specific loss factors and damping coefficients. By selecting materials with appropriate glass transition temperatures and damping characteristics, effective vibration suppression is achieved at minimal thickness.
2Reliability
If conventional vibration dampers are used, then damping in specific directions is achieved, but damping across all six degrees of freedom is not sufficient
Solution Approach 1:
The patent creates a universal damping solution by applying viscoelastic material in configurations that simultaneously address multiple degrees of freedom. The damping layer is designed to provide omnidirectional damping coverage, making the optical element suitable for various mounting orientations and manipulator configurations without requiring direction-specific dampers.
Solution Approach 2:
The patent transitions from one-dimensional or directional damping approaches to three-dimensional omnidirectional damping by applying viscoelastic material in layered configurations across the entire optical element surface. This multi-dimensional approach ensures vibration energy is dissipated regardless of the vibration direction or manipulator orientation.
3Reliability
If conventional vibration dampers are used, then damping at specific frequencies is achieved, but broad-spectrum damping across different frequencies is not sufficient
Solution Approach 1:
The patent achieves broad-frequency damping by selecting viscoelastic materials with appropriate glass transition temperatures and loss factor characteristics. These material parameters are chosen to maximize energy dissipation across the entire operating frequency range, from low-frequency manipulator movements to high-frequency optical element vibrations, providing universal frequency coverage.
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 solution provides broad-spectrum vibration damping with minimal additional mass and installation space, suitable for both manipulable and non-manipulable optical elements, improving damping effectiveness by tuning to natural frequencies and using materials like pourable media or fibrous mediums.
Implementation Method 1
at least one additional element fitted thereon which dissipates the vibrational energy of the optical element by friction
Implementation Method 2
effects caused by the viscosity or viscoelasticity of the participating materials
Implementation Method 3
effects caused by the viscosity or viscoelasticity of the participating materials
Data Source
AI summary
An optical element has at least one additional element fitted thereon which dissipates the vibrational energy of the optical element by friction.