Stitching Interferometer Lens Support with Counterweight Balance
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Solution Overview
Problem
Existing stitching interferometers have low detection precision due to the inability to maintain uniform and stable forces on the lens during detection, especially when the lens is inclined, leading to deformation and inaccurate results.
Innovation Solution
A detection device with a cylindrical frame and support units that include a balance mechanism with a counterweight and adjustable rod to ensure consistent axial support forces, maintaining force balance regardless of the lens's inclination angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens is inclined and rotated to match the reference lens state during stitching detection, then the detection can be performed, but the support forces change causing lens deformation and reduced detection precision
Solution Approach 1:
The patent introduces counterweights that can be adjusted to compensate for the change in gravitational force components when the lens is inclined. By adding counterbalancing forces, the system maintains the original support force distribution on the lens even during inclined detection, preventing deformation and maintaining detection precision.
Solution Approach 2:
The patent changes the parameters of the support system by introducing adjustable support forces through counterweights. This allows the support forces to be dynamically adjusted to compensate for inclination-induced force imbalances, maintaining force equilibrium throughout the detection process.
2Ease of operation
If flexible support materials (plasticine) and adhesive tape are used to support the lens, then the lens can be supported during detection, but the support forces cannot be measured or controlled accurately, leading to unrepeatable detection results
Solution Approach 1:
The patent replaces the flexible, uncontrollable mechanical support (plasticine and adhesive tape) with a controlled mechanical system consisting of adjustable support units with counterweights. This substitution enables precise measurement and control of support forces, transforming an unrepeatable process into a reliable, controllable one.
3Stability of the object's composition
If multiple elastic supports are used at the periphery of the lens bottom to ensure uniform force in conventional interferometry, then the lens remains stable horizontally, but inclining the lens breaks the force balance causing axial support force to exceed gravitational component
Solution Approach 1:
The patent transforms the static support system into a dynamic one where counterweights can be adjusted according to the inclination angle. This allows the support forces to adapt continuously as the lens is inclined, maintaining force balance throughout the range of motion and enabling both stability and inclination capability.
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
Ensures repeatable and accurate surface detection by maintaining uniform support forces across all detection positions, preventing rigid displacement and surface changes during lens inclination.
Implementation Method 1
a balance mechanism configured to provide a balancing force for balancing with force of the support mechanism for supporting the lens to be detected
Implementation Method 2
each of the support units comprising: a support mechanism configured to be movable in an axial direction of the detection frame and cooperate with the support bosses so as to support the lens to be detected together; and a balance mechanism configured to provide a balancing force
Data Source
AI summary
A detection device adapted to detect lens surface and a stitching interferometer including the same are disclosed. The detection device includes: a cylindrical detection frame comprising support bosses arranged on an inner wall of the detection frame in a circumferential direction of the detection frame, the lens to be detected being placed on the support bosses; and a plurality of support units mounted at a bottom of the detection frame in the circumferential direction of the detection frame, each of the support units comprising: a support mechanism configured to be movable in an axial direction of the detection frame and cooperate with the support bosses so as to support the lens to be detected together; and a balance mechanism configured to provide a balancing force for balancing with force of the support mechanism for supporting the lens to be detected, so that axial support force of each supporting unit for the lens to be detected is equal to axial support force of each support boss for the lens to be detected in both cases where the axial direction of the detection frame is parallel to a gravity direction of the lens to be detected and inclined with respect to the gravity direction of the lens to be detected.