Movable Lens Mounting Structure for Laser Vibration Isolation
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Solution Overview
Problem
Conventional methods for damping lens movement in laser processing systems either compromise positioning accuracy with passive damping or increase complexity and cost with active damping, failing to effectively prevent vibration transmission to the welding head.
Innovation Solution
A magnetic coil is attached to the lens assembly, with a magnet mounted on a movable holder connected by a spring, aligning the resonant frequency of the magnet-spring system with the lens-spring system to cancel out vibration impulses by balancing counterforces through inertia and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If passive damping methods are used to prevent lens movement, then vibration is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent changes the physical state and parameters of the mounting structure by introducing a magnet-spring system with specific resonant frequency characteristics. The spring constant and mass are carefully selected to create a resonant frequency that matches the lens oscillation frequency, transforming the damping approach from passive material-based to dynamic resonance-based, thereby reducing vibration without compromising positioning accuracy
2Stability of the object's composition
If active damping with additional movable mass is used to compensate for lens movement, then vibration transmission is reduced, but device complexity increases
Solution Approach 1:
The patent merges the damping function with the existing lens mounting structure by integrating a magnet and spring elements directly into the carrier structure. This combines multiple functions (mounting, positioning, and vibration compensation) into a single integrated system, reducing overall device complexity while maintaining effective vibration transmission reduction
Solution Approach 2:
The magnet-spring system automatically compensates for lens oscillation through its own resonant motion without requiring external control systems or additional actuators. The system self-regulates by utilizing the natural resonance of the spring-mass system to counterbalance the lens movement, eliminating the need for complex active control mechanisms
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 significantly reduces vibrations transmitted to the system, achieving a more than tenfold reduction in force without requiring precise frequency tuning, thereby enhancing the stability of the laser processing system.
Implementation Method 1
at least one optical element and a drive for moving the at least one optical element, wherein the at least one optical element and the drive are each connected to the frame via a first and second spring element
Implementation Method 2
The magnetic coil is attached to the lens assembly, with a magnet mounted on a movable holder connected by a spring
Implementation Method 3
aligning the resonant frequency of the magnet-spring system with the lens-spring system to cancel out vibration impulses
Implementation Method 4
The mass of the magnet is greater than the mass of the coil and optical element, such that the movement of the magnet generates an inertial force that counterbalances the vibration impulse generated by the oscillation of the optical element
Data Source
AI summary
The present disclosure relates generally to a mounting structure for a movable lens in a laser processing system for preventing vibration during movement of the lens. The present disclosure provides a system for moving an optical element comprising a frame, at least one optical element, and a drive for moving the at least one optical element, where the at least one optical element and the drive are connected to the frame via first and second spring members, respectively.