Laser Processing Head With Coma Aberration Beam Shaping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In laser processing, adjusting the energy intensity distribution of laser light on a workpiece without altering the irradiation position is challenging, as changing the positional relationship between the laser incident part and the lens affects both the energy intensity distribution and the irradiation position, potentially overlapping the laser with accessory devices.
Innovation Solution
A laser processing head with a collimating optical system and a collecting optical system configured to induce coma aberration, allowing independent adjustment of the energy intensity distribution and irradiation position through separate moving parts, enabling precise control of the laser light's focus and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the positional relationship between the laser incident part and the lens is changed to adjust the energy intensity distribution, then the energy intensity distribution is improved, but the irradiation position deviates from the original processing point
Solution Approach 1:
The patent divides the adjustment function into two independent parts: (1) adjusting the relative position between the laser incident part and collimating optical system to control energy intensity distribution, and (2) adjusting the relative position between the collecting optical system and collimating optical system to control irradiation position. This segmentation allows independent optimization of each parameter without affecting the other.
Solution Approach 2:
The patent introduces a second degree of freedom by adding independent adjustment capability in another dimension (the relationship between collecting optical system and collimating optical system). This allows the system to adjust irradiation position without affecting energy intensity distribution, effectively decoupling the two adjustment parameters.
2Manufacturing precision
If the positional relationship between the laser incident part and the lens is changed to adjust the energy intensity distribution, then the energy intensity distribution is improved, but the irradiation position overlaps with accessory devices
Solution Approach 1:
The patent separates the control of energy intensity distribution from the control of irradiation position by introducing independent adjustment mechanisms. The first adjustment (laser incident part to collimating system) controls energy distribution, while the second adjustment (collecting system to collimating system) controls position, preventing overlap with accessory devices.
Solution Approach 2:
The patent introduces dynamic adjustment capabilities with two independent moving parts that allow real-time optimization of both energy intensity distribution and irradiation position. This dynamic control enables the system to adapt to different processing requirements while avoiding interference with accessory devices.
3Ease of operation
If the relative positional relationship between the laser processing head and the workpiece is changed to adjust the irradiation position, then the irradiation position is improved, but the energy intensity distribution becomes biased
Solution Approach 1:
The patent divides the adjustment functions into two independent segments: one for controlling irradiation position (movement between collecting optical system and collimating optical system) and another for controlling energy intensity distribution (movement between laser incident part and collimating optical system). This allows position adjustment without compromising energy distribution quality.
4Object-affected harmful factors
If the relative positional relationship between the laser processing head and the accessory device is changed to avoid overlap, then the overlap is prevented, but the irradiation position deviates from the original processing point
Solution Approach 1:
The patent separates position control from energy distribution control, allowing the irradiation position to be adjusted independently to avoid accessory devices while maintaining the correct energy intensity distribution through the other adjustment mechanism.
Solution Approach 2:
The patent adds an independent degree of freedom by introducing the second adjustment mechanism (collecting optical system position relative to collimating optical system), enabling position adjustment in response to accessory device locations without affecting energy distribution or requiring changes to the primary optical alignment.
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 configuration allows for effective adjustment of the energy intensity distribution and irradiation position independently, improving processing quality by maintaining the desired energy distribution and correcting deviations, while avoiding overlap with accessory devices.
Implementation Method 1
a collimating optical system for collimating laser light from the laser irradiation part
Implementation Method 2
a collecting optical system for collecting the laser light after passing through the collimating optical system
Implementation Method 3
An optical system including the collimating optical system and the collecting optical system is configured such that the laser light after passing through the collecting optical system has coma aberration
Data Source
AI summary
A laser processing head includes a laser irradiation part, a collimating optical system for collimating laser light from the laser irradiation part, and a collecting optical system for collecting the laser light after passing through the collimating optical system. An optical system including the collimating optical system and the collecting optical system is configured such that the laser light after passing through the collecting optical system has coma aberration. The laser processing head further includes a first moving part for moving at least one of the laser irradiation part or the collimating optical system so as to change a relative position of the collimating optical system with respect to the laser irradiation part, in a first direction orthogonal to a center axis of the laser irradiation part or the collimating optical system, and a second moving part for moving the collecting optical system so as to change a relative position of the collecting optical system with respect to the collimating optical system, in a second direction orthogonal to a center axis of the collecting optical system.