Laser Beam Overlap Control for Accurate Light-Absorbing Material Flight
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Solution Overview
Problem
Conventional methods for flying light-absorbing materials using laser beams often result in inaccurate directionality, with the materials deviating from the intended path due to asymmetric thermal expansion caused by overlapping beam radiation regions, leading to backward flight.
Innovation Solution
The apparatus adjusts the beam centroid position to ensure it is outside the preceding beam radiation region, optimizing the overlap ratio and scan speed to prevent backward flight by ensuring sufficient energy is applied uniformly across the light-absorbing material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the laser beam radiation regions overlap to ensure continuous coverage, then the coverage completeness is improved, but the thermal expansion becomes asymmetric causing backward flight
Solution Approach 1:
The patent applies asymmetry by intentionally offsetting the beam centroid position from the geometric center of the beam radiation region. Specifically, the beam centroid is positioned outside the preceding beam radiation region while maintaining overlap with the following region. This asymmetric positioning ensures that the thermal expansion force acts in the forward direction rather than causing backward flight, thus resolving the contradiction between coverage completeness and flight direction accuracy.
2Productivity
If the scan speed is increased to improve productivity, then the processing efficiency is improved, but the thermal expansion becomes insufficient causing backward flight
Solution Approach 1:
The patent employs parameter changes by adjusting the relationship between scan speed, beam centroid position, and beam radiation region overlap. By dynamically optimizing these parameters together - specifically positioning the beam centroid outside the preceding region while maintaining appropriate overlap - the system achieves both high processing speed and accurate forward flight direction, resolving the contradiction between productivity and manufacturing precision.
3Stability of the object's composition
If the beam radiation regions are positioned to ensure uniform energy distribution, then the energy uniformity is improved, but the thermal expansion direction becomes asymmetric causing backward flight
Solution Approach 1:
The patent resolves this contradiction by introducing controlled asymmetry in the beam centroid positioning. Rather than symmetric uniform distribution, the beam centroid is deliberately positioned outside the preceding beam radiation region. This asymmetric positioning creates a unidirectional thermal expansion force that ensures forward flight while maintaining sufficient energy distribution uniformity across the material surface.
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 improves the accuracy of light-absorbing material flight direction, reducing deviations and achieving precise adherence to the intended target, enhancing image and modeling quality.
Implementation Method 1
irradiate a light-absorbing material absorbing light with a laser beam corresponding to a light absorption wavelength of the light-absorbing material
Implementation Method 2
asymmetric thermal expansion caused by overlapping beam radiation regions
Data Source
AI summary
An apparatus configured to fly a light-absorbing material, includes a unit configured to irradiate a light-absorbing material absorbing light with a laser beam corresponding to a light absorption wavelength of the light-absorbing material to fly the light-absorbing material. When a preceding beam radiation region and a following beam radiation region overlap, the following beam radiation region is irradiated with the laser beam such that a beam centroid position is outside the preceding beam radiation region.