Portable Laser Beam Shaping for Uniform Surface Processing
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Solution Overview
Problem
Existing portable laser surface processing devices suffer from variations in processing state and inconsistency due to rotational scanning of laser light, which affects the quality and uniformity of surface treatment.
Innovation Solution
A portable laser surface processing device with a beam shaper that divides laser light into multiple beams, using a moving mechanism to control the pattern of laser spots on the surface, including rotation and reciprocation mechanisms to ensure consistent power distribution and reduce processing inconsistencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser light irradiation points are scanned rotationally in a circular form, then the coating on the surface can be removed, but variation in the processing state according to the site and processing inconsistency occur
Solution Approach 1:
The patent divides a single laser beam into multiple beams (e.g., 3-5 beams) that form a pattern of spots on the surface. This segmentation allows simultaneous processing of multiple locations, reducing the time the laser dwells at any single spot and thereby minimizing thermal accumulation and processing variation.
Solution Approach 2:
The patent introduces a moving mechanism that dynamically adjusts the position of the beam shaper relative to the casing, causing the pattern of laser spots to rotate or reciprocate on the surface. This dynamic movement ensures uniform energy distribution across the processing area and prevents localized overheating, thereby improving processing consistency.
2Productivity
If laser light is concentrated at specific points during rotational scanning, then coating removal is effective, but thermal effects and processing inconsistency increase
Solution Approach 1:
By dividing the laser beam into multiple beams that create a pattern of spots, the total laser energy is distributed across multiple locations simultaneously. This reduces the energy concentration at any single point, minimizing thermal effects while maintaining effective coating removal through parallel processing.
Solution Approach 2:
The moving mechanism creates periodic movement of the laser spot pattern across the surface through rotation or reciprocation. This periodic action ensures that no single location receives continuous concentrated energy, allowing heat to dissipate and preventing excessive thermal effects while maintaining processing efficiency.
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
The device achieves reduced variation in processing state and improved consistency by rotating and reciprocating laser spots, ensuring uniform energy density and minimizing thermal effects, thereby enhancing the quality of surface treatment.
Implementation Method 1
a beam shaper serving as the optical component configured to divide laser light into a plurality of beams
Implementation Method 2
a rotation mechanism configured to rotate the beam shaper with respect to the casing such that the spots of the plurality of beams rotate on the surface
Implementation Method 3
A method of removing a coating or an adhering substance by irradiation with laser light
Data Source
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AI summary
A portable laser surface processing device includes, for example, a casing configured to house an optical component and a beam shaper serving as the optical component configured to divide laser light into a plurality of beams, wherein the laser light divided into the plurality of beams by the beam shaper is output to a surface of an object to process the surface, and the portable laser surface processing device includes a moving mechanism configured to move the beam shaper with respect to the casing such that spots of the plurality of beams move on the surface while the laser beam is output. The portable laser surface processing device may further include, as the moving mechanism, a rotation mechanism configured to rotate the beam shaper with respect to the casing such that the spots of the plurality of beams rotate on the surface.