Adjustable Zoom Laser Optics for Uniform Sidewall Processing
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Solution Overview
Problem
Laser processing devices struggle with achieving precise processing on side walls with angles less than or equal to 90° due to repeated or missed processing, leading to inefficiencies and increased costs in manufacturing.
Innovation Solution
A laser processing device comprising a laser source, zoom assembly, scanning galvanometer assembly, and reflection assembly with adjustable lens groups and reflectors, allowing for precise control of laser light direction and focus to maintain a focused state on uneven side walls, reducing the need for multi-axis moving mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a fixed focus position is used in conventional laser processing devices, then the device structure is simple, but the focused spot size changes sharply on side walls with height differences, causing non-uniform surface treatment
Solution Approach 1:
The patent applies the dynamics principle by making the zoom assembly adjustable to change the principle plane position dynamically. The zoom assembly includes multiple lens groups that can be moved relative to each other, allowing the principle plane to be adjusted to different positions along the optical axis. This enables the focused spot to remain uniform across side walls with varying heights, resolving the contradiction between maintaining simple device structure and achieving uniform surface treatment.
Solution Approach 2:
The patent applies the parameter changes principle by adjusting the position of the principle plane of the zoom assembly. By changing the distance between lens groups in the zoom assembly, the principle plane position is varied to match different workpiece geometries. This parameter adjustment ensures that the focused spot size remains consistent on side walls with height differences, improving surface treatment uniformity without requiring complex multi-axis moving mechanisms.
2Adaptability or versatility
If multi-axis moving mechanisms are used to process side walls with varying heights, then processing coverage is improved, but the device complexity and manufacturing costs increase
Solution Approach 1:
The patent applies the mechanics substitution principle by replacing complex multi-axis moving mechanisms with an adjustable zoom assembly. Instead of moving the entire laser processing head or workpiece along multiple axes, the invention adjusts the principle plane position of the zoom assembly to adapt to different side wall heights. This substitution maintains full processing coverage while significantly reducing device complexity and manufacturing costs.
Solution Approach 2:
The patent applies the universality principle by designing the zoom assembly to serve multiple functions. The adjustable principle plane position allows the same optical system to process workpieces with different geometries and side wall heights without requiring additional moving mechanisms. This multi-functional design achieves versatile processing coverage while keeping the device structure relatively simple.
3Manufacturing precision
If the principle plane position is not adjusted, then the device operation is simple, but repeated or missed processing occurs on side walls with angles less than or equal to 90°
Solution Approach 1:
The patent applies the preliminary action principle by pre-adjusting the principle plane position of the zoom assembly before processing. Based on the known workpiece geometry and side wall angle, the principle plane is positioned in advance to ensure accurate focusing on the target area. This preliminary adjustment prevents repeated or missed processing on side walls with angles less than or equal to 90°, while keeping the actual processing operation simple.
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 improves processing quality by maintaining a uniform focused spot on side walls with varying heights, reducing repeated or omitted processing and lowering manufacturing costs through precise laser control and full-coverage processing without the need for complex multi-axis movements.
Implementation Method 1
a zoom assembly for converging a laser light emitted by the laser source
Implementation Method 2
A distance between any two lens groups of the plurality of lens groups is adjustable to adjust a position of a principle plane of the zoom assembly, thereby adjusting a focus position reflected to the workpiece
Implementation Method 3
a reflection assembly includes a plurality of reflectors for reflecting the laser light emitted by the scanning galvanometer assembly to the workpiece to change a direction of the laser light
Data Source
AI summary
A laser processing device includes a laser source, a zoom assembly for converging a laser light emitted by the laser source, a scanning galvanometer assembly for receiving the converged laser light exiting from the zoom assembly and emitting the laser light at a preset angle, and a reflection assembly arranged between the scanning galvanometer assembly and a workpiece. The zoom assembly includes a plurality of lens groups, the reflection assembly includes a plurality of reflectors for reflecting the laser light emitted by the scanning galvanometer assembly to the workpiece. A distance between any two lens groups of the plurality of lens groups is adjustable to adjust a position of a principle plane of the zoom assembly, thereby adjusting a focus position reflected to the workpiece.