Magnetic Trap Structure for Laser Window Debris Protection
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Solution Overview
Problem
Existing laser modules suffer from debris particles generated during laser processing, which contaminate and damage optical components, necessitating frequent maintenance and reducing productivity.
Innovation Solution
A magnetic trap structure comprising a frame made of soft magnetic material and permanent magnets is attached to the laser module, creating an inhomogeneous magnetic field that traps debris particles, preventing them from reaching sensitive optical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective cover is interposed on the optical path to prevent debris penetration, then optical components are protected from damage, but optical quality is compromised and maintenance costs increase
Solution Approach 1:
A magnetic field is introduced as an intermediary between the debris particles and the optical components. The magnetic field acts as an invisible barrier that deflects debris particles without physically obstructing the optical path, thereby protecting optical components while maintaining optical quality without requiring a protective cover in the beam path
Solution Approach 2:
The mechanical protective cover system is replaced with a magnetic field-based protection system. Instead of using a physical barrier that blocks debris particles, a magnetic field is used to actively deflect and redirect particles away from the optical components, eliminating the need for a mechanical cover that would compromise optical quality
2Reliability
If a protective cover is used to prevent debris accumulation, then optical components are protected, but frequent replacement and maintenance are required
Solution Approach 1:
The magnetic field serves as a protective intermediary that actively deflects debris particles before they can accumulate on optical components. This eliminates the need for frequent maintenance and replacement of protective covers, as the magnetic field continuously prevents particle accumulation without requiring physical intervention
Solution Approach 2:
The magnetic field provides continuous, automatic protection against debris accumulation without requiring external maintenance or intervention. The system self-regulates by constantly deflecting particles away from optical components, eliminating the need for scheduled maintenance shutdowns and manual cover replacements
3Manufacturing precision
If high-quality materials are used for protective covers to ensure optical neutrality, then optical quality is maintained, but material and staff costs increase
Solution Approach 1:
The expensive high-quality material protective covers are replaced with a magnetic field system that requires no special materials in the optical path. The magnetic field is generated by standard magnets and power supplies, eliminating the need for costly optical-grade materials like SiO2 or ZnS substrates while maintaining optical quality
Solution Approach 2:
Instead of investing in expensive, durable protective covers that still require frequent replacement, the invention uses a cost-effective magnetic field system that provides ongoing protection without the need for costly material replacements. The magnetic field system uses inexpensive components that can be maintained at lower cost than high-quality optical materials
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 magnetic trap structure enhances the durability of optical components by reducing debris contamination, allowing longer maintenance intervals and improving production quality without affecting optical performance.
Implementation Method 1
The magnetic trap structure comprises a frame structure and one or more magnets for generating a magnetic field
Implementation Method 2
The one or more magnets are configured such that the magnetic field they generate is inhomogeneous at least in the window area... debris particles can be captured by the magnetic trap structure
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention refers to a laser module structure (10) for a laser module (50) comprising a housing (12) for receiving at least one laser deflection system therein and a magnetic trap structure (30) arranged around a laser-transparent window (14) of the housing (12) and configured for capturing debris particles (202) of a laser-processed work material such that the captured debris particles (202) do not reach and/or cross the laser-transparent window. The invention further refers to a laser module structure arrangement (60) comprising first and second mutually attachable laser module structures according to the invention, to a laser module incorporating a laser module structure according to the invention and to a method of laser-processing a work material using a laser module comprising using a laser module structure according to the invention for capturing debris particles (202) of the laser-processed work material.