Laser Marking Ventilation for Dust-Free Optical Paths
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Solution Overview
Problem
The readability, accuracy, contrast, and quality of laser markings on solid materials are compromised due to scattering and attenuation caused by dust and smoke in the optical path between the laser and the object.
Innovation Solution
A marking apparatus that incorporates a ventilation system with blast pipes and optional vacuum pipes to remove dust and smoke from the optical path, ensuring a clear and accurate laser beam delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If laser beam is delivered through an optical path containing dust and smoke, then the marking process can be performed, but the readability, accuracy, contrast and quality of the marks are reduced due to scattering and attenuation
Solution Approach 1:
The patent extracts and removes dust and smoke particles from the optical path using a vacuum system with a vacuum source and nozzle. By actively removing the harmful particles (dust and smoke) from the laser beam path, the system eliminates the scattering and attenuation effects that degrade marking quality, thereby resolving the contradiction between maintaining marking accuracy and avoiding harmful factors in the optical path.
2Reliability
If optical power is delivered to the object through a contaminated optical path, then marking can be performed, but the optical power is affected by scattering and attenuation causing reduced mark quality
Solution Approach 1:
The vacuum system extracts dust and smoke particles that cause optical power attenuation. By removing these particles from the optical path, the system prevents energy loss through scattering and absorption, ensuring that sufficient optical power reaches the marking surface consistently, thereby improving mark readability and reliability.
Solution Approach 2:
The system incorporates a controller that monitors the marking process and controls the vacuum source operation. This feedback mechanism ensures the vacuum system operates at appropriate times to maintain optimal optical path conditions, preventing power attenuation and ensuring consistent mark quality throughout the marking process.
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 ventilation system effectively reduces dust and smoke in the optical path, leading to sharper, more accurate, and higher-quality laser markings by minimizing scattering and attenuation.
Implementation Method 1
causing a gas flow through a case of the laser arrangement by a ventilation system
Implementation Method 2
at least one laser source of the laser arrangement outputs optical power along an optical path to a marking area
Implementation Method 3
scattering and attenuation caused by dust and/or smoke in the optical path between the laser and the object
Data Source
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AI summary
A marking apparatus comprising a laser arrangement (100) that outputs optical power along an optical path (210) to a marking area (20). The marking apparatus (2) comprises a case (200) and a ventilation system (204) for causing a gas flow through the case (200), the ventilation system (204) comprising one or more blast pipes (206) connected to the case (200), the one or more blast pipes (206) guiding the gas flow from the case (200) toward the optical path (210) of the optical power between the case (200) and the marking area (20) for reducing dust and/or smoke in the optical path (210).