Laser Engraving Casing Layout for Radiation Containment
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Solution Overview
Problem
Existing laser engraving systems fail to effectively prevent the escape of radiation to operator eye level during the engraving process, posing a safety risk.
Innovation Solution
A galvanometric laser source is mounted within a protective casing with the focal point positioned at the bottom edge plane, and the casing is designed for close parallel association with the engraving surface, ensuring minimal radiation exposure by maintaining the focal point within the casing and using motor-controlled movements to align the edge plane with the surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the laser source is mounted within a protective casing with open bottom, then the laser beam can be focused at the bottom edge plane for precise engraving, but radiation may escape to operator eye level creating safety risks
Solution Approach 1:
The patent positions the focal point at the bottom edge plane of the casing, utilizing the third dimension (vertical positioning) to contain the laser beam within the casing structure. The beam focuses precisely at the edge while the casing geometry blocks radiation escape paths to operator eye level, resolving the contradiction between focusing precision and radiation safety.
Solution Approach 2:
The protective casing acts as an intermediary structure between the laser source and the operator. By positioning the focal point at the bottom edge plane and designing the casing with specific geometry, it mediates the laser beam path to achieve both precise engraving capability and radiation containment, preventing direct exposure to the operator.
2Object-affected harmful factors
If the casing is positioned in close parallel association with the target surface, then radiation escape is minimized, but the system requires complex motor controlled movement and angle adjustment mechanisms
Solution Approach 1:
The protective casing is designed to perform multiple functions simultaneously: it contains the laser source, provides radiation shielding, enables precise positioning at the bottom edge plane, and allows angle adjustment for different workpiece orientations. This multi-functionality reduces the need for separate complex mechanisms while achieving both radiation containment and positioning flexibility.
Solution Approach 2:
The casing is mounted on motor controlled movement mechanisms that enable dynamic positioning and angle adjustment. This dynamic capability allows the system to adapt to different workpiece positions and orientations while maintaining the close parallel association required for radiation containment, making the complexity manageable through automated control.
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
Substantially reduces radiation exposure to operators by ensuring the laser beam remains focused within the protective casing, enhancing safety during the engraving process.
Implementation Method 1
a laser source (15) mounted within a protective casing (10)
Implementation Method 2
with a lens (37) mounted within an outer frame (26) configured to allow a workpiece or 'substrate' to be placed within the frame and below the casing during an engraving process
Data Source
AI summary
A laser engraving system in which a galvanometer controlled laser source is mounted within a protective casing with the focal point of the laser source within the bottom edge plane of the casing. The engraving process is performed while maintaining the casing bottom edge on or in substantial parallel proximity and close contact with the surface of the substrate to be engraved such that the escape of radiation to operator eye level is prevented while at all times maintaining the laser source in focus.