Encoded Optical Element for Laser Processing Head
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Solution Overview
Problem
It is challenging to ensure correct installation and orientation of non-planar mirrors in a laser processing head due to visual ambiguity, leading to potential mounting errors and risk of damage to surrounding components.
Innovation Solution
Mechanical encoding on both the optical element and the housing, such as profiles and recesses or threaded holes and pins, ensures unambiguous identification and correct installation orientation, preventing improper installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If mirrors are labeled with material numbers or text labels for identification, then the identification capability is improved, but the reliability of correct installation deteriorates due to potential confusion and labeling errors
Solution Approach 1:
The patent applies different colors to mirror surfaces (e.g., blue, green, red) corresponding to different focal lengths. This color coding provides immediate visual differentiation that is difficult to confuse with text labels, directly improving identification capability while enhancing installation reliability through intuitive color-based sorting and matching with correspondingly colored receptacles in the housing
Solution Approach 2:
The patent introduces asymmetric mechanical features including a non-circular encoding profile on the mirror carrier and complementary asymmetric recesses in the housing. This asymmetry creates a mechanical constraint that allows installation only in the correct orientation, eliminating confusion even when mirrors have similar appearances, thus significantly improving installation reliability
2Device complexity
If mirrors are mounted without mechanical encoding, then the device complexity is reduced, but the ease of operation deteriorates due to difficulty in distinguishing mirror orientations and positions
Solution Approach 1:
The patent employs asymmetric mechanical encoding consisting of a profile with teeth, projections, or curvatures on the mirror carrier that must engage with complementary asymmetric recesses in the housing. This simple asymmetric feature provides unambiguous orientation guidance and prevents incorrect installation, greatly improving ease of operation while adding minimal complexity to the mounting mechanism
Solution Approach 2:
The patent incorporates color-coded mirror surfaces and corresponding colored receptacles or indicators in the housing. This visual encoding system provides immediate identification of the correct mirror position and orientation, making the installation process intuitive and error-proof, thereby significantly improving ease of operation with minimal additional complexity
3Reliability
If mechanical encoding is added to prevent incorrect installation, then the reliability of correct installation is improved, but the device complexity increases due to additional encoding components
Solution Approach 1:
The patent implements mechanical encoding through asymmetric profiles and recesses that are integrated into the existing mirror carrier and housing structures. These encoding features utilize simple geometric asymmetries (teeth, projections, curvatures) rather than complex mechanisms, providing reliable prevention of incorrect installation while minimizing the increase in device complexity
Solution Approach 2:
The patent applies color coding to mirror surfaces and corresponding receptacles as a complementary encoding system. This visual encoding method adds minimal physical complexity while significantly enhancing reliability by providing immediate visual confirmation of correct mirror selection and orientation, working synergistically with the mechanical asymmetric encoding
4Stability of the object's composition
If threaded pins are made permanent through gluing, then the stability of the encoding is improved, but the ease of repair deteriorates due to difficulty in modifying the encoding
Solution Approach 1:
The patent incorporates threaded holes in the mirror carrier during manufacturing, allowing encoding pins to be installed and glued in advance. This preliminary preparation enables the encoding to be established as a stable, permanent feature during assembly, while still allowing for relatively easy modification if needed by simply removing and replacing the pins, thus balancing stability with repairability
Data Source
AI summary
A device for a laser processing head includes an optical element configured for attachment to the laser processing head, a housing for the laser processing head configured to receive the optical element, and a mechanical encoding disposed on at least one of the optical element and the housing to permit installation of a predetermined optical element at a predetermined orientation into the housing.