Modular Optics Assembly for Clean and Stable Laser Alignment
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Solution Overview
Problem
Additive manufacturing systems face issues with particulate and gaseous contaminants affecting the alignment and performance of optical components due to misalignment, accumulation, and thermal effects, leading to undesired changes in laser beam parameters.
Innovation Solution
The optics assembly is designed with modular components featuring adjustable mechanically interlocking connections, gas flow paths to inhibit contaminants, and heat management systems to maintain optical component alignment and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical components are exposed to the additive manufacturing environment, then the system can operate, but particulate and gaseous contaminants accumulate on optical components causing misalignment and performance degradation
Solution Approach 1:
A gas flow path is introduced as an intermediary medium between the contaminants and optical components. The gas flow acts as a protective barrier that actively removes particulate and gaseous contaminants from the optical path, preventing accumulation while allowing the additive manufacturing process to proceed
Solution Approach 2:
The harmful contaminants are extracted from the optical environment through the gas flow path. The system actively removes unwanted substances (particulates and gases) from the vicinity of optical components, maintaining a clean optical environment necessary for reliable operation
2Power
If thermal effects are present in the additive manufacturing process, then material fusion occurs, but thermal effects cause misalignment and performance changes in optical components
Solution Approach 1:
The system segments the thermal management function by introducing a dedicated gas flow path that separates the high-power laser processing zone from the optical components. The gas flow creates a thermal boundary layer that protects optical components from direct thermal exposure while allowing high power laser operation for material fusion
Solution Approach 2:
The gas flow acts as a thermal intermediary, allowing laser energy to reach the material for fusion while preventing excessive heat transfer to optical components. The gas medium mediates between the high-power laser source and temperature-sensitive optical elements
3Reliability
If gas flow is introduced to protect optical components, then contaminant accumulation is reduced, but the system complexity increases
Solution Approach 1:
The gas flow path is designed to serve multiple functions simultaneously: it protects optical components from particulate contaminants, removes gaseous contaminants, and provides thermal management. This multi-functionality reduces the need for separate systems and minimizes overall device complexity
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 solution effectively prevents particulate and gaseous contaminants, maintains optical component alignment, and manages thermal effects, ensuring consistent laser beam quality and performance in additive manufacturing systems.
Implementation Method 1
The gas flow path may be configured to allow the flow of gas to pass through each of the optical fiber module, the optics shield module, and each optics module of the at least one optics module
Implementation Method 2
The optics shield module may include a debris shield configured to inhibit particulate matter from entering the optics assembly
Implementation Method 3
Each optical component may be configured to interact with at least one laser beam from the at least one optical fiber as the at least one laser beam passes through the optics assembly
Data Source
AI summary
An additive manufacturing system includes an optics assembly. The optics assembly includes a plurality of serially arranged and connected modules. Each module of the plurality of serially arranged and connected modules includes a module housing. Each module housing includes a first end portion and a second end portion. The first end portion includes a first module fitting and the second end portion includes a second module fitting. The first and second module fittings are each configured to form a respective adjustable mechanically interlocking connection with an adjacent module of the optics assembly. At least one module of the plurality of serially arranged and connected modules includes at least one optical component disposed within the associated module housing. The at least one optical component is configured to interact with at least one laser beam as the at least one laser beam passes through the optics assembly.