Automatic Collimation Optics Changer for Flexible Laser Beam Setup
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Solution Overview
Problem
Existing laser machine tools face challenges in efficiently adjusting the intensity and diameter of the laser beam during processing, leading to wear and contamination of optical components, which affects the machining process and requires frequent maintenance.
Innovation Solution
An optical module with an automatic collimation optics changer and a detachable focusing module, allowing for quick adjustment and replacement of optical components, including collimation and focusing lenses, as well as a powder nozzle, to maintain beam intensity and diameter according to processing requirements, while incorporating cooling and temperature regulation to extend lens lifespan and prevent damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed collimation optic is used in the optical module, then the structure is simple and reliable, but the module cannot adapt to different fiber types or transmission distances
Solution Approach 1:
The patent implements a dynamic collimation optic selection mechanism that allows the optical module to switch between different collimation lenses based on the required fiber type and transmission distance. The system includes a lens selection switch and control logic that dynamically adjusts the collimation optic, enabling adaptation to single-mode/multi-mode fibers and varying transmission distances without requiring a fixed, non-adaptable structure.
Solution Approach 2:
The optical module is designed with multi-functionality to handle multiple fiber types (single-mode and multi-mode) and different transmission distances through a single integrated structure. The universal design incorporates multiple collimation lenses that can be selected based on the specific application requirements, making the module versatile rather than dedicated to a single function.
2Productivity
If manual collimation optic selection is required, then device complexity is low, but productivity and ease of operation deteriorate due to manual intervention
Solution Approach 1:
The optical module incorporates an automatic collimation optic selection mechanism that performs the lens selection function without external manual intervention. The system uses built-in control logic and switching mechanisms to automatically select the appropriate collimation lens based on the operating conditions, making the system self-sufficient and eliminating the need for manual configuration during assembly or operation.
Solution Approach 2:
The automatic switching mechanism employs feedback control to determine the appropriate collimation optic based on detected operating parameters such as fiber type and transmission distance requirements. The system monitors these parameters and automatically adjusts the lens selection accordingly, creating a closed-loop control system that enhances productivity while managing complexity through intelligent automation.
3Adaptability or versatility
If the optical module is designed for a specific transmission distance, then manufacturing precision requirements are lower, but adaptability to different transmission scenarios is reduced
Solution Approach 1:
The system dynamically selects collimation lenses with different focal lengths based on the required transmission distance. For short-distance transmission, a lens with a specific focal length is selected, while for long-distance transmission, a different focal length lens is chosen. This dynamic selection allows the system to adapt to various transmission scenarios without requiring extremely high manufacturing precision for a single fixed-distance optimization.
Solution Approach 2:
The patent changes the optical parameter (focal length) of the collimation lens based on the transmission distance requirement. By selecting lenses with different focal lengths for different transmission distances, the system optimizes performance for each scenario without needing to achieve ultra-precise manufacturing tolerances for all possible distances simultaneously, thus managing the precision requirement while maintaining adaptability.
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
Enables efficient and flexible adjustment of the laser beam parameters, reduces maintenance time, and extends the lifespan of optical components by allowing automatic and easy replacement of worn or contaminated parts, thereby improving the overall efficiency and reliability of the machining process.
Implementation Method 1
a first collimation lens 111 that collimates the laser beam output from the laser diode 110
Implementation Method 2
a second collimation lens 121 that collimates the laser beam output from the laser diode 120
Data Source
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AI summary
The invention relates to an optical module (2) for a machine (1) for machining workpieces and/or for producing molded bodies by way of location-selective solidification of material powder into contiguous regions by means of a laser beam. The optical module (2) comprises a housing (8) having means for releasably fastening the optical module (2) to the machine (1), and a collimation optics changer (3) releasably arranged in the housing (8), having at least two collimation optics (4), which can be moved into a beam path of the laser beam for collimating the laser beam. According to the invention, the collimation optics changer (3) has a mechanism for automatically changing the collimation optics (4).