Hybrid Laser Head Beam Condensing Feedback Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hybrid laser processing systems face challenges in detecting and adjusting the condensing state of laser beams in real time, requiring interruptions during processing to adjust the beam positions and spot diameters, which is inefficient.
Innovation Solution
A laser processing head with a dichroic mirror, workpiece-side and detection-side condensing lenses, and a photodetector that allows for real-time detection and adjustment of the condensing state of laser beams by using a bend mirror and actuators to align and focus the beams on both the workpiece and image sensor planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If real-time detection of condensing state is implemented, then processing efficiency is improved, but device complexity increases
Solution Approach 1:
The patent uses a photodetector to detect the condensing state of laser beams by receiving a portion of the laser light that is reflected or transmitted by the dichroic mirror. This creates an optical copy or representation of the beam condensing state without requiring direct measurement at the workpiece location, enabling real-time monitoring while maintaining system efficiency
Solution Approach 2:
The dichroic mirror serves as an intermediary element that both directs the laser beams to the workpiece and provides a reflected/transmitted portion to the photodetector for detection. This dual function allows the system to monitor beam condensing state in real-time without adding separate complex detection systems
2Manufacturing precision
If real-time adjustment of condensing state is enabled, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the photodetector continuously monitors the condensing state of the laser beams and provides information that enables real-time adjustment. The system uses this feedback to maintain optimal condensing conditions, ensuring precise laser processing while automating the adjustment process
Solution Approach 2:
The system enables self-adjustment of the condensing state through automated control based on photodetector measurements. The actuators automatically adjust the condensing lenses or mirror positions to maintain optimal beam focusing, reducing the need for manual intervention and simplifying operation
3Productivity
If continuous laser processing is implemented, then productivity is improved, but measurement precision deteriorates
Solution Approach 1:
The patent enables continuous laser processing by implementing real-time detection and adjustment mechanisms that allow the system to maintain optimal condensing conditions throughout the entire processing operation. The photodetector continuously monitors beam parameters, and actuators continuously adjust as needed, ensuring uninterrupted high-precision processing
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 real-time detection and adjustment of the condensing state of laser beams, allowing for continuous hybrid laser processing without interruptions, improving processing efficiency and accuracy.
Implementation Method 1
a dichroic mirror that transmits most of the first laser beam toward the workpiece and reflects most of the second laser beam toward the workpiece
Implementation Method 2
a workpiece-side condensing lens that condenses each of the first laser beam and the second laser beam to irradiate the workpiece with the condensed laser beams
Implementation Method 3
a photodetector that receives each of a rest of the first laser beam reflected by the dichroic mirror and a rest of the second laser beam transmitted through the dichroic mirror
Data Source
AI summary
Laser processing head (10) includes a bend mirror that bends a second laser beam in a direction intersecting a first laser beam; a dichroic mirror that transmits most of the first laser beam and reflects most of the second laser beam; a workpiece-side condensing lens that condenses the most of the each laser beam to irradiate the workpiece; an image sensor that receives a rest of the first laser beam reflected by the dichroic mirror and a rest of the second laser beam transmitted through the dichroic mirror; a detection-side condensing lens that condenses the rest of the each laser beam to irradiate the image sensor; and an adjuster that adjusts a workpiece-side condensing state on an image plane on a workpiece side. The image sensor detects a detection-side condensing state on an image plane on an image sensor side. The workpiece-side condensing state is adjusted by the adjuster based on the detection-side condensing state.