Laser Marking Condition Setting Using Test Cell Luminance
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Solution Overview
Problem
Conventional laser processing systems require time and effort to set appropriate irradiation conditions for processing targets, especially for printing codes readable by machines, as they necessitate repeated trials and sample printing, which is inefficient.
Innovation Solution
A laser processing system that includes a laser processing device and a verification device, where the processing device sets different irradiation conditions for test cells within a processing pattern and the verification device calculates luminance values to determine optimal irradiation conditions for main processing, allowing for efficient setting of irradiation conditions without extensive trial and error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If repeated sample printing is performed to set appropriate irradiation conditions, then the accuracy of processing condition setting is improved, but the time and effort required increases
Solution Approach 1:
The system performs preliminary test processing on a small number of test cells before main processing. The setting unit sets different irradiation conditions for each test cell in advance, and the verification device evaluates these test results to determine optimal conditions for the entire processing pattern, avoiding repeated trial-and-error on the full pattern.
Solution Approach 2:
The processing pattern is divided into multiple cells, with a small subset designated as test cells. This segmentation allows the system to evaluate different irradiation conditions on representative samples rather than processing the entire pattern repeatedly, significantly reducing time and effort while maintaining accuracy.
2Productivity
If multiple test cells with different irradiation conditions are processed, then the productivity of finding optimal conditions is improved, but the device complexity increases
Solution Approach 1:
The laser processing device is designed to perform multiple functions: it can process both test cells and main processing targets using the same hardware configuration. The control unit manages different irradiation conditions for test cells and automatically transfers the optimal conditions to main processing, eliminating the need for separate testing equipment.
Solution Approach 2:
The verification device captures images of processed test cells and calculates luminance values, providing feedback to the setting unit. This feedback loop enables automatic determination of optimal irradiation conditions based on actual processing results, improving productivity through automated condition optimization rather than manual trial-and-error.
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 the rapid and efficient setting of appropriate irradiation conditions for laser processing, reducing the time and effort required to achieve readable codes on processing targets by using test cells and luminance value analysis.
Implementation Method 1
a laser processing device configured to process a processing target in accordance with a processing pattern
Implementation Method 2
an imaging unit configured to capture an image of the processing pattern formed on the processing target
Data Source
AI summary
A laser processing device includes a setting device that sets an irradiation condition of laser light, and a first storage that stores the set irradiation condition. The setting device sets different irradiation conditions respectively for cells included in test cells. A verification device captures an image of the processing pattern and calculates luminance values for the cells respectively. The setting device sets at least one of the irradiation conditions for main processing, based on information on luminance values of the test cells extracted from the luminance values for the cells and based on the irradiation conditions set for the test cells.