Laser Spot Analyzer Focal Alignment for Accurate Spot Detection
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Solution Overview
Problem
Existing laser spot detection methods rely on subjective tester judgments, leading to low stability and accuracy in spot detection.
Innovation Solution
A method and system that automatically adjusts the spot analyzer to a focal position on the main optical axis based on real-time laser spot size changes, using processors and application programs to control the movement and determine spot detection results, including spot size, shape, and intensity data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the position of the spot analyzer is adjusted based on the experience of testers, then the spot detection can be performed, but the testing accuracy is affected by subjective judgments, resulting in low stability of spot detection
Solution Approach 1:
The patent replaces the manual mechanical adjustment system with an automated control system. The processor automatically controls the spot analyzer to move along the main optical axis based on real-time spot size feedback, eliminating the need for tester experience and subjective judgment. This substitution of manual operation with automated control directly resolves the contradiction by providing both high measurement precision and reliable stability.
Solution Approach 2:
The patent implements a feedback mechanism where the spot analyzer continuously measures spot size at different positions, and the processor uses this feedback information to automatically adjust the spot analyzer's position. The system monitors spot size changes and stops movement when the minimum spot size is detected, ensuring accurate and stable focal point detection without relying on human judgment.
2Reliability
If automated control is implemented to move the spot analyzer to focal position, then detection stability is improved, but device complexity increases
Solution Approach 1:
The processor in the patent serves multiple functions: it controls the spot analyzer's movement, processes spot size data, determines when the focal position is reached, and generates detection results. By making the processor multi-functional, the patent avoids adding separate dedicated components for each function, thereby improving detection stability while minimizing the increase in device complexity.
Solution Approach 2:
The system performs self-adjustment through automated feedback control. The processor automatically interprets spot size measurements and controls the spot analyzer's position without requiring external intervention or complex external control systems. This self-service capability improves reliability while keeping the control system relatively simple.
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
Enhances detection accuracy and efficiency by eliminating reliance on human experience, ensuring precise alignment to the focal position and improving the overall detection process.
Implementation Method 1
a spot analyzer is then used to detect the size of the focused laser spot
Implementation Method 2
a laser focusing lens is used to focus the laser
Implementation Method 3
focus the laser, and a spot analyzer is then used to detect the size of the focused laser spot
Data Source
AI summary
This application provides a spot detection control method, device, and spot detection system, which are applied to spot detection control equipment. First, according to the change information between the laser spot sizes corresponding to different positions on the main optical axis when the laser emitted by the laser is transmitted to these positions, the spot analyzer is controlled to move to the focal position on the main optical axis; then, the spot detection result of the laser is determined based on the first spot information collected by the spot analyzer at the focal position. The first spot information includes at least one of spot size, spot shape, and spot intensity data. This realizes the automatic real-time movement adjustment of the spot analyzer, ensures the accuracy of movement adjustment, improves the efficiency of moving the spot analyzer to the focal position, and thus enhances the detection efficiency of the detection result.