Fluorescent Wheel Flatness Detection via Laser Spot Inner Diameter
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Solution Overview
Problem
The existing methods for detecting flatness in fluorescent wheels within laser light sources are inefficient, leading to increased production complexity and noise in finished machines due to the difficulty in ensuring consistent flatness during machining, resulting in unqualified products and the need for costly noise detection and replacement processes.
Innovation Solution
A method and device that acquire and analyze the inner diameter of a laser spot reflected from a rotating fluorescent wheel's substrate to determine its flatness, allowing for the screening of fluorescent wheels before assembly, thereby reducing the need for noise detection in finished machines and improving production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noise detection is performed on finished machines to reject unqualified products, then product quality is ensured, but detection complexity and production time increase significantly
Solution Approach 1:
The patent performs flatness detection on the fluorescent wheel substrate before assembly into the finished machine. By detecting the laser spot shape and calculating flatness parameters in advance, unqualified substrates are identified and rejected before becoming part of the final product, thus ensuring quality without requiring complex noise detection on finished machines.
Solution Approach 2:
The patent replaces the acoustic noise detection method with an optical measurement system. Instead of using human ears or microphones to detect noise from rotating fluorescent wheels, the system uses a laser to illuminate the substrate and a camera to capture the reflected spot shape, converting an acoustic measurement problem into an optical geometry problem that is easier to automate and quantify.
2Reliability
If noise detection is performed on finished machines to reject unqualified products, then product quality is ensured, but production efficiency decreases
Solution Approach 1:
The patent performs flatness detection on the fluorescent wheel substrate before assembly into the finished machine. By detecting the laser spot shape and calculating flatness parameters in advance, unqualified substrates are identified and rejected before becoming part of the final product, thus ensuring quality without requiring complex noise detection on finished machines.
Solution Approach 2:
The patent extracts the flatness detection step from the final product testing process and places it at the component level during substrate inspection. This separation allows for faster, simpler detection of the critical flatness parameter without requiring assembly of the entire machine, thereby improving production efficiency while maintaining quality control.
3Ease of manufacture
If fluorescent wheels with poor flatness are used, then production cost is reduced, but noise in finished machines increases
Solution Approach 1:
The patent performs flatness detection on the fluorescent wheel substrate before assembly into the finished machine. By detecting the laser spot shape and calculating flatness parameters in advance, unqualified substrates are identified and rejected before becoming part of the final product, thus ensuring quality without requiring complex noise detection on finished machines.
Solution Approach 2:
The patent takes preliminary action to prevent noise generation by detecting and rejecting substrates with poor flatness before they are assembled into finished machines. The laser spot analysis method identifies flatness deviations that would cause axial run-out and wind cutting noise, allowing defective substrates to be discarded before they can generate harmful noise in the final product.
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
This approach significantly enhances production efficiency by ensuring only qualified fluorescent wheels are used, reducing production costs and resources while maintaining product quality by directly assessing flatness through spot diameter analysis, thus eliminating the need for extensive noise detection in finished machines.
Implementation Method 1
a laser configured to emit laser light
Implementation Method 2
the fluorescent wheel is configured to reflect, after receiving laser light emitted by the laser during the rotation, the laser light
Data Source
AI summary
An embodiment of the present disclosure discloses a method for detecting flatness of a fluorescent wheel in a laser light source, comprising: acquiring, during the rotation of a fluorescent wheel, a spot of laser light emitted by a laser reflected from a substrate of the fluorescent wheel; determining an inner diameter of the spot; and determining flatness of the fluorescent wheel according to the inner diameter of the spot.