Substrate Inspection Light Intensity Control
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Solution Overview
Problem
Conventional substrate-check equipment faces challenges in maintaining consistent image quality due to varying substrate thicknesses, requiring manual adjustments of camera apertures and control unit settings, which complicates and slows down the quality checking process.
Innovation Solution
The equipment features adjustable LED lamps with intensity control units, connected to a control unit that adjusts light intensity based on substrate thickness, ensuring consistent image quality and streamlining the checking process by eliminating the need for manual aperture adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual aperture adjustment is used to capture thick parts of substrate, then image quality of thick parts is improved, but checking time and operational complexity increase
Solution Approach 1:
The patent applies dynamics by making the light source intensity adjustable rather than fixed. The controlling unit dynamically changes the light intensity based on the thickness of different substrate portions, allowing the system to adapt to varying optical conditions without manual intervention for each measurement scenario.
Solution Approach 2:
The patent changes the parameter of light intensity to resolve the contradiction. Instead of adjusting camera aperture (which requires manual intervention and time), the system adjusts the light source intensity through a controlling unit, maintaining image quality while enabling automated operation.
2Measurement precision
If manual aperture adjustment is performed for different substrate thicknesses, then measurement accuracy is improved, but device complexity and operational difficulty increase
Solution Approach 1:
The system performs self-service by automatically adjusting light intensity based on substrate thickness detection. The controlling unit handles the parameter adjustment without requiring operational personnel to manually change aperture settings, making the system both accurate and easy to operate.
Solution Approach 2:
The patent replaces the mechanical aperture adjustment system with an electronic light intensity control system. Instead of physically changing camera lens aperture (mechanical adjustment), the system uses electronic control of LED light intensity, eliminating the need for manual mechanical adjustments while maintaining measurement accuracy.
3Device complexity
If constant light intensity is used, then device simplicity is maintained, but image quality consistency across different substrate thicknesses deteriorates
Solution Approach 1:
The patent implements dynamics by enabling the light source intensity to vary automatically based on substrate characteristics. The controlling unit receives substrate thickness information and dynamically adjusts light intensity to maintain consistent image quality across different thicknesses, resolving the contradiction between simplicity and consistency.
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 solution enables rapid and accurate substrate quality assessment by automatically adjusting light intensity, improving the efficiency and convenience of the checking procedure while maintaining consistent image quality across different substrate thicknesses.
Implementation Method 1
The lamp has a light source with an adjustable intensity. The image acquisition unit is a camera with a linear charge coupled device (linear CCD).
Implementation Method 2
The upper and lower surfaces respectively reflect the lights. The image acquisition units respectively capture reflected light from the upper and lower surfaces to generate signals
Data Source
AI summary
A substrate-check equipment has a conveyer, at least two lamps, at least two image acquisition units and a control unit. The conveyer conveys a substrate. The lamps are mounted respectively above and below the conveyer to respectively shine light onto the substrate. Each lamp has an adjusting unit for adjusting intensity of the lamp. The image acquisition units correspond to the lamps and are mounted respectively above and below the conveyer to respectively capture images of the substrate and generate image signals. The control unit is electronically connected to the lamp and the image acquisition units. Emitted light intensity of the lamps is adjusted to ensure consistent image quality and speed up procedures for checking the substrate.