Adjustable Light Direction for Color Filter Detection
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Solution Overview
Problem
Conventional detection apparatuses for color filters with long rectangular pixel units suffer from reduced accuracy and efficiency due to a fixed light direction, which does not align with the orientation of pixel units, leading to dark images and mura issues when detecting filters with different orientation specifications.
Innovation Solution
A detection apparatus and method that adjusts the light direction of the light source to coincide with the orientation of the pixel units on the color filter, using a light adjusting module to ensure proper illumination and image capture, thereby improving detection accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the light direction of the light source module is kept unchanged, then the device structure is simple, but the detection accuracy deteriorates when the pixel unit orientation does not coincide with the light direction
Solution Approach 1:
The light source module is designed with adjustable light direction capability, allowing the illumination direction to be dynamically changed to coincide with the orientation of pixel units. This dynamic adjustment resolves the contradiction by enabling the system to adapt to different detection scenarios without increasing overall structural complexity.
Solution Approach 2:
The light direction parameter of the light source module is made variable rather than fixed. By changing the illumination direction parameter to match the pixel unit orientation, the system achieves high detection accuracy while maintaining a relatively simple structure through parameter adjustment rather than complex mechanical design.
2Ease of operation
If the light direction does not coincide with the pixel unit orientation, then the device is easier to operate with fixed settings, but the detection precision deteriorates due to image differences and mura issues
Solution Approach 1:
The detection apparatus automatically determines the orientation of pixel units and adjusts the light direction accordingly without requiring manual intervention. This self-service mechanism maintains ease of operation while ensuring detection precision by aligning the light direction with the pixel unit orientation.
Solution Approach 2:
The system incorporates feedback mechanisms that detect the orientation of pixel units and use this information to adjust the light direction. This feedback loop ensures that the light always coincides with the correct orientation, maintaining both ease of operation and high detection precision.
3Device complexity
If a fixed light direction is used, then the device complexity is low, but the adaptability to different pixel unit orientations deteriorates
Solution Approach 1:
The light source module is designed to perform multiple functions: it can illuminate in different directions to accommodate various pixel unit orientations. This multi-functionality is achieved through a relatively simple adjustable mechanism, resolving the contradiction between device complexity and adaptability.
Solution Approach 2:
The light direction is made dynamic and adjustable rather than fixed, enabling the system to adapt to different pixel unit orientations. This dynamic capability is implemented with minimal additional complexity through mechanisms such as adjustable light sources or movable components.
Data Source
AI summary
A detection apparatus, a detection method and a detection system are provided. The detection apparatus includes: a light source module used to provide illumination for color filters; an image obtaining module used to obtain image data of the color filters; a light adjusting module disposed at a light-emitting side of the light source module and used to adjust a light direction of the light source module to make the light direction coincide with an orientation of the pixel units on a first direction or a second direction perpendicular to the first direction; a data processing module connected to the image obtaining module and used to perform a processing on the image data and judge whether there is an unqualified pixel unit in the pixel units as per a result of the processing. The light direction is adjustable to coincide with the orientation of pixel units.