Welding Camera Light Shield Structure for Ghosting Reduction
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Solution Overview
Problem
Camera systems during welding processes struggle to generate high-quality images due to ghosting caused by strong welding light reflections and difficulty in accurately capturing the surrounding environment, making it challenging to determine the welding status effectively.
Innovation Solution
Implementing a camera system with a light shield cartridge structure containing a blackening filter and neutral density filter to control unwanted light reflections, combined with high dynamic range (HDR) technology to process images and synthesize multiple frames, minimizing ghosting and enhancing image clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a camera captures images near welding light, then welding images can be generated for monitoring, but ghosting occurs due to strong light reflection causing multiple images and reduced accuracy
Solution Approach 1:
A polarizing filter is introduced as an intermediary component between the welding light source and the camera sensor. The filter selectively transmits light waves with specific polarization orientations while blocking others, thereby reducing ghosting effects caused by reflected welding light without completely blocking the useful welding images needed for monitoring
Solution Approach 2:
The system changes the polarization parameter of incoming light by using a polarizing filter oriented at specific angles (e.g., 45 degrees relative to the welding direction). This parameter change allows the camera to capture welding images with reduced ghosting by selectively filtering light based on its polarization state
2Measurement precision
If the camera captures the surrounding welding environment, then comprehensive monitoring is achieved, but image resolution decreases due to the bright welding light overwhelming the sensor
Solution Approach 1:
The polarizing filter serves as a mediator that reduces the intensity of welding light reaching the camera sensor while maintaining the visibility of the surrounding environment. By blocking polarized reflected light, the filter prevents the sensor from being overwhelmed, thereby preserving image resolution for environmental monitoring
Solution Approach 2:
The system applies different light transmission qualities to different spatial regions: the polarizing filter provides strong light blocking in the direction of welding light reflection while maintaining higher transparency for scattered environmental light, thereby achieving both glare reduction and environmental visibility
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
The solution provides high-resolution welding images that clearly depict the welding environment, reducing ghosting and enabling accurate determination of welding conditions.
Implementation Method 1
a polarizing filter configured to block polarized light from the welding light source
Implementation Method 2
a blackening filter and an anti-reflection coating layer disposed on at least one surface of the blackening filter
Implementation Method 3
a neutral density filter disposed in front of the blackening filter
Implementation Method 4
an anti-reflection coating layer disposed on at least one surface of the blackening filter
Data Source
AI summary
Provided is a camera system. The camera system includes a light shield disposed between a camera and a light source and including a light shield cartridge structure configured to control light entering the camera, an image capturing portion including the camera configured to obtain a plurality of image frames, and a processor configured to generate a plurality of combined preprocessed images based on two or more image frames selected from the plurality of image frames based on set criteria and synthesize the plurality of combined preprocessed images to generate at least one combined image.