Welding Helmet Display With Region-Specific Light Filtering
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Solution Overview
Problem
Welding operators face challenges in accurately viewing their surroundings and welding status due to the high luminance of welding lights, which can cause eye protection issues and reduce welding accuracy, similar to problems encountered in medical procedures using high-luminance lights.
Innovation Solution
A welding information providing apparatus with a camera unit and display system that shields welding light using darkening and neutral density filters, allowing operators to view high-definition images of their surroundings and welding area, improving accuracy by adjusting the field of view and preventing foreign substances from entering the image path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a darkening filter is used to block welding light, then eye protection is improved, but visibility of the welding area is degraded
Solution Approach 1:
The field of view is divided into multiple regions (first field of view for welding area, second field of view for surrounding area). Different filtering strengths are applied to different regions, allowing the welding area to be visible while protecting the operator's eyes from excessive light exposure.
Solution Approach 2:
Different darkening filter transmission characteristics are applied to different regions of the display. The first region corresponding to the welding area has different filtering properties than the second region corresponding to the surrounding area, optimizing both visibility and eye protection locally.
2Object-affected harmful factors
If a darkening filter is used to protect from welding light, then eye safety is improved, but welding accuracy is degraded
Solution Approach 1:
The display is segmented into multiple regions with different filtering characteristics. The welding area region maintains sufficient visibility for precision work while other regions provide stronger eye protection, thereby maintaining welding accuracy while ensuring eye safety.
Solution Approach 2:
Local quality varies across the display regions. The first region (welding area) has optimized transmission for visibility and accuracy, while the second region (surroundings) has stronger filtering for eye protection, resolving the contradiction between safety and precision.
3Object-affected harmful factors
If automatic or manual welding mask is worn, then eye protection is improved, but situational awareness is degraded
Solution Approach 1:
The display system provides multiple functions simultaneously: it protects eyes from welding light while also providing situational awareness by showing both the welding area and the surrounding environment in the same field of view, eliminating the need to remove the mask to check surroundings.
Solution Approach 2:
The system adds a dimensional aspect to the field of view by incorporating a second field of view that shows the surrounding area in addition to the primary welding area, providing comprehensive situational awareness without compromising eye protection.
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 apparatus provides clear, high-quality welding images by shielding welding light, enhancing operator accuracy and comfort by minimizing eye strain and maintaining a consistent view with the actual work site, while preventing external interference.
Implementation Method 1
a camera unit attached to an outer side of the main body and obtaining welding image frames with respect to a welding operation, wherein the camera unit includes a darkening filter blocking welding light generated due to the welding operation
Data Source
AI summary
Provided is a welding information providing apparatus including a main body provided to be worn by a user, a display unit arranged on the main body and including a display for displaying a welding image to the user, at least one camera unit attached to an outer side of the main body and obtaining welding image frames with respect to a welding operation, and a processor configured to control the display to display the welding image generated based on the welding image frames, wherein the camera unit includes a darkening filter blocking welding light generated due to the welding operation.