3D Display Coupled Zone Adjustment for Eye Strain
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Solution Overview
Problem
Current 3D stereoscopic displays often cause eye strain due to decoupling of focus and convergence, leading to discomfort as viewers must maintain focus on the screen while converging at various depths to perceive the 3D illusion, which can result in eye strain over time.
Innovation Solution
A system and method that determine and adjust the size and shape of the coupled zone, a physical volume within the human eye's natural depth of field, by adjusting the position, disparity, size, perspective, and brightness of content within the virtual 3D space to ensure it remains within the coupled zone, using head tracking and dynamic adjustments to prevent content from extending beyond the comfortable viewing area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If content is displayed at various depths in virtual 3D space to create 3D illusion, then stereoscopic effect is improved, but focus-convergence coupling is broken causing eye strain
Solution Approach 1:
The system proactively monitors content position and depth parameters before eye strain occurs, dynamically adjusting content to remain within the coupled zone. This preliminary action prevents the decoupling of focus and convergence that causes eye strain, while still allowing 3D content to be displayed.
Solution Approach 2:
The system changes display parameters (content position, depth, disparity) dynamically based on real-time detection of content location relative to the coupled zone. By adjusting these parameters, the system maintains focus-convergence coupling while preserving the stereoscopic effect.
2Adaptability or versatility
If content is positioned outside the coupled zone to expand viewing flexibility, then content placement freedom is improved, but user comfort deteriorates due to eye strain
Solution Approach 1:
The system continuously monitors content position and provides feedback by dynamically adjusting content parameters to keep them within the coupled zone. This closed-loop feedback mechanism maintains user comfort while allowing content to be displayed in various positions within the comfortable viewing area.
Solution Approach 2:
The system makes the content display dynamic by continuously adjusting content position, depth, and disparity based on real-time conditions. This dynamic adaptation ensures content remains within the coupled zone, maintaining user comfort while providing viewing flexibility.
3Device complexity
If fixed content position is used to simplify display, then system complexity is reduced, but adaptability to user viewpoint changes is worsened
Solution Approach 1:
The system transitions from fixed to dynamic content positioning by continuously adjusting content parameters based on detected user viewpoint. This dynamic approach maintains focus-convergence coupling as the user moves, improving viewpoint adaptability without requiring complex hardware changes.
Solution Approach 2:
The system automatically detects viewpoint changes and self-adjusts content position and depth parameters to maintain coupling within the coupled zone. This self-service mechanism adapts to user movement without requiring manual intervention or complex external control systems.
Data Source
AI summary
Systems and methods for enhancement of a coupled zone of a 3D stereoscopic display. The method may include determining a size and a shape of the coupled zone. The coupled zone may include a physical volume specified by the user's visual depth of field with respect to screen position of the 3D stereoscopic display and the user's point of view. Content may be displayed at a first position with a virtual 3D space and the first position may correspond to a position within the coupled zone. It may be determined that the content is not contained in the coupled zone or is within a specified distance from a boundary of the coupled zone and, in response, display of the content may be adjusted such that the content has a second position in the virtual 3D space that corresponds to another position within the coupled zone.