See-through Display Content Positioning for Convergence Control
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Solution Overview
Problem
Current head-mounted displays (HMDs) that provide a see-through view face challenges in optimizing user experience due to complexities in presenting content, particularly in ensuring effective integration of digital content with the real environment.
Innovation Solution
A head-worn display system that includes a display panel and a processor to present digital content in a portion of the field of view, with blank areas on the edges, allowing for adjustment of content position and convergence distance based on user gaze and content type, using an eye imaging system to measure convergence and adjust the digital content's position accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If digital content is presented only in the middle portion of the field of view, then convergence distance control is improved, but the usable display area is reduced due to blank edges
Solution Approach 1:
The system dynamically shifts the digital content within the field of view based on measured convergence distance. The processor adjusts the content position in real-time according to user gaze and convergence measurements, allowing the content to move between the middle portion (for convergence control) and edge areas (for expanded display). This dynamic repositioning resolves the contradiction by making the display area adaptable rather than fixed.
Solution Approach 2:
The patent introduces temporal dimension to the display positioning problem. Instead of fixing content in a static middle portion, the content is positioned in different spatial locations at different times based on convergence measurements. The system alternates between positioning content in the middle for convergence control and in edge areas for expanded display, utilizing the time dimension to satisfy both requirements.
2Area of stationary object
If digital content is shifted to edge areas, then display area utilization is improved, but convergence distance adjustment capability is reduced
Solution Approach 1:
The system employs continuous feedback from the eye imaging system to monitor convergence distance. Based on this feedback, the processor dynamically determines whether to position content in the middle portion (when convergence adjustment is needed) or in edge areas (when maximum display area is desired). This closed-loop feedback mechanism ensures that convergence control capability is maintained even when content is predominantly displayed in edge areas.
3Adaptability or versatility
If see-through transmission is increased for augmented reality, then user interaction with real environment is improved, but virtual reality immersion is reduced due to lower content visibility
Solution Approach 1:
The system applies different transmission characteristics to different spatial regions of the display. The middle portion of the field of view maintains higher opacity for better virtual reality content visibility and convergence control, while edge areas provide enhanced see-through transmission for augmented reality interaction. This local differentiation of optical properties allows both AR and VR modes to function effectively simultaneously.
Data Source
AI summary
Embodiments include a head-worn display including a display panel sized and positioned to produce a field of view to present digital content to an eye of a user, and a processor adapted to present the digital content to the display panel such that the digital content is only presented in a portion of the field of view, the portion being in the middle of the field of view such that horizontally opposing edges of the field of view are blank areas. The processor is adapted to shift the digital content into one of the blank areas to adjust the convergence distance of the digital content and thereby change the perceived distance from the user to the digital content.