Mixed Reality Viewing Modes for Individual Shared-Space Views
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Solution Overview
Problem
Existing VR, AR, and MR technologies face challenges in providing realistic and comfortable 3D imagery due to mismatches between accommodation and vergence, leading to eye strain and discomfort.
Innovation Solution
A wearable system that tracks user eye vergence and accommodation to dynamically adjust the focus of projected virtual content, using multi-plane or variable focus systems to align with the user's natural focus, and employs waveguide assemblies to project images at varying focal distances, enhancing depth perception and reducing physiological symptoms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional flat displays are used in VR/AR/MR systems, then device complexity is reduced and ease of manufacture is improved, but accommodation-vergence mismatch occurs leading to eye strain and discomfort
Solution Approach 1:
The display system dynamically adjusts the focal plane position based on the user's accommodation state. The focal plane is moved along the optical axis to match the vergence distance, creating a dynamic focus adjustment mechanism that resolves the accommodation-vergence mismatch and reduces eye strain without requiring complete system redesign
Solution Approach 2:
The system changes the optical parameter of focal distance by adjusting the focal plane position. This parameter adjustment allows the display to present content at varying depths that match the user's natural focusing behavior, improving comfort while maintaining manageable device complexity through controlled parameter variation
2Manufacturing precision
If multi-plane or variable focus systems are implemented to align vergence and accommodation, then user comfort and depth perception are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The display system is segmented into multiple functional components including a focal plane adjustment mechanism, vergence tracking module, and accommodation sensing module. This segmentation allows each component to be optimized and manufactured separately with specific precision requirements, then assembled together to achieve the overall focus alignment precision
Solution Approach 2:
An intermediary control system is introduced that coordinates between the vergence tracking and focal plane adjustment mechanisms. This intermediary layer processes vergence data and translates it into appropriate focal plane positions, simplifying the manufacturing process by providing a clear interface between sensing and actuation components
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 system provides a more realistic and comfortable 3D viewing experience by aligning vergence and accommodation, reducing eye strain and headaches, and allowing for varied focal depth adjustments based on user focus.
Implementation Method 1
employs waveguide assemblies to project images at varying focal distances
Implementation Method 2
tracks user eye vergence and accommodation to dynamically adjust the focus of projected virtual content
Implementation Method 3
tracks user eye vergence and accommodation to dynamically adjust the focus of projected virtual content
Data Source
AI summary
A mixed reality virtual environment is sharable among multiple users through the use of multiple view modes that are selectable by a presenter. Multiple users with wearable display systems may wish to view a common virtual object, which may be presented in a virtual room to any suitable number of users. A presentation may be controlled by a presenter using a presenter wearable system that leads multiple participants through information associated with the virtual object. Use of different viewing modes allows individual users to see different virtual content through their wearable display systems, despite being in a shared viewing space or alternatively, to see the same virtual content in different locations within a shared space.