Variable Wavefront Divergence AR Display for Health Analysis
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Solution Overview
Problem
Current augmented reality (AR) and virtual reality (VR) technologies face challenges in providing a comfortable and natural-feeling presentation of virtual image elements amidst real-world imagery, particularly due to accommodation-vergence mismatches and the complexity of human visual perception.
Innovation Solution
A display system comprising a head-mounted display with waveguides that project light with variable wavefront divergence, sensors for collecting user data, and processors to update prediction models based on collected data, allowing for long-term wear and accurate health analysis and intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional AR/VR display technologies are used, then virtual image elements can be presented to users, but accommodation-vergence mismatches occur causing discomfort and unnatural perception
Solution Approach 1:
The patent changes the optical parameters of the display system by implementing variable wavefront divergence that dynamically adjusts to match accommodation-vergence relationships. This involves modifying the divergence of light waves presented to the user's eyes to correspond with the perceived depth of virtual objects, thereby resolving the mismatch between accommodation (focus) and vergence (eye convergence) that causes discomfort in conventional AR/VR systems.
2Manufacturing precision
If AR display presents multiple depth planes with variable wavefront divergence, then realistic depth perception is achieved, but device complexity increases
Solution Approach 1:
The patent implements a dynamic optical system where the wavefront divergence is not fixed but varies continuously to match different depth planes. The system dynamically adjusts the divergence of light waves based on the perceived depth of virtual objects, allowing multiple focal planes to be presented realistically. This dynamic adjustment mechanism enables accurate depth perception while managing optical complexity through adaptive control.
3Measurement precision
If sensors continuously collect user data for health analysis, then accurate health insights are obtained, but user privacy and data security concerns increase
Solution Approach 1:
The patent implements a feedback mechanism where sensor data collected from users is processed to provide health analysis insights. The system continuously monitors user interactions, physiological responses, and usage patterns, then feeds this information back through prediction models to generate personalized health recommendations. This closed-loop feedback system ensures that data collection is purposeful and directly benefits user health while maintaining accountability for data usage.
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 enables comfortable and realistic AR experiences by matching accommodation and vergence cues, facilitating extended wear durations and providing accurate user health analysis and intervention based on continuous data collection.
Implementation Method 1
the waveguide is configured to transmit light from a surrounding environment to the user
Data Source
AI summary
Augmented reality systems and methods for user health analysis. Methods for user health analysis may include collecting data for an initial prediction model and continuing to collect additional data based on one or more data criteria. The methods may further include updating the initial prediction model based on the additional data to produce a revised prediction model or causing an intervention to occur based on the additional data. The data may be collected by a display system including one or more sensors configured to collect user-specific data and a display device configured to present virtual content to a user. The display device may be configured to output light with variable wavefront divergence.