Mission-Driven AR Virtual Character With Contextual Objects and Gaze Tracking
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Solution Overview
Problem
Existing VR, AR, and MR technologies face challenges in providing realistic and comfortable depth perception, leading to user discomfort and physiological symptoms such as eye strain and headaches due to misalignment between accommodation and vergence cues.
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 ensure alignment, thereby reducing eye strain and enhancing 3D perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional fixed-focus display systems are used, then device complexity is reduced, but user comfort and physiological well-being deteriorate due to accommodation-vergence misalignment
Solution Approach 1:
The patent implements a dynamic focus adjustment system that continuously adapts the focal plane of virtual content based on real-time tracking of user eye vergence and accommodation cues. The system transitions from static fixed-focus displays to dynamic multi-plane focus systems that adjust accommodation distance to match vergence distance, resolving the contradiction by making the system adaptive rather than fixed.
Solution Approach 2:
The system employs feedback mechanisms by tracking user eye vergence and accommodation in real-time and using this information to adjust the focal plane of virtual content. This closed-loop control ensures that accommodation and vergence remain aligned, improving user comfort while managing system complexity through intelligent adaptation.
2Reliability
If multi-plane or variable focus systems are implemented, then accommodation-vergence alignment is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary processing layer that tracks eye vergence and accommodation cues and translates them into appropriate focal plane adjustments. This intermediary system mediates between the user's natural eye movements and the display's focus mechanism, ensuring reliable accommodation-vergence alignment while managing the complexity through intelligent control algorithms.
Solution Approach 2:
The system dynamically changes the focal plane parameter of virtual content based on tracked eye movements and accommodation cues. By adjusting this critical parameter in real-time, the system achieves reliable accommodation-vergence alignment without requiring complete redesign of the display architecture.
3Object-affected harmful factors
If dynamic focus adjustment is implemented, then physiological symptoms are reduced, but processing requirements and system complexity increase
Solution Approach 1:
The patent converts the potentially harmful effect of accommodation-vergence misalignment into a beneficial adaptation mechanism. By tracking and responding to eye movement patterns, the system transforms what would be sources of discomfort into feedback signals that drive focus adjustments, thereby eliminating eye strain and headaches while justifying the added system complexity.
Data Source
AI summary
An augmented reality (AR) display device can display a virtual assistant character that interacts with the user of the AR device. The virtual assistant may be represented by a robot (or other) avatar that assists the user with contextual objects and suggestions depending on what virtual content the user is interacting with. Animated images may be displayed above the robot's head to display its intents to the user. For example, the robot can run up to a menu and suggest an action and show the animated images. The robot can materialize virtual objects that appear on its hands. The user can remove such an object from the robot's hands and place it in the environment. If the user does not interact with the object, the robot can dematerialize it. The robot can rotate its head to keep looking at the user and/or an object that the user has picked up.