AR Display Tilt Angle Selection for Gaze Fixation Coverage
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Solution Overview
Problem
AR wearable devices have a limited field of view (FOV) that fails to accommodate user gaze fixations, leading to graphics being projected outside the display's FOV, thereby reducing the effectiveness of AR applications.
Innovation Solution
Collecting gaze fixation data during user tasks to generate a probability distribution of vertical viewing angles, allowing the AR display to adjust its tilt angle to maximize gaze fixations within the FOV.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the AR display uses a fixed limited field of view (FOV), then the device structure remains simple, but the display cannot accommodate user gaze fixations outside the FOV
Solution Approach 1:
The patent applies dynamics by making the display tilt angle adjustable rather than fixed. The display can dynamically change its tilt angle based on user gaze fixation patterns, allowing the FOV to adapt to different viewing conditions while maintaining a physically simple display structure.
Solution Approach 2:
The patent changes the tilt angle parameter of the display based on analyzed gaze fixation data. By adjusting this geometric parameter, the system expands the effective FOV to accommodate gaze fixations without adding complex optical components.
2Reliability
If the AR display tilts to accommodate gaze fixations, then more gaze fixations fall within the FOV, but the display cannot simultaneously accommodate all possible gaze angles
Solution Approach 1:
The system performs preliminary analysis of gaze fixation patterns to determine the optimal tilt angle before actual use. By pre-calculating the best tilt angle based on collected gaze data, the display is configured in advance to maximize gaze fixation accommodation for the specific application context.
Solution Approach 2:
The patent implements feedback by continuously monitoring gaze fixations and using this information to adjust the display tilt angle. The system analyzes actual user gaze patterns and modifies the tilt angle accordingly, creating a closed-loop system that adapts to user behavior.
3Manufacturing precision
If multiple tilt angles are tested to maximize gaze fixations within FOV, then the optimal tilt angle is found, but the process requires extensive simulation data collection
Solution Approach 1:
The patent makes the gaze fixation collection system universal by gathering gaze data across multiple applications and tasks simultaneously. This multi-functional approach allows the system to build a comprehensive database of gaze patterns that can be used for tilt angle optimization without requiring separate dedicated studies for each application.
Solution Approach 2:
The system creates a virtual model or simulation environment that replicates real-world usage conditions. By running simulations based on collected gaze data, the system can test multiple tilt angles and predict performance without requiring extensive additional physical testing, effectively copying real-world scenarios for analysis.
Data Source
AI summary
Systems, methods, and computer readable media for selecting a tilt angle of an augmented reality (AR) display of an AR wearable device. Some examples of the present disclosure capture simulation data of gaze fixations while users are performing tasks using applications resident on the AR wearable device. The tilt angle of the AR display is selected based on including more gaze fixations that are within the field of view (FOV) of the AR display than are outside the FOV of the AR display. In some examples, an AR wearable device is manufactured with a fixed vertical tilt angle for the AR display. In some examples, the AR wearable device can dynamically adjust the vertical tilt angle of the AR display based on the applications that a user of the AR wearable device is likely to use or is using.