Wearable Display Positioning via Eye Tracking for Vision Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wearable devices with displays, such as VR and AR systems, face challenges in accommodating users with vision conditions like myopia and hypermetropia, as existing solutions rely on manual adjustments or accommodating existing eye correction lenses, which can be suboptimal and uncomfortable.
Innovation Solution
A wearable device equipped with an eye tracking apparatus that uses image sensors and illumination sources to determine the user's gaze direction and automatically adjust the display or lens position to ensure clear focus, allowing for precise correction of eye conditions without the need for manual adjustments or eye correction lenses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a manual adjustment mechanism is provided to move the display closer to or farther from the user's eyes, then the display position can be adjusted for different vision conditions, but the adjustment process is time-consuming and may result in sub-optimal correction due to user error
Solution Approach 1:
The system automatically detects the user's vision conditions through eye tracking and autonomously adjusts the display position without requiring manual user input. The processor analyzes eye movement data and control signals to determine the optimal display position, enabling the system to self-correct for myopia, hypermetropia, or presbyopia conditions.
Solution Approach 2:
The system uses real-time feedback from the eye tracking apparatus to continuously monitor the user's gaze and eye movements. This feedback loop allows the processor to detect vision conditions and automatically adjust the display position to maintain optimal viewing comfort and clarity.
2Reliability
If existing eye correction lenses are accommodated inside the wearable device, then users with vision conditions can view the display clearly, but the device fit is adversely impacted and comfort issues arise
Solution Approach 1:
The system replaces the mechanical solution of physical correction lenses with an automated electronic control system. Instead of incorporating physical lenses that would affect device fit and comfort, the patent uses an eye tracking apparatus and processor to detect vision conditions and automatically adjust the display position electronically, thereby maintaining device comfort while achieving vision correction.
3Adaptability or versatility
If the display position is manually adjusted by the user, then vision correction can be attempted, but user error leads to sub-optimal correction
Solution Approach 1:
The system performs self-diagnosis of the user's vision conditions through automated eye tracking and self-correction by autonomously adjusting the display position. This eliminates user error in determining the appropriate correction, as the processor objectively analyzes eye movement patterns and calculates the optimal display position based on detected conditions such as myopia, hypermetropia, or presbyopia.
Solution Approach 2:
The patent replaces manual mechanical adjustment with automated electronic control. The eye tracking apparatus and processor substitute for user manual adjustment, providing precise and accurate vision correction by objectively measuring eye movements and automatically positioning the display at the optimal location without user intervention or error.
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 solution enables automatic and precise correction of display positioning to accommodate users' vision conditions, enhancing the comfort and effectiveness of wearable devices by ensuring clear focus without user error or fit issues.
Implementation Method 1
an illuminator configured to illuminate the eye of a user wearing the wearable device
Implementation Method 2
an image sensor configured to detect light reflected by the eye
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A wearable device (100) is disclosed. The wearable device (100) may include a display (110), a lens (120), an illuminator (130), an image sensor (140), and at least one processor (150). The display (110) may be configured to present images. The lens (120) may be configured to provide a view of the display (110) to an eye (101) of a user. The illuminator (130) may be configured to illuminate the eye (101). The image sensor (140) may be configured to detect illumination reflected by the eye (101). The at least one processor (150) may be configured to cause the display (110) to present an image, receive data from the image sensor (140), determine a gaze direction of the eye (101) based at least in part on the data from the image sensor (140), and cause at least one of the display (110) or the lens (120) to be moved until the gaze direction is directed toward the image.