AR Wearable Vision Correction Using Ocular Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing VST-HMD devices are inadequate for users with vision defects, as they either require wearing corrective glasses or additional hardware, leading to discomfort or increased cost, and do not dynamically correct refractive errors.
Innovation Solution
A wearable device and method that uses image sensors to generate and analyze frames, extracting features to determine refractive errors and adjust content and display features to dynamically correct vision defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user wears corrective glasses or additional hardware with the VST-HMD device, then the vision defect is corrected, but the device complexity and user discomfort increase
Solution Approach 1:
The patent extracts the vision correction function from external hardware (glasses or separate lenses) and integrates it directly into the VST-HMD device's display system. The display controller modifies the image content to compensate for refractive errors, eliminating the need for separate correction components while maintaining vision correction effectiveness
Solution Approach 2:
The display controller is designed to perform multiple functions: it both displays visual content and simultaneously corrects vision defects by adjusting image features. This multi-functionality consolidates what would otherwise require separate dedicated components, reducing overall device complexity while maintaining correction reliability
2Reliability
If the user wears corrective glasses or additional hardware with the VST-HMD device, then the vision defect is corrected, but the user comfort deteriorates
Solution Approach 1:
The patent removes the need for external corrective glasses or additional hardware attachments by extracting the correction function and embedding it within the device's software control system. This eliminates physical pressure points on the nose and ears, significantly improving user comfort while preserving vision correction capability
Solution Approach 2:
The patent replaces the mechanical approach of physical lenses and glasses with a computational approach using image processing and display control. By substituting mechanical correction elements with software-based image feature adjustment, the system eliminates physical discomfort while maintaining optical correction effectiveness
3Reliability
If additional hardware such as prescription lenses is purchased for the VST-HMD device, then the vision defect is corrected, but the cost increases
Solution Approach 1:
The patent creates a software-based copy of the optical correction function that replicates the effect of physical prescription lenses through digital image processing. Instead of requiring users to purchase expensive physical lenses, the system uses computational algorithms to simulate and achieve the same vision correction effect, dramatically reducing costs while maintaining correction reliability
Solution Approach 2:
The patent replaces expensive, permanent physical lenses with a software-based solution that can be updated and adjusted without hardware replacement. The computational correction method uses existing display hardware and processing capabilities, eliminating the need for additional costly components while providing effective vision correction
4Reliability
If manual focus adjustment is used for users with vision defects, then the projected content can be focused, but the ease of operation decreases
Solution Approach 1:
The patent implements an automated feedback system where the display controller continuously monitors and analyzes image content, then automatically adjusts display features to optimize focus for users with vision defects. This closed-loop system eliminates manual intervention by using real-time feedback from the image processing pipeline to dynamically adjust correction parameters, maintaining focus reliability while dramatically improving ease of operation
Solution Approach 2:
The system performs self-service by automatically detecting vision correction requirements and adjusting display parameters without user intervention. The display controller autonomously modifies image features based on the detected refractive error type and degree, eliminating the need for manual focus adjustment while maintaining optimal focus conditions throughout use
Data Source
AI summary
A method for controlling a wearable device configured to dynamically correct a vision defect of a user is provided. The method includes generating at least one first image frame for providing a virtual reality or an augmented reality through the wearable device, obtaining, through at least one camera of the wearable device, at least one second image frame of an ocular of the user, identifying at least one first feature from the at least one first image frame, wherein the at least one first feature comprises at least one of one or more content features or one or more display features, and one or more user gesture features, identifying at least one second feature from the at least one second image frame, wherein the at least one second feature comprises one or more ocular features of the user, based on the at least one first feature and the at least one second feature, determining a type of a refractive error of the user while the virtual reality or the augmented reality is provided, adjusting, based on the type of the refractive error, at least one of the identified content features or the identified display features, and based on the at least one of the adjusted content features or the adjusted display features, providing the virtual reality or the augmented reality.