Smart Eyewear Wavefront Aberrometer Refractive Error Correction
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Solution Overview
Problem
Current smart eyewear systems, such as augmented and virtual reality headsets, lack effective methods for correcting objective refractive errors and accommodating changes in refractive power during use, leading to user discomfort and reduced usability due to inadequate adjustment capabilities.
Innovation Solution
Integration of a working wavefront aberrometer module within smart eyewear that assesses the user's objective refraction and adjusts tunable optics in real-time to correct refractive errors, allowing for dynamic calibration across various viewing conditions and lighting scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If head-mounted devices use fixed optical systems, then device structure is simple, but user comfort deteriorates due to inability to accommodate individual refractive errors
Solution Approach 1:
The patent implements dynamic optical adjustment by incorporating tunable lenses that can change their focal length in real-time based on measured refractive errors. The optical system transitions from a fixed state to a dynamically adjustable state, allowing the device to adapt to different users and viewing conditions while maintaining a relatively simple overall structure.
Solution Approach 2:
The system changes optical parameters (focal length, lens power) based on measured refractive errors and viewing conditions. By dynamically adjusting these parameters, the device accommodates individual user needs without requiring complex mechanical adjustment mechanisms, thus improving user comfort while controlling device complexity.
2Measurement precision
If smart eyewear lacks refractive error correction, then device structure is simple, but visual acuity deteriorates for users with prescription errors
Solution Approach 1:
The system performs self-calibration by automatically measuring the user's refractive error through integrated sensors and wavefront aberrometry, then adjusting its own optical parameters accordingly. This eliminates the need for manual prescription input or complex external calibration equipment, achieving high measurement precision while controlling device complexity.
Solution Approach 2:
The patent implements a feedback loop where the system continuously measures refractive errors and visual acuity, then adjusts optical parameters in real-time. This closed-loop control ensures high measurement precision and visual correction while using relatively simple sensor and actuator components rather than complex optical systems.
3Ease of operation
If optical settings are not dynamically adjusted, then device operation is simple, but eye strain increases during extended use
Solution Approach 1:
The system performs periodic measurements of refractive error and viewing distance, then adjusts optical settings at regular intervals during use. This periodic adjustment prevents cumulative eye strain while maintaining simple operation, as the user does not need to manually intervene and the adjustments occur automatically in the background.
Solution Approach 2:
The patent implements continuous monitoring of viewing conditions and refractive errors, with optical settings being continuously optimized throughout the usage period. This continuous adjustment eliminates eye strain caused by static settings while keeping the operation simple, as the system autonomously maintains optimal parameters without user interaction.
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
This solution enhances user comfort and extends the usability of smart eyewear by providing continuous refractive error correction and dynamic adjustment, improving visual acuity and reducing eye strain through real-time assessment and adaptation of optical settings.
Implementation Method 1
a working wavefront aberrometer module that assesses the wearer-user's objective refraction
Implementation Method 2
adjusts the tunable optics within the smart eyewear to correct the wearer-user's refractive errors
Implementation Method 3
correcting the user's objective refractive error viewing through the smart eyewear system by so adjusting and updating the tunable optics
Data Source
AI summary
Open view smart eyewear is combined with a wavefront aberrometer module. The smart eyewear serves as an open view eyewear form factor and house the wavefront aberrometer module among other digital processing components and corresponding software. Alternatively, the wavefront aberrometer module is removably coupled to the smart eyewear. The wavefront aberrometer module calibrates a tunable optical element according to detected optical needs of the user. The wavefront aberrometer module automatically adjusts the wearer-user's effective visual acuity (at least refractive power) viewing through the smart eyewear. The smart eyewear apparatus can also provide clinical-quality optical measurements of wearer-users for electronic communication or transmission to an eye care professional. Alignment of open view smart eyewear, the wavefront aberrometer module, and user's eyes (line of sight) can be facilitated. Iris biometric identification can be used to associate the user-specific calibration parameters and measurements with the smart eyewear.