Implantable Eyeball Orientation Sensor Using Acceleration Field
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Solution Overview
Problem
Existing artificial accommodation systems, particularly those using magnetic field measurements, face challenges in accurately determining the need for accommodation due to interference, positioning issues, and limitations in detecting vergence angles, especially in certain geographical locations and orientations.
Innovation Solution
An implantable system that measures the orientation of the eyeball based on the external acceleration field, using a combination of acceleration and magnetic field sensors to determine the vergence angle and generate control signals for an adjustable optical system, thereby restoring the ability to accommodate across various distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If magnetic field sensors are used to determine eyeball orientation, then the system can detect vergence angle, but the measurement precision deteriorates due to interference and positioning issues in certain geographical locations
Solution Approach 1:
The patent introduces acceleration sensors as an intermediary measurement method to replace direct magnetic field sensing. The acceleration sensors measure eyeball orientation through detection of gravitational field changes during eye movement, serving as a mediator that avoids the interference problems of magnetic field sensors while still enabling vergence angle determination through computational processing of acceleration data
Solution Approach 2:
The patent changes the measurement parameter from magnetic field strength to acceleration field orientation. By measuring changes in the acceleration field rather than magnetic field, the system achieves more stable and interference-free measurements of eyeball orientation, as acceleration measurements are not affected by geographical location or electromagnetic interference
2Adaptability or versatility
If magnetic field sensors are positioned to measure horizontal vergence angle, then the system works in most locations, but the measurement becomes unreliable in certain geographical locations and orientations
Solution Approach 1:
The patent uses acceleration sensors as an intermediary that measures eye movement through gravitational field interaction rather than magnetic field interaction. This intermediary approach provides consistent measurements across all geographical locations and orientations, eliminating the reliability problems associated with magnetic field-based systems in certain locations
Solution Approach 2:
The acceleration sensor system provides universal functionality across all geographical locations and orientations. The same sensor configuration and measurement principle work reliably whether the device is used in horizontal, vertical, or intermediate orientations, and in any geographical location, making the system universally applicable without location-specific limitations
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 effectively determines the need for accommodation by reducing susceptibility to interference and optimizing sensor placement, allowing for accurate refractive power adjustments in the dioptric apparatus, enhancing the system's functionality and usability in various environments.
Implementation Method 1
a means for detecting the eyeball orientation of both eyeballs on the basis of the measurement of the external acceleration field in both eyes
Data Source
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AI summary
The invention relates to an implantable system for determining accommodation need in an artificial accommodation system by means of measuring eyeball orientation comprising a) at least one optical system (3), b) at least one information recording system (8) having means for recording the eyeball orientation of both eyeballs as an autologous control signal for the accommodation need, c) at least one information processing system (9) for generating an actuating signal for the optical system (3) from the recorded autologous control signals d) at least one power supply system (10) and e) at least one fastening system, wherein there are transmission means for the mutual exchange of information between the means for recording the eyeball orientation of the respective eyeballs, characterized in that the system has in each eye a means for recording the eyeball orientation of the respective eyeball on the basis of measurement of the external acceleration field, wherein the means for recording the eyeball orientation are permanently connected to the respectively related eyeball or integrated therein.