Artificial Iris Control Using User-Specific Light Thresholds
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Solution Overview
Problem
Existing artificial irises lack user-specific control mechanisms to adapt light transmission based on individual light sensitivity and visual acuity needs, leading to suboptimal visual performance in varying lighting conditions.
Innovation Solution
A method for controlling an artificial iris that includes receiving light intensity measurements, accessing user-specific profiles with thresholds, and adjusting concentric liquid crystal rings to control light transmittance, utilizing a processing unit to switch rings between opaque and transparent states based on user-specific profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed light transmittance control mechanism is used in the artificial iris, then the device complexity is reduced, but the adaptability to different user needs and lighting conditions deteriorates
Solution Approach 1:
The patent implements dynamic control of the artificial iris by switching between multiple aperture configurations (e.g., fully open, partially closed, fully closed) based on real-time light intensity measurements and user-specific profiles. This allows the system to adapt to varying lighting conditions and individual user needs without requiring a completely complex continuous adjustment mechanism.
Solution Approach 2:
The system changes discrete parameters (aperture state configurations) rather than continuously adjusting the iris opening. By defining specific aperture states and switching between them based on threshold comparisons, the patent achieves adaptability while maintaining relatively simple control logic and device architecture.
2Reliability
If user-specific profiles with multiple thresholds are implemented, then the visual performance and contrast sensitivity are improved, but the device complexity and processing requirements increase
Solution Approach 1:
The control mechanism is segmented into discrete threshold-based decision points. Instead of requiring complex continuous processing, the system divides the light intensity range into segments defined by user-specific thresholds, with each segment corresponding to a specific aperture state. This segmentation simplifies the processing logic while maintaining high visual performance.
Solution Approach 2:
The system incorporates user calibration during manufacturing to pre-determine optimal thresholds and aperture configurations for each user. This self-service approach during calibration eliminates the need for complex real-time learning or adjustment mechanisms, reducing ongoing processing requirements while maintaining personalized visual performance.
3Manufacturing precision
If multiple concentric rings of liquid crystals are used for precise light control, then the precision of light transmission control is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The artificial iris is segmented into multiple concentric rings of liquid crystals, where each ring can be independently controlled to achieve precise aperture adjustments. By dividing the control function across discrete rings rather than using a single complex continuous mechanism, the patent achieves manufacturing precision while simplifying the manufacturing process for each individual ring component.
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 provides a user-specific, adaptive control of light transmission, enhancing visual acuity and contrast sensitivity by aligning light transmittance with individual user needs, and supporting different activities and lighting conditions.
Implementation Method 1
one or more concentric rings of liquid crystals of the artificial iris for controlling an amount of light transmitted through the artificial iris
Data Source
AI summary
A method for controlling an artificial iris comprises: receiving a measurement of light intensity detected by a sensor on or adjacent to the artificial iris; accessing a user-specific profile based on user calibration for determining one or more user-specific thresholds of light intensity of the user-specific profile, wherein the one or more user-specific thresholds are associated with light intensities for triggering a change of light transmittance through the artificial iris; comparing the received measurement of light intensity to the one or more thresholds in the user-specific profile; and determining, based on the comparing, whether to turn on or turn off one or more concentric rings of liquid crystals of the artificial iris for controlling an amount of light transmitted through the artificial iris.