Programmable Lens Control for Comfortable Adaptive Eyewear
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Solution Overview
Problem
Existing optical devices for adjusting optical power in real time are complex, expensive, heavy, and cause discomfort due to rapid changes in optical power, leading to visual disturbances and increased power consumption.
Innovation Solution
An optical device with an active programmable lens, vision sensor, and optical power controller that adjusts optical power in small increments based on measured vision data, using predetermined optical power states and a processor to minimize power consumption and discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If real-time optical power adjustment is implemented using active lenses and gaze-direction sensors, then the optical device adapts to wearer's needs, but the device becomes complex and expensive
Solution Approach 1:
The patent segments the continuous optical power adjustment into discrete predetermined optical power states. The memory stores multiple discrete optical power values, and the processor selects from these predefined states rather than allowing continuous adjustment. This segmentation simplifies the control system and reduces computational requirements while maintaining adaptability to different viewing conditions.
Solution Approach 2:
The patent applies partial action by implementing optical power adjustment only when vision data indicates a change in viewing conditions that exceeds a threshold. The system does not continuously adjust optical power, but rather adjusts partially when necessary based on measured vision parameters such as gaze direction or accommodation state, reducing system complexity while maintaining necessary adaptability.
2Speed
If continuous optical power adjustment is implemented, then the optical device responds quickly to wearer's needs, but the wearer experiences visual discomfort due to dynamic changes
Solution Approach 1:
The patent implements partial action by adjusting optical power only when vision data changes exceed a predetermined threshold. The system compares current vision measurements with previous measurements and only triggers optical power adjustment when the difference is significant enough to warrant change. This prevents minor fluctuations from causing continuous adjustments that would lead to visual discomfort.
Solution Approach 2:
The patent stores predetermined optical power states in advance in memory, prepared for different viewing conditions. When vision data indicates a need for adjustment, the system selects from these pre-prepared states rather than calculating new optical power values in real-time. This preliminary preparation allows for smooth transitions and prevents abrupt changes that would cause visual discomfort.
3Use of energy by moving object
If high-power batteries are used to supply active lenses and sensors, then the device has sufficient power, but the battery becomes heavy and large
Solution Approach 1:
The patent segments the power consumption pattern by implementing discrete optical power states and threshold-based adjustment triggers. Instead of continuous power consumption for real-time adjustment, the system consumes power only when vision data changes exceed thresholds. This segmentation of power usage allows for smaller, lighter batteries while maintaining sufficient power supply for necessary adjustments.
Solution Approach 2:
The patent applies partial action to power consumption by activating optical power adjustment only when necessary, based on vision data thresholds. The system does not continuously consume power for adjustment, but rather activates adjustment partially when viewing conditions change significantly. This reduces overall power consumption, allowing for lighter and smaller battery components.
4Measurement precision
If high adjustment resolution is used, then the optical power adjustment is precise, but the device consumes more power and becomes more complex
Solution Approach 1:
The patent segments the optical power adjustment range into discrete predetermined states stored in memory. Each state represents a specific optical power value, and the system transitions between these segmented states based on vision data. This segmentation provides sufficient precision for practical applications while simplifying the control system, as the processor only needs to select from predefined states rather than calculate continuous values.
Solution Approach 2:
The patent changes the parameter representation of optical power from continuous to discrete values. By storing optical power states as discrete parameters in memory rather than allowing continuous variation, the system achieves adequate precision for vision correction while significantly reducing computational complexity and power consumption requirements.
Data Source
AI summary
An optical device including an active programmable lens having an adjustable optical power depending on a prescription of a wearer and being relative to a vision distance and/or direction of an eye of the wearer, a vision sensor adapted to measure vision data relating to the vision distance and/or direction of the eye, and an optical power controller that includes a memory storing computer executable instructions and adapted to store measured vision data and two predetermined optical power states corresponding to an optical power relative to a range of vision distance and/or direction of the eye, and a processor for executing the stored computer executable instructions, which include instructions for adjusting the adjustable optical power between the predetermined optical power states with a resolution smaller than or equal to 0.25D when the vision data passes from one range of vision distance and/or direction to another.