Electronic Spectacles Glare Suppression via Eye-Side Sensors
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Solution Overview
Problem
Existing electronic spectacles for glare suppression are inefficient due to insufficient sensors, non-specific reception directions, and incorrect reactions to changing light conditions, leading to impaired visual enhancement.
Innovation Solution
The development of spectacles equipped with an eye tracker, multiple sensors arranged on the eye-side of the spectacle lens, and a closed-loop control circuit that adjusts the liquid crystal cell's transmission based on real-time brightness measurements and user-specific eye sensitivity curves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sensors are placed outside the spectacles to measure incident brightness, then the device structure is simple, but the measurement precision is insufficient leading to incorrect glare suppression reactions
Solution Approach 1:
Instead of placing sensors outside the spectacles to measure incident light, the patent inverts the approach by placing sensors inside the spectacles on the eye-side of the lens. This allows direct measurement of the light actually reaching the eye, providing accurate glare detection and enabling precise suppression control that matches the user's actual visual experience.
Solution Approach 2:
The patent replaces the mechanical/exterior sensor arrangement with an interior sensor system that directly measures the optical field at the eye position. This substitution enables more accurate measurement of the actual light conditions affecting vision, leading to improved glare suppression performance.
2Device complexity
If a simple control system is used with experience-based switching, then the device complexity is low, but the reliability of glare suppression is insufficient
Solution Approach 1:
The patent implements a closed-loop feedback control system where sensors continuously measure the brightness of light reaching the eye, and the control system adjusts the liquid crystal cell transmission accordingly. This feedback mechanism ensures reliable and accurate glare suppression by continuously adapting to changing light conditions based on actual measurements rather than predetermined switching thresholds.
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 system provides precise and rapid adjustment of brightness to counteract glare, enhancing visual clarity and comfort under various lighting conditions, while also preventing dazzling from own light sources.
Implementation Method 1
The light intensity passing through a light modulator may be electrically controlled with the aid of diverse liquid crystal cells (TN, STN, Fe-LC, etc.)
Implementation Method 2
The light intensity passing through a light modulator may be electrically controlled with the aid of diverse liquid crystal cells
Implementation Method 3
at least one sensor for measuring the brightness of the visible light incident thereon
Data Source
AI summary
A system for the color coding of objects in the field of view of a plurality of spectacle wearers includes a pair of spectacles per spectacle wearer. Liquid crystal cells of at least one spectacle lens of the spectacles are so designed that a transmission of the liquid crystal cells may be switched between high and low transmission states. The system also includes one RGB light source per spectacle wearer and means for controlling or regulating the luminance times, color and intensity of the RGB light source such that the light source for a first spectacle wearer illuminates with a first color at a time of the state of high transmission of the liquid crystal cell and the light source for a second spectacle wearer illuminates at a time of high transmission of the liquid crystal cell of their spectacles with a second color different from the first.