Voltage Control Apparatus for Electro-Optic Element Uniformity
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Solution Overview
Problem
Existing electro-optic devices face challenges in maintaining uniform voltage distribution across multiple zones, leading to inconsistent transmittance and potential damage from excessive supply voltages, especially as the surface area increases and temperature fluctuations occur.
Innovation Solution
A multi-zone control system comprising voltage control devices, such as transistors, and a control circuit that adjusts activation voltages based on feedback signals to maintain a constant voltage difference across the electro-optic medium, preventing damage and ensuring uniform transmittance by distributing voltage control devices evenly across the electro-optic element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single voltage control device is used for the entire electro-optic element, then the device complexity is low, but the transmittance uniformity across different zones deteriorates
Solution Approach 1:
The electro-optic element is divided into multiple independent zones, each with its own voltage control device. This segmentation allows independent control of voltage in each zone, ensuring uniform transmittance across the entire element while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
Each zone is equipped with localized voltage control devices that can independently adjust voltage parameters. This local quality approach enables precise control of transmittance in each specific zone, addressing the uniformity issue without requiring complex centralized control systems.
2Area of stationary object
If the surface area of the electro-optic element is increased to improve functionality, then the coverage area is improved, but the voltage distribution uniformity deteriorates due to excessive supply voltages
Solution Approach 1:
Large-scale electro-optic elements are divided into multiple smaller zones, each managed by its own voltage control device. This segmentation prevents excessive voltage accumulation across the entire large area while maintaining uniform voltage distribution locally in each zone, thus preserving transmittance uniformity despite increased overall area.
Solution Approach 2:
The voltage control approach transitions from a single centralized control point to a distributed two-dimensional array of control devices across the electro-optic element surface. This dimensional change enables effective voltage management across large areas by providing localized control at multiple spatial points.
3Productivity
If the supply voltage is increased to activate the electro-optic medium, then the activation efficiency is improved, but the risk of damage to the electro-optic medium increases
Solution Approach 1:
The total required voltage is distributed across multiple series-connected zones rather than applied as a single high voltage. Each zone receives a moderate voltage from its own control device, achieving the necessary activation efficiency while preventing damage from excessive voltage in any single location.
Solution Approach 2:
Voltage control devices serve as intermediary components between the power supply and the electro-optic medium. These intermediaries regulate and limit the voltage reaching the electro-optic medium, ensuring sufficient activation while protecting against damaging voltage levels through controlled voltage delivery.
4Manufacturing precision
If multiple voltage control devices are distributed across the electro-optic element to improve transmittance uniformity, then the transmittance uniformity is improved, but the device complexity increases
Solution Approach 1:
The system uses multiple simple, identical voltage control devices distributed across zones rather than one complex centralized controller. This segmentation into identical modular units achieves transmittance uniformity through distributed control while keeping individual device complexity low and enabling standardized manufacturing.
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 effectively maintains consistent and uniform transmittance across the electro-optic element by regulating activation voltages, preventing damage from excessive supply voltages and addressing scalability and temperature-related issues, ensuring accurate and consistent light transmission.
Implementation Method 1
an electro-optic medium... operable to receive a supply voltage and to output an activation voltage to the electro-optic medium
Data Source
AI summary
An electro-optic element is disclosed. The electro-optic element may comprise a voltage control device electrically connected to an electrode of the electro-optic medium. In some embodiments, the voltage control device may be a transistor. The voltage control device may be operable to receive a supply voltage and to output an activation voltage to an electro-optic medium of the electro-optic element. Additionally, the electro-optic element may further comprise a control circuit. The control circuit may be configured to receive at least one feedback signal. Based, at least in part, on the feedback signals, the control circuit may accordingly control the activation voltage output by the voltage control devices.