Single Switch Control for Electronically Switchable Optical Devices
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Solution Overview
Problem
Existing electronically controllable optical devices either require manual control or automatic control, but not both, and often rely on multiple switches which are cumbersome, bulky, and prone to operator error, especially in applications where space is limited and quick responses are necessary.
Innovation Solution
An electronically controllable optical device with a single switch that can be actuated in various sequences to perform multiple functions, including state changes, mode switching, threshold adjustments, and color changes, using a combination of liquid crystal materials, a photosensor, and a control circuit to enable 'blind' operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple switches are provided on the optical device to achieve multiple functions, then the device can provide comprehensive control capabilities, but the device becomes bulky, heavy, and complex
Solution Approach 1:
A single switch is designed to perform multiple functions including manual state control, mode switching between manual and automatic operation, and threshold adjustment for the photosensor. The control circuit intelligently interprets different switch actuation patterns to execute different functions, eliminating the need for multiple dedicated switches while maintaining comprehensive control capabilities
Solution Approach 2:
Multiple control functions that would traditionally require separate switches are merged into a single switch interface. The control circuit combines manual control, automatic mode selection, and threshold adjustment functions into one unified control mechanism, reducing the physical number of components while preserving all necessary control functionalities
2Adaptability or versatility
If multiple switches are provided on the optical device, then all functions can be controlled, but operator error increases and ease of operation decreases
Solution Approach 1:
The control circuit incorporates feedback mechanisms that monitor switch actuation patterns and the current operational state of the device. This feedback allows the system to intelligently determine which function should be executed based on the sequence and context of switch presses, providing intuitive control that reduces operator error while maintaining access to multiple functions
3Adaptability or versatility
If multiple switches are provided on the optical device, then all functions can be controlled, but the device size increases which is problematic for eyewear applications
Solution Approach 1:
A single switch is designed to perform multiple functions including manual state control, mode switching between manual and automatic operation, and threshold adjustment for the photosensor. The control circuit intelligently interprets different switch actuation patterns to execute different functions, eliminating the need for multiple dedicated switches while maintaining comprehensive control capabilities
Solution Approach 2:
Multiple control functions that would traditionally require separate switches are merged into a single switch interface. The control circuit combines manual control, automatic mode selection, and threshold adjustment functions into one unified control mechanism, reducing the physical number of components while preserving all necessary control functionalities
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 allows for intuitive, multi-functional control of optical devices like eyewear with a single switch, reducing bulk and weight, minimizing operator error, and enabling efficient operation in environments with limited space and time constraints.
Implementation Method 1
a cell comprising at least one liquid crystal material capable of changing from a clear state of highest light transmittance when no voltage is applied to a tinted state of lower light transmittance upon application of a voltage
Implementation Method 2
a photosensor associated with the cell, said photosensor generating an input signal based on ambient light level
Data Source
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AI summary
An electronically controllable optical device is provided which includes a cell maintaining an electro-optically controllable material, a photosensor associated with the cell, wherein the photosensor generates an input signal based on ambient light level, and a control circuit which receives the input signal and generates at least one output signal received by the cell. The device also includes a single switch connected to the control circuit, wherein actuation of the switch in predetermined sequences enables at least two of the following features of the device, a state change of the material, a system change between auto and manual modes, or a threshold value change for generation of the ambient light input signal, a device color change, a device tint change or a reset of the threshold value to the original factory setting. Methods of operation for the device are also provided. A control apparatus for the device is also disclosed.