Illumination Device Liquid Crystal Light Distribution Control
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Solution Overview
Problem
Conventional illumination devices face challenges in accurately adjusting the irradiation area of light due to discrepancies between user-controlled settings and actual light distribution, making it difficult to set the intended light irradiation area.
Innovation Solution
An illumination device and control system that includes a light source, a light adjustment device using liquid crystal cells for controlling light distribution angles, and a controller with storage for correspondence information to generate and apply control data based on user input, allowing precise adjustment of light distribution angles via a touch-sensitive control device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a liquid crystal cell is used to control light distribution angle, then the irradiation area can be adjusted remotely, but the discrepancy between controlled values and actual irradiation area makes it difficult to set the intended light irradiation area
Solution Approach 1:
The patent introduces a feedback mechanism where the controller stores correspondence information between control values and actual light distribution angles. The data generator uses this stored information to calculate corrected control values that compensate for discrepancies, ensuring accurate irradiation area settings while maintaining remote operation capability
Solution Approach 2:
The patent changes the parameter mapping by storing correspondence information that relates control device values to actual light distribution angles. This parameter transformation allows the system to translate user inputs into accurate control commands, resolving the discrepancy between intended and actual irradiation areas
2Adaptability or versatility
If the distance between light source and thin lens is changed to change light distribution angle, then light distribution can be adjusted, but the adjustment precision and ease of operation are reduced
Solution Approach 1:
The patent replaces mechanical adjustment (changing physical distance between light source and lens) with an electrical control system using liquid crystal cells. This substitution enables precise control of light distribution angle through voltage application to the liquid crystal cell, eliminating the need for mechanical positioning while maintaining or improving adjustment precision
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
Enables accurate and intuitive adjustment of light irradiation areas by correlating user input with light distribution control data, improving the alignment between intended and actual light settings, thus enhancing user convenience and precision.
Implementation Method 1
a liquid crystal light adjustment element, and the transmittance of a liquid crystal layer is changed to switch between directly reaching light and scattering light
Data Source
AI summary
According to an aspect, an illumination device includes a light source, a light adjustment device configured to control a light distribution angle of light emitted from the light source, and a controller configured to control the light adjustment device. The controller includes a storage configured to hold correspondence information indicating a correspondence relation between first data that is input from a control device and second data that is used to control the light distribution angle, a data generator configured to generate second data by adjusting the first data based on the correspondence information, and a driver configured to drive the light adjustment device based on the second data.