Illumination Device Ambient Light Interference Correction
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Solution Overview
Problem
Existing illuminating devices face challenges in accurately determining the true color of an object due to interference from other objects or devices in the environment, leading to deviations in the color of reflected light and difficulties in selecting coordinated irradiating light.
Innovation Solution
The method involves projecting initial detection light onto the object, acquiring initial reflected light, switching off the light to detect environment color, correcting the initial color based on environment color conditions, and adjusting detection light to minimize interference, thereby obtaining a more precise corrected color for selecting appropriate irradiating light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the illuminating device continuously projects detection light to acquire reflected light for color determination, then the color detection process is continuous and responsive, but ambient light from other objects interferes with the reflected light measurement, causing color deviation
Solution Approach 1:
The illuminating device periodically switches between projection state (emitting detection light) and non-projection state (not emitting detection light). During the non-projection state, the color sensor measures only ambient light. By comparing measurements from both states, the system eliminates ambient light interference and accurately determines the object's reflected light color.
Solution Approach 2:
The patent converts the harmful ambient light interference into a useful measurement component. By measuring ambient light during non-projection state and reflected light during projection state, the system uses the previously harmful ambient light as a reference to calculate and remove its contribution, thereby isolating the pure reflected light color information.
2Adaptability or versatility
If the illuminating device uses adaptive color adjustment based on reflected light, then the illumination is enhanced to match object color, but the presence of other reflective objects in the environment causes color determination deviation
Solution Approach 1:
The system continuously monitors the color of reflected light using a color sensor and feeds this information back to the control unit. The control unit processes the color data, determines the object's color characteristics, and adjusts the illumination light's color temperature and intensity accordingly. This closed-loop feedback ensures adaptive illumination that accurately matches the illuminated object's color.
Solution Approach 2:
The system periodically alternates between emitting detection light for reflected light measurement and not emitting detection light for ambient light measurement. This periodic action enables the system to distinguish and separate ambient light from reflected light, ensuring accurate color determination for adaptive illumination adjustment.
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
This approach reduces ambient light interference, allowing for a more accurate determination of the object's true color, enabling the illuminating device to select irradiating light that is coordinated with the object's true color.
Implementation Method 1
detecting initial reflected light of the illuminated object
Data Source
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AI summary
Embodiments of the present invention disclose an illuminating device, a control method thereof and a control system thereof, which can precisely acquire the color of an illuminated object and adjust irradiating light emitted by the illuminating device according to the color of the object. The color of initial reflected light of the illuminated object can be corrected by acquiring the environment color, the interference of ambient light on reflected light of the illuminated object is reduced, and more precisely corrected color closer to the true color of the illuminated object is obtained, so that the illuminating device can select irradiating light coordinated with the true color of the illuminated object.