LED Color Desaturation via Compensated Mixing
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Solution Overview
Problem
Conventional lighting systems and color mixing processes face challenges in maintaining consistent light intensity, producing high-quality white light, and accurately desaturating colors, leading to uneven color reproduction across different cameras and lighting conditions.
Innovation Solution
The systems and processes involve compensated color mixing, where the intensity of the base color is gradually adjusted while increasing the intensity of the secondary color, allowing for precise control of mixed colors and white light production, while also calibrating camera settings to achieve accurate color representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional color mixing processes are used to desaturate colors, then color saturation can be adjusted, but light intensity becomes inconsistent and uneven color reproduction occurs
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the intensity ratios of primary color light sources (red, green, blue) and white light sources based on desired saturation levels. The control system modifies these parameters in real-time to maintain consistent total light intensity while achieving varying degrees of color saturation, thereby resolving the contradiction between color reproduction accuracy and light intensity consistency.
Solution Approach 2:
The patent implements feedback control by continuously monitoring the output light characteristics and adjusting the intensity of individual color channels accordingly. The system uses feedback signals to compensate for intensity variations that occur during color mixing and desaturation processes, ensuring uniform color reproduction across different saturation levels while maintaining stable overall light intensity.
2Illumination intensity
If multiple light sources are mixed to produce white light, then white light quality can be improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the white light production into separate controllable components - primary color light sources (red, green, blue LEDs) and white light sources. Each component can be independently controlled and adjusted to achieve desired white light quality. This segmentation allows for precise control over the spectral composition of white light while managing system complexity through modular design and independent control channels.
3Manufacturing precision
If camera calibration is performed to achieve accurate color representation, then color accuracy improves, but time and complexity of setup increases
Solution Approach 1:
The patent applies preliminary action by pre-calibrating the lighting system to match standard color temperatures (e.g., 3200K tungsten, 5600K daylight). The system includes pre-configured profiles for different lighting conditions that can be quickly selected and applied. This preliminary setup reduces on-site calibration time while maintaining color representation accuracy, as the system has already been optimized for common shooting scenarios during manufacturing.
Data Source
AI summary
Systems and methods for compensating, controlling, mixing and saturating/desaturating colors produced by or emitted from LED artificial light sources through use of multiple channel, LED controllers to control the proportion of constituent colors each to the other, to control the intensity level of the total light output of the mixed, desaturated light during and after color mixing and/or saturation/desaturation by simultaneously increasing and decreasing power to the constituent color LEDs at the same rate, and once a desired color has been produced, changing the intensity/brightness and/or degree of saturation of the produced color without changing the hue of the produced color.