Full Spectrum LED Lighting Panel Video Signal Control
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Solution Overview
Problem
Conventional lighting systems using RGB LEDs are deficient in producing a broad spectrum white light, which is essential for accurate rendering of skin tones and other colors, and are limited in their ability to synchronize with video signals for dynamic effects.
Innovation Solution
A lighting apparatus utilizing a greater than three LED system, including Red, Green, Blue, Cool White, and Warm White LEDs, synchronized with a video signal to produce a fuller white light spectrum, using a 3DLut to map RGB video signals to the additional LEDs for enhanced color rendering and shadow effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If RGB LEDs are used for lighting, then the system can be controlled through video signal, but the white light spectrum is narrow and color rendering is poor
Solution Approach 1:
The patent combines RGB LEDs with additional white light LEDs (cool white and warm white) in each pixel module. This merging of different light sources enables the system to maintain video signal control while producing a broader white light spectrum that includes both the narrowband RGB components and the broadband white light components, thereby improving color rendering.
Solution Approach 2:
The lighting system uses a composite approach by integrating multiple types of LED light sources (RGB LEDs and white light LEDs) within each pixel. This composite structure allows the system to leverage the color control capabilities of RGB LEDs while simultaneously incorporating the broad spectrum characteristics of white light LEDs, achieving both video signal controllability and superior color rendering.
2Device complexity
If conventional RGB LED system is used, then the structure is simple, but the color rendering of skin tones and objects is inaccurate
Solution Approach 1:
The patent merges RGB LEDs with additional white light LEDs (cool white and warm white) in each pixel module. This combination enables the system to maintain relatively simple structure while producing a broader white light spectrum that includes both the narrowband RGB components and the broadband white light components, thereby improving color rendering accuracy for skin tones and objects.
3Ease of operation
If RGB LEDs are used, then the lighting apparatus can be controlled by DMX signal, but it cannot reproduce video image with synchronized effects
Solution Approach 1:
The patent designs the lighting apparatus to serve multiple functions: it can operate with traditional DMX control signals for conventional lighting applications, and simultaneously function as a video display device that reproduces video images with synchronized color and shadow effects. The pixel structure with RGB and white light LEDs enables this multi-functionality by providing both precise color control and broad spectrum output.
4Illumination intensity
If additional white light LEDs are added to each pixel, then the white light spectrum becomes broader, but the device complexity increases
Solution Approach 1:
The patent merges multiple types of LEDs (RGB and white light LEDs) into integrated pixel modules that can be controlled through a unified video signal. This merging approach manages the increased complexity by providing a standardized modular structure where the additional white light LEDs are systematically incorporated rather than added as separate independent systems.
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 solution provides higher quality white light and synchronized color and shadow effects, enabling better rendering of real-world colors and environments, and allows for simulation of complex light patterns in real-time with the video image.
Implementation Method 1
Each pixel element comprises a Red LED, a Green LED, a Blue LED, a Cool White LED and a Warm White LED
Data Source
AI summary
A system for creating a broad spectrum lighting apparatus for illuminating a subject. The system includes a lighting panel formed by an array of colored light emitting diodes (LEDs) representing pixels corresponding to red pixels, green pixels, blue pixels, and pixels corresponding to at least color other than red, green or blue. A control interface converts a video signal consisting of red, green, blue (RGB) data into a full spectrum light display including all of the LEDS to create a higher quality white than would have been possible with only RGB LEDs.