LED Lighting Apparatus with Dynamic Subset Driver for Color Temperature Control
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Solution Overview
Problem
Existing lighting apparatuses struggle to provide flexible and cost-effective control over color temperature to mimic natural environment lighting, often requiring complex designs that compromise on accuracy and cost-effectiveness.
Innovation Solution
A lighting apparatus comprising multiple LED modules with different color temperatures, controlled by a driver that selectively activates subsets of LED modules to generate a desired mixed color temperature, while maintaining a color tolerance adjustment of less than 7 steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple LED modules with different color temperatures are used to achieve flexible color temperature control, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic control of LED modules by selectively activating different subsets of LED modules based on desired color temperature. The driver circuit dynamically adjusts which LED modules are active, enabling flexible color temperature control without requiring a completely different system design for each temperature level.
Solution Approach 2:
The patent changes the operational parameters of the lighting system by varying the combination and intensity of different LED modules. By adjusting which LED modules are activated and their respective drive currents, the system achieves different color temperatures through parameter variation rather than physical reconfiguration.
2Manufacturing precision
If selective activation of LED module subsets is implemented to achieve accurate mixed color temperature, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the LED lighting system into multiple independent LED modules, each with specific color temperature characteristics. The driver circuit segments the control by selectively activating different subsets of these modules, enabling precise control over the mixed color temperature through modular management rather than controlling a single large array.
Solution Approach 2:
The driver circuit is designed with universal control capability to manage multiple LED modules with different color temperatures. A single driver system can produce various color temperatures by adjusting which modules are active, making the system multi-functional without requiring separate control circuits for each color temperature level.
3Adaptability or versatility
If multiple subsets of LED modules are controlled to generate different color temperatures, then adaptability is improved, but loss of information increases
Solution Approach 1:
The patent implements feedback mechanisms to monitor and adjust the actual color temperature output. By measuring the combined light output from activated LED modules and comparing it to the target color temperature, the system can make real-time adjustments to maintain precision despite the complexity of controlling multiple module subsets.
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 enables flexible and accurate control over mixed color temperatures, achieving a target color temperature between 2580K and 6020K with a high degree of precision and cost-effectiveness, effectively mimicking natural environment lighting.
Implementation Method 1
The first light source has multiple first LED modules. The second light source has multiple second LED modules. The driver controls the first light source and the second light source to generate an output light of a required mixed color temperature.
Implementation Method 2
LED lighting, a solid-state lamp that uses light-emitting diodes as the source of light, is a solution when it comes to energy-efficient lighting.
Data Source
AI summary
A lighting apparatus includes a first light source, a second light source and a driver. The first light source has multiple first LED modules. The second light source has multiple second LED modules. The driver controls the first light source and the second light source to generate an output light of a required mixed color temperature. The driver selects a first subset of the multiple first LED modules and a second subset of the multiple second LED modules to generate a first output light with a first color temperature. The driver selects a third subset of the multiple first LED modules and a fourth subset of the multiple second LED modules to generate a second output light with a second color temperature. The first subset is not equal to the third subset. The second subset is not equal to the fourth subset.