LED Lamp White Colored Ratio Mixing
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Solution Overview
Problem
Existing LED lamps with both white and colored LEDs face complexity in control and design due to the need for precise intensity matching and mixing of colored light, leading to a large and complex structure.
Innovation Solution
An LED lamp design with more white LEDs than colored LEDs, where both types have the same power requirements, and an optical element for effective light mixing, allowing for simple electronic control and a compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If more colored LEDs are added to improve color rendering index, then color rendering improves, but control complexity increases
Solution Approach 1:
The patent changes the key parameter from LED intensity control to LED quantity ratio. By setting the colored LEDs to 10-30% of total LED count, the system achieves good color rendering (Ra≥80) without complex control, as the physical quantity ratio naturally provides the needed color mix rather than requiring active intensity modulation.
2Reliability
If colored LED intensity is increased to improve color rendering, then color rendering improves, but light mixing uniformity deteriorates
Solution Approach 1:
The patent changes the approach from intensity modulation to quantity proportioning. By keeping colored LEDs at 10-30% of total count with uniform spatial distribution, the system achieves homogeneous light mixing without the need for complex intensity control, as the lower intensity contribution from the minority colored LEDs naturally mixes more uniformly with white light.
3Manufacturing precision
If LED quantity is increased to improve light mixing, then light mixing improves, but structural height increases
Solution Approach 1:
The patent changes the mixing strategy from increasing total LED quantity to optimizing the colored LED proportion. By setting colored LEDs to 10-30% of total count and distributing them uniformly, adequate light mixing is achieved with fewer total LEDs, thereby reducing the required structural height while maintaining mixing uniformity.
4Length of stationary object
If more white LEDs are used to reduce structural height, then structural height reduces, but color rendering index deteriorates
Solution Approach 1:
The patent changes the composition parameter from white LED dominance to a specific white-to-colored LED ratio. By ensuring colored LEDs constitute 10-30% of the total, the system achieves Ra≥80 color rendering while keeping the overall LED array compact, as this proportion provides sufficient colored light contribution without requiring excessive total LED quantity.
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 design achieves a high color rendering index with simplified control and a reduced overall height by ensuring effective mixing of white and colored light within a small space.
Implementation Method 1
an optical element which is arranged so as to encompass the second LEDs in such a way that it optically influences a light emitted by the second LEDs
Data Source
Figure 1~3
AI summary
An LED light for generating white light has first LEDs (2) that can emit white light and second LEDs (4) that can emit colored light, wherein the first LEDs (2) and the second LEDs (4) form a light source of the LED light and the number of first LEDs (2) is greater than the number of second LEDs (4).