LED Light Source Combining Decorative Patterns with Stable Illumination
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Solution Overview
Problem
Existing LED-based light sources either provide decorative colorful lighting or constant white illumination but struggle to combine both functions effectively, particularly in maintaining a consistent white light quality with a changing color pattern.
Innovation Solution
A light source system comprising multiple LED sources of different colors, controlled by a controller to create a changing pattern of light outputs that combine at a distance to produce a steady white light illumination, while maintaining a specific lumens-per-color ratio and color rendering index within a desired range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple LED sources of different colors are used to create decorative lighting, then the decorative effect is improved, but the ability to provide consistent white light illumination deteriorates
Solution Approach 1:
The LED array is divided into multiple independently controllable groups, each group responsible for specific color channels. This segmentation allows the controller to selectively activate certain groups for decorative effects while maintaining other groups for stable white light illumination, resolving the contradiction between decorative versatility and illumination consistency.
Solution Approach 2:
The system dynamically adjusts the operation state of different LED groups based on control signals. The controller can switch between decorative mode (activating color-changing LEDs) and illumination mode (activating white light LEDs), or operate in hybrid mode where both functions coexist, thereby resolving the contradiction between decorative effect and white light consistency.
2Adaptability or versatility
If LED sources are controlled to produce changing color patterns, then the decorative functionality is improved, but the stability of color temperature and CRI deteriorates
Solution Approach 1:
The LED array is divided into multiple independently controllable groups, each group responsible for specific color channels. This segmentation allows the controller to selectively activate certain groups for decorative effects while maintaining other groups for stable white light illumination, resolving the contradiction between decorative versatility and illumination consistency.
Solution Approach 2:
The controller acts as an intermediary that manages the operation of different LED groups. It receives control signals and translates them into appropriate activation patterns for decorative LEDs versus white light LEDs, ensuring that decorative color changes do not compromise the stability of white light parameters when both functions are active simultaneously.
3Illumination intensity
If a single LED source is used for white light illumination, then the illumination function is improved, but the decorative capability deteriorates
Solution Approach 1:
The system merges multiple LED types (white light LEDs and color LEDs) into a single integrated array structure. This merging allows the light source to simultaneously provide high-quality white light illumination through dedicated white LED groups while also enabling decorative color patterns through dedicated color LED groups, resolving the contradiction between illumination performance and decorative capability.
Solution Approach 2:
The LED light source is designed as a universal system that can perform multiple functions: it can provide high-quality white light illumination, decorative color patterns, or a combination of both. The controller enables the system to adapt its function based on control signals, making a single device capable of replacing both dedicated illumination fixtures and decorative lighting.
4Ease of manufacture
If multiple LED groups are controlled independently, then the decorative effect is improved, but the system complexity increases
Solution Approach 1:
The LED array is divided into multiple independently controllable groups, each group responsible for specific color channels. This segmentation allows the controller to selectively activate certain groups for decorative effects while maintaining other groups for stable white light illumination, resolving the contradiction between decorative versatility and illumination consistency.
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 system achieves a dynamic decorative effect while ensuring consistent white light illumination with stable color temperature, CRI, and luminous output, suitable for both decorative and general illumination applications.
Implementation Method 1
A light source system comprising multiple LED sources of different colors
Implementation Method 2
converting the LED light output having a peak wavelength (the 'primary light') to light having a different peak wavelength (the 'secondary light') using luminescence/fluorescence
Implementation Method 3
The luminescent/fluorescence process involves absorbing the primary light by a wavelength-converting material such as a phosphor or mixture of phosphors thereby exciting the phosphor material, which emits the secondary light
Data Source
AI summary
A light source that generally includes multiple light emitting diode (LED) sources emitting light at different colors. A controller energizes the LED sources for establishing a changing pattern of the light colors to provide a decorative effect while simultaneously establishing white light illumination of a target area.