Multi-Color LED Lighting Device with Converging Lens
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Solution Overview
Problem
Existing multi-color lighting devices face challenges in achieving uniform intensity and beam width specifications due to the degradation of light quality when multiple colors are used, leading to inefficiencies and non-uniform output beams.
Innovation Solution
A multi-color lighting device design featuring a converging lens with a curved contour and a group of LED lamps positioned to direct light radially outward, accompanied by a circuit that selectively energizes each color to ensure adequate power delivery, minimizing energy waste and maintaining uniformity across different colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple colors of LED lamps are used in the array, then the lighting device can emit multiple colors of light, but the uniformity and intensity of the output beam deteriorate due to large angular gaps between LEDs of the same color
Solution Approach 1:
The patent divides the LED array into multiple independent color groups (red, green, blue, yellow, purple LEDs), with each color having its own dedicated circuit and control switch. This segmentation allows selective activation of specific color groups while maintaining proper spatial distribution within each group, thereby preserving beam uniformity while enabling multi-color functionality.
Solution Approach 2:
The patent positions LEDs of different colors at specific angular intervals around the lens, with each color group maintaining its own optimal spacing and distribution pattern. This local quality approach ensures that each color group independently satisfies the tight array requirements for uniform beam output, while the overall arrangement enables multi-color emission capability.
2Illumination intensity
If LED lamps are placed in a tight array about the center of the lens, then the light beam intensity and uniformity are improved, but the device size increases and operating temperature rises
Solution Approach 1:
The patent implements dynamic control of LED operation through individual circuit switches for each color group, allowing the system to activate only the necessary LED subsets during operation. This dynamic operation reduces the number of simultaneously active LEDs, thereby lowering heat generation and operating temperature while maintaining adequate beam intensity through selective color activation.
Solution Approach 2:
The patent allows non-active LED groups to remain in standby or off states, effectively discarding their contribution to heat generation during periods when their color is not needed. The system can recover and activate these LED groups when their color is required, maintaining beam intensity requirements while minimizing overall thermal load through temporal separation of operation.
3Adaptability or versatility
If multiple colors of LED lamps are used, then the lighting device can provide color selection, but the power consumption increases due to the need to energize multiple LED groups
Solution Approach 1:
The patent employs periodic or selective activation of different color LED groups through dedicated control switches, rather than continuous operation of all LEDs. This allows the system to consume power only when specific colors are needed, reducing overall power consumption while maintaining the capability to provide multi-color output when required.
Solution Approach 2:
The patent activates only the necessary subset of LED groups (partial action) corresponding to the desired color output, rather than energizing all LED groups simultaneously. This approach reduces power consumption by limiting active LED operation to the minimum required for the selected color, while still providing full multi-color capability when needed.
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 the production of powerful, uniform elongated light beams of multiple colors, reducing energy consumption and maintaining compliance with photometric specifications, while also minimizing operating temperature and physical size.
Implementation Method 1
a converging lens for concentrating light into an elongated light beam
Implementation Method 2
a group of LED lamps positioned within said hollow to direct emitted light radially outward
Data Source
AI summary
A multi-color lighting device 30 capable of emitting light of at least two colors. A group 9 of LED lamps comprising a variety of colors each color having a plurality of LED lamps disposed in an equiangular array. The color of the emitted light selected by a circuit having a schematic 16 and a switch 6, which selectively energizes lamps of the desired color. Each color of emitted light is refracted by a light converging lens 1 which surrounds group 9 of LED lamps and concentrates the light emitted by the energized lamps to intensify the light emitted by the lighting device toward an elongated output beam having a specification vertical beam width smaller than a specification azimuth. Switch 6 selectively energizes each plurality of lamps representing each color within the group to an established and usually substantially fixed power level. The established power level for each color is established as adequate when light emitted from the lighting device of that color meets a required photometric specification.