Multi-LED Flashlight Component for Variable Color Temperature
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Solution Overview
Problem
Conventional optoelectronic semiconductor components for flashlights lack the ability to flexibly adjust their emission spectrum, which limits their adaptability to varying ambient light conditions, affecting image quality and white balance.
Innovation Solution
An optoelectronic semiconductor component comprising multiple light sources with distinct emission spectra, including light-emitting diode chips and phosphor mixtures, which are strategically arranged to emit radiation with color loci on common isotherms or extension straight lines in the CIE chromaticity diagram, allowing for adjustable and reproducible white light with variable correlated color temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single light source or dual LED component is used, then the device complexity is low, but the adaptability to varying ambient light conditions is limited
Solution Approach 1:
The patent divides the light source into multiple independent LED chips (first LED chip, second LED chip, third LED chip) with different emission spectra. Each LED chip can be controlled independently to emit light at different wavelengths, enabling flexible adjustment of the overall emission spectrum to match varying ambient light conditions while maintaining manageable device complexity through modular design
Solution Approach 2:
The patent creates a multi-functional light source system where the same set of LED chips can generate multiple different emission spectra by selectively activating different chips. This universal light source can adapt to various ambient light conditions (daylight, incandescent, fluorescent) without requiring separate dedicated light sources for each condition
2Adaptability or versatility
If multiple light sources with different emission spectra are used, then the adaptability and color rendering are improved, but the device complexity increases
Solution Approach 1:
The patent assigns different spectral characteristics to different LED chips (first LED chip for one spectrum, second LED chip for another spectrum, third LED chip for yet another spectrum). Each local component (LED chip) has optimized quality for its specific wavelength range, and by combining these localized spectral qualities, the system achieves broad spectral coverage and high adaptability
Solution Approach 2:
The patent implements dynamic control of the light emission by independently adjusting the intensity and activation of each LED chip based on ambient light conditions. The system can dynamically shift its emission spectrum by activating different combinations of LED chips, providing real-time adaptation to changing environmental conditions
3Manufacturing precision
If light sources with color loci on common isotherms are used, then the white balance and color rendering are improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent pre-configures the LED chips with emission spectra that correspond to color loci on common isotherms in the CIE chromaticity diagram. This preliminary design choice ensures that when the LEDs are activated in combination, they naturally produce light with desirable color rendering properties and consistent white balance, reducing the need for complex post-manufacturing adjustments
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 configuration enhances image quality and white balance by reducing reabsorption of converted radiation and enabling brightness-optimized color locus selection with low control overhead, improving color rendering and efficiency compared to single or dual LED components.
Implementation Method 1
each of the light sources of the semiconductor component has one or a plurality of optoelectronic semiconductor chips. By way of example, the semiconductor chips are light-emitting diode chips or laser diode chips
Implementation Method 2
at least one first light source, at least one second light source, at least one third light source and at least one fourth light source... include light-emitting diode chips and phosphor mixtures
Data Source
AI summary
Optoelectronic semiconductor component includes at least four different light sources each including at least one optoelectronic semiconductor chip, which during operation emit radiation having mutually different color loci in the CIE standard chromaticity diagram, wherein the semiconductor component is designed to emit white or colored light having a variable correlated color temperature during operation.