NdFxOy Optical Filter for LED Color Rendering
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Solution Overview
Problem
Current LED/OLED lighting technologies face limitations in achieving optimal color properties, particularly in white light generation, for both general illumination and display applications, due to directional light emission and limited color rendering capabilities.
Innovation Solution
Incorporation of a compound comprising neodymium (Nd) and fluorine (F) with varying oxygen (O) content (NdFxOy) to filter and enhance the visible light spectrum, improving color correlated temperature (CCT), color saturation index (CSI), color rendering index (CRI), and color rendering value (R9) through specific manufacturing processes such as wet chemical or dry processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional LED devices are used to generate visible light, then energy efficiency and longevity are improved, but color rendering capabilities and color properties remain limited
Solution Approach 1:
The patent applies parameter changes by systematically varying the composition ratios of neodymium, fluorine, and oxygen in the NdFxOy compound, as well as adjusting manufacturing parameters such as fluoridation temperature and reaction time. These parameter modifications enable precise control over the compound's optical properties, allowing optimization of both energy efficiency and color rendering capabilities simultaneously
Solution Approach 2:
The patent employs composite materials by combining neodymium compounds with fluorine and oxygen to create NdFxOy compounds with tailored optical properties. This composite approach allows the material to exhibit enhanced color filtering and emission characteristics that improve color rendering while maintaining energy efficiency, resolving the contradiction between these two parameters
2Illumination intensity
If combinations of different LED devices are used to produce white light, then color properties are improved, but device complexity increases
Solution Approach 1:
The patent extracts the color rendering function from complex multi-LED combinations and consolidates it into a single NdFxOy compound material. By taking out the color filtering capability and embedding it in one material component, the system achieves improved color properties without requiring multiple different LED devices, thereby reducing device complexity
Solution Approach 2:
The NdFxOy compound serves multiple functions simultaneously: it acts as a color filter, an emission enhancer, and a spectral modifier. This multi-functionality allows a single material to replace what would otherwise require multiple different LED devices or optical components, simplifying the overall device structure while maintaining superior color properties
3Use of energy by moving object
If blue LED with phosphor is used to generate white light, then energy efficiency is improved, but color saturation and rendering index are limited
Solution Approach 1:
The patent applies parameter changes by precisely controlling the fluorine-to-oxygen ratio (x/y) in the NdFxOy compound and adjusting manufacturing parameters such as fluoridation temperature and reaction time. These parameter modifications enable fine-tuning of the compound's absorption and emission characteristics, achieving high color saturation and improved color rendering index while maintaining the energy efficiency of blue LED with phosphor systems
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 use of NdFxOy compounds enhances light parameters by providing a desired output spectrum, improving CSI, CRI, R9, and revealness, while minimizing scattering losses due to refractive index matching, resulting in improved color rendering and lighting preferences.
Implementation Method 1
filtering the generated visible light using the NdFxOy compound
Implementation Method 2
minimizing scattering losses due to refractive index matching
Data Source
AI summary
The specification and drawings present a new apparatus such as a lighting apparatus, the apparatus comprising at least one LED (or OLED) module, configured to generate a visible light such as white light, and at least one component such as optical component comprising a compound consisting essentially of the elements neodymium (Nd) and fluorine (F), and optionally including one or more other elements. The lighting apparatus is configured to provide a desired light spectrum by filtering the generated visible light using the compound. The at least one component can comprise a NdFxOy compound with values of x and y determining a content ratio F/O, which may be adjusted during manufacturing of the NdFxOy compound to provide desired output light parameters of the apparatus including at least a desired output light spectrum realized by filtering the generated visible light using the NdFxOy compound.