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A Deep Tour on LED Phosphor Part II: Phosphor's Performance

A Deep Tour on LED Phosphor Part II: Phosphor's Performance

What are the characteristics of LED phosphors and their impacts on the performance of packaged LEDs? The performance of LED phosphors mainly can be divided into the powder properties, particle size distribution, and stability (aging performance), etc. Usually, luminescent performance...

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About Phosphor-converted near-infrared LED

About Phosphor-converted near-infrared LED

Near-infrared spectroscopy history and principle Infrared light is a portion between the visible and microwave regions of the electromagnetic spectrum ranging from 700 nm to 1 mm. Infrared light was discovered by a German-British astronomer named William Herschel in 1800...

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Understanding CIE1931 and CIE 1976

Understanding CIE1931 and CIE 1976

CIE 1931 The CIE 1931 were created by the International Commission on Illumination (CIE) in 1931. And this is the first time human created an explanation between distributions of wavelengths in the visible spectrum, and colors can be perceived in...

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What is human centric lighting?

What is human centric lighting?

Scientific research indicates that light is one of the main driving forces of the circadian system, whether it is natural sunlight or artificial light sources, they are all can trigger a series of physiological rhythm reactions. As we all know,...

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Color Quality Scale: The definition of CQS

Color Quality Scale: The definition of CQS

Background Generally, in order to meet the new demand of solid-state lighting (SSL) market and communicate with consumers about the color quality of lighting products, NIST (National Institute of Standards and Technology) has developed the light color quality meter, which...

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