Blog - Yujileds

Full Spectrum Natural Light Affects People’s Emotions

In the Swedish capital of Stockholm in winter, whenever the sun sets at 15:00 pm, the whole city sinks into the dark and gloomy.More than half of people in this environment will become depressed and l...

Read more about the note

About Phosphor-converted near-infrared LED

1. Near-infrared spectroscopy history and principleInfrared light is a portion between the visible and microwave regions of the electromagneticspectrum ranging from 700 nm to 1 mm. Infrared light was...

Read more about the note

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 v...

Read more about the note

Understanding Luminous flux (lumen) and Illuminance (lux)

We often see luminous flux or illumination data on the packaging of light bulbs or other lamps. Maybe you know these two parameters are used to describe the brightness of light. But what are the speci...

Read more about the note

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 phy...

Read more about the note

All about the green/magenta shift

If you are a lighting technician or anyone with photography experience, you have most likely faced issues with green spikes and worked with plus/minus green gels and filters.Read on to learn about how...

Read more about the note

All about the green/magenta shift

If you are a lighting technician or anyone with photography experience, you have most likely faced issues with green spikes and worked with plus/minus green gels and filters.Read on to learn about how...

Read more about the note

How to choose a high CRI LED ribbon

Recent advances in LED technology allow for light sources with excellent color rendering qualities. In addition to the quality of light, versatility and flexibility (in both senses of the word) are al...

Read more about the note

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 Sta...

Read more about the note

Differences in Chromaticity Bin between the Energy Star and the Photographic Lighting

The feeling of the sunlight, as we know, is different from morning till night in nature. According to the position where the sun moves in the sky, the color of the sun will turn into red, orange, yell...

Read more about the note

Resource