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LED lighting can not only consider color temperature

Sep 27, 2019

LED lighting can not only consider color temperature

Humans Factor In Lighting, also known as comfort lighting, refers to the adjustment of lighting as people work. This lighting concept originated in Europe, in order to allow people to live in a comfortable lighting environment. LEDs are easy-to-regulate light sources that can be adjusted to match the biological cycle, but still require spectral distribution and color temperature conditions.


Although illumination is not the only factor affecting the Circadian Rhythm, it is a key factor. Some scientists believe that lighting can affect people's emotions, health and energy.


LED pros and cons


The application of LED in human illumination has its advantages and disadvantages. For example, blue light belongs to cool white light and close to natural light. It helps to concentrate and can be applied to students' classrooms and offices. However, it will also inhibit blackening when exposed to blue light for a long time. The growth of melatonin affects sleep quality, the immune system, and may cause body lesions such as cancer.


According to scientific research, blue light can control the amount of insulin, so if it is exposed to blue light for a long time at night, it will cause insulin resistance, which means that insulin is lowered and blood sugar cannot be controlled, and this phenomenon can lead to obesity, diabetes, and high. Blood pressure and other diseases.


Lighting design can't just consider color temperature


In designing LED lighting, the spectral energy distribution and color temperature should be both considered. The color temperature is expressed in absolute temperature K, representing the spectral components of different light sources. The color temperature of blue light is above 5300K, which belongs to medium and high color temperature and has a bright sense. Conversely, red light and yellow light belong to warm color light, and the color temperature is below 3300K, which makes people feel warm, healthy and relaxed, suitable for home use.


However, under the same color temperature conditions, there will be different spectral distributions due to different viewers and other conditions such as climate and environment. Therefore, lighting research experts believe that the Spectral Energy Distribution (SED) is the key factor affecting the human eye and the body.