LED Lighting Should Not Only Consider Color Temperature

Humans Factor In Lighting, also known as comfortable lighting, refers to the adjustment of light with people's work and rest, and this concept of lighting originated in Europe, to enable people to live in a comfortable lighting environment. LED is an easy-to-control light source, which can adjust the illumination according to the biological physiological cycle, but it still needs to consider the spectral distribution and color temperature conditions.

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

LED advantages and disadvantages of human lighting
And LED used in human illumination has its advantages and disadvantages, such as blue light belongs to cold white light, close to natural light, help to concentrate, can be used in students'classrooms, offices; but long exposure to blue light will also inhibit the growth of melatonin, and affect the quality of sleep, immune system, and cocoa It can cause physical changes, such as cancer.

According to scientific research, blue light can control the amount of insulin, so if long-term exposure to blue light at night, will cause insulin resistance (insulin resistance), that is, insulin is reduced, can not control blood sugar, and this phenomenon can lead to obesity, diabetes, hypertension and other diseases.

Lighting design should not only consider color temperature.
In the design of LED lighting, the spectral energy distribution and color temperature should be considered. The color temperature is based on the absolute temperature K, representing the spectral components of different light sources. The color temperature of blue light falls above 5300 K, belongs to medium and high color temperature, have bright feeling; on the contrary, red light and yellow light belong to warm color light, color temperature below 3300 K, let a person have warm, healthy and relaxing feeling, suitable for household use.

However, under the same color temperature, the spectral distribution will be different because of different viewers and other factors such as climate, environment and so on. So Deborah Burnett, a consultant at Benya Burnett Lighting Design, believes that spectral energy distribution (SED) is the key factor affecting the human eye and body.