22. June 2021
Why is a reduced proportion of blue light so important in LEDs?

Why is a reduced proportion of blue light so important in LEDs?

Almost everyone knows this situation: check your cell phone again before going to sleep. Although this daily routine – which many take for granted – can have a negative effect on sleep. Numerous studies have shown that the human body does not release enough of the sleep hormone melatonin when it is exposed to light with a high blue content from smartphones, tablets, computer monitors, televisions or lighting. This can lead to problems falling asleep, especially in the evening.

The effects of blue light on the circadian rhythm

The circadian rhythm is a biological rhythm that lasts about 24 hours. This human sleep-wake rhythm is largely controlled by the ambient light. If the eyes absorb a lot of blue artificial light in the wavelength range of ~ 440 to 490 nanometers in the evening hours, the pineal gland increases melatonin* production, which can lead to an impairment of the day-night rhythm (*melatonin is also known colloquially as the sleep hormone). This was proven in a 2011 study by the University of Strasbourg.

If this balance is disturbed, this can lead to limitations in physical and mental performance. This balance can be restored by activating night mode in smartphones and using the well.e.d.-LEDs with a low proportion of blue light in the living rooms.

Retinal damage from a high proportion of blue light in the lighting

Numerous studies have shown that regular exposure to blue light can damage the retina. AMD (age-related macular degeneration) is also linked in studies to frequent exposure to blue light. It is assumed that the macular degeneration is a consequence of chronic exposure.

well.e.d. makes the light from LEDs less harmful

A new technology made up of cleverly assembled components makes it well.e.d. possible to combine a particularly low proportion of blue light and optimal color rendering in a conventional GU10 housing. A color rendering index of CRI>98 also means a particularly high quality of light that comes close to natural light.

Fig. 1: The lower proportion of the blue light spectrum with the warm white 2700K LED from well.e.d (left) compared to a conventional 2700K LED (right) can be clearly seen.

Depending on the desired lighting mood, the well.e.d.-lamps can be used wherever halogen lamps are also used. We recommend the following areas of application for the respective lamps: