The Health Benefits of SunLike LEDs: Improved Visual Comfort, Sleep, and Well-being

Seoul SunLike LEDs ease eye strain and improve sleep patterns, two research studies discover

The positive health effects of the uniform spectral power distribution and natural light spectrum of the SunLike LEDs from Seoul Semiconductor have been confirmed in two independent studies, by universities from Switzerland and South Korea.

The new SunLike technology brings a major improvement to the LED spectral power distribution (SPD) which now mimics the SPD of the sun within the bounds of the human visual range. The SunLike LEDs use a three-phosphor mix and a violet emitter to achieve the SPD. Seoul has said that the LEDs can be used in a variety of applications including in human-centric lighting or lighting for health and well-being where tunable lighting can be applied to improve human well-being.

 

SunLike LED Desgin 

 

 

 

Two independent studies conducted by universities in Switzerland and South Korea have confirmed the positive health effects of the uniform spectral power distribution and natural light spectrum provided by Seoul Semiconductor’s SunLike LEDs. These findings support the notion that SunLike technology significantly improves LED spectral power distribution (SPD), making it more closely resemble the sun’s SPD within the bounds of human visual range.

Study 1: University of Basel, Switzerland

A study published by the University of Basel in Switzerland, titled “Effect of daylight LED on visual comfort, melatonin, mood, waking performance, and sleep,” found that exposure to SunLike LEDs resulted in better visual comfort, increased alertness, and more positive moods in volunteers compared to those exposed to conventional LEDs.

The university published the research in the Journal of Lighting and Research Technology.

The research, led by Professor Christian Cajochen, investigated what they referred to as LEDs with a daylight spectrum. In this study, volunteers were exposed to Seoul Semiconductor SunLike LEDs in one session and conventional white LEDs with the same correlated color temperature (CCT) in another session. Those exposed to the uniform SPD of SunLike LEDs reported improved sleep patterns, better visual comfort, and heightened daytime alertness.

Seoul SunLike LEDs ease eye strain and improve sleep patterns, two research studies suggest

 

Involving 15 young male participants, the study required the volunteers to spend 49 hours twice in a laboratory. During each session, they were exposed to light at the same CCT and intensity levels, with the only difference being the SPD of the LED-based lighting products. The researchers found that volunteers exposed to SunLike LEDs reported better visual comfort, increased vigilance, and improved moods compared to those exposed to conventional LEDs. Furthermore, quantitative data on sleep patterns revealed that “Delta EEG activity (0.75–4.5 Hz) was significantly higher after daylight-LED than conventional-LED exposure during the post-light exposure night,” indicating deeper sleep following exposure to SunLike LEDs.

Study 2: Seoul National University College of Medicine, South Korea

A similar outcome was observed in a study conducted by the Biomedical Information Laboratory at the Seoul National University College of Medicine in South Korea. Researchers examined adults using desk lamps based on Seoul Semiconductor SunLike LEDs and found that the LEDs resulted in decreased eye discomfort and improved sleep patterns.

The study involved volunteers, including graduate students, who used both standard LED desk lamps and SunLike-based lamps for three hours before bedtime. Researchers analyzed the participants’ vital signs during sleep and conducted subjective analysis via a questionnaire. The team found that volunteers using SunLike lamps fell asleep 23% faster than those using standard LED lamps. Additionally, the questionnaire revealed that those using SunLike lamps experienced a decrease in eye fatigue and improved sleep quality.

The research team at the university concluded that these effects were due to the stabilization of the autonomic nervous system rhythm, manifested by the inactivation of sympathetic nerves and activity of parasympathetic nerves brought on by SunLike-based lighting. They noted, “Light affects people’s circadian rhythm. In order to improve biorhythm, we can adjust the light according to the time zone and use a light source close to sunlight.”

The results of these two independent studies further solidify the benefits of SunLike LEDs in improving visual comfort, sleep quality, and overall well-being. As the technology continues to advance and gain widespread adoption, it is likely that more applications of SunLike LEDs will emerge, contributing to a healthier and more visually comfortable environment for all.

Easy to build SunLike LED fixtures thanks to our LED strips & modules

With our LumiFlex3098+ SunLike LED strips you will have a brilliant natural light source easy to install over long distances, perfect for cove lights, architectural or indirect lighting. With our range of LumiBar3098+ SunLike LED modules you can easily build linear lighting fixtures thanks to the plug & play connection and Zhaga format.

By using our Casambi compatible PowerControler and the strips modules, you can also easily build your own Human-centric lighting solution.

For example, you can use a simple 2700K and 6500K combination of LED modules or a more complex one of 2700K, 4000K and 6500K.

Seoul Semiconductor SunLike CRI98+ Strips

 

 

 

 

 

 

 

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