Seoul Semiconductor’s SunLike Series Natural Spectrum LEDs Selected for WalaLight’s Healthy Circadian Rhythm LED Lighting Systems

Dec. 24, 2019

The WalaLight™ Healthy Circadian LED Lighting System empowers better circadian rhythm responses by remotely and automatically adjusting the color temperature and dimming of white light with optimal spectrum to improve wellness.

ATLANTA, GA – Seoul Semiconductor Co., Ltd. (KOSDAQ 046890), a leading global innovator of LED technology, announced that its SunLike Series natural spectrum LEDs, which implement light that closely matches the spectrum of sunlight, has been selected by WalaLight for its Healthy Circadian LED Lighting System, designed as a passive adaptive LED lighting system that delivers the appropriate spectrum of lighting through a smart Kelvin-changing technology to improve human wellness.

Combining WalaLight’s state-of-the-art automated wireless Bluetooth and wired Dali lighting control systems with Seoul Semiconductor’s SunLike natural spectrum LED technology, consumers experience light that closely matches the spectrum of natural sunlight, and can replicate sunlight’s spectral changes by remotely and automatically adjusting the Kelvin color temperature, dimming, and zone control of each light in the system over a 24-hour period to optimize the indoor environment for ideal light exposure, enabling a healthy circadian rhythm.

Multiple research studies have shown a profound effect of artificial light sources on patterns of human sleep, alertness, performance, and health. This new knowledge of these biological and behavioral effects, applied in a human centric LED lighting system, offers significant advantages and benefits for health and well-being. Utilizing the SunLike Series natural spectrum LEDs enables the WalaLight Healthy Circadian LED Lighting System to produce light that has a positive effect on human well-being, based on the results of a comprehensive sleep study conducted by Prof. Christian Cajochen and his team at the University of Basel in Switzerland. The paper, entitled: “Effect of Daylight LED on Visual Comfort, Melatonin, Mood, Waking Performance, and Sleep,” was published in the Journal of Lighting and Research Technology on March 24, 2019. The paper quotes: “We have evidence that a daylight [natural spectrum] LED solution has beneficial effects on visual comfort, daytime alertness, mood, and sleep intensity in healthy volunteers.”

As WalaLight CEO Harry Zuker explained, “We have determined the SunLike Series natural spectrum LEDs provide the optimal light output to help users see better, feel better, and function better. Used in conjunction with the WalaLight Healthy Circadian LED Lighting System and our Bluetooth and Dali lighting controls, the SunLike Series LEDs provide superior light to promote health and wellness at an affordable price for commercial lighting applications.”

Jared Davidson, Seoul Semiconductor vice-president of sales, Americas, said, “Conventional LED light sources currently being used for commercial lighting can have potentially negative effects on human eye health through prolonged exposure to excessive amounts of blue light at certain wavelengths. SunLike Series natural spectrum LEDs represent the next generation natural light LED technology that implement light that closely matches the spectrum of natural sunlight, and are an ideal solution to enhance eye health and contribute to an optimal lighting environment.”

Prolonged exposure to excessive blue light can disrupt sleep patterns and has the potential to negatively affect eyesight. Because SunLike LED technology implements light with a spectrum that closely matches natural sunlight, it provides healthy and comfortable light, improving the environment for living, reducing eye fatigue, and displaying colors and textures more accurately with CRI 97.

Seoul Semiconductor developed SunLike Series natural spectrum LEDs in collaboration with Toshiba Materials’ TRI-R spectrum technology in 2017 as the first LED light source to closely match the spectrum of natural sunlight.

About WalaLight

WalaLight is headquartered in Delray Beach, Florida with offices nationwide. The WalaLight healthy circadian rhythm LED luminaires system comes in 9 unique shapes to suit most client’s needs with wireless or hard-wired control systems. These fixtures were designed and are assembled in the US using foreign and domestic top-quality brand name components. WalaLight is a pioneer in the circadian rhythm lighting industry receiving several Best New Technology awards since 2015. The company prides itself as the commercial ready to ship, simple to install, simple to use and simple to maintain luminaire manufacturer reasonably priced for use in senior living facilities, schools, offices, call centers, labs, operations centers, medical facilities and others. The WalaLight control system uses the most recent Bluetooth secure technology with the free WalaLight app for automated scheduling and control or manual controls of one or many luminaires using a proprietary wall mounted control system. A hard-wired Dali based control system is also available. For more information, please visit

About Seoul Semiconductor

Seoul Semiconductor develops and commercializes LEDs for automotive, general illumination, specialty lighting, and backlighting markets. As the second-largest LED manufacturer globally excluding the captive market, Seoul Semiconductor holds more than 14,000 patents, offers a wide range of technologies, and mass produces innovative LED products such as SunLike – delivering the world’s best light quality in a next-generation LED enabling human-centric lighting optimized for circadian rhythms; WICOP – a simpler structured package-free LED which provides market leading color uniformity and cost savings at the fixture level, providing high lumen density and design flexibility; NanoDriver Series – the world’s smallest 24W DC LED drivers; Acrich, the world's first high-voltage AC-driven LED technology developed in 2005, including all AC LED-related technologies from chip to module and circuit fabrication, and nPola, a new LED product based on GaN-substrate technology that achieves more than ten times the output of conventional LEDs. UCD constitutes a high color gamut display which delivers more than 90% NTSC. For more information, please visit


Harry Zuker

Tel: (855) 200-WALA (9252) x102

Email: [email protected]


Seoul Semiconductor Inc.

North America

Andrew Smith

Tel: (901) 831-6614


[email protected]

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