Seoul Semiconductor--Develops Solar Spectrum LED

• Seoul Semiconductor has developed SunLike, an innovative LED light source with a spectrum nearly identical to natural sunlight.

 

• This technology has garnered attention for its positive effects on eye health, including reducing eye fatigue and potential myopia.

 

• The technology has been adopted in residential lighting products in Japan and is also being used in museums, aquariums, and other professional facilities.

 

A company executive shared the company's development process and future plans.

[Figure 1] Spectral Comparison: SunLike vs. Conventional LEDs
 

 

The Long-Awaited "Violet LED"

• SunLike reproduces a full spectrum close to that of natural sunlight.

 

• SunLike was originally developed to accurately reproduce natural colors, making it particularly suitable for artwork and exhibits.

 

• Conventional LEDs produce white light by combining a blue LED with yellow, green, and red phosphors.

 

• However, the visible light spectrum consists of seven colors: red, orange, yellow, green, blue, indigo, and violet, and conventional blue LEDs lack the violet wavelength component.

 

• This deficiency leads to a noticeable difference in color perception between artificial and natural lighting. By introducing violet-excited LEDs, SunLike is able to more fully reproduce the visible spectrum, achieving light very similar to natural sunlight.

 

• "It took us about 10 years to commercialize this product," said Vice President Yoshihide Kimura.
   
• In fact, SunLike has already been used in applications where color fidelity is crucial, such as the Royal Palace Museum in Milan and the frescoes at Pompeii. In Japan, SunLike is increasingly being adopted by museums, temples, and historical buildings for similar reasons.

 

• During development, researchers hypothesized that this full-spectrum light source might have additional health benefits, prompting further clinical studies.

Improves eye health and delivers realistic colors.
 

 

Relieves eye fatigue and improves myopia

• A study from Seoul National University College of Medicine showed that SunLike can reduce eye fatigue by 4.3 times, shorten the time it takes to fall asleep by 23%, and improve sleep quality by 1.3 times compared to traditional blue LEDs.

 

• A study from the Singapore Eye Research Institute also showed that exposure to SunLike lighting can slow the progression of myopia in chicks, whose eye structure is similar to that of humans.
   
• Based on these findings, the Chinese government is currently promoting SunLike-equipped desk lamps and classroom lighting in schools, as nearly half of children in China suffer from myopia. Schools and educational institutions across Europe are also promoting SunLike lighting.

 

• Another study from Harvard Medical School in the United States found that exposure to SunLike lighting increased problem-solving accuracy by 5%, accelerated processing time by 3.2 times, and reduced nighttime awakenings by 45% daytime alertness was also improved.

 

• As a result, SunLike is being actively adopted for lighting in desks, classrooms, kindergartens, cram schools, and offices.
   
• Due to its full-spectrum properties, it is also being introduced in hospitals, nursing homes, welfare centers, and educational institutions in Europe and the United States, which can now adjust lighting to better support human circadian rhythms, demand for SunLike is growing for institutions with limited natural light.

 

• "When people hear about sunlight-mimicking lighting, they may worry about UV exposure or sunburn, but SunLike only reproduces the visible light spectrum-it doesn't emit harmful UV or infrared light," said Vice President Kimura.
   
• "Due to its high-fidelity color rendering, it also helps reduce customer dissatisfaction in settings such as beauty salons, cosmetics stores, and fashion retailers, where lighting can distort color perception."

 

[Figure 2] Seoul National University Study: SunLike Improves Sleep Quality by 1.3 Times and Reduces Sleep Onset Time by 23%

 

Entering the High-End Residential Market

• Shinya Nakao, Head of Seoul Semiconductor Lighting Business Division, stated the company's future direction: "We hope more lighting manufacturers will incorporate our LEDs into their products.

 

• We are seeing increasing interest from luxury home builders and interior designers. In nursing homes, we've received feedback that meals appear more appetizing and food waste is reduced.

Healthy lighting is becoming a key selling point and aligns with evolving market demands."

 

• With increased mass production, prices are expected to fall, raising high hopes for widespread adoption of this next-generation light source.

 

About Gainer LED:

Gainer LED was established in 2012. The company focuses on providing advanced technology solutions for medium and high power general lighting, special lighting and high-end display fields. Its products are widely used in commercial lighting, industrial lighting, smart buildings and professional display screens. Relying on a global marketing network and professional technical service system, Gainer LED continues to provide global customers with high-performance lighting products that meet international standards and fully meet the diverse needs of the market.

 

For more customer service needs, please contact us:

• Phone: +8615818679054
• Tel : +86-755-27835429
• Email: info@gainer-led.com