Case studies

Hotel – FlameWarm™ solutions case

Evening

CIE TN015:2023 suggests：

“During the evening, the recommended maximum melanopic EDI is 10 lx, starting at least three hours before bedtime. To achieve low melanopic EDI values, using electric lighting with a low melanopic DER is advisable.”

In the evening, when the distance between the lamp and the person is 50 cm and the Ev is 100 lux, the FlameWarm™ solution achieved m-EDI = 6 lx, which is below the 10 lx recommended by the CIE. In contrast, neither 2700K nor 1800K LEDs can achieve this; both significantly exceed 10 lx.

Night

CIE TN015:2023 suggests：

“During the evening, the recommended maximum melanopic EDI is 10 lx, starting at least three hours before bedtime. To achieve low melanopic EDI values, using electric lighting with a low melanopic DER is advisable.”

At night, when the distance between the lamp and the person is 50 cm and the Ev is 20 lux, the FlameWarm™ solution achieves m-EDI = 1 lx, which meets the CIE recommendation. In contrast, neither 2700K nor 1800K LEDs can achieve this; both are significantly higher than 1 lx.

Healthcare center – Combined solutions case

NASA International Space Station – complex & comprehensive solution

Project background

The Speed of the ISS is 28,000 km/h, astronauts will meet 16 sunrises + 16 sunsets per 24 hours – suffering the worst circadian rhythm mess out of earth. This project is for astronaut Andreas Mogensen, launched in June 2023, for the research of circadian rhythm, psychological health, productivity effect from light, melatonin secretion in space…

Spectrum design

Spectrum is the essence of the lighting recipes. For the complex and comprehensive environment in space, we design 7 different lighting recipes for different purposes based on Yuji Lighting technologies.

Chromaticity design

The 7 LED recipes are for color tuning, natural light spectrum simulation and circadian rhythm regulation.

Light engine design

Main interface is designed with SunWave™ LEDs for main light, circadian LEDs are design as the side-illumination then can create the specific angle for the light to eyes.