Tunable White

Tunable white LED systems are designed to accurately replicate the dynamic color shifts of natural sunlight by combining two different types of white LEDs. This allows precise control over the light's color temperature, which is scientifically measured in degrees Kelvin (K). For instance, natural light at sunrise or sunset typically falls between 2000-3500K, known as warm white. As the day progresses, morning light shifts to pure white with a color temperature of 3500-4500K, and at noon, it transitions to a cold white in the range of 5500-6500K.

Tunable White for Human-Centric Lighting

Tunable white technology is essential to Human-Centric Lighting (HCL), which enhances well-being by aligning indoor lighting with natural daylight patterns. By shifting color temperature throughout the day—from energizing cool tones to relaxing warm hues—HCL supports mood, focus, productivity, and healthy sleep cycles. Tunable White LED modules, combined with the versatile PowerController system, deliver the full benefits of HCL with high-quality light, smooth adjustability, and energy-efficient performance.

Nichia - Leading expertise in the development of HCL light

Nichia has made ground-breaking progress in the field of human-centred lighting in particular. By adjusting the colour temperature and brightness of the light, Nichia LEDs can imitate the natural course of daylight. This technology makes it possible to support and maintain the human circadian rhythm. From morning to evening, the light can be adjusted to mimic the natural quality of light and meet the needs of the human body and mind.

Nichia offers a variety of LED technologies that can be used in the field of Human Centric Lighting. These include colour temperature tuning, spectral tuning and intelligent lighting systems. These technologies make it possible to adapt the light quality and function to individual needs and create an optimal lighting environment for people.

Nichia Optisolis HCL -The Closest Light to Sunlight

Full-Spectrum

HCL with Nichia Optisolis™ LEDs offer a continuous spectral output that closely mimics natural daylight, ensuring colors are rendered vividly and accurately—without gaps or artificial shifts. With exceptional values for Ra, R9, and R15, every hue appears just as it should.

Ultra-High Color Rendering

With a CRI reaching up to 99, Nichia Optisolis™ HCL lighting outperforms conventional high-CRI systems. It delivers superior performance in TM-30-15 metrics, with Rf and Rg values near perfect (Rf98 / Rg99), ensuring flawless color rendering.

No UV Radiation

Unlike traditional lighting, Optisolis™ HCL emits virtually no ultraviolet radiation. This protects sensitive materials—like artwork, textiles, and historical documents—from UV-related damage, making it ideal for museums and galleries.

ULTRA-HIGH CRI

With a CRI of Ra98-99, Optisolis™ LEDs surpass conventional high-CRI LEDs. They achieve top scores in the IES TM-30-15 light quality tests, with R9≥85, Rf=98 and Rg=99, demonstrating their exceptional ability to render colors faithfully across the entire spectrum.

Industry-Leading Variety of Tunable-White options

Nichia endeavors to positively influence people's health and well-being with its LED technologies and solutions. With its commitment to light quality, energy efficiency and human-centred lighting, Nichia remains a pioneer in the industry and drives the development of innovative solutions.

With Nichia white lighting technology, HCL can be further tuned to match the

human circadian rhythm.

Nichia Dynasolis

Advanced lighting solution is ideal for improving health, well-being, and productivity.

Discover Dynasolis

Nichia H6 High-Class CRI

Patented phosphor technology for maximum efficiency with outstanding light quality.

Discover H6 High-CRI

Nichia 2-in-1 Tunable-LED

Two colour temperatures combined under one light-emitting surface for a slimline design of LED tunable-white systems/

Discover Nichia 2-in-1

Smart Lighting Control with Casambi

for Human-Centric Applications

We develop smart lighting solutions that adapt to users’ needs—whether in offices, industrial settings, or homes. Our dynamic lighting systems, powered by Casambi technology, offer intuitive control via smartphone, tablet, PC, or the Casambi XPRESS switch. As a Casambi system partner, we’ve created control units with integrated Casambi Ready modules that wirelessly adjust light color and brightness throughout the day. This enables seamless, personalized Human-Centric Lighting that enhances comfort, productivity, and well-being.

About Casambi

MiniController with Casambi tunable lighting control

The MiniController is a compact yet powerful control unit designed specifically for Tunable White LED modules. Compatible with 12 V, 24 V, and 30 V systems, it enables the straightforward and cost-effective implementation of Tunable White lighting in a wide range of luminaires. Its flexible configuration options and high-performance capabilities make it an ideal choice for diverse lighting applications—delivering precise control of brightness and color temperature in an impressively small form factor.

PowerController with Casambi tunable lighting control

Our PowerController is a compact yet highly versatile control unit for Tunable White, Dim2Warm, and dynamic color change applications. Despite its minimal size of just 99 x 29 x 13 mm, it offers exceptional functionality with four output channels that can be easily configured via the via smartphone or tablet in the Casambi app or to control them with DALI technology.