Human-centric Lighting

XLamp® CTW Tunable White LEDs for Seamless Tunability

The Cree LED XLamp® CTW Tunable White LEDs are a high-performance family of two- channel CCT-tunable white COB LEDs, designed for exceptional flexibility with 6500K/2700K, 5000K/2200K and 4000K/1800K options, lumen density, efficacy and reliability.

Published by LED professional ·

XLamp® CTW Tunable White LEDs for Seamless Tunability

Ideal for downlights, track lighting and tunable white or dim-to-warm fixtures in commercial, retail and hospitality settings. CTW LEDs simplify luminaire design by enabling smooth color temperature tuning with a single directional optic. They offer the highest lumen output and efficacy in their class, with compact LES sizes (6, 9, 13 mm) that ensure easy integration with existing XLamp optics. A checkerboard two-channel layout ensures superior color mixing through secondary optics, delivering a seamless and authentic lighting experience. Samples available now and production quantities available with standard lead times.

For more information about Cree LED XLamp® CTW Tunable White LEDs...

Cree LED offers one of the industry’s broadest portfolios of application-optimized LED chips and components, leading the industry in performance and reliability. Our team delivers best-in-class technology and breakthrough solutions for focused applications in high power and mid-power general lighting, specialty lighting and video screens. Cree LED develops products backed by expert design assistance, superior sales support and industry-best global customer service. cree-led.com

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Human-centric Lighting

Sunlight, UVB and Vitamin D – Human Centric Lighting Beyond Melanopic Stimulation

by Ir. Rémy C. Broersma and Dr. Ir. Marcel P. Lucassen, Scientists at Signify Research Eindhoven UVB radiation initiates vital processes in our body, one of which is the production of vitamin D in the skin. It is well known that over-exposure to the sun may bring a risk. Less well known is that the same is true for insufficient sun exposure due to our indoor lifestyle. In Part 1 of this article, we first describe the scientific understanding behind vitamin D. In Part 2 we describe how artificial light can be enriched with a safe, low dose of UVB, to supplement natural vitamin D production in the skin. Not too much, not too little.

Human-centric Lighting

Light in the Service of Health – Bringing the Science of Light and Health into Everyday Life through Evidence-based Communication

Light does far more than let us see. In this episode of the LED professional podcast, Manuel Spitschan and Laura Kervezee, co-chairs of the Light for Public Health Initiative, explain how light acts as the master regulator of the body’s internal clock: it synchronises our physiology with the day outside, shapes mood and alertness, and times the release of melatonin, the hormone that governs sleep. The science is settled enough to act on, so the initiative has distilled it into 26 consensus statements on how light affects the body and well-being, written as practical, evidence-based guidance for individuals, employers, schools and cities. A compact 14-minute briefing on why good light is a public-health question, and what to do about it. Based on the authors’ article in LED professional Review #112.

Human-centric Lighting

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Human-centric Lighting

COMMENTARY: Good Light – The Next Growth Story for Our Lighting Industry

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