Single-emitter LEDs improve light quality

Three technologies to improve the delivery of light quality will be demonstrated in LEDs that will be unveiled at Light + Building 2020 by Nichia.

The LEDs deliver high efficacy circadian lighting, replication of natural light and dual-colour temperature on a single emitter to shrink optics, says Nichia.

Vitasolis technology enables users to benefit from the energy savings of LEDs and the advantages of human-centric lighting (HCL). It uses a special blend of phosphors to increase cyan in the resulting natural white light, which has a price premium in conventional LEDs. Cyan facilitates a better regulation of the body’s clock to improve motivation and productivity, without losing efficacy and Vitasolis LEDs also deliver a crisper white and a wider-wavelength spectrum to deliver more comfortable illumination, says Nichia.

For fixture manufacturers, benefits include backwards-compatibility with Nichia’s other LED product families, for it to be easily and quickly deployed, without any changes in power, driver compatibility, beam shape or safety testing. There is no need to adapt or redesign fixtures, says the company.

Optisolis is claimed to be the world’s first series of packaged LEDs and chip-on-board (COB) products that accurately mimic natural light sources without producing any harmful ultraviolet (UV) light. Optisolis can be used to prevent degradation of things like artworks, printed materials and textiles.

Designed to replace halogen and conventional LED in directional lighting applications, the natural colour rendering performance delivered by Optisolis technology allows visitors to fully appreciate the high fidelity of light surrounding them, explains the company. The colour rendering index (CRI) value of over 98 at full intensity also delivers an R9 red content (a key saturated solid colour not counted in Ra) of over 94. Optisolis is also claimed to be the first LED to guarantee a minimum value for R10 to R15.

Finally, a two-in-one tunable white, single light-emitting surface (LES), mid-power 3030 LED enables luminaire manufacturers to improve colour tuning, shrink optics and fixture profiles. It allows for higher colour quality, in some cases up to 90 CRI, in the popular CCT regions as a standard and delivers colour tuning and mixing within a single LES instead of two which are currently used in luminaires to to achieve colour tuning, which creates unwanted optical distributions and visual effects while also limiting the lumen output in a single luminaire.

Light + Building 2020 will take place in Frankfurt, Germany, 8 to 13 March 2020.

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