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31 May 2018

Luminus’ spectrally tuned LED light sources target new market opportunities

© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.

Luminus Devices Inc of Sunnyvale, CA, USA – which designs and makes LEDs and solid-state light sources for the global illumination market – has released its third proprietary spectral technology, PerfectWhite, which is said to closely replicate the visual characteristics of halogen lamps (3000K).

Luminus says that, compared with halogen, PerfectWhite was preferred by lighting designers in testing at both the Light + Building and Lightfair events. Though the spectrums are a virtual match – Luminus filled the cyan gap – PerfectWhite’s color point is slightly below the black-body locus and, as a result, there is no green/yellow tint that is common to halogen. A better halogen has long been a wish of the lighting design community, and PerfectWhite delivers without infrared, without green/yellow tint, and without ultraviolet radiation, says Luminus.

“The spectral characteristics of light from a halogen lamp are what make it so appealing, particularly in hospitality and museum applications,” says Tom Jory, VP of illumination. “Unlike other full-spectrum LEDs that emit harmful near-UV radiation, PerfectWhite delivers the visual effect of a halogen lamp by filling the cyan gap that exists in traditional LED technology,” he adds.

Luminus’ portfolio of unique LED spectrums also includes AccuWhite and Sensus spectral technologies, which can be applied to virtually any of the firm’s chip-on-board (COB) LEDs.

AccuWhite is spectrally engineered to maximize color rendering index (CRI) performance, and it delivers the firm’s highest color-rendering products, with a guaranteed CRI minimum of 95 and a typical CRI of 98. With lighting designers and visual display managers continuing to seek the very highest CRI and TM-30-15 ratings for the most demanding interior lighting applications, AccuWhite LEDs offer TM-30-15 values as high as 95 for Rf (fidelity) and 100 for Rg (gamut) while still achieving luminous efficacy as high as 125 lumens per watt at a case temperature of 85°C.

Sensus spectral technology addresses demands in retails shops to inspire shoppers with light that creates more dramatic, vibrant and exciting environments where whites are whiter, and saturated colors like blue and red are richer and more vibrant, says Luminus. Sensus’ engineered spectrums in 3000K and 3500K produce a large gamut area index (GAI BB15 as high as 120) and chromaticity below the black-body curve, allowing people to see pure, bright whites and deeper colors with greater contrast. While other LEDs might also produce pure whites, Luminus claims that Sensus achieves this without sacrificing efficacy, as demonstrated with up to 148lm/W at 85°C.

“Our three spectral technologies serve as the foundation for additional spectral tuning that is specifically targeted at human centric lighting,” says Jory. “Though there’s much still to be discovered, we are already working with industry partners to provide light that serves dual purposes of illuminating beautifully so people can see well and being healthy for people.”

Tags: Luminus Devices LEDs

Visit: www.luminus.com

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