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Nichia

Nichia Vitasolis™ & Optisolis™ LED Lighting Technology

Featuring special spectral profile for human-centric lighting systems.

Nichia has introduced two new LED lighting technologies: The Vitasolis™ LED lighting technology for human-centric lighting systems, and Nichia’s Optisolis™ LED emitters for industry-leading natural light sources.

Vitasolis™

Nichia’s Vitasolis™ LEDs may be used to help control users’ circadian rhythm via a unique spectrum which is intended to stimulate activity.

The introduction of the Nichia Vitasolis™ line comes in response to the growing demand for LED lighting to provide not only low power consumption, but also to provide high quality of light. To do so, Nichia has drawn on more than 50 years of research into the production and application of phosphor coatings.

Circadian effects are produced by specific wavelengths of light, especially in the cyan region. For example, lighting can have an influence on activity throughout the day, including waking up in the morning and inducing sleep at night. While Vitasolis™ provides a natural white colour, part of its spectrum contains a larger amount of energy in the cyan region, between the wavelengths of 470nm and 520nm. This spectral power distribution helps control the human circadian rhythm.

Physiology of the Human Eye

Circadian rhythms are regulated by various cues, including light. The body’s response is triggered by intrinsically photosensitive Retinal Ganglion Cells (ipRGCs), the eyes’ non-image forming photoreceptors. Through ipRGCs, lights of high frequency and intensity promote alertness; the lack of this stimulus causes the body to reduce its expenditure of energy and to prepare for rest.

The sensitivity curve for ipRGCs peaks in the cyan region. There is also a correlation between age and transmittance in the cyan region, due to yellowing of the crystalline lens over time.

Nichia’s Vitasolis™ LEDs produce a comfortable light for people of all ages, emphasising the 470nm-520nm cyan region more than conventional LEDs for general lighting do. The Vitasolis™ range of LEDs also features a broad spectrum to minimise visual fatigue.

Vitasolis™ Features

  • NF2W757G-V3F1 Vitasolis™ LED in 3mm x 3mm x 0.65mm package
  • Luminous output:
    • 35.6lm at 5,000K
    • 33.2lm at 3,000K
  • Minimum 80 CRI
  • 65mA forward current
  • 120° viewing angle

Vitasolis™ Applications

  • Office and commercial lighting
  • Lighting in schools and hospitals
  • Colour-tunable lighting systems

 


 

Optisolis™

LED emitters’ natural light closely matches spectral profile of sunlight.

Nichia’s Optisolis™ LED emitters provide a natural light source with a spectrum which achieves the industry’s closest match to that of the standard illuminants, sunlight and incandescent artificial light.

The Optisolis™ full-spectrum LEDs are intended for use in high-end general lighting. They are fabricated from Nichia’s own blue chip and phosphor technologies.

Lighting equipment manufacturers can use Nichia’s Optisolis™ technology to produce luminaires in which all colours are rendered in the same way as under a standard light. In addition, the almost non-existent ultraviolet content of Optisolis™ LEDs’ output dramatically reduces the degradation of materials compared to that of other LED light sources.

The Optisolis™ LED products are available as surface-mount chip-style packages with specifications.

The Optisolis™ range is also supplied in the form of Chip-on-Board (CoB) emitters which have an approximate maximum luminous output of 3,200lm at a junction temperature of 85°C. The Optisolis™ emitters are available in versions with a correlated colour temperature ranging from 2700K to 6500K.

Optisolis™ Applications

  • Museum lighting
  • Art galleries
  • Hospital lighting
  • Colour evaluation
  • Commercial lighting
  • Retail lighting

 

Nichia — Vitasolis™ & Optisolis™ LED Lighting