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Jan. 25, 2021

NICHIA Reveals Dual Function LED for General Illumination and Bacteria Disinfection.

Tokushima, Japan – 25 January 2021: NICHIA, the world’s largest LED Manufacturer and inventor of the high-brightness blue and white LEDs, announces a new dual function LED that provides both white light and high doses of energy geared for inactivation of various prevalent bacteria.

With the continued surge of COVID-19 and the global impact across the globe, there is a heightened awareness to cleanliness in all aspects of life. While this certainly applies to viruses, it also applies to various types of bacteria present in our daily living environments.

Typical bacteria examples that cause infections are Pseudomonas aeruginosa and Staphylococcus aureus. Additionally, Escherichia coli (e-coli, O157) which causes food poisoning, continues to plague various parts of the world and remains problematic.

Throughout its 65-year history, Nichia has always worked hard to contribute to society through development of innovative products, including LEDs. To assist with the global efforts in reducing these harmful bacteria, Nichia has developed a new, innovative white LED also capable of inactivating bacteria. Nichia has released the new NF2W585AR-P8, a 4.0mm x 3.6mm LED, a staple of Nichia’s General Lighting portfolio.
http://www.nichia.co.jp/jp/product/led_product_data.html?type='NF2W585AR-P8'

It has been well-known for years that UV-C and UV-B wavelengths, ranging from ~200nm–380nm, has been used for disinfection. However, it has recently been proven that visible light, ranging from ~380nm–420nm, also has a bacteria disinfection effect.

The NF2W585AR-P8 is an LED solution with a peak pump emission wavelength of ~405nm. Through Nichia’s leading phosphor and die technology which has been refined over decades of innovation, Nichia is able to achieve the balance between general white lighting and disinfection bacteria, all out of a single LED.

Nichia envisions this LED will be widely used for environmental hygiene maintenance in food factories, kitchens, hospitals, public facilities, and similar applications.

Contact your Nichia representative, or info@nichia.com, for more information and samples.

Bacteria Inactivation Test Results with the 585AR-P8

Method Nichia irradiated bacteria with light and counted the viable bacteria counts after 24 hours.
Result Inactivation rate is 98.9% after 5 hours of irradiation
Bacteria species Pseudomonas aeruginosa2
Radiation condition 1000 lx
(0.127mW/cm2 3) 40cm distance
Temperature 25℃
Lighting Fixture Lightbar using 9pcs of NF2W585AR-P8
Site Tokushima Prefectural Industrial Technology Center

0 hours

Inactivation rate 0%

5 hours

Inactivation rate 98.9%

24 hours

Inactivation rate 99.3%

These results are dependent on this specific test environment and conditions. Nichia did not check the effectiveness for all bacteria species in real environments.

Note:
NF2W585AR-P8 is merely Nichia’s part number.

1Inactivation of Bacterial Pathogens following Exposure to Light from a 405-Nanometer Light-Emitting Diode Array. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Apr. 2009, p. 1932–1937
Mechanism of visible light phototoxicity on Porphyromonas gingivalis and Fusobacterium nucleatum. Photochem. Photobiol.81:1186-1189.
2Pseudomonas aeruginosa: This bacteria is seen in wet areas and has a very strong drug resistance. If the human immune system is suppressed, there is possibility that this bacteria would cause a respiratory tract infection, sepsis, etc.. Accordingly, this bacteria has received significant attention in the medical field in terms of nosocomial infection.
3Wavelength range: 380-420nm.

Contact information;
Public Relations, Nichia Corporation
Tel:+81-884-22-2311
Fax:+81-884-23-7717