Industry News
联系 CONTACT CONTACT

222 nm Far UV-C Light's Fuction

来源:
日期: 2019-03-26
浏览次数: 280

Kobe University and Ushio Prove 222 nm Far UV-C Light Reduces Bacterial Counts and Causes No Damage on Human Skin

August.18, 2020 - 10:54 — YiningChen 1691 pageviews

      Ushio and a research group from Kobe University Graduate School of Medicine have completed a study proven that irradiation of filtered 222 nm UV-C light on human skin reduces bacterial counts while causing no injury to the skin. This is the first study on the safety of 222 nm far UVC light conducted on humans. The research paper regarding this study is published on PLOS ONE, titled “Exploratory clinical trial on the safety and bactericidal effect of 222-nm ultraviolet C irradiation in healthy humans.”

解读2019政府工作报告 照明行业最关心这六条(Image: Ushio)

      In this study, Ushio’s Care222® UVC disinfection device irradiated 500 mJ/ cm2 of 222 nm UV-C light on the back of 20 healthy volunteers aged from 20 to 80 years. The Care222 device includes an optical filter that eliminates radiation from wavelengths above 230 nm. Twenty-four hours after the irradiation, none of the participants showed any signs of erythema (redness of skin).The back of each participant was irradiated again with 500 mJ/cm2 of 222 nm UVC light using the Care222 device to measure the bacterial flora count on the skin scraped with a swab. The bacterial flora count was taken pre-irradiation, 5 minutes after irradiation, and 30 minutes after irradiation. The bacterial flora count significantly decreased by almost 90% after irradiation with the Care222 device.

      When the irradiated area of the participants was assessed three months post-irradiation, none of them showed any signs of erythema, and no adverse event was noted.Based on these findings, the researchers concluded that irradiation of filtered 222 nm UVC is safe and has a bactericidal effect on the human skin. Note that a previous joint study between Kobe University and Ushio showed that repeated irradiation of filtered 222 nm UV-C light did not cause skin cancer or cataract to hairless mice (a type of mice with extra sensitive skin).

解读2019政府工作报告 照明行业最关心这六条(Image: Ushio)

      It is important to use filtered 222 nm UV-C light in occupied spaces. Unfiltered 222 nm UVC lamps will emit radiation in the 230 nm (UVC) to 320 nm (UVB) range. Irradiation without blocking these higher wavelengths of light has been reported to cause erythema at 50 mJ/ cm2 and damage to the cellular DNA at 63 mJ/ cm2 or more.Ushio’s Care222 device features a patented short band-pass filter that is based on groundbreaking research and technology developed by Columbia University and filters out the longer UV wavelengths emitted by the lamp.

  • 推荐阅读 More
  • 点击次数: 383
    2019 - 03 - 26
    UVC LED Embedded Disinfection Robot Tested Effective for Exterminating CoronavirusAugust.26, 2020 - 16:23 — YiningChen 334 pageviews      The Singapore company OTSAW who launched UVC LED based disinfecting robot announced that the product’s efficacy has been tested using high concentrations of live samples of human Coronavirus flown from the United States.Based on results and tests carried out by A*STAR completed on August 21st, the robot demonstrated a 99.9% efficacy for disinfection within 5 minutes at a working distance of 2.5 meters. The robot O-RX was built in-house by OTSAW and is equipped with a 360-degree camera and LiDAR sensors integrating AI technologies so that it can move around autonomously.In order to ensure efficacy and effectiveness of its disinfecting ...
  • 点击次数: 280
    2019 - 03 - 26
    Kobe University and Ushio Prove 222 nm Far UV-C Light Reduces Bacterial Counts and Causes No Damage on Human SkinAugust.18, 2020 - 10:54 — YiningChen 1691 pageviews      Ushio and a research group from Kobe University Graduate School of Medicine have completed a study proven that irradiation of filtered 222 nm UV-C light on human skin reduces bacterial counts while causing no injury to the skin. This is the first study on the safety of 222 nm far UVC light conducted on humans. The research paper regarding this study is published on PLOS ONE, titled “Exploratory clinical trial on the safety and bactericidal effect of 222-nm ultraviolet C irradiation in healthy humans.”(Image: Ushio)      In this study, Ushio’s Care222® UVC disinfection device irradiated 50...
  • 点击次数: 42
    2020 - 09 - 15
    TrendForce: Newly Infrastructure Reconstruction Drives Market Demand, 2024 Smart Street Lights Market Scale Reaches USD 1.1 BillionAugust.10, 2020 - 11:44 — YiningChen 2276 pageviews      TrendForce’s latest 2020 Global LED Lighting Market Report- Light LED and LED Lighting Market Trend shows that, by 2024, the global LED smart street light market scale will expect to reach US$ 1.1 billion with CAGR of 8.2% during 2019-2024. (smart street market scale, only including lamp luminaire and single lighting control system.)      TrendForce analyst Christine Liu indicates that downstream LED lighting demand is highly related to macroeconomic development. Although there exist many uncertainties under the impact of the COVID-19 epidemic, governments around the world ha...
contact us Headquarters Address: 12th Floor, Building 1, Phase 2, Gaoxinqi Emerging Strategic Industrial Park, Bao'an District 67, Shenzhen fax:0755-83244092 phone:400-600-3012、0755-83243830
Copyright ©2019 - 2022 Shenzhen Purple Lighting Technology Co., Ltd.
Rhino Cloud provides enterprise cloud services
犀牛云提供云计算服务
5
phone
  • 1181851804
  • 0755-8324-3830
1
QQ
6
QR code
Back to top
X
1

QQ设置

3

SKYPE 设置

4

阿里旺旺设置

5

电话号码管理

  • 1181851804
  • 0755-8324-3830
6

二维码管理

Back to top
展开