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Webinar UV-C
14.05.2020, Nichia, LUMITRONIX
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LUMITRONIX LED-TECHNIK GMBH
UVA/UVB/UVC experienced Development & productionof LED modules (OEM)
65 employees in HechingenNichia distributor
since 2011
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UVC radiation
• 200- 280nm wavelength
• Fully absorbed by earth atmosphere
• Inactivation of bacteria and virus
• Inactivation due to effect on nucleic acid and amino acid
• Specific radiation spectrum has a big impact on the efficacy
• UV dose in mJ/cm² for the specific germ is relevant, lists of
research results available*
* https://iuvanews.com/stories/pdf/archives/080104Cairns_Article_2006.pdf
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Spectral sensitivity
• Goal: Achieve a sufficient UV dose in mJ/cm²
• Spectral sensitivity of germ needed
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Spectrum efficacy Escherichia coli
Aia1 Aia2
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LED spectrum
• LED spectrum 1: Peak wavelength 280nm
• LED spectrum 2: Peak wavelength 275nm, -48% efficacy
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LED Spectrum of two different LED types
Aia1 Aia2 LED Spectrum 1 LED Spectrum 2
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Weigthed LED spectrum
• LED spectrum 1: +52% more efficient
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Spectrum efficacy Escherichia coli
Aia1 Aia2 LED Spectrum 1 LED Spectrum 2 LED Spectrum 1 weighted LED Spectrum 2 weighted
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Working distance
Ledil Oy, optics for UV applications
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UVC LED module
• Stainless steel case
• Coated glass reflector
• Quartzglass cover (92% transmission)
• IP68 protection
• Fiber gaskets
• 50mW optical output
• 280nm
• Viewing angle: 13.5°
• 350mA, 5.2V = 2.9W
• Passive cooling
• L70B50 > 8.000h
Datasheet will be published within a few days
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Effective UVC dose
• Illuminating distance: 5-21cm
Example: Escherichia coli, 0.7-3mJ/cm² *
Illuminance weighted with spectral sensitivity
* DIN 5031-10: 2018-03
Distance mW/cm² Area d=
Seconds
@3mJ/cm²
5cm 0,83 7,2cm 3,6
10cm 0,6 8,5cm 5,0
20cm 0,36 11cm 8,3
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Driver & safety
• WHO warning 2020
• Photobiological safety DIN EN 62471-2009
• ICNIRP Guidelines (2004)
https://www.who.int/images/default-source/health-topics/coronavirus/myth-busters/mb---uv-light-edited.png?sfvrsn=14c7467d_2
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Driver & safety
• Saftey button (eg in a door)
• Osram Motion Sensor for safety (60 sec)
• External Switch
• 0-10V brightness adjustment
• PowerController CC, 350mA
• PowerController UVC
• ERP VLM40E-48-T
• 3 status LEDs of different color
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Driver & safety
• Saftey button (eg in a door)
• Osram Motion Sensor for safety (60 sec)
• External Switch
• 0-10V brightness adjustment
• PowerController CC, 350mA
• PowerController UVC
• ERP VLM40E-48-T
• 3 status LEDs of different color
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Driver & safety
• Saftey button (eg in a door)
• Osram Motion Sensor for safety (60 sec)
• External Switch
• 0-10V brightness adjustment
• PowerController CC, 350mA
• PowerController UVC
• ERP VLM40E-48-T
• 3 status LEDs of different color
![Page 14: Webinar UV-C 14.05.2020, Nichia, LUMITRONIX · Aia1 Aia2 LED Spectrum 1 LED Spectrum 2 LED Spectrum 1 weighted LED Spectrum 2 weighted. Working distance Ledil Oy, optics for UV applications](https://reader030.vdocument.in/reader030/viewer/2022040615/5f0de5e77e708231d43ca036/html5/thumbnails/14.jpg)
Driver & safety
• Saftey button (eg in a door)
• Osram Motion Sensor for safety (60 sec)
• External Switch
• 0-10V brightness adjustment
• PowerController CC, 350mA
• PowerController UVC
• ERP VLM40E-48-T
• 3 status LEDs of different color
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Wiring diagram