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What do you understand as UVC LEDs?
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What do you understand as UVC LEDs?

  • Categories:Industry News
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  • Time of issue:2019-07-16 08:50
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(Summary description)Accordingtothe"2008UltravioletLEDApplicationMarketReport-Curing,Medical,Sterilization"ofLEDinside,themarketoutputvalueofUVLEDwillgrowto223millionUSdollarsin2017,itisestimatedthatitwillreach124millionUSdollarsin2022,andthecompoundgrowthratewillreach33%in2017-2022.Inadditiontothestablegrowthofthecuringmarket,surfacesterilization,staticwatersterilizationandmobilewatersterilizationwillbethemaingrowthmomentuminthenextfiveyears(2018-2022).   Today,let'stalkaboutthecoreplayersinthesemaingrowthmomentum:UVCLED.Fordetails,pleaseconsultdeskMing-guangChengli159998297(WeixinNo.)   1.WhatisUV?   First,let'sreviewtheconceptofUV.Ultraviolet,orultraviolet,isanelectromagneticwavewithwavelengthsrangingfrom10to400nm.DifferentbandsofUVcanbedividedintoUVA,UVBandUVC.   UVA:Longwavelength,wavelengthbetween320-400nm,canpenetrateclouds,glassintotheindoorandcar,canpenetrateintothedermisoftheskin,willcausesunburn.UVAcanbesubdividedintoUVA-2(320-340nm)andUVA-1(340-400nm).   UVB:Middlewavelength,wavelengthbetween280-320nm,willbeabsorbedbytheozonelayer,willcausesunburnandskinred,swollen,hotandpainful,seriousblistersorpeeling. UVC:Thewavelengthisbetween100-280nm,butbecausethewavelengthbelow200nanometerisvacuumultraviolet,itcanbeabsorbedbyair,sothewavelengthofUVCthroughtheatmosphereisbetween200-280nm,itswave.   Theshorterthelength,themoredangerousitis,butonlyasmallamountofitwillreachtheearth'ssurfacebecauseitcanbeblockedbytheozonelayer.   2.ThemechanismofUVsterilization?   UVcandestroythemolecularstructureofDNA(deoxyribonucleicacid)orRNA(ribonucleicacid)ofmicroorganisms,sothatbacteriacandieornotreproduce,soastoachievethepurposeofsterilization.   3.UVsterilizationband?   AccordingtotheInternationalUltravioletAssociation,"Theultravioletspectrum('sterilization'region),whichisveryimportantforwaterandairdisinfection,isabsorbedbyDNA(RNAinsomeviruses).Thissterilizationbandisabout200-300nm.   Itisknownthatthebactericidalwavelengthextendstomorethan280nm,butnowitisgenerallyconsideredtoextendto300nm.However,thismayalsochangewithmoreresearch.Scientistshaveshownthatultravioletlightwithwavelengthsbetween280and300nmcanalsobeusedforsterilization.   4.Themostsuitablewavelengthforsterilization?   Thereisamisreadingthat254nmisthebestwavelengthforsterilization,becausethepeakwavelength(determinedonlybythephysicsofthelamp)ofthelow-pressuremercurylampis253.7nm.Infact,asmentionedabove,acertainrangeofwavelengthhasbactericidaleffect.However,itisgenerallybelievedthatthewavelengthof265nmisthebestbecauseitisthepeakoftheDNAabsorptioncurve.Therefore,UVCisthemostsuitablebandforsterilization.   5.WhydidhistorychooseUVCLED?   Historically,mercurylampsweretheonlychoiceforUVsterilization.However,theMinamataConventiononMercuryhasenteredintoforceinChinasinceAugust16,2017.TheConventionrequiresthattheproductionandimportofmercury-containingproductsstipulatedintheConventionbeprohibitedfromJanuary1,21st,andmercurylampsarealsoincluded.Sothere'snotmuchtimeleftformercurylamps,andUVCLEDsaretheonlyreliablealternativetoday.   Ofcourse,thischangeisalsowelcome.TheminiaturizationofUVCLEDcomponentsbringsmoreimaginationspacetotheapplicationscenario,manyofwhicharebeyondthereachoftraditionalmercurylamps.Inaddition,UVCLEDhasmanyadvantages,suchasfaststart-up,moreallowableswitchingtimesandbatterypowersupply.   6.UVCLEDapplicationscenario?   Accordingtothe"2008UltravioletLEDApplicationMarketReport-Curing,MedicalandSterilization"ofLEDinside,surfacesterilization,staticwatersterilizationandmobilewatersterilizationwillbecomethemaingrowthmomentuminthenextfiveyearsoutsidethecuringmarket(2018-2022).Accordingtodifferentapplicationscenarios,wemaybeabletoseetheshapeofUVCLEDintheseapplicationsinthefuture:   Surfacesterilization:highfrequencypubliccontactsurfacessuchasmedicalappliances,maternalandinfantsupplies,intelligenttoilets,refrigerators,tablewarecabinets,fresh-keepingboxes,intelligentgarbagecans,insulatingcups,escalatorhandrailsandticketmachinebuttons,etc.   Stillwatersterilization:drinkingwatertank,humidifier,icemaker;   Sterilizationofflowingwater:Sterilizationmoduleofflowingwater,directdrinkingwatermachine;   Airsterilization:airpurifier,airconditioning.   7.HowtochooseUVCLED?   Opticalpower,peakwavelength,lifetimeandoutputanglecanbeselected.   Opticalpower:Opticalpowerrangesfrom2mW,10mWto100mWforavailableUVCLEDinthecurrentmarket.Differentapplicationshavedifferentpowerrequirements.Generallyspeaking,lightpowercanbematchedbycombiningradiationdistance,dynamicdemandorstaticdemand.Thelargertheirradiationdistanceis,themoredynamictherequirementis,andthegreatertheopticalpowerrequiredis.   Peakwavelength:Asmentionedabove,265nmisthebestwavelengthforsterilization,butconsideringthattheaveragevalueofpeakwavelengthofeachmanufacturerisnotverydifferent,infact,opticalpoweristhemostimportantindicatortomeasurethesterilizationefficiency.   Life:Accordingtotheusetimeofspecificapplicationstoconsiderthedemandforlife,findthemostmatchingUVCLED,thebestissuitable.   Out-of-lightangle:Out-of-lightangleoflampbeadsencapsulatedbyp

What do you understand as UVC LEDs?

(Summary description)Accordingtothe"2008UltravioletLEDApplicationMarketReport-Curing,Medical,Sterilization"ofLEDinside,themarketoutputvalueofUVLEDwillgrowto223millionUSdollarsin2017,itisestimatedthatitwillreach124millionUSdollarsin2022,andthecompoundgrowthratewillreach33%in2017-2022.Inadditiontothestablegrowthofthecuringmarket,surfacesterilization,staticwatersterilizationandmobilewatersterilizationwillbethemaingrowthmomentuminthenextfiveyears(2018-2022).   Today,let'stalkaboutthecoreplayersinthesemaingrowthmomentum:UVCLED.Fordetails,pleaseconsultdeskMing-guangChengli159998297(WeixinNo.)   1.WhatisUV?   First,let'sreviewtheconceptofUV.Ultraviolet,orultraviolet,isanelectromagneticwavewithwavelengthsrangingfrom10to400nm.DifferentbandsofUVcanbedividedintoUVA,UVBandUVC.   UVA:Longwavelength,wavelengthbetween320-400nm,canpenetrateclouds,glassintotheindoorandcar,canpenetrateintothedermisoftheskin,willcausesunburn.UVAcanbesubdividedintoUVA-2(320-340nm)andUVA-1(340-400nm).   UVB:Middlewavelength,wavelengthbetween280-320nm,willbeabsorbedbytheozonelayer,willcausesunburnandskinred,swollen,hotandpainful,seriousblistersorpeeling. UVC:Thewavelengthisbetween100-280nm,butbecausethewavelengthbelow200nanometerisvacuumultraviolet,itcanbeabsorbedbyair,sothewavelengthofUVCthroughtheatmosphereisbetween200-280nm,itswave.   Theshorterthelength,themoredangerousitis,butonlyasmallamountofitwillreachtheearth'ssurfacebecauseitcanbeblockedbytheozonelayer.   2.ThemechanismofUVsterilization?   UVcandestroythemolecularstructureofDNA(deoxyribonucleicacid)orRNA(ribonucleicacid)ofmicroorganisms,sothatbacteriacandieornotreproduce,soastoachievethepurposeofsterilization.   3.UVsterilizationband?   AccordingtotheInternationalUltravioletAssociation,"Theultravioletspectrum('sterilization'region),whichisveryimportantforwaterandairdisinfection,isabsorbedbyDNA(RNAinsomeviruses).Thissterilizationbandisabout200-300nm.   Itisknownthatthebactericidalwavelengthextendstomorethan280nm,butnowitisgenerallyconsideredtoextendto300nm.However,thismayalsochangewithmoreresearch.Scientistshaveshownthatultravioletlightwithwavelengthsbetween280and300nmcanalsobeusedforsterilization.   4.Themostsuitablewavelengthforsterilization?   Thereisamisreadingthat254nmisthebestwavelengthforsterilization,becausethepeakwavelength(determinedonlybythephysicsofthelamp)ofthelow-pressuremercurylampis253.7nm.Infact,asmentionedabove,acertainrangeofwavelengthhasbactericidaleffect.However,itisgenerallybelievedthatthewavelengthof265nmisthebestbecauseitisthepeakoftheDNAabsorptioncurve.Therefore,UVCisthemostsuitablebandforsterilization.   5.WhydidhistorychooseUVCLED?   Historically,mercurylampsweretheonlychoiceforUVsterilization.However,theMinamataConventiononMercuryhasenteredintoforceinChinasinceAugust16,2017.TheConventionrequiresthattheproductionandimportofmercury-containingproductsstipulatedintheConventionbeprohibitedfromJanuary1,21st,andmercurylampsarealsoincluded.Sothere'snotmuchtimeleftformercurylamps,andUVCLEDsaretheonlyreliablealternativetoday.   Ofcourse,thischangeisalsowelcome.TheminiaturizationofUVCLEDcomponentsbringsmoreimaginationspacetotheapplicationscenario,manyofwhicharebeyondthereachoftraditionalmercurylamps.Inaddition,UVCLEDhasmanyadvantages,suchasfaststart-up,moreallowableswitchingtimesandbatterypowersupply.   6.UVCLEDapplicationscenario?   Accordingtothe"2008UltravioletLEDApplicationMarketReport-Curing,MedicalandSterilization"ofLEDinside,surfacesterilization,staticwatersterilizationandmobilewatersterilizationwillbecomethemaingrowthmomentuminthenextfiveyearsoutsidethecuringmarket(2018-2022).Accordingtodifferentapplicationscenarios,wemaybeabletoseetheshapeofUVCLEDintheseapplicationsinthefuture:   Surfacesterilization:highfrequencypubliccontactsurfacessuchasmedicalappliances,maternalandinfantsupplies,intelligenttoilets,refrigerators,tablewarecabinets,fresh-keepingboxes,intelligentgarbagecans,insulatingcups,escalatorhandrailsandticketmachinebuttons,etc.   Stillwatersterilization:drinkingwatertank,humidifier,icemaker;   Sterilizationofflowingwater:Sterilizationmoduleofflowingwater,directdrinkingwatermachine;   Airsterilization:airpurifier,airconditioning.   7.HowtochooseUVCLED?   Opticalpower,peakwavelength,lifetimeandoutputanglecanbeselected.   Opticalpower:Opticalpowerrangesfrom2mW,10mWto100mWforavailableUVCLEDinthecurrentmarket.Differentapplicationshavedifferentpowerrequirements.Generallyspeaking,lightpowercanbematchedbycombiningradiationdistance,dynamicdemandorstaticdemand.Thelargertheirradiationdistanceis,themoredynamictherequirementis,andthegreatertheopticalpowerrequiredis.   Peakwavelength:Asmentionedabove,265nmisthebestwavelengthforsterilization,butconsideringthattheaveragevalueofpeakwavelengthofeachmanufacturerisnotverydifferent,infact,opticalpoweristhemostimportantindicatortomeasurethesterilizationefficiency.   Life:Accordingtotheusetimeofspecificapplicationstoconsiderthedemandforlife,findthemostmatchingUVCLED,thebestissuitable.   Out-of-lightangle:Out-of-lightangleoflampbeadsencapsulatedbyp

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2019-07-16 08:50
  • Views:
Information
According to the "2008 Ultraviolet LED Application Market Report - Curing, Medical, Sterilization" of LED inside, the market output value of UV LED will grow to 223 million US dollars in 2017, it is estimated that it will reach 124 million US dollars in 2022, and the compound growth rate will reach 33% in 2017-2022. In addition to the stable growth of the curing market, surface sterilization, static water sterilization and mobile water sterilization will be the main growth momentum in the next five years (2018-2022).
 
 
 
Today, let's talk about the core players in these main growth momentum: UVC LED. For details, please consult desk Ming-guang Chengli 159998297 (Weixin No.)
 
 
 
1. What is UV?
 
 
 
First, let's review the concept of UV. Ultraviolet, or ultraviolet, is an electromagnetic wave with wavelengths ranging from 10 to 400 nm. Different bands of UV can be divided into UVA, UVB and UVC.
 
 
 
UVA: Long wavelength, wavelength between 320-400 nm, can penetrate clouds, glass into the indoor and car, can penetrate into the dermis of the skin, will cause sunburn. UVA can be subdivided into UVA-2 (320-340 nm) and UVA-1 (340-400 nm).
 
 
 
UVB: Middle wavelength, wavelength between 280-320 nm, will be absorbed by the ozone layer, will cause sunburn and skin red, swollen, hot and painful, serious blisters or peeling.
 
UVC: The wavelength is between 100-280 nm, but because the wavelength below 200 nanometer is vacuum ultraviolet, it can be absorbed by air, so the wavelength of UVC through the atmosphere is between 200-280 nm, its wave.
 
 
 
The shorter the length, the more dangerous it is, but only a small amount of it will reach the earth's surface because it can be blocked by the ozone layer.
 
 
 
2. The mechanism of UV sterilization?
 
 
 
UV can destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) of microorganisms, so that bacteria can die or not reproduce, so as to achieve the purpose of sterilization.
 
 
 
3. UV sterilization band?
 
 
 
According to the International Ultraviolet Association, "The ultraviolet spectrum ('sterilization'region), which is very important for water and air disinfection, is absorbed by DNA (RNA in some viruses). This sterilization band is about 200-300 nm.
 
 
 
It is known that the bactericidal wavelength extends to more than 280 nm, but now it is generally considered to extend to 300 nm. However, this may also change with more research. Scientists have shown that ultraviolet light with wavelengths between 280 and 300 nm can also be used for sterilization.
 
 
 
4. The most suitable wavelength for sterilization?
 
 
 
There is a misreading that 254 nm is the best wavelength for sterilization, because the peak wavelength (determined only by the physics of the lamp) of the low-pressure mercury lamp is 253.7 nm. In fact, as mentioned above, a certain range of wavelength has bactericidal effect. However, it is generally believed that the wavelength of 265 nm is the best because it is the peak of the DNA absorption curve. Therefore, UVC is the most suitable band for sterilization.
 
 
 
5. Why did history choose UVC LED?
 
 
 
Historically, mercury lamps were the only choice for UV sterilization. However, the Minamata Convention on Mercury has entered into force in China since August 16, 2017. The Convention requires that the production and import of mercury-containing products stipulated in the Convention be prohibited from January 1, 21st, and mercury lamps are also included. So there's not much time left for mercury lamps, and UVC LEDs are the only reliable alternative today.
 
 
 
Of course, this change is also welcome. The miniaturization of UVC LED components brings more imagination space to the application scenario, many of which are beyond the reach of traditional mercury lamps. In addition, UVC LED has many advantages, such as fast start-up, more allowable switching times and battery power supply.
 
 
 
6. UVC LED application scenario?
 
 
 
According to the "2008 Ultraviolet LED Application Market Report - Curing, Medical and Sterilization" of LED inside, surface sterilization, static water sterilization and mobile water sterilization will become the main growth momentum in the next five years outside the curing market (2018-2022). According to different application scenarios, we may be able to see the shape of UVC LED in these applications in the future:
 
 
 
Surface sterilization: high frequency public contact surfaces such as medical appliances, maternal and infant supplies, intelligent toilets, refrigerators, tableware cabinets, fresh-keeping boxes, intelligent garbage cans, insulating cups, escalator handrails and ticket machine buttons, etc.
 
 
 
Still water sterilization: drinking water tank, humidifier, ice maker;
 
 
 
Sterilization of flowing water: Sterilization module of flowing water, direct drinking water machine;
 
 
 
Air sterilization: air purifier, air conditioning.
 
 
 
7. How to choose UVC LED?
 
 
 
Optical power, peak wavelength, lifetime and output angle can be selected.
 
 
 
Optical power: Optical power ranges from 2 mW, 10 mW to 100 mW for available UVC LED in the current market. Different applications have different power requirements. Generally speaking, light power can be matched by combining radiation distance, dynamic demand or static demand. The larger the irradiation distance is, the more dynamic the requirement is, and the greater the optical power required is.
 
 
 
Peak wavelength: As mentioned above, 265 nm is the best wavelength for sterilization, but considering that the average value of peak wavelength of each manufacturer is not very different, in fact, optical power is the most important indicator to measure the sterilization efficiency.
 
 
 
Life: According to the use time of specific applications to consider the demand for life, find the most matching UVC LED, the best is suitable.
 
 
 
Out-of-light angle: Out-of-light angle of lamp beads encapsulated by plane lens is usually between 120 and 140 degrees. Out-of-light angle encapsulated by spherical lens is adjustable between 60 and 140 degrees. In fact, no matter how big the angle of illumination of the UVC LED is, enough LED can be designed to completely cover the required sterilization space. In scenarios that are insensitive to the sterilization range, a small light-out angle can make the light more concentrated, thus shortening the sterilization time.
 
 
 
For details, please consult desk Ming-guang Chengli 159998297 (Weixin No.)

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Time of issue:2019-05-17 00:00:00

Service hotline

0769-87285383

Welcome your consultation!

Messages

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Copyright © Dongguan Taiming Photoelectric Technology Co., Ltd. All Rights Reserved. 粤ICP备15044056号-2

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