Photobiological chitetezo muyezo nyali

M'mbuyomu, panalibe njira yoyezera komanso yowunikira mwatsatanetsatane za kuwonongeka komwe kumachitika chifukwa cha kuwala kwa thupi la munthu.Njira yoyesera yachikhalidwe ndikuwunika zomwe zili mu ultraviolet kapena kuwala kosawoneka komwe kuli mumafunde.Chifukwa chake, ukadaulo watsopano wowunikira wa LED ukawoneka, titha kugwiritsa ntchito muyezo womwewo wa IEC / EN 60825 monga kuwunika kwa zinthu za laser.IEC / EN 60825 makamaka imayesa ndikuwerengera mphamvu ya kuwala kwautali umodzi.Tsopano LED ndi kuwala kwa bandi lalikulu, kotero Standard IEC / EN 60825 sikugwiranso ntchito pakuwunikira.Chifukwa chake, IEC yapanga IEC / EN 62471 kuti ikhale pachiwopsezo.

Cholinga cha IEC / EN62471 ndikuwunika kuopsa kwa ma radiation okhudzana ndi nyali zosiyanasiyana ndi machitidwe a nyali, m'malo mokwanira zomwe zimafunikira pamlingo wamagetsi amagetsi amtundu wa LED mu IEC / EN60825 muyezo, kuwonjezera zofunikira za Photobiological, kuphatikiza mphamvu ya radiation, kuwala kwama radiation, ndi zina zambiri. ., ndikuyika zinthuzo molingana ndi mayeso, kuphatikiza:

Palibe ngozi;Kalasi Ⅰ ngozi (chiwopsezo chochepa);Kalasi Ⅱ ngozi (chiwopsezo chochepa);Kalasi Ⅲngozi (chiwopsezo chachikulu)

Mulingo wosakhululukidwa (palibe chiwopsezo): sichidzayambitsa ngozi yamtundu uliwonse wa radiation pansi pa malire omwe afotokozedwa mu muyezowu.

Kalasi I (chiwopsezo chochepa): pakagwiritsidwe ntchito wamba, sichingadzetse zoopsa za radiation yapakhungu malinga ndi momwe anthu amawunikira.

Kalasi II (chiwopsezo chochepa): kutengera kupeŵa kochititsa chidwi kwa maso a anthu kugwero lowala kwambiri kapena kuyankha movutikira kwa ma radiation yapakatikati, sizingadzetse zoopsa za radiation.

Gulu lachitatu (chiwopsezo chachikulu): ngakhale kuwunikira kwakanthawi kochepa kungayambitse ngozi ya radiation.

Muyezo wa EU EN62471:2008 wakhazikitsidwa kuyambira pa Seputembara 1, 2009, ndipo gawo la LED la EN60825 lidzakhala lopanda ntchito pa Seputembara 1, 2010.

EN 62471 imaphimbidwa ndi CE Low Voltage Directive (LVD Directive 2006 / 95 / EC) ndi Directive kuwala kwamagetsi (AORD 2006 / 25).

TS EN 62471 IEC / EN 62471 imagwira ntchito pa nyali zonse ndi makina a nyali, kuphatikiza ma LED, mababu a incandescent, nyali za fulorosenti, nyali zotulutsa mpweya, nyali za arc ndi nyali zina ndi nyali.

Malamulo a EU 244 / 2009 pazamphamvu zamagetsi zamagetsi zapakhomo zomwe sizikuyenda molunjika zimanenanso kuti kuyesa kwa ma radiation a UV kuyenera kuchitidwa molingana ndi IEC / EN 62471 (makamaka nyali zopulumutsa mphamvu).

Chitsimikizo cha CB cha nyali zodzikonza zokha za LED ziyenera kuphatikiza kuyesa chitetezo chazithunzi molingana ndi IEC 62471 ndi IEC TR 62471-2.Malinga ndi malingaliro a OSM / CTL, nyali za LED ziyenera kuyesedwa molingana ndi IEC / EN 62471. Chizindikiro cha module ya LED yoteteza maso aumunthu idzatanthauza IEC / EN62471

Zotsatira zoyipa za chitetezo chazithunzi pamaso / khungu la munthu

1. Zotsatira zoyipa za kuwala kwa ultraviolet pamaso / khungu la munthu

Ku maso

1) Cataract: osiyanasiyana 180 - 200 nm mpaka 400 - 420 nm makamaka 290 nm mpaka 325 nm

2) Conjunctivitis: mawonekedwe osiyanasiyana 180 - 200 nm mpaka 400 - 420 nm makamaka 200 nm mpaka 320 nm "

3) Keratitis: mawonekedwe osiyanasiyana 180 - 200 nm mpaka 400 - 420 nm "

Ku khungu

4) Erythema: osiyanasiyana 180-200 nm mpaka 400-420 nm makamaka 200 nm mpaka 320 nm

5) Khungu zotanuka minofu alibe

6) Khansa yapakhungu

1. Zotsatira zoyipa za kuwala kowoneka ndi infrared pamaso / khungu la munthu

Ku maso

1) Retinitis (kuvulala kowala kwa buluu): mawonekedwe owoneka bwino a 300 nm mpaka 700 nm makamaka 400 mpaka 500 nm 2) Kuvulala kwapakhungu la retina: mawonekedwe osiyanasiyana 380 nm mpaka 1400 nm

3) Cataract ya infrared: 780nm mpaka 3000nm

4) Anterior Aqueous humor evaporation: spectral range 1400 nm to 3000 nm

5) Kuwotcha kwa Corneal: osiyanasiyana 1400 nm mpaka 3000 nm

Ku Skin

6) Kutentha kwa khungu: pectral range 380 nm mpaka 3000 nm

C. Zotsatira zoyipa za kuwala kwa kuwala pa maso / khungu la munthu

Zotsatirazi ndi mndandanda wa malire a IEC62471 pachiwopsezo chazithunzi:

EN62471 ndi IEC62471 ali ndi malire osiyana pang'ono pazachiwopsezo chazithunzi, motere:

1. Malingana ndi EN62471:2008, kuwala kwa ultraviolet kumayambira ku 180nm, pamene malinga ndi IEC62471: 2006, kuwala kwa ultraviolet kumayambira ku 200nm;

2, Mtengo wa S(λ) wa EN62471:2008 walembedwa m'masitepe a 1nm, pomwe IEC62471:2006 yalembedwa mu masitepe a 5nm;

3. Pakuwunika kwapafupi kwa chiwopsezo cha ultraviolet, malire a Class 0 ngozi (palibe chiopsezo) cha kuwala kwa UVA ndi 0,33w / m-2 malinga ndi EN62471:2008 muyezo, pomwe malire a Class 0 hazard (palibe chiopsezo) cha UVA. kuyatsa molingana ndi IEC62471:2006 muyezo ndi 10,0w / m-2;

4. Pachiwopsezo cha kuwala kwa buluu: kuyesa kwachiwopsezo chaching'ono (300 - 700nm), malire a Class 0 ngozi (palibe chiopsezo) malinga ndi EN62471:2008 ndi 0,01w / m-2, pomwe malire a Class 0 ngozi (palibe chiopsezo) malinga ndi IEC62471:2006 ndi 1,0w / m-2.

Malinga ndi IEC / EN 62471, magwero a kuwala kwa ma radiation amagawidwa malinga ndi zoopsa zomwe zingachitike pazithunzi.Ndikofunikira kwambiri komanso kopindulitsa kuti anthu agawire magwero a kuwala komwe kumatulutsa kuwala kwa dzuwa.Ngati gwero la kuwala likutchulidwa kuti ndi gulu la "chitetezo" (gulu lachikhululukiro) kapena gulu lachiwopsezo chochepa (gulu lachiwopsezo I), palibe chifukwa chofotokozera mwatsatanetsatane komanso nthawi zambiri kuwunika kwapantchito chifukwa alibe Photobiological Safety Risks. .

 Chabwinoimatenga mikanda yodziwika bwino yapadziko lonse lapansi, ndi nyali zonyezimira za LED, nyali za bulaketi za LED, nyali zotsimikizira fumbi za LED, nyali zamagulu, nyali za grille, ndi zina zambiri zopangidwa ndi Wellway zimatha kukwaniritsa zofunikira za makasitomala pa EN62471: 2008 muyezo.Kuyesa kwachitetezo cha photobiological kwa mikanda ndi nyali zonse zimadutsa ndi bungwe loyesa lachitatu.

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