Optikai sugázrás hatása az emberi bőrre és szemre

Optikai sugárzás tartományai• UV-C 100 – 280 nm• UV-B 280 – 315 nm• UV-A 315 – 400 nm

• Látható 380 – 780 nm

• IR-A 780 nm – 1,4 um• IR-B 1,4 um – 3,0 um• IR-C 3,0 um – 1 mm

Emberi bőr típusok

Fotobiológiai egység

Minimalis erythem dózis

1 SED is equivalent to an erythemal effective radiant exposure of 100 J m-2 . ⋅

“The ambient diurnal exposure on a clear sky summer day in Europe

is approximately 30 SED to 40 SED.”

Erythema hatásgörbe

UV erythema hatásspektrum, különböző bőrtípusok esetén

Pontok: fehér-ember bőrbarnulássa, vonal: egerek fotocarcinogén színképe, nyilak:

becsült emberi carcinogén színkép

Halogén izzós asztali lámpák UV sugárzása

UV sugárzás veszélyessége a szemre

Photokeratoconjunctivitis

Photokeratoconjunctivitis. An inflammatory response of the cornea and conjunctiva following exposure to ultraviolet (UV) radiation. Wavelengths shorter than 315 nm (UV-B and UV-C) are most effective in causing photokeratoconjunctivitis. The peak of the action spectrum is at approximately 270 nm. The Bunsen-Roscoe (reciprocity) relation holds to about 4 hours.

UV Photocataractogenesis

UV Photocataractogenesis. A clouding (opacification) of the lens resulting from life-long exposure to excessive ultraviolet radiant energy incident upon the lens. Wavelengths between 295 nm and 325 nm have been identified as the most hazardous, but some laboratory in vitro evidence exists for cataractogenesis at longer wavelengths in the UV-A spectral region.

UV Erythema and Delayed Effects

UV Erythema and Delayed Effects upon the Skin. Erythema (reddening of the skin), or "sunburn," is produced as an acute effect of overexposure to UV radiation, with UV-C radiation producing the most severe effects. The Bunsen-Roscoe relation holds to 4-5 hours.

Blue Light Photoretinitis

Blue Light Photoretinitis. A photochemically induced retinal injury resulting from radiation exposure at wavelengths primarily between 400 nm and 500 nm. This damage mechanism dominates over retinal thermal injury for times exceeding approximately 10 seconds and is responsible for solar eclipse retinal injury. Eye movements limit retinal exposures, and exposure duration greater than 10 000 s is not considered additive for assessments.

Retinal Thermal Injury

Retinal Thermal Injury ("Retinal Burn"). Retinal injury caused by brief, intense radiant exposure of the retina from wavelengths in the Retinal Hazard Region (approximately 400 nm to 1200-1400 nm; visible plus IR-A) within which the normal ocular media transmit optical radiation to the retina. The maximum assessment time is taken as 10 s. NOTE: In some cases a blue-light photoretinitis is also termed a "retinal burn."

Infrared "Heat" Cataract

Infrared "Heat" Cataract Hazard. A clouding (opacification) of the lens resulting from life-long exposure to excessive near-infrared radiant energy producing an elevated temperature of the lens.