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<blockquote data-quote="supersonic" data-source="post: 1122421" data-attributes="member: 94"><p>πράσινα.....</p><p></p><p>Class IIIa</p><p></p><p>Lasers in this class are mostly dangerous in combination with optical instruments which change the beam diameter or power density. Output power does not exceed 5 mW. Beam power density may not exceed 2.5 mW/square cm. Many laser sights for firearms and laser pointers are in this category.</p><p>[edit] Class IIIb</p><p></p><p>Lasers in this class may cause damage if the beam enters the eye directly. This generally applies to lasers powered from 5–500 mW. Lasers in this category can cause permanent eye damage with exposures of 1/100th of a second or less depending on the strength of the laser. A diffuse reflection is generally not hazardous but specular reflections can be just as dangerous as direct exposures. Protective eyewear is recommended when direct beam viewing of Class IIIb lasers may occur. Lasers at the high power end of this class may also present a fire hazard and can lightly burn skin.</p></blockquote><p></p>
[QUOTE="supersonic, post: 1122421, member: 94"] πράσινα..... Class IIIa Lasers in this class are mostly dangerous in combination with optical instruments which change the beam diameter or power density. Output power does not exceed 5 mW. Beam power density may not exceed 2.5 mW/square cm. Many laser sights for firearms and laser pointers are in this category. [edit] Class IIIb Lasers in this class may cause damage if the beam enters the eye directly. This generally applies to lasers powered from 5–500 mW. Lasers in this category can cause permanent eye damage with exposures of 1/100th of a second or less depending on the strength of the laser. A diffuse reflection is generally not hazardous but specular reflections can be just as dangerous as direct exposures. Protective eyewear is recommended when direct beam viewing of Class IIIb lasers may occur. Lasers at the high power end of this class may also present a fire hazard and can lightly burn skin. [/QUOTE]
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