Eyesare the most sensitive organs of human body to laser. Because of thecharacteristics of laser, the energy in space and time on set height. So uselaser protective glasses to strengthen the eye protection. By the lens with theeyes of the aggregation effect, so that the retina in the unit area by thelaser light energy than the corresponding amount of corneal incident nearly 100thousand times higher. Can imagine a pair of good eyes is that we need goodprotection. Laser protection glasses appear to assist more people against laserdamage.
Strengths:
1,technical brief;
2,high visible light transmittance;
3,the decay rate is higher;
4,light reaction time fast <10-9 seconds;
Defect:
1,the light source has severe selectivity. Incident light source is necessary tothe protective mirror (normal direction of the incident light mirror), itsprotective effect is the largest, or vice versa;
2,reflective medium layer easy to take off, and after the fall is not easy toobserve the naked eye, which is the most risk, the domestic reflective medialayer usually a year or so will fall. The higher the light attenuation rate is,the thicker the dielectric layer is. Absorbent goggles add special wavelengthabsorbers to substrate data PMMA or P.C.
Strengths:
1,no selectivity to the light source, can protect all kinds of diffuse reflectionlight;
2,the decay rate is higher;
3,appearance is not afraid of wear, even if there is scratch, does not affect thesafety of light protection;
4,light reaction faster <10-9 seconds; defect: visible light transmittance islow. Laser protection glasses, such as laser engraving, laser cutting, lasermedical treatment, etc., which can absorb or reflect the radiation produced bylaser, and have a special effect on the eyes.
Ifwe do not find a solution to the laser effect, our eyes are affected by thelaser, resulting in different degrees of damage to the eyes. Lasermonochromatic good, very small color difference in the fundus. Because pulselaser injury is much faster than the blink reflex (eye blink reflex time isusually 150-250ms, and the pulse laser can be as short as 10ms), coupled withthe extreme moment in a very small area, the convergence of energy release,even low doses can shine the laser caused severe damage of cornea or retina.
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