Trust us to understand that laserprotective eyewear is a special kind of glasses that can be used to avoid orreduce the damage of the laser. It is also an efficient safety goggles, suitablefor a variety of lasers, laser pen, a series of optical safety glasses wearingcomfortable and beautiful, safe and reliable. The laser protective glasses arereflective and absorptive, and can be used to protect the laser and the stronglight of the specific band
Laser has the characteristics of strongdirectivity, good color and good coherence, which makes it widely used inmilitary, industrial and medical fields. But it is precisely thesecharacteristics of the laser also pose a great threat to the human body. Theeyes are the most sensitive to human organs because of the aggregation effectof laser, eye light can make the retina energy density increased 105 times, sothe low dose can cause severe damage on the retina resulting in reduced visionand even blindness. With laser technology in military and civil areas arewidely used, more and more laser protection skills was everyone's attention,how to become useful for laser protection, we attach great importance to thequestion that countries accordingly developed laser protection standard. Asearly as 1962, the United States put forward a number of laser safety exposurelimits. From the protection principle, the laser protection data can be dividedinto three categories: one is based on the linear optical principle of laserprotection, it contains absorption, reflective and absorption reflection type;the two is based on the principle of laser protection of nonlinear optics, itmainly uses the three order nonlinear optical effects, including nonlinearabsorption nonlinear refraction, nonlinear scattering and nonlinear reflection;the three is based on the principle of laser protection transformation.
There are many types of laser protectivegoggles, the information is not the same, different principles, the use ofoccasions are not the same. Therefore, in order to provide useful protection tothe laser, the laser goggles must be selected reasonably according to thedetailed requirements. Choose the door mirror, the maximum output power of the lasersused according to the primary (or energy), beam diameter, laser pulse timeparameters determine the maximum output irradiance or maximum exposure. Then,according to the maximum amount of the corresponding wavelength and lightirradiation to time (eye shine limit) concluded that glasses the minimumoptical density value, and select the appropriate protective glasses.
The detailed conditions of selection are:
1, the maximum amount of radiation Hmax(J/m2) Emax (W/m2) or the maximum irradiance;
2,specific protection wavelength;
3, the optical density value of Dmin to thecorresponding protective wavelength;
4, the protective lens non-uniformity,asymmetry, the effect of the incident light point of view;
5, anti laser radiation ability;
6, visible light transmittance;
7, structure and shape
Laser protective glasses for the crowd:laser operators, computer operator, driver, gas welder, electric welder, hightemperature furnace operating personnel, medical or industrial personnel tooperate the X- light perspective; is suitable for protection of ultravioletlaser, excimer laser, Nd: glass laser, semiconductor laser, CO laser, Nd: YAGlaser, ruby laser CO2 laser, laser and other lasers gaas.
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