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Materials classification and variety of laser protective glasses

With laser technology in military and civil use of broad range, laser protection skill has attracted more and more attention of our species, the increasing of laser protective materials. Know from the protection principle of Laser safety glasses, now laser protective materials can be divided into three categories: one is based on the linear optical principle of laser protection, it has attracted, and albedo attraction / albedo compound; the two is based on the principle of laser protection of nonlinear optics, it mainly uses threeorder nonlinear optical effect, implication albedo, nonlinear refraction, nonlinear attractive nonlinear scattering and nonlinear; the three is based on the principle of laser protection transformation.

             


The laser has the characteristics of strong position, good color and goodcoherence, which makes it widely used in military, light industry, medical treatment and so on. But it is the laser's characteristics of the Department ofthe human body has also formed a great threat. The eyes are the most sensitive to the laser organ of the human body, so the eyes of light on the retina meta machine can make the energy density increased 105 times, so the lowdose can cause great harm on the retina increases until the blindness that eyesight. How to continue to be useful for the laser protection, we have become very difficult to focus on the relevant countries to develop a corresponding laser protection standards. As early as in 1962, the United States put forward some laser radiation limits.

Now China's use of mandatory standards on laser insurance:

Test method for protective performance of CJB-2408-95 laser protective mirror.

GJB-1762-93 laser protective mirror physiological health protection requirements.

JB/T 5524-91 Laser Laboratory Shengmo insurance.

There are many types of laser protective glasses, the food material is not the same, the principle of different occasions are not the same. Therefore,to supply the laser useful protection, be sure to use the detailed requirements of the laser protective mirror to continue the proper choice. Choose the door mirror, the laser with maximum input power (or energy), according to theprimary beam diameter, laser pulse time parameters determine input maximum radiation or the maximum amount of radiation. Then, according to the correspondingtime span and the maximum amount of radiation allowed to shine (shine eye limit) to determine the mirror the minimum optical density value, and select appropriate protective glasses. Select the details of the first:

1, the maximum amount of radiation Hmax (J/m2) or maximum radiation degreeEmax (W/m2);

2, a certain protection span;

In 3, the optical density value of Dmin to the corresponding protection span;

4, the non symmetry of the protective lens, non symmetry, the incident light point of view effect, etc.;

5, the power of anti laser radiation;

6, visible light transmittance;

7, structure and shape.

Above is the work of Laser safety glasses for us to bring about, on thelaser protective material summary of the material and the choice of the meaning of the note. Hope we have seen the current help us, if we want to understand more about the class has nothing to do with the above common sense. Please pay more attention to us.


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