How to choose the laser protective glasses
Between absorptive laser protective glasses and reflective laser protective glasses
There are two kinds of laser protective glasses in the market ,One is the absorptive laser protective glasses and the other is reflective laser protective glasses
The reflective laser protective glasses are coated with multiple reflective media layers on the surface of the base optical glass and the absorptive protective glasses is added some special wavelength absorber to the base material PMMA or P.C.
Today i will introduce the difference of the two laser safety glasses .then you will know how to choose.
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Advantage |
Disadvantages |
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Reflective
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1.The process is simple 2.High visible light transmittance; 3.Higher attenuation rate; 4.The light response time is 10-9 seconds faster
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1.The light source has serious selectivity. The incident light source must face the protective mirror (the normal direction of the incident light mirror), and its protective effect is the largest, Otherwise the smallest 2.The reflective medium layer is easy to peel off, and it is not easy to observe with the naked eye after falling off. This is also the most dangerous. The reflective medium layer in China generally falls off in about one year. the thicker the plated dielectric layer during The higher the light attenuation rate, and the easier it will fall off.
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Absorptive
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1.There is no selectivity to the light source, which can safely protect all kinds of diffuse reflected light; 2.The attenuation rate is high;The surface is not afraid of abrasion, even if there are scratches, it will not affect the safety of light; 3.Faster light response ,it is about 10-9 seconds faster;
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The visible light transmittance is not high . |
