As aprotective device, the use of laser goggles is more common, because he can playa role in the protection of the eye, so people choose to use it is more,Xiaobian below to give you a brief introduction to the laser Protective mirroris how to protect our eyes, hope Xiaobian the following description can leteveryone understand the reasons for the choice of Laser safety glasses
Themost important part of the Laser safety goggle is the filter, which is usuallymade from polymer materials and light absorbing materials, or with coloredglass, or coated on lenses, which selectively absorb attenuation or reflect aspecific wavelength, as far as possible More through visible light. Theexisting excitement) glasses are divided into the following types: ordinaryglasses type, opaque border anti-light type, part of the light through the borderof the semi-side light type. The parameters of the laser anti-spread glassesinclude: protection wavelength or wavelength range, the optical density of thefilter on the laser output wavelength, the transmittance of the protectiveglasses on the visible light, the damage to the protective lens (maximumirradiance) Curvature and so on.
Protectionwavelength: different laser radiation laser wavelength is different, need towear protective glasses are different, so protective glasses should be markedwith protection wavelength, the general label is the maximum wavelength oflaser radiation. And many types of lasers, and some lasers emit more than onewavelength, such as helium-neon lasers can emit loomW 632.8 deleted radiationand 10mW of ll50nm radiation, protective glasses may only protect the former,and can not protect the latter; nitrogen ion lasers can Launch 488nm and514.5nnl of radiation, etc., should be able to wear at the same time to protectmulti-wavelength protective glasses.
Opticaldensity: Since the laser irradiance may exceed thousands of times or evenmillions of times on the safety exposure level, the label transmittance is notpractical. For example, protective glasses with o.oooo01 light transmittancecan be represented by optical density 8.o. Optical density is defined as theformula, 20 is incident on the protective lens irradiance; MPE eye cornea canwithstand the maximum allowable exposure. Read Xiaobian above the introduction,I believe we have a lot of protection on the eye of the laser protectionmirror, Xiaobian hope through the above description can help you learn moreabout the role of laser protection mirror, use it must understand him Theprinciple, which seems to be we have to master the content, Xiaobian hope to explainthis part of the content to be able to understand everyone's help.