Types and protective principles of laser protective

by:LASERRPAIR     2020-06-18
????? Laser and Eye ??????The laser is coherent, monochromatic, and collimating. Depending on the power and wavelength of the laser, it can damage the eyes and skin. The human eye is a complex optical device. Different tissues have different absorption characteristics for lasers of different wavelengths. The degree of damage depends on the radiation power, pupil size, and viewing distance. Because the eye can transmit visible light and near infrared light and converge on the retina, the degree of harm will increase significantly. Laser Standards and Classification The ANSI Z136.1 standard requires the parameters of the optical density (OD) of laser protective glasses. The nominal hazardous area (NHZ) can be calculated. If it exceeds, the goggles can be used to observe diffuse reflection. Optical density (OD) is a measure of the energy attenuation through the filter. The higher the OD value, the higher the attenuation and the higher the protection level. In other words, the OD value is the measured value of the laser energy passing through the filter. OD is the reciprocal of the logarithm of the transmittance, OD = -log10T, T is the transmittance. NOIR laser goggles Features: Cover all laser bands All laser protective lenses are coated with hard film to prevent scratch damage Variety of styles, novel and comfortable Comply with EN207, ANSIZ136 and CE standards
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