Laser protection glasses 200-2000nm laser glasses safety glasses eye protection for laser welding machine OPT/IPL beauty

Wavelength: 200 nanometers - 2000 nanometers, wide spectrum protection, blocks ultraviolet rays, blue, red, and infrared, optical density: OD 4+; visible light transmittance: 15%, enhances green laser line or beam in daylight, approved by ANSI Z87.1 standard, compatible with laser light 405 nanometers, 445 nanometers, 450 nanometers, 650 nanometers, etc., for laser welding and cutting, and laser cosmetic treatment, designed according to facial contours, with three adjustable levels for expansion and contraction