Q-BAIHE 400nm-450nm Violet/blue Laser Protection Goggles Safety Glasses Laser Goggles 400-450nm Protection Goggles Optical Density: &gt;5.0, (OD +4, OD +5) Protection wavelength range : 400nm-450nm Visible light transmittance: &gt;55% Laser Protection Goggles for 450nm Blue and 405nm Violet-Blue Lasers.