The role of protective glasses is closely related to the lenses it uses. There are many protective glasses lenses and coatings. Next, it's better to follow Xiaobian to understand.
Special lenses for protective glasses:
High refractive index lens: high refractive index lens has stronger refractive power, and the lens is lighter and thinner. When the diopter exceeds 4D, this lens is recommended.
Color changing lens: color changing lens is a special lens for display, with anti glare function. Shading filter materials with light transmittance less than 80% are not suitable for use at dawn, dusk or night.
Protective glasses and ordinary lenses:
Transparent lens: it has high impact resistance and 100% UV protection.
Amber Lens: light yellow can filter the blue light in the visible light and improve the contrast.
Light Amber Lens: human eyes feel very comfortable. It can improve the contrast, especially the short band beam range.
Gray Lens: the gray lens is a sunglasses lens, which can filter the sunlight and strong light, and does not affect the identification of bright colors.
Brown Lens: provide glare protection and increase general protection.
Orange lens: Orange lens can protect workers' glasses and can be worn for a long time.
UV Green Lens: it can filter the beam of visible light and provide glare protection, which meets the standards of en166 and en170.
Blue lens: light blue makes the eyes feel comfortable and relaxed. It is especially suitable for some workplaces with concentrated eye requirements.
Welding green lens: filter all beams generated by gas welding, such as UV beam, IR beam and visible glare. The protection level is determined according to different working environment. All welding protective glasses lenses are made of polycarbonate, and the outer layer is coated. Compared with glass lenses and film coated lenses, they have better impact resistance, minimize the risk of welding sparks, and meet the standards of en166 and en170.