Glasses lenses mainly include six categories, namely: polarized lenses, tinted lenses, progressive lenses, color-changing lenses, anti-blue lenses and anti-fatigue lenses. Different types of glasses lenses have different roles. The following is the introduction of various lenses:
1. Polarized lenses
Polarizers are lenses manufactured according to the principle of polarization of light. They are used to eliminate and filter the scattered light in the beam, so that the light can be input to the visual image of the eye on the transmission axis of the normal track, so that the field of vision is clear and natural. Used for driving, fishing, skiing, etc.
2. Color changing lenses
The color-changing lens is made of optical glass containing silver halide microcrystals. According to the principle of the reversible reaction between light and color, it can be quickly darkened under sunlight and ultraviolet rays, completely absorb ultraviolet rays, and neutrally absorb visible light; return to the dark, Can quickly restore colorless and transparent. In other words, the lens has no color indoors, and the lens becomes colored when exposed to strong light outdoors.
3. Anti-blue light lens
Anti-Blu-ray glasses have been adopted by many people as a protective measure for office computers. In addition to filtering ultraviolet rays, these glasses also specifically block high-energy short-wave blue light so that it cannot damage the most important macular area of the human eye. It has different penetration and absorption functions for different light, and can resist reflection and glare. After the user wears it, the vision is clearly clear and natural, which will keep you away from visual fatigue.
It is especially suitable for computer workers, people watching TV, playing electronic game consoles, etc. It can effectively prevent harmful blue light from damaging the eyes and keep the eyesight forever.
4. Anti-fatigue lenses
Anti-fatigue lenses generally add a +50~+60 degree adjustment load on the lens based on the principle of a similar progressive lens, optimize the myopia luminosity to restore the micro fluctuations to normal, restore the balance of the eyeglass adjustment system, and obtain the function of fatigue-free. For the complete “decompression” of the eyes.
It is mainly suitable for the following five types of people: school students with high learning pressure; young office people who work close for a long time; office people who use computers for a long time; myopia glasses wearers with early presbyopia symptoms; myopia degree-800 degrees The following crowd.
5. Stained lenses
Prevent the strong irritation of sunlight from causing damage to the eyes The lenses are dyed in different colors through a specific process to meet different visual environment requirements. Stained lenses are not suitable for indoor use because they will affect the visual effect. Generally, the color selection can be determined according to the color palette provided by the manufacturer, personal preference and use environment.
6. Progressive lenses
The progressive lens is a multi-focal lens, which eliminates the fatigue of the eyeballs having to constantly adjust the focal length when using a dual-focal lens, and there is no obvious dividing line between the two focal lengths. Progressive lenses are mainly divided into adult progressive lenses and youth progressive lenses.