What is blue film?
As the name implies, it uses optical films and new vacuum technologies to coat a layer of material on the surface of the lens to improve the ability of the lens to reflect light, so that the film or reflective color of the lens is blue.
What is green film?
In the same way, the color of the film or reflection of the lens is green.
What is the difference between these two layers?
Difference 1: Different light transmittance
In terms of light transmittance, blue-coated lenses are relatively weak. The light transmittance of green-coated lenses is relatively high among all coated lenses. The light transmittance of green-coated lenses can reach 98.6%, while the blue-coated lenses only reach 96.8%. . Compared with other coatings, the green film has a more advanced and complex film system, so the anti-reflection property will be wider and flatter, and the anti-reflection light point will be in the center of the visible spectrum.
Difference 2: Different security
Compared with green film lenses, blue film lenses cannot filter harmful glare, and their anti-ultraviolet performance is relatively low. Unlike green film lenses, it can prevent 100% ultraviolet, infrared and various harmful glare from damaging the eyes, which is more harmful to the eyes. Small. Therefore, in terms of safety performance, green-coated lenses are superior to blue-coated lenses, which can not only prevent eye diseases such as macular degeneration and cataracts, but also truly prevent vision impairment and vision loss.
Difference 3: The wear resistance is different
The wear resistance of blue-coated lenses is much higher than that of green-coated lenses. At the same time, blue-coated lenses also have the function of preventing electromagnetic wave radiation such as computers, TVs, and mobile phones, and are more comprehensive in terms of eye protection performance.
Difference 4: Different comfort levels
When it comes to comfort, we naturally think of visual fatigue. So just talking about green film lenses, its biggest advantage is not only higher safety, but also better wearing comfort. This is because the green color is closer to nature, the green film layer is more in line with the physiological characteristics of the human eye, and the appearance is more beautiful. Green-coated lenses are also more natural to wear, especially for those who wear glasses for a long time; the green light has the effect of massaging the eyeballs, and it will not feel uncomfortable when worn for a long time, which can relieve eye fatigue and achieve eye care. purpose effect. Blue-coated lenses can easily cause eye fatigue if they are worn for a long time, so green-coated lenses are more comfortable to wear than blue-coated lenses.
