Magnifying Glasses - glass magnifying glass
anti reflectivecoating中文
Great for driving, particularly at night.NeverGlare Advantage® coating can help you see more clearly when driving because it can reduce the glare of oncoming headlights, lighted signs and other visual challenges. The anti-reflective coating can help block glare at sunrise and sunset, as well.
Anti reflectiveglasses meaning
Abbe number is the index used to express the dispersion ability of transparent media. Generally speaking, the greater the refractive index of the medium, the more serious the dispersion, and the smaller the Abbe number; conversely, the smaller the refractive index of the medium, the less dispersion, the larger the Abbe number. Abbe number is commonly used in the lens industry and is one of the reference factors for purchasing lenses. The Abbe number of optical lens materials for the eye is generally between 30 and 60.
When people choose prescription eyeglasses, they are more concerned about which material of lens has a higher refractive index and thinner lenses, which are lighter and more beautiful. But when selecting prescription glasses, you should focus on the refractive index and consider the Abbe number of the lenses simultaneously.
anti-reflective coating是什么
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Therefore, when you choose a pair of prescription glasses, if you are more expecting the lenses to be comfortable and clear to wear, you must take into account the prescription values, refractive index, and Abbe number of the lenses to achieve a good match between the three, and not just pursue one aspect and ignore the other two, or it will lead to other problems.
Minimize eye strain.If you spend a lot of time staring at your computer screen, tablet or phone, NeverGlare Advantage® coating has a blue light-blocking feature that can help reduce eye fatigue and strain, so that you can be more productive.