Understand the differences between various optical glass materials.

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Aspheric and spherical lenses

Lenses are tools that aid people in the ability to see. There are two types of lenses–spherical lens and aspheric lens. For example, spherical lenses are flat from the front like a window. This means that their surface is polished and planar. That is, one side of the lenses is curved, while on aspheric lenses both the front and the back are curved, looking a little like a dish. Both types of lenses are used to correct vision problems, but there are some differences between the two that you should know about. 

When we say spherical lens, you can think of it like it has a same curve all throughout the lense. That makes them relatively simple to produce, and a reason that so many people use them. Aspherical lenses, on the other hand, are a whole different story. They have a unique and more intricate polynomial curve that varies across the lens. As a result, the production of lens Spherical from NOAIDA requires advanced techniques. This additional work is one reason aspheric lenses often have a higher price than their spherical counterparts.  

How aspheric lenses can improve vision quality?

Aspheric lenses, probably the most familiar type, are made to mimic the holistic shape of the eye more accurately. It is especially key to their ability to correct more vision issues. One of the most common problems is high astigmatism, for example. That is because the shape of the eyeball is more of a football than a basketball, and which can make the vision difficult. Aspheric lenses are more effective for correcting astigmatism due to the unique proprieties of their surface. Plus aspheric lenses minimize distortion, which means they create clearer-looking images. NOAIDA Spherical lenses may not work as well here (in profile), though, so this is especially handy.  

Why choose NOAIDA Aspheric and spherical lenses?

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