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What is a spherical lens? What are aspheric lenses? What's the difference between the two? Why would you recommend aspheric lenses to me? Let's just talk about the difference between the two. What...
1. Ice wire Ice filament is also called rayon, viscose filament and viscose filament. The cellulose content of iced silk is over 99.5%. Cotton fibers and wood fibers in 95-97% ice silk fat and wax...
Cautions for the use of bike mirrors: 1. The glasses are not worn out, they are all rubbed and crushed. It's dirty to try not to wipe glasses without wiping them. If you wipe them with a lens clot...
The metal materials used for spectacle frames are copper alloy, nickel alloy and precious metal. Request certain hardness, softness, elasticity, wear resistance, corrosion resistance, light weight,...
Frameless spectacle frame is what processing technology is made out, usually we see the spectacles have spectacle frames. If you're curious about this, take a look at the glasses manufacturer's int...
What are optical spectacles? Optical spectacles are spectacles specially designed to correct myopia, hyperopia or astigmatism in patients with refractive errors. Eliminate visual fatigue, protect a...
As for lenses, it is not uncommon for glasses factories to trust professional assistants. Every day, what they say in their mouth and what they hold in their hands are "lenses". Speaking of lens pa...
