Metal material
peculiarity
Titanium alloy: with light weight, high strength, corrosion resistance, no allergic reaction and other advantages, is a common material for high-end spectacle frames. It ...
In modern society, glasses are not only a visual correction tool, but also a perfect combination of fashion and function. With the progress of science and technology, color-changing lenses, as a hi...
These 6 steps are indispensable
Recently, many foreign friends have asked how to open an optical shop and how to reduce cost. For newbies, most of them just heard that the optical shop is more pro...
In the discussion of “What is the optical refractive index of an eye lens?” When it comes to this problem, we first need to understand the physical concept of optical refractive index, ...
Wear properly and care for the condition
Breathability and corneal health: Modern contact lens materials in breathability and other aspects have been greatly improved, as long as the choice of qual...
eyeglass
Optical property
Clarity: Quality sunglasses lenses at any Angle to see the object should be clear, no deformation, no double shadow. You can rotate the lens slightly by observing distant ...
