Sunglasses, like glasses, are mainly composed of two parts. The difference is the material of the frame and the material of the lens. As far as the frame is concerned, there is no particular differenc...
Many friends who wear glasses will encounter the problem of choice. After optometry, some optometrists recommend wearing glass lenses, and some recommend wearing resin lenses. How should consumers cho...
The difference between polarizers and sunglasses: different definitions, different functions, different principles, different materials, different applications, different degrees of protection, and di...
What is the difference between optical glass and ordinary glass? In optics, glass and lenses are commonly used components or consumables for lenses, prisms, mirrors, windows, etc. So what is the di...
Lens material classification Glass lenses include optical glass lenses and high-refractive-index lenses (usually called ultra-thin sheets), which have high hardness and good wear resistance. Genera...
1. It is best to use a small soft brush to wash with clean water to remove the dirt in the seam. When wiping the lenses, use the glasses cloth to wipe in one direction, do not rotate in circles. 2....
1. Different colors: the surface of the functional lens is light yellow, and the color of the color-changing lens is pink, light purple, light blue, green lens, yellow lens, and gray lens; ordinary le...
Dyeing principle of resin lens Resin lenses can withstand high temperatures up to 150°C. When the temperature is 80-90 ℃, the resin lens is heated, the molecular gap expands, and the dye particles ...