How to set lens groove style with a groover
How to set lens groove style with a groover...
How to use the portable fundus camera,
Do you now how to increase the success rate of shoot fundus image with portable fundus camera?...
How to use the differnent lenses in the trial lens set
Spheres : The curved surface forms a part of the spherical lens and the dioptric power on all axis positions is the same. After passing the lens, the light beam focuses in one point (or a virtual focus). Spherical lens includes concave lens （ - ） and conv...
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Smart tips of heating optical frames
The thinness of the frame material is the single most important factor in determining the proper heat setting for warming. The thinner material , the faster it will heat up . Lighter , thinner frames will heat and cool much faster than heavier , thicker f...
The differences between LE-300, LE-310P, LE-320P, LE-400, LE-420 and LE-520
Latested LE-520 with 3rd mainboard and new function of Lens sliding prevention, grinding wheel are same with LE-420....
What equipments are need if open an optical shop?
There are listed equipment below should be need if you will open an optical shop. You could also come to our website below to view product information on the phone. www.jhoptical.cn | www.jhoptical.com......
Control of dyeing method and dyeing effect
Artical about dyeing method,Control of dyeing effect, Dyeing principle of resin lens, Dyeing solution and dyeing apparatus, Fading agent: a chemical solvent that can fade dyed lenses.........
There are five common colors of dyeing lenses
There are five kinds of common dyeing lenses: pink, gray, green, brown and yellow. Different colors have different protective effects on our eyes....
Dyeing principle of resin lens
This artical mainly introduces the dyeing principle of resin lens and Dyeing solution and dyeing apparatus......