How do Optical lens manufacturer make optical lenses? (a)
First, the origin of Optical lens manufacturer
The lenses used by Optical lens manufacturer are the early glass used to make lenses, the knobs on ordinary window glass or wine bottles, shaped like "crowns," from which the name crown glass or coronal glass derives. The glass in those days was very uneven and foamy. In addition to corona glass, there is another type of flint glass that contains more lead. Around 1790, Pierre Louis Junard, a Frenchman, discovered that mixing glass sauce could make glass with a uniform texture. In 1884, Ernst Abbe and Otto Schott founded Schott Glaswerke AG in Jena, Germany. Within a few years, dozens of optical glasses were developed, among which the invention of barium corona glass with high refractive index was one of the important achievements of Schott Glaswerke.
Second, cold working process of optical lens
1. Optical lens manufacturer mill in order to remove the uneven bubbles and impurities on the surface of the lens, (about 0.05-0.08) for forming.
2, then the Optical lens manufacturer need to carry out the fine grinding process, milling out the lens will be its destruction layer to eliminate. Divide by, fix R.
3. The Optical lens manufacturer conducts the polishing process again, which is to polish the finely ground lens again. This process is mainly to make the appearance better.
4, followed by cleaning, polishing the lens after the surface of the polishing powder to clean to prevent acrylic.
5. Then edge grinding is to grind the original outer diameter of the lens to the specified outer diameter.
6. Then the coating is a layer or layers of colored film or other film that needs to be coated on the surface of the lens.
7, then the ink is to have the lens to prevent reflection on its edge coated with a layer of black ink.
8. At the back is gluing, which combines two lenses with opposite R values and the same outer diameter material with glue.
