What are the raw materials for making optical glass
RELEASE TIME：2020/6/24 7:23:25SOURCE：CLICK：
Glass is an ancient building material. With the common development of modern society, the glass industry has produced functional glass, which makes the glass family continue to flourish.
Optical glass is a kind of glass that can change the direction of light propagation and the relative spectral distribution of ultraviolet, visible or infrared light. Optical glass makes the image of light required, so the quality of optical glass is also very high.
So, what is the raw material of optical glass?
Optical glass is mixed with oxides of silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium and so on according to specific formula, melted in high temperature in platinum crucible, stirred evenly with ultrasonic wave, and removed bubbles; then cooled slowly for a long time to avoid internal stress of glass block. The purity, transparency, uniformity, refractive index and dispersion index of the cooled glass block shall be tested by optical instrument to see if they meet the specifications. The qualified glass block is heated and forged to form optical lens hair embryo.
Due to its high refractive index, low dispersion and good chemical stability, rare earth can be used to produce optical glass for lenses of cameras, cameras, telescopes and other optical instruments. Optical glass can be used to make lenses, prisms, mirrors and windows in optical instruments. The components made of optical glass are the key components in optical instruments.