When it comes to glass, I'm sure we are all very familiar with it, like our common day-to-day windows, glass cups, mirror lenses, glass balls, etc. are made of glass. Then if we talk about optical glass, I think there are a lot of people will be unfamiliar, optical glass relative to ordinary glass, with special and more stringent indicators. It is inseparable from the manufacture of optical instruments, such as telescopes, cameras, video cameras and other high-level optical instruments are made of optical glass lenses. Optical glass has a high degree of transparency and a certain quality, so it is now also very widely used. So, let's take a look at what are the main types of optical glass and their respective characteristics!
1. Colorless Optical Glass
Colorless optical glass has more stringent requirements for optical constants, with specificity. It is characterized by non-selective absorption and high transmittance. Colorless optical glass according to the size of the Abbe number can be divided into coronal glass and flint glass, and then according to the refractive index and dispersion coefficient, which it can also be divided into 16 small categories. Colorless optical glass is mostly used in telescopes, cameras, microscopes and so on.2. Tinted optical glass
Tinted optical glass is mainly used in the manufacture of filters, so it is also known as filter glass. It has a selective transmission of light absorption characteristics, if in accordance with the spectral characteristics, it can also be divided into absorption, cut-off type and neutral gray three categories.
3. Anti-irradiation optical glass
Anti-irradiation optical glass has a strong absorption of strong irradiation light, it can prevent y-rays and x-rays of irradiation and the absorption of slow neutrons and thermal neutrons, and is currently mainly used as a window material in the field of medicine and the nuclear industry.
4. Irradiation-resistant optical glass
Irradiation-resistant optical glass varieties and colorless optical glass is very similar, it is in a certain amount of y-rays and x-rays irradiation, the change in its light transmission rate fluctuations are very small, commonly used in the manufacture of some high-energy irradiation under the optical instruments and shielding, peep window.
5. Ultraviolet and infrared optical glass
Ultraviolet and infrared optical glass has a specific optical constants, its transmittance is higher, mainly used in the manufacture of ultraviolet and infrared optical instruments.
6. Optical quartz glass
Optical quartz glass has good performance, its coefficient of expansion is low, high mechanical strength and has the advantages of high temperature, often used in the manufacture of special requirements of prisms, lenses, mirrors, and windows.
Optical glass has a certain position in photoelectric technology, and secondly, it plays an important role in the physical and chemical worlds, the current development of optical glass in China is very rapid, I believe that its future will be bright.