Glass is a widely used inorganic non-metallic material with a wide range of applications. It can be used in construction, daily use, art, instrumentation and other fields.
Optical glass can change the direction of light propagation and can change the relative spectral distribution of ultraviolet, visible or infrared light. Narrow optical glass refers to colorless optical glass; generalized optical glass also includes colored optical glass, laser glass, quartz optical glass, radiation resistant glass, ultraviolet infrared optical glass, fiber optic glass, acousto-optic glass, magneto-optical glass and photochromism. glass. Optical glass can be used to make lenses, prisms, mirrors, windows, etc. in optical instruments. Components made of optical glass are key components in optical instruments.
An amorphous (glassy) optical dielectric material that transmits light. It can be used to make various optical components such as prisms, lenses, filters, etc., and the direction of propagation, phase and intensity can be changed after the light passes. According to different requirements, optical glass can be divided into three categories:
1 colorless optical glass - almost completely transparent in the wide and visible bands of visible and near infrared, is the optical glass with a large amount of use
2 radiation-resistant optical glass - has the properties of colorless optical glass, and can basically not change the performance under radioactive irradiation. The optical instrument used for gamma irradiation has the same variety and grade as the colorless optical glass.
3 Colored optical glass - has specific absorption or transmission properties for certain wavelengths of light. Also known as filter glass, there are more than 100 varieties. Color filters are selective for absorption in certain colors. Neutral filters absorb the same amount of light at all wavelengths, but reduce the intensity of the beam without changing its color.
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