A glass that changes the direction of light propagation and changes 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.
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