03 Jun 2019 Optical windows are made of optical grade glass with plane parallel surfaces.They are used to admit light into an optical system and to protect it from dirt and moisture.
The window is a parallel flat panel that does not change the magnification of the system.The substrate material includes various optical glasses,ultraviolet fused silica,infrared fused sillica,and crystal materials such as CaF2,MgF2,ZnSe,Ge,Si,and various optical coatings such as antireflection film,high reflection film,spectroscopic film,and metal film.Widely used in optical systems,usually as a protective device between sophisticated eletronic equipment and environment.
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