Development and Application of Ultra-low Expansion Glass
Ultra-low expansion glass has a near-zero coefficient of thermal expansion in the room temperature range and is used as components of astronomical telescope mirrors,optical elements of precision optical path systems and resonant cavities of laser gyroscopes.It plays an important role in space optics,precision measurement,photolithography and other fields.In this paper,the development history of ultra-low expansion glass at home and abroad is introduced,and the structure,properties,preparation methods and application scenarios of ultra-low expansion glass-ceramics and ultra-low expansion synthetic quartz glass are systematically described,which provides a reference for the research and development of ultra-low expansion glass.
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