Zerodur linear thermal expansion

The Zerodur glass-ceramic, whose coefficient of linear thermal expansion at room temperature can be kept at < 0.05 x 10 /K (Table 3.4-19), was especially developed for the production of large mirror blanks for astronomical telescopes. Zerodur has further applications in optomechanical precision components such as length standards, and mirror spacers in lasers. With... 

Table3.l -19 Coefficient of linear thermal expansion a, density, and elastic properties of Zerodur and Ceran glass-ceramics...

Figure 4-11 Linear thermal expansion as a function of temperature of Zerodur glass-ceramic (Zerodur information 1991).

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