Optical glass and optical element
An optical glass and light transmittance technology, applied in the fields of glass preforms, optical components and optical instruments, can solve the problems of transition metal ion impurities entering glass, high viscosity of glass at high temperature, and high viscosity of Pyrex glass.
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[0096]
[0097]In order to further clearly explain and illustrate the technical solution of the present invention, the following non-limiting examples are provided.
[0098]In this example, the optical glass having the composition shown in Table 2 to Table 3 was obtained by using the above-mentioned manufacturing method of optical glass.In addition, the characteristics of each glass were measured by the test method described in the present invention, and the measurement results are shown in Tables 2 to 3.
[0099]Table 2.
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[0101]
[0102]table 3.
[0103]
[0104]
[0105]
[0106]The glass obtained in Examples 1 to 20 of the optical glass was formed by means of a grinding process, or a press molding method such as hot press molding and precision press molding to produce concave meniscus lenses, convex meniscus lenses, and biconvex lenses, Bi-concave lenses, plano-convex lenses, plano-concave lenses, and other prefabricated lenses, prisms, etc.
[0107]
[0108]Annealing the preforms obtained in the above ex...
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