| 摘要 |
PROBLEM TO BE SOLVED: To provide a UV absorbing reflection mirror base plate having an excellent UV absorbing characteristic, and to provide a reflection mirror using the UV absorbing reflection mirror base plate. SOLUTION: The reflection mirror having the UV absorbing characteristic is provided by containing Ti and Ce in aluminosilicate glass having excellent heat resistance and thermal shock resistance. For example, in regard to the UV absorbing reflection mirror base plate, when Ti is expressed in terms of TiO<SB>2</SB>and Ce is expressed in terms of CeO<SB>2</SB>in the aluminosilicate glass, the respective contents satisfy the range expressed by the following relations: TiO<SB>2</SB>wt.%≥-7×CeO<SB>2</SB>wt.%+3.5, therein TiO<SB>2</SB>wt.%≥0, CeO<SB>2</SB>wt.%≥0. COPYRIGHT: (C)2008,JPO&INPIT
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