| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter glass which is excellent in chemical durability, is good in absorption characteristics at the wavelength of 700 nm even in a thin plate having the thickness of about 0.3 mm, has high thermal shock resistance and is easy in thinning process. SOLUTION: This filter glass is produced by adding CuO of 7.5-16 pts.wt. to 100 pts.wt. of a base glass comprising, by mass, 46-70% P<SB>2</SB>O<SB>5</SB>, 1-50% (MgF<SB>2</SB>+CaF<SB>2</SB>+SrF<SB>2</SB>+BaF<SB>2</SB>), 0-25% (LiF+NaF+KF) and 0.2-20% AlF<SB>3</SB>(provided that F is 0.5-32% and O is 26-54%). COPYRIGHT: (C)2006,JPO&NCIPI
|
