| 摘要 |
PROBLEM TO BE SOLVED: To provide a visibility correction filter glass used for the visibility correction of a solid-state image sensing device and capable of reducing the disorder of a photographed image such as contour blur caused by near ultraviolet chromatic aberration of a lens system. SOLUTION: Fe<SB>2</SB>O<SB>3</SB>of 0.6-5 pts.mass and Sb<SB>2</SB>O<SB>3</SB>of 0.1-5 pts.mass are incorporated to 100 pts.wt. base glass containing CuO and comprising by mass 10-60% P<SB>2</SB>O<SB>5</SB>, 0-20% AlF<SB>3</SB>, 1-30% RF (R is at least one kind of Li, Na, K) and 10-75% R'F<SB>2</SB>(R' is at least one kind of Mg, Ca, Sr and Ba) (where, total fluoride is replaceable up to 70% by oxide). COPYRIGHT: (C)2008,JPO&INPIT
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