Patent ID: 7700682

Claim:
A glass filler in the form of fiber, milled fiber, powder or flakes for a polycarbonate resin, which comprises, as inorganic components in the entire glass filler, from 50 to 60 mass % of silicon dioxide (SiO 2 ), from 7 to 9.9 mass % of aluminum oxide (Al 2 O 3 ), from 10 to 20 mass % of calcium oxide (CaO), from 0 to 5 mass % of magnesium oxide (MgO), from 3 to 6 mass % of zirconium oxide (ZrO 2 ), from 0 to 10 mass % of zinc oxide (ZnO), from 0 to 10 mass % of strontium oxide (SrO), from 7 to 14 mass % of barium oxide (BaO), from 0 to 2 mass % of lithium oxide (Li 2 O), from 0 to 2 mass % of sodium oxide (Na 2 O), and from 0 to 2 mass % of potassium oxide (K 2 O), provided that: the total content of the lithium oxide (Li 2 O), the sodium oxide (Na 2 O) and the potassium oxide (K 2 O) is from 0 to 1.5 mass % based on the entire glass filler, the total content of titanium oxide (TiO 2 ) is 0.1 mass % or less, the total content of boron oxide (B 2 O 3 ) is 0.1 mass % or less, the total content of the calcium oxide (CaO, the zinc oxide (ZnO), the strontium oxide (SrO) and the barium oxide (BaO) is from 25 to 35 mass %, the total content of the SiO 2 and the Al 2 O 3 is from 57 to 67 mass %, and the glass has a refractive index of from 1.581 to 1.587 to a light with a wavelength of 589 nm.