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 OPTICAL QUARTZ GLASS

Type  JGS1 JGS2 JGS3
Process CVD Oxy-Hydrogen Melting Electric melting
Bubble & Inclusion(mm2/100cm2 < 0.1
< 0.5
< 0.5
< 0.5
< 0.5
< 0.5
Striae Ⅰ-Ⅱ
Birefringence(nm/cm) 2-4
4-6
Ⅰ-Ⅱ
4-10
Ⅱ-Ⅲ
Fluorescence(Ex254nm) No StrongV-B StrongV-B
Hydroxyl(ppm) 1200 150 5
Impurity(ppm) 5 20-40 40-50
Transmittance%(10mm) 200nm 87 27 7
300-800nm 91 90 90
2.5-3.5μm / / > 80 
Attenuation(Db/m) 325nm 0.13 0.7 /
442nm 0.04 0.04 /
Radiation γ 105Rad
T%
325nm 91 72 63
442nm 92 82 56
γ 106Rad
T%
325nm 91 52 21
442nm 91 63 11
Application UV windows, UV lens, UV prisms, photomask substrate High temperature windows semiconductor
IR windows, IR lens, IR prisms

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China Building Materials Academy      Quartz & Special Glasses Institute

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