Synthetic quartz glass and process for producing it

Details Synthetic quartz glass and process for producing it Synthetic quartz glass and process for producing it

2006-04-04

2006-04-04

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C065S397000, C065S399000, C065S414000, C065S424000

Reexamination Certificate

active

07022633

ABSTRACT:
A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm−1(I2250) to the scattering peak intensity of 800 cm−1(I800), i.e. I2250/I800, of at most 1×10−4in the laser Raman spectrum, and which has an absorption coefficient of light of 245 nm of at most 2×10−3cm−1.

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