Patent ID: 6915665
Filing Date: 2005-07-12
Classification: C03B,C03C,G02B,G03F

Abstract:
1. A method of making an optical element fused silica glass, said method comprising the steps of: providing an optical element fused silica glass having a below 300 nm unbleached internal transmission T (%/cm), photolytically exposing said fused silica glass with a photonic exposure in a 193-300 nm wavelength range to provide a photolytically improved transmitting fused silica glass with a below 300 nm increased internal transmittance IN (%/cm) with IN−T=Δtransmittance (%/cm) and Δtransmittance ≧0.07, wherein the step of photolytically exposing said fused silica glass is performed before the fused silica glass is shared into an optical element.