Patent ID: 9725351
Date: 2017-08-08
CPC Classifications: C03B

Claim:
1. A method of forming an opaque quartz glass component, the method comprising: (a) providing a starting preform made of quartz glass, the starting perform having a direct spectral transmission of approximately 0.1 to 1% in a wavelength range of λ=190 nm to λ=4990 nm at a wall thickness of 3 mm and a diffuse reflectance of at least 60% in a wavelength range of λ=190 nm to λ=2500 nm and a density of at least 2.15 g/cm (b) heating at least a portion of the starting preform to a predetermined temperature at which the quartz glass has a viscosity in a range of 10×10 (c) deforming at least a portion of the heated preform at the predetermined temperature to change at least one of a shape and dimension(s) of the heated preform in order to form the opaque quartz glass component, the opaque quartz glass component having a direct spectral transmission of approximately 0.2 to 3% in a wavelength range of λ=190 nm to λ=4990 nm at a wall thickness of 3 mm and a diffuse reflectance of at least 60% in a wavelength range of λ=190 nm to λ=2500 nm.