A titanium-containing quartz glass excellent in ultraviolet rays absorbency and a method for producing the same

• Main Authors: SHIMADA, ATSUSHI, KUMATA, TOMOICHI, ORIKASA, KATSUHIDE, TANAKA, MAKOTO, TARUKAWA, HIROMI
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2020
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

Provided is a titanium-containing quartz glass having excellent UV absorption, wherein the quartz glass absorbs ultraviolet rays having a wavelength of 250 nm or less, ozone generation-related adverse effects on the human body, etc., are prevented, a decrease in transmittance of the quartz glass in the range from near-ultraviolet to visible light due to being colored when irradiated with ultraviolet rays does not occur, absorption build-up or lamp burst-inducing deformation build-up, which is caused by a structural change in the quartz glass that occurs in the range of 200-300 nm when irradiated with ultraviolet rays, is suppressed, and a decrease in transmittance at intended wavelength ranges does not occur even when exposed to ultraviolet rays. The titanium-containing quartz glass having excellent UV absorption is colorless, wherein the average concentration of titanium is 10-500 ppm, the concentration of OH group is 10-350 ppm, each elemental concentration of Al, Li, Na, K, Ca, Mg, Fe, Ni, Cu, Cr, Mo, and