Invention Grant
US08283269B2 Solarization-resistant glass composition having a UV-cutoff with a definite transmittance gradient and radiating device for a weathering apparatus containing a glass of said composition
有权
具有具有确定的透射梯度的紫外线截止的耐晒玻璃组合物和用于包含所述组合物的玻璃的耐候装置的辐射装置
- Patent Title: Solarization-resistant glass composition having a UV-cutoff with a definite transmittance gradient and radiating device for a weathering apparatus containing a glass of said composition
- Patent Title (中): 具有具有确定的透射梯度的紫外线截止的耐晒玻璃组合物和用于包含所述组合物的玻璃的耐候装置的辐射装置
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Application No.: US12578863Application Date: 2009-10-14
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Publication No.: US08283269B2Publication Date: 2012-10-09
- Inventor: Joerg Hinrich Fechner , Franz Ott
- Applicant: Joerg Hinrich Fechner , Franz Ott
- Applicant Address: DE Mainz
- Assignee: Schott AG
- Current Assignee: Schott AG
- Current Assignee Address: DE Mainz
- Agent Michael J. Striker
- Priority: DE102008043317 20081030
- Main IPC: C03C3/091
- IPC: C03C3/091 ; C03C3/093 ; H01J17/16 ; H01J7/26
Abstract:
The borosilicate glass with improved solarization-resistance has a transmittance curve within an area bounded by respective curves defined by the corresponding equations τ=1.7·(λ−277) and τ=1.6·(λ−284) in a wavelength range of 283 nm to 325 nm. This glass has a composition, in wt. % based on oxide content, of: 55-82, SiO2; 10-20, B2O3; 1-10, Al2O3; 0-5, Li2O; 0-10, Na2O; 0-10, K2O; 0-10, ΣM2O; 0-5, MgO; 0-10, CaO; 0-5, SrO; 0-15, BaO; 0-15, ΣMO; 0-3, ZrO2; 0-5, ZnO; 0-2, CeO2; 0-3, WO3; 0-2, SnO2: 0-0.1, Fe2O3; 0.05-2, MoO3; 0-5, Bi2O3; 0-1, TiO2 and 0-5, oxides of selected rare earth and Group IVB to VIIIB elements. The transmittance is adjusted by varying the MoO3 content and if necessary the TiO2 and Bi2O3 content. The glass is especially suitable for use in a weathering apparatus.
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