SILICOBORATE AND BOROSILICATE GLASSES WITH HIGH REFRACTIVE INDEX AND LOW DENSITY

    公开(公告)号:US20220073414A1

    公开(公告)日:2022-03-10

    申请号:US17398541

    申请日:2021-08-10

    Abstract: Glasses containing silicon dioxide (SiO2) and/or boron oxide (B2O3) as glass formers and having a refractive index nd of greater than or equal to 1.9, as measured at 587.56 nm, and a density of less than or equal to 5.5 g/cm3, as measured at 25° C., are provided. Optionally, the glasses may be characterized by a high transmittance in the visible and near-ultraviolet (near-UV) range of the electromagnetic spectrum and/or good glass forming ability.

    CHEMICALLY DURABLE ALUMINOSILICATE GLASS COMPOSITIONS AND GLASS ARTICLES FORMED THEREFROM

    公开(公告)号:US20200290920A1

    公开(公告)日:2020-09-17

    申请号:US16809641

    申请日:2020-03-05

    Abstract: In embodiments, a glass composition may include: greater than or equal to 71 mol. % and less than or equal to 83 mol. % SiO2; greater than or equal to 1 mol. % and less than or equal to 11 mol. % Al2O3; greater than or equal to 5 mol. % and less than or equal to 18 mol. % alkali oxide, the alkali oxide comprising greater than 3 mol. % Li2O and at least one of Na2O and K2O; greater than or equal to 1 mol. % and less than or equal to 8 mol. % alkaline earth oxide, the alkaline earth oxide comprising MgO and at least one of CaO, BaO, and SrO; and at least one of TiO2, ZrO2, HfO2, La2O3 and Y2O3, wherein TiO2+ZrO2+HfO2+La2O3+Y2O3 is greater than 0 mol. % and less than or equal to 6 mol. % and Al2O3+TiO2+ZrO2+HfO2+La2O3+Y2O3 is greater than or equal to 2 mol. % and less than or equal to 12 mol. %.

    OPTICAL BOROALUMINATE GLASSES
    28.
    发明申请

    公开(公告)号:US20190218136A1

    公开(公告)日:2019-07-18

    申请号:US16243506

    申请日:2019-01-09

    Abstract: An optical boroaluminate glass article comprises: from greater than or equal to 10.0 mol % to less than or equal to 30.0 mol % Al2O3; from greater than or equal to 10.0 mol % to less than or equal to 55.0 mol % CaO; from greater than or equal to 10.0 mol % to less than or equal to 25.0 mol % B2O3; from greater than or equal to 0.0 mol % to less than or equal to 30.0 mol % SiO2; and from greater than or equal to 1.0 mol % to less than or equal to 20.0 mol % refractive index raising components. The optical boroaluminate glass article has a refractive index of the glass article, measured at 589.3 nm, of greater than or equal to 1.62, and a density of less than or equal to 4.00 g/cm3.

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