Method for producing fluorophosphate optical glass, and method for producing optical element
    106.
    发明专利
    Method for producing fluorophosphate optical glass, and method for producing optical element 有权
    用于生产氟磷酸盐光学玻璃的方法和用于生产光学元件的方法

    公开(公告)号:JP2012091950A

    公开(公告)日:2012-05-17

    申请号:JP2010239174

    申请日:2010-10-26

    Inventor: IKENISHI MIKIO

    CPC classification number: C03C3/247 C03B19/02 C03B2201/70

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing fluorophosphate optical glass by melting a glass raw material, clarifying and homogenizing the molten glass and quenching, where bubbles are not generated in the glass even if the glass is flown from a clarifying tank that is set to a high temperature to a working tank that is set to a low temperature.SOLUTION: The content of Fe in terms of FeOand the content of Cu in terms of CuO are controlled so that the total of the contents of Fe and Cu is 20 ppm or more, and the obtained fluorophosphate optical glass has such a transmittance property that the internal transmittance in terms of a thickness of 10 mm becomes 98% or more in a wavelength region at least from 400 to 500 nm.

    Abstract translation: 要解决的问题:提供一种通过熔化玻璃原料来生产氟磷酸盐光学玻璃的方法,对玻璃进行澄清和均化,并且即使玻璃从澄清的玻璃中流出,也不会在玻璃中产生气泡 罐被设置为高温到设定为低温的工作罐。

    解决方案:Fe的含量以Fe 2 O 3 计,Cu的含量以CuO计为 控制使得Fe和Cu的总含量为20ppm以上,所得到的氟磷酸盐光学玻璃具有透过率,使得在10mm厚度下的内部透射率在波长区域中为98%以上 至少400-500nm。 版权所有(C)2012,JPO&INPIT

Patent Agency Ranking