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    OPTICAL CONVERTER
    1.
    发明公开
    OPTICAL CONVERTER 审中-公开

    公开(公告)号：EP3505503A1

    公开(公告)日：2019-07-03

    申请号：EP17210639.5

    申请日：2017-12-27

    申请人： SCHOTT AG

    发明人： ROZENBURG, Keith ,  LETZ, Martin ,  STÖHR, Ulrike ,  SEIDL, Albrecht

    IPC分类号： C04B38/00 ,  C09K11/00 ,  H01L33/50

    摘要： It is an object of the invention to provide an optical converter which has both a stable colour even at highest luminous powers and a high luminous efficiency. This object is solved by an optical converter (1) comprising a ceramic element (3), the ceramic element (3) being fluorescent so that light of a first wavelength is absorbed in the ceramic element (3) and fluorescent having longer wavelength light is emitted, the ceramic element comprising pores (5), the pores (5) being spatially irregularly distributed within the ceramic element (3), the distribution of the pores (5) within the ceramic element (1) being inhomogeneous so that the radial distribution function of the pore locations deviates from unity and has a maximum at a characteristic distance (7), the maximum having a value of at least 1.2.