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    Reproduction of X-ray images with a photostimulable phosphor
    2.
    发明公开
    Reproduction of X-ray images with a photostimulable phosphor 失效
    复制vonRöntgenbilderndurch photoanregbaren磷光体。

    公开(公告)号：EP0304121A1

    公开(公告)日：1989-02-22

    申请号：EP88201705.6

    申请日：1988-08-09

    申请人： AGFA-GEVAERT naamloze vennootschap

    发明人： Tecotzky, Melvin ,  Blasse, George ,  Meijerink, Andries ,  Terrell, David Richard ,  Struye, Luc André

    IPC分类号： C09K11/86 ,  G21K4/00

    CPC分类号： G21K4/00 ,  C09K11/7721 ,  C09K11/7734 ,  C09K11/7774 ,  C09K11/7792

    摘要： A method for recording and reproducing an X-ray image is provided which method comprises the steps of :

    (1)causing a photostimulable phosphor to absorb image-wise or pattern-wise modulated X-rays,
    (2) photostimulating said phosphor with stimulating electromagnetic radiation selected from visible light and infrared light to release from the phosphor in accordance with the absorbed X-rays electromagnetic radiation different in wavelength characteristic from the radiation used in the photo-stimulation, and
    (3) detecting said light emitted by photostimulation,wherein said phosphor is a halosilicate containing as host metal at least one member selected from the group consisting of Ca, Sr, Ba, Mg, Cd, Zn and Pb, as halogen at least one member selected from the group consisting of Cl, Br and I, and comprising as dopant(s) Eu²⁺ and/or Ce³⁺.

    摘要翻译： 提供了一种用于记录和再现X射线图像的方法，该方法包括以下步骤：（1）使可光激发的荧光体吸收图像或图案调制的X射线，（2）用刺激电磁法对所述荧光体进行光刺激 从可见光和红外光中选择的辐射根据吸收的与光刺激中使用的辐射波长特性不同的X射线电磁辐射从磷光体中释放，以及（3）检测由光刺激发射的所述光，其中所述 荧光体是含有选自Ca，Sr，Ba，Mg，Cd，Zn和Pb中的至少一种的作为主体金属的卤硅酸，作为卤素，选自Cl，Br和I中的至少一种， 并且包含作为掺杂剂Eu 2+和/或Ce 3+的掺杂剂。 C

    Device for accurately focussing a laser beam
    4.
    发明公开
    Device for accurately focussing a laser beam 失效
    装置用于精确地聚焦的激光束。

    公开(公告)号：EP0157020A1

    公开(公告)日：1985-10-09

    申请号：EP84200476.4

    申请日：1984-04-05

    申请人： AGFA-GEVAERT naamloze vennootschap

    发明人： Struye, Luc André

    IPC分类号： G11B7/09 ,  G02B7/11

    CPC分类号： G11B7/0908 ,  G11B7/0909

    摘要： Device for correcting deviations upon focussing a laser beam, which comprises electronic means, among which a quadrant detector (9a, 9b, 9c, 9d), for forming with the output signals of said quadrant detector a correction signal -K i V c H c /Σ (18), which is added (19) to the focussing signal (A + C) - (B + D) formed in circuit 14, A, B, C and D being the output signals of the quadrant detector (9a, 9b, 9c, 9d),

    V e = (A + B) - (C + D) formed in circuit 15;
    H c = (A + D) - (B + C) formed in circuit 17;
    Σ = A + B + C + D formed in circuit 16 and
    K, being a constant.