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    • 3. 发明申请
    • NITRIDE-BASED RED PHOSPHORS
    • 基于硝酸的红色磷光体
    • US20090283721A1
    • 2009-11-19
    • US12250400
    • 2008-10-13
    • Shengfeng LiuDejie TaoXianglong YuanYi-Qun Li
    • Shengfeng LiuDejie TaoXianglong YuanYi-Qun Li
    • C09K11/85
    • C09K11/0883C09K11/7734Y02B20/181
    • Embodiments of the present invention are directed to the fluorescence of a nitride-based deep red phosphor having at least one of the following novel features: 1) an oxygen content less than about 2 percent by weight, and 2) a halogen content. Such phosphors are particularly useful in the white light illumination industry, which utilizes the so-called “white LED.” The selection and use of a rare earth halide as a raw material source of not only the activator for the phosphor, but also the halogen, is a key feature of the present embodiments. The present phosphors have the general formula MaMbBC(N,D):Eu2+, where Ma is a divalent alkaline earth metal such as Mg, Ca, Sr, Ba; Mb is a trivalent metal such as Al, Ga, Bi, Y, La, and Sm; and Mc is a tetravalent element such as Si, Ge, P, and B; N is nitrogen, and D is a halogen such as F, Cl, or Br. An exemplary compound is CaAlSi(N1-xFx): Eu2+.
    • 本发明的实施方案涉及具有以下新颖特征中的至少一个的氮化物基深红色荧光体的荧光:1)氧含量小于约2重量%,和2)卤素含量。 这种荧光体在白光照明工业中是特别有用的,其利用了所谓的“白光LED”。 稀土卤化物作为磷光体的活化剂以及卤素的原料来源的选择和使用是本实施方案的关键特征。 本发明的荧光体具有通式MaMbBC(N,D):Eu2 +,其中Ma是Mg,Ca,Sr,Ba等二价碱土金属; Mb是诸如Al,Ga,Bi,Y,La和Sm的三价金属; 并且Mc是四价元素如Si,Ge,P和B; N是氮,D是卤素如F,Cl或Br。 示例性化合物是CaAlSi(N1-xFx):Eu2 +。
    • 6. 发明申请
    • Camera-based x-ray digital image detector
    • 基于相机的X射线数字图像检测器
    • US20080197290A1
    • 2008-08-21
    • US11999729
    • 2007-12-06
    • Xianglong YuanShifan ChengYi-Qun Li
    • Xianglong YuanShifan ChengYi-Qun Li
    • G01T1/20
    • G01T1/2018
    • Disclosed herein are camera-based x-ray digital image detectors that contain an assembly of a scintillator screen, a wide-angle optical lens or fisheye lens, and a digital image sensor. Images formed by x-ray radiation on the scintillator screen are projected onto a much smaller area image sensor through a fisheye or super-wide-angle optical lens, hence forming a highly distorted image thereon. Transparent lead-contained glasses or plastics are utilized to shield image sensor from x-ray damage. Imaging distortion and light falloff caused by the lens optics are corrected by software algorithms. Sub-millimeter resolution may be achieved with reduced design complexity and substantially lower manufacturing costs.
    • 本文公开了包含闪烁体屏幕,广角光学透镜或鱼眼镜头和数字图像传感器的组件的基于摄像机的X射线数字图像检测器。 通过X射线辐射在闪烁体屏幕上形成的图像通过鱼眼或超广角光学透镜投影到更小的区域图像传感器上,从而在其上形成高度失真的图像。 使用透明的含铅玻璃或塑料来屏蔽图像传感器免受x射线损伤。 由镜头光学造成的成像失真和光衰减由软件算法进行校正。 可以实现亚毫米分辨率,降低设计复杂度并显着降低制造成本。
    • 7. 发明授权
    • Camera-based x-ray digital image detector
    • 基于相机的X射线数字图像检测器
    • US07557356B2
    • 2009-07-07
    • US11999729
    • 2007-12-06
    • Xianglong YuanShifan ChengYi-Qun Li
    • Xianglong YuanShifan ChengYi-Qun Li
    • G01T1/20
    • G01T1/2018
    • A camera-based x-ray digital image detectors can contain an assembly of a scintillator screen, a wide-angle optical lens or fisheye lens, and a digital image sensor. Images formed by x-ray radiation on the scintillator screen can be projected onto a much smaller area image sensor through a fisheye or super-wide-angle optical lens, hence forming a highly distorted image thereon. Transparent lead-contained glasses or plastics can be utilized to shield image sensor from x-ray damage. Imaging distortion and light falloff caused by the lens optics can be corrected by software algorithms. Sub-millimeter resolution may be achieved with reduced design complexity and substantially lower manufacturing costs.
    • 基于相机的X射线数字图像检测器可以包含闪烁体屏幕,广角光学透镜或鱼眼镜头以及数字图像传感器的组件。 通过X射线辐射在闪烁体屏幕上形成的图像可以通过鱼眼或超广角光学透镜投射到更小的区域图像传感器上,从而在其上形成高度失真的图像。 透明的含铅玻璃或塑料可用于屏蔽图像传感器免受x射线损伤。 镜头光学造成的成像畸变和光衰减可以通过软件算法进行校正。 可以实现亚毫米分辨率,降低设计复杂度并显着降低制造成本。