公开(公告)号：US20030161441A1

公开(公告)日：2003-08-28

申请号：US09683895

申请日：2002-02-28

申请人： General Electric CRD

发明人： Ljubisa Dragoljub Stevanovic ,  Eugene George Olczak ,  Frank Jacob John Mueller ,  Dietmar Karl Sundermann

IPC分类号： A61B006/08

CPC分类号： G03B42/08

摘要： An X-ray localizer light system comprises: a long life X-ray localizer light source; an optical concentrator, the light source being situated at a first focal spot, the optical concentrator being configured for concentrating X-ray localizer light from the light source to a second focal spot; and an opaque shield having an aperture therein situated proximate to the second focal spot and being of such a geometrical shape so as to maximize light throughput while meeting light field edge contrast requirements. In another light system, the optical concentrator comprises a reflector comprising a quasi-ellipsoidal portion within which the light source is situated, a cylindrical portion situated between the quasi-ellipsoidal portion and the shield for reflecting stray light, a back reflector portion situated proximate to the shield, and a centrally-mounted portion situated between the aperture and the light source for directing back-reflected light in the direction of the aperture.

摘要翻译： X射线定位器光系统包括：长寿命X射线定位器光源; 所述光源位于第一焦斑处，所述光集中器被配置为将来自所述光源的X射线定位器光聚焦到第二焦点; 以及不透明屏蔽，其中具有孔，其中位于第二焦点附近并且具有这种几何形状，以便在满足光场边缘对比度要求的同时最大化光通量。 在另一个光系统中，光集中器包括反射器，该反射器包括准椭圆体部分，光源位于该准椭圆体部分内，位于准椭球部分和屏蔽之间的圆柱部分用于反射杂散光， 屏蔽件和位于孔和光源之间的中心安装部分，用于沿着孔的方向引导反射反射光。