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    • 67. 发明公开
    • X-RAY GENERATOR
    • X射线发生器
    • EP1429587A1
    • 2004-06-16
    • EP02765365.8
    • 2002-08-29
    • Toshiba Carrier Corporation
    • SHIMONO, Takashi
    • H05G1/00H05G1/70
    • H01J35/045H05G1/30H05G1/34
    • An X-ray generator comprises a cathode electrode (15), a grid electrode (17) for controlling an electron beam (e) generated by the cathode electrode (15), a focus electrode (18) for focusing the electron beam (e), and an anode target (14) for emitting X rays by the collision of the electron beam (e). A bias voltage (Vb) is impressed between the cathode electrode (15) and the grid electrode (17) from a bias voltage generating section (20). A tube voltage (Vt) is impressed on the anode target (13) from a tube voltage generating section (19). A voltage dividing section (31) divides the tube voltage (Vt) to generate a focus voltage (Vf). The effect of a variation in voltage on the formation of a focal point of the electron beam is suppressed by impressing such a focus voltage (Vf) on the focus electrode (18).
    • 一种X射线发生器包括:用于聚焦所述电子束控制由阴极电极(15),聚焦电极(18)产生的电子束(e)阴极电极(15),栅电极(17)(e)中 以及通过电子束(e)的碰撞而发射X射线的阳极靶(14)。 偏置电压(Vb)从偏置电压产生部分(20)施加在阴极电极(15)和栅极电极(17)之间。 管电压(Vt)从管电压发生部分(19)施加在阳极靶(13)上。 分压部分(31)分割管电压(Vt)以产生聚焦电压(Vf)。 通过在聚焦电极(18)上施加这样的聚焦电压(Vf)来抑制电压变化对电子束焦点形成的影响。
    • 69. 发明公开
    • X-Ray apparatus
    • X射线装置
    • EP0051430A1
    • 1982-05-12
    • EP81305079.6
    • 1981-10-27
    • KABUSHIKI KAISHA TOSHIBA
    • Nishio, Kohsaku Patent Division
    • H05G1/60A61B6/02G03B42/02
    • G03B42/02H01J35/045H01J35/24H01J2235/068H05G1/58H05G1/60
    • X-ray stereoscopic cinematography apparatus uses an X-ray tube (1) having a pair of focal points (fr and fl) on the anode (P), from which X-ray beams can be radiated independently. Focal points (fr and fl) are spaced by the inter-ocular distance. The X-ray beams are directed through an object (2) such as a patient, and are received by an image intensifier (3) which emits an optical image received by an optical system (4). The optical beam can be diverted to either or both of cinecameras (5 and 6) for receiving "right" and "left" images. A television camera (7) is arranged to receive both images. The shutters of the cinecameras are synchronised but are 180° out of phase, so that both shutters are never open at the same time. Mode selector (8) can select a stereoscopic radiographic mode, a mono-scopic radiographic mode or a fluoroscopic mode. When the first is selected, X-ray beams are emitted alternately from the focal points (fr and fl) in synchronism with the shutters of the cinecameras (5, 6) so that the first cinecamera (5) receives only "right" images and the other cinecamera (6) receives only the "left" images. In the mono-scopic radiographic mode, X-ray beams are emitted from only one of the two focal points and only one of the cinecameras is activated. In the fluoroscopic mode, X-ray beams from only one of the focal points is emitted, neither cinecamera is activated and the optical image is received only by the television camera (7).
    • X射线立体电影摄影装置使用在阳极(P)上具有一对焦点(fr和fl)的X射线管(1),X射线束可以独立地从该X射线管发射。 焦点(fr和fl)由眼间距离隔开。 X射线束被引导穿过诸如患者的物体(2),并且被发射由光学系统(4)接收的光学图像的图像增强器(3)接收。 光束可以转移到电影摄影机(5和6)中的任一个或两个,以接收“右”和“左”图像。 电视摄像机(7)被安排来接收两个图像。 电影摄影机的快门是同步的,但相位差180°,这样两个快门都不会同时打开。 模式选择器(8)可以选择立体射线照相模式,单视射线照相模式或荧光透视模式。 当选择第一个时,与焦距(5,6)的快门同步地从焦点(fr和f1)交替发射X射线束,使得第一个电影摄影机(5)仅接收“右”图像,并且 另一个电影摄影机(6)仅接收“左”图像。 在单视摄影模式中,仅从两个焦点中的一个焦点发射X射线束,并且只有一个电影摄像机被激活。 在透视模式中,仅发射来自一个焦点的X射线束,既不激活电影摄影机,也仅通过电视摄像机(7)接收光学图像。