公开(公告)号：US5466924A

公开(公告)日：1995-11-14

申请号：US275047

申请日：1994-07-13

申请人： Gerardus Van Aller

发明人： Gerardus Van Aller

IPC分类号： H01J31/15 ,  G21K4/00 ,  H01J31/50 ,  H01J40/14

CPC分类号： G21K4/00 ,  H01J31/505 ,  H01J2229/18

摘要： A proximity-type image intensifier tube has an entrance screen which includes a photocathode which is substantially insensitive to light of wavelengths above 500 nm, and an exit screen having a phosphor layer having a substantial emissivity of notably red light having a wavelength of at least 550 nm. Consequently, optical radiation produced by the exit screen does not produce disturbing feedback radiation from the photocathode. This avoids the need for a reflecting metallic layer on the phosphor layer, as has heretofore been required in order to prevent feedback radiation.

摘要翻译： 接近型图像增强管具有入射屏幕，该入口屏幕包括对波长高于500nm的光基本不敏感的光电阴极，以及具有荧光体层的出射屏具有显着的发射率，具有至少550的波长的明显的红光 nm。 因此，由出射屏产生的光辐射不会产生来自光电阴极的干扰反馈辐射。 因此，为了防止反射辐射，为避免在荧光体层上需要反射金属层。

公开(公告)号：US5093566A

公开(公告)日：1992-03-03

申请号：US548346

申请日：1990-06-29

申请人： Gerardus Van Aller

发明人： Gerardus Van Aller

IPC分类号： G01T1/28 ,  H01J31/50 ,  H01J40/18 ,  H01J43/02

CPC分类号： H01J31/501 ,  H01J43/02

摘要： Via the shape of the photocathode surface and the geometry and potential distribution of electrodes of the electron-optical system, an X-ray image intensifier tube is optimized for reduction of the transit time variance for photoelectrons from the photocathode surface to a photoelectron detector. The photoelectron detector, on which an image need not be formed in this case, has, for example, a comparatively small entrance surface and is arranged in or near a cross-over of the photoelectrons.

公开(公告)号：US5138147A

公开(公告)日：1992-08-11

申请号：US650521

申请日：1991-02-05

申请人： Gerardus van Aller ,  Guido T. M. Mulder ,  Engelbertus Rongen

发明人： Gerardus van Aller ,  Guido T. M. Mulder ,  Engelbertus Rongen

IPC分类号： H01J31/50 ,  H04N5/32

CPC分类号： H01J31/505

摘要： An X-ray image intensifier tube includes an entrance screen with a photocathode and, opposite thereto and at a slight distance therefrom, is a detection screen for detecting entrance image signals intensified by the proximity tube. The detection screen comprises a phosphor layer and an integrated matrix of detection elements within the tube envelope. The detection screen can be read in a location-sensitive manner and produces signals which can be directly electrically processed. The detection screen may be provided with a metal layer enabling brightness control and be mounted completely or partly outside the tube. The tube is assembled using low-temperature thermocompression seals wherever desired. The latter is applicable to the tube seal, so that the risk of deactivation of the photocathode is avoided.

公开(公告)号：US4943711A

公开(公告)日：1990-07-24

申请号：US330233

申请日：1989-03-29

申请人： Gerardus Van Aller ,  Jan Wieldraaijer

发明人： Gerardus Van Aller ,  Jan Wieldraaijer

IPC分类号： H01J31/50 ,  H01J29/86

CPC分类号： H01J29/861

摘要： In an image intensifier tube the input screen has a profile which is determined by a higher degree polynomial of which the constant term and the first order term are both zero. As a result of this the profile shows no local inhomogeneities and the profile may be adapted to an optical imaging by the electron-optical system of the photocathode on the output screen.

公开(公告)号：US4564753A

公开(公告)日：1986-01-14

申请号：US505538

申请日：1983-06-17

申请人： Gerardus van Aller ,  Walter H. Kuhl

发明人： Gerardus van Aller ,  Walter H. Kuhl

IPC分类号： G01T1/20 ,  G01T1/22 ,  G01T1/28 ,  H01J43/02 ,  H01J31/50

CPC分类号： G01T1/22 ,  H01J43/02

摘要： A detector for the detection of, for example, Cerenkov radiation includes an entrance screen (5) which may cover more than half of an envelope (1); the majority of the envelope is preferably spherical. A photo-electron detecting exit screen (11) is proportioned and arranged inside the envelope (1) so that a small decay time and a high sensitivity are achieved. A scintillant exit screen (11), which is mounted on an indentation (15) in the envelope (1), can thus produce, in conjunction with a photomultiplier tube (17) mounted inside the indentation (15), a photoelectric intensification by a factor 100.

摘要翻译： 用于检测例如切伦科夫辐射的检测器包括可覆盖半个封套（1）的入口屏（5）; 大多数包络线最好是球形的。 光电子检测出口屏幕（11）成比例地布置在封套（1）的内部，从而实现了小的衰减时间和高灵敏度。 因此，安装在信封（1）中的凹陷（15）上的闪烁出口屏幕（11）可以与安装在凹陷（15）内的光电倍增管（17）一起产生光电增强 因子100。

公开(公告)号：US5369268A

公开(公告)日：1994-11-29

申请号：US197105

申请日：1994-02-15

申请人： Gerardus Van Aller ,  Ulrich Schiebel

发明人： Gerardus Van Aller ,  Ulrich Schiebel

IPC分类号： H01J29/18 ,  G01T1/28 ,  H01J31/50 ,  H01J40/14

CPC分类号： H01J31/507 ,  G01T1/28 ,  H01J2231/50036 ,  H01J2231/50068

摘要： An X-ray image amplifier tube designed with an input screen having a photocathode and with a detection screen which is opposite the latter and a short distance away for detection of a photo-electron beam which is generated by X-ray input image signals and is amplified in the tube. The detection screen is provided with a conversion coating for converting an image-carrying photo-electron beam into a potential excursion and to this end contains, for example, an amorphous selenium coating or a porous KCl coating. A variable potential can be applied both over the vacuum gap between the photocathode and the conversion coating and over the conversion coating itself and, as a result of this, high image brightness dynamics can be achieved without image disruption.

摘要翻译： 一种X射线图像放大器管，其设计有具有光电阴极的输入屏幕和与之相反的检测屏幕，并且用于检测由X射线输入图像信号产生的光电子束的短距离，并且是 在管中放大。 检测屏幕设置有用于将图像载体的光电子束转换成电位偏移的转换涂层，并且该目的包含例如无定形硒涂层或多孔KCl涂层。 可以在光电阴极和转换涂层之间以及转化涂层本身上的真空间隙上施加可变电位，并且因此，可以实现高图像亮度动态，而没有图像破坏。