公开(公告)号：US4467243A

公开(公告)日：1984-08-21

申请号：US315869

申请日：1981-10-28

申请人： Masakazu Fukushima ,  Masanori Maruyama ,  Shigeru Ehata ,  Chihaya Ogusu ,  Yukinao Isozaki

发明人： Masakazu Fukushima ,  Masanori Maruyama ,  Shigeru Ehata ,  Chihaya Ogusu ,  Yukinao Isozaki

IPC分类号： H01J29/48 ,  H01J

CPC分类号： H01J29/488

摘要： An electron gun is disclosed which includes a thermionic cathode for emitting an electron beam, a grid having a first aperture for controlling the diameter of the electron beam, and an anode having a second aperture for catching a part of the electron beam having passed through the first aperture; and in which the diameter of the first aperture is smaller than or equal to the diameter of the second aperture, and the grid and the anode are applied with positive potentials relative to a cathode potential, for example, with a voltage of 5 to tens of volts and a voltage of 100 to 500 volts, respectively, to form a uniform axial field between the grid and the anode, thereby generating a laminar flow electron beam having a constant current density.

摘要翻译： 公开了一种电子枪，其包括用于发射电子束的热离子阴极，具有用于控制电子束的直径的第一孔的栅格，以及具有用于捕获已通过电子束的电子束的一部分的第二孔的阳极 第一光圈; 并且其中第一孔的直径小于或等于第二孔的直径，并且栅极和阳极相对于阴极电位施加正电位，例如以5至几十的电压施加 伏特和100至500伏的电压，以在格栅和阳极之间形成均匀的轴向场，由此产生具有恒定电流密度的层流电子束。

公开(公告)号：US4031551A

公开(公告)日：1977-06-21

申请号：US668401

申请日：1976-03-19

申请人： Saburo Nobutoki ,  Chihaya Ogusu ,  Masao Sugimoto

发明人： Saburo Nobutoki ,  Chihaya Ogusu ,  Masao Sugimoto

IPC分类号： H04N5/228 ,  H01J31/38 ,  H04N9/097 ,  H04N5/21

CPC分类号： H04N9/097

摘要： This specification discloses an improvement in an image pickup device incorporating therein an optical system which reduces the delay of the photoelectric signal by separately adding bias light to the light from an object. The improvement is characterized in that the bias light is introduced through that portion of the face plate which makes no contribution to image pickup.

摘要翻译： 本说明书公开了一种在其中结合有光学系统的图像拾取装置的改进，该光学系统通过将偏光分开地添加到来自物体的光来减少光电信号的延迟。 其改进的特征在于偏置光通过对图像拾取没有贡献的面板的那部分引入。