公开(公告)号：US20160196952A1

公开(公告)日：2016-07-07

申请号：US14916529

申请日：2014-05-16

Applicant: HIitachi High-Technologies Corporation

Inventor： Hiroaki MATSUMOTO ,  Takeshi SATO ,  Yoshifumi TANIGUCHI ,  Ken HARADA

IPC: H01J37/10 ,  H01J37/147 ,  H01J37/05 ,  H01J37/285

CPC classification number: H01J37/10 ,  G01N23/20058 ,  G01N2223/418 ,  H01J37/04 ,  H01J37/05 ,  H01J37/09 ,  H01J37/147 ,  H01J37/1472 ,  H01J37/153 ,  H01J37/24 ,  H01J37/244 ,  H01J37/26 ,  H01J37/261 ,  H01J37/28 ,  H01J37/285 ,  H01J37/295 ,  H01J2237/21 ,  H01J2237/2614

Abstract: The present invention relates to a lens-less Foucault method wherein a transmission electron microscope objective lens (5) is turned off, an electron beam crossover (11, 13) is matched with a selected area aperture (65), and the focal distance of a first imaging lens (61) can be changed to enable switching between a sample image observation mode and a sample diffraction pattern observation mode, characterized in that a deflector (81) is disposed in a stage following the first imaging lens (61), and conditions for an irradiating optical system (4) can be fixed after conditions for the imaging optical system have been determined. This allows a lens-less Foucault method to be implemented in a common general-use transmission electron microscope with no magnetic shielding lens equipped, without burdening the operator.

Abstract translation: 本发明涉及一种无透镜Foucault方法，其中透射电子显微镜物镜（5）被关闭，电子束交叉（11,13）与所选区域孔径（65）匹配，并且焦距 可以改变第一成像透镜（61）以在样本图像观察模式和样本衍射图案观察模式之间切换，其特征在于，偏转器（81）设置在跟随第一成像透镜（61）的阶段中，以及 可以在确定成像光学系统的条件之后固定照射光学系统（4）的条件。 这样就可以在没有磁屏蔽透镜的公共通用透射电子显微镜中实现无镜头福柯方法，而不会对操作者造成负担。