公开(公告)号：US3746855A

公开(公告)日：1973-07-17

申请号：US3746855D

申请日：1971-10-27

Applicant: ASS ELECT IND

Inventor： HILDITCH D

IPC: H01J37/04 ,  H01J37/153 ,  H01J37/26 ,  G01N23/04

CPC classification number: H01J37/153 ,  H01J37/04

Abstract: In an electron microscope comprising an electromagnetic objective lens and at least three separate electromagnetic projector lenses, the rotations produced by the lenses are mutually balanced out, so that the final image has a substantially constant orientation with changes in magnification. Preferably, magnification is set by a single control knob. Preferably, the microscope has two modes of operation, for different magnification ranges, the rotations being balanced out in both ranges.

Abstract translation: 在包括电磁物镜和至少三个单独的电磁投影仪透镜的电子显微镜中，由透镜产生的旋转相互平衡，使得最终图像具有基本上恒定的取向并具有变化。 优选地，放大率由单个控制旋钮设定。 优选地，显微镜具有两种操作模式，对于不同的放大范围，旋转在两个范围内平衡。