Experimental investigations on electrostatic filter lenses with wide image angles.
Constructing and evaluating electrostatic filter lenses with wide image angles for low voltage electron microscope
ELECTRON MICROSCOPE↗
Engineering topics
Den Boer, J. A.
Publications and source records attributed to Den Boer, J. A..
Numerical calculations on a wide angle filter lens.
Electron microscope filter lenses with unconventionally shaped electrodes and large image angles
ELECTRON MICROSCOPE↗