Electrostatic lens is one of the electronic lenses. A device for focusing and imaging an electron beam by an electrostatic field generated by a charged conductor. It is widely used in electronic devices (such as cathode ray oscilloscope) and electron microscopy.
Electrostatic lens, also known as electron lens, can focus the electron beam.
It mainly consists of photocathode, focusing electrode, auxiliary anode and each potential of cathode.
The principle of electronic refraction is similar to that of optical refraction, so the static focusing field is called electrostatic lens.
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