This course introduces the fundamental concepts of electron optics, focusing on the behavior and control of electron beams using electric and magnetic fields. It covers the motion of electrons in uniform electrostatic and magnetic fields, and the design and classification of electron lenses. The course also explores the analogy between light optics and electron optics, highlighting their physical similarities in image formation and focusing. Finally, it discusses the different types of electron microscopes and their scientific and industrial applications, providing students with a comprehensive understanding of the principles and uses of modern electron optical instruments.