electron lens

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Thân thiện
electron lens

An electron lens focuses the electron beam in a cathode-ray tube.

Definition
  1. Noun:
    • A device in electronic equipment that uses a magnetic or electric field to focus a beam of electrons: An "electron lens" is a component, analogous to an optical lens for light, that manipulates the paths of electrons to converge them to a point or to form a specific electron beam pattern.
Usage
  • The term "electron lens" is a technical noun used primarily in the fields of physics, electron microscopy, and electronics engineering. It describes a key component in devices like cathode-ray tubes (CRTs) and electron microscopes.
Examples
  • Noun:
    • The electron microscope uses a series of magnetic electron lenses to magnify the specimen.
    • Adjusting the electron lens is crucial for obtaining a clear image in the scanning electron microscope.
Advanced Usage
  • "Magnetic electron lens": A type of electron lens that uses a magnetic field for focusing.
    • The resolution of the image depends heavily on the quality of the magnetic electron lens.
  • "Electrostatic electron lens": A type of electron lens that uses an electric field for focusing.
    • An electrostatic electron lens is often simpler in construction than a magnetic one.
Variants and Related Words
  • Electron optics (n): The branch of physics dealing with the control of electron beams using electric and magnetic fields, analogous to the control of light beams in optics.
    • The design of the device is based on principles of electron optics.
  • Focusing coil (n): A specific component, often a coil of wire, that creates a magnetic field to act as an electron lens.
    • The focusing coil around the neck of the CRT tube functions as an electron lens.
Synonyms
  • Beam-focusing device: A general term for any apparatus designed to focus a beam of particles or waves.
  • Electron-focusing element: A descriptive synonym highlighting its function within an electronic system.
Related Phrases

(Note: "Electron lens" is a technical compound noun and is not typically used in phrasal verb constructions.)

Related Idioms

(Note: "Electron lens" is a highly specialized technical term and is not used in idiomatic expressions.)

electron lens

An electron lens focuses the electron beam in a cathode-ray tube.

Noun
  1. electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons

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