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Results 81 - 90 of 348 for Lens
  • What is a Focal Point?
    Article - 31 Dec 2013
    A focal point is a common point on the principal axis where all the light rays starting from the object converge.
  • What is Transformation Optics?
    Article - 5 Feb 2024
    Transformation optics, pioneered by Pendry in 2006, manipulates light via metamaterials for applications like cloaking and improved antennas.
  • What is an Aperture?
    Article - 31 Dec 2013
    An aperture is an opening or a hole through which light passes by. In an optical system, the aperture is the opening that defines the cone angle of a set of light rays that converges at a focal point...
  • Comatic Aberration – What is Comatic Aberration?
    Article - 10 Dec 2007
    Comatic aberration is an optical aberration which mainly occurs with off-axis light fluxes. Comatic aberration is most serious when a microscope is out of alignment.
  • How Quantum States of Electrons Change in Electron Microscopes
    Article - 26 Mar 2020
    The discovery of this duality in light was the basis of modern quantum physics, and the ability of electrons’ quantum states to change from wave to particle, or both at once, continues to fascinate...
  • The Uses of Polymers in Optical Applications
    Article - 28 Jan 2020
    Polymers are one of the most widely used material classes in the world today, and there are many different types of polymers.
  • Factors to Consider When Selecting a Stereo Microscope
    Article - 24 May 2012
    Choosing a stereo microscope? Assess application, user needs, magnification, optics, ergonomics, and lighting.
  • Depth of Focus - Introduction and Meaning
    Article - 27 Dec 2013
    Depth of focus in optics is a measure of the tolerance of placement of the image plane with respect to the lens. In photography, depth of focus refers to the tolerance of the films displacement within...
  • What is Photothermal Spectroscopy?
    Article - 14 Feb 2023
    A type of optical analytic technique called photothermal spectroscopy is a powerful tool to study heat that is produced as a result of light absorption in a sample that has been exposed to radiation.
  • Micro-Objectives of Immersion Lithography
    Article - 13 May 2020
    The optical lithography community is gaining confidence that immersion lithography can further reduce critical dimensions based on theoretical models.

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