This meant that a microscope could not resolve two objects located closer than λ/2NA, where λ is the wavelength of light and NA is the numerical aperture of the imaging lens. This diffraction ...

What is the Diffraction Limit? The diffraction limit is a fundamental barrier in optical microscopy that sets the minimum size of features that can be resolved using conventional light microscopes. It ...

For the first time, a flat telescope lens has been produced ... its path changed through diffraction, which means there is a third way to focus an image. For example, Fresnel zone plates (FZPs ...