In optics, the Airy disk (or Airy disc) and Airy pattern are descriptions of the best- focused spot of light that a perfect lens with a circular aperture can make, limited by the diffraction of light.

The Airy Disk When light passes through any size aperture (every lens has a finite aperture), diffraction occurs. The resulting diffraction pattern, a bright region in the center, together with a series of …

May 22, 2024 · Learn about the basics of Airy disk patterns in microscopy, including their generation, size changes with illumination, and resolving power.

Circular Aperture Diffraction

May 28, 2024 · Learn about the Airy disk, a key diffraction pattern formed when light passes through a circular aperture, crucial for understanding optical system resolution.

The Airy disk is defined as the image of a point source that is spread out by diffraction in an optical system, characterized by a central peak and surrounding zeroes. Its width is directly proportional to …

Learn how the Airy disk defines the diffraction limit of optical systems, influencing resolution and imaging quality, especially in thermal imaging applications.

Oct 29, 2025 · An Airy disk, named after the British astronomer Sir George Biddell Airy, is the central spot of light that is produced when a point source of light is imaged through a circular aperture.

Sep 11, 2018 · This tutorial explores how Airy pattern size changes with objective numerical aperture and the wavelength of illumination; it also simulates the close approach of two Airy patterns.

An explanation of Airy Disk from the Field Guide to Geometrical Optics, SPIE Press.