Airy disk

{
  "id": "MLC-T-IND-000150",
  "term": "Airy disk",
  "field": "Industrial and trades",
  "definition": "The central bright spot in the diffraction pattern of a point source of light passing through a circular aperture. This disk represents the smallest spot to which a lens can focus light, limited by diffraction rather than aberrations. Its angular radius is given by 1.22 times the ratio of the wavelength to the aperture diameter.",
  "subject": "Optics and imaging",
  "see_also": [
    "Airy pattern"
  ],
  "references": [
    "How to Match Lenses & Sensors for High-Res Imaging (schneiderkreuznach.com)"
  ],
  "translations": {
    "de": "Airy-Scheibe",
    "es": "disco de Airy",
    "fr": "disque d'Airy"
  },
  "url": "https://mlchart.com/terminology/industrial/airy-disk/"
}