Aplanat

{
  "id": "MLC-T-IND-000243",
  "term": "Aplanat",
  "field": "Industrial and trades",
  "definition": "An optical system, such as a compound lens or mirror assembly, corrected for both spherical aberration and coma for a specific object point. This correction means that rays from an off-axis point converge to a single image point without the comet-shaped blur characteristic of coma. Aplanatic systems must satisfy the Abbe sine condition, which relates the sines of the angles of the input and output rays to the system's magnification.",
  "subject": "Optics and imaging",
  "see_also": [
    "aplanatic",
    "aplanatism",
    "achromat"
  ],
  "translations": {
    "de": "Aplanat",
    "es": "aplanat",
    "fr": "aplanat"
  },
  "url": "https://mlchart.com/terminology/industrial/aplanat/"
}