Pellicle

{
  "id": "MLC-T-IND-004213",
  "term": "Pellicle",
  "field": "Industrial and trades",
  "definition": "A thin, transparent membrane or film used in optical systems to protect sensitive surfaces or to act as a beam splitter. It consists of a stretched polymer film, often nitrocellulose or Mylar, mounted on a frame. Pellicles are employed in lithography to prevent dust from reaching photomasks and in interferometry as non-absorbing beam splitters due to their minimal thickness.",
  "subject": "Optics and imaging",
  "translations": {
    "de": "Pellicle",
    "es": "película delgada",
    "fr": "pellicule"
  },
  "url": "https://mlchart.com/terminology/industrial/pellicle/"
}