optical crown

1. 1.

   optical glass of low dispersion and low refractive index

   Synonymscrown glassoptical crown glass

   Broaderoptical glass

Questions about optical crown

What does optical crown mean?

optical crown means "optical glass of low dispersion and low refractive index".

What is another word for optical crown?

Close synonyms include crown glass, optical crown glass. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is optical crown a common word?

optical crown is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.