Definition of crown lens in English:

Share this entry

crown lens

noun

A lens made of crown glass and usually forming one component of an achromatic lens.
Example sentences
  • After polishing the crown lens, a new lap - convex - is made and the third surface polished.
  • After crown lenses are chemtempered, suspend them over the chemical bath for at least 15 minutes.
  • Now lower the mating surface of the crown lens onto this puddle without entrapping air and let the lens settle into the oil unaided.

For editors and proofreaders

Syllabification: crown lens

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.