Crossword clue: a transparent optical device used to converge or diverge transmitted light and to form images

The most common answer is lens (4 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

lens 4 letters wn-def

a transparent optical device used to converge or diverge transmitted light and to form images

lense 5 letters wn-def

a transparent optical device used to converge or diverge transmitted light and to form images