Assertion: lens's element | /r/HasProperty | arranged in three separated groups
Facets:
value: widely
type: DEGREE
Source sentences:
text: Dialyte designs were also used in the Schupmann medial telescope designed by in German optician Ludwig Schupmann near the end of the 19th century, in John Wall's 1999 "Zerochromat" retrofocally corrected dialytic refractor and the Russian made "TAL Apolar125" telescope which uses 6 elements arranged in three widely separated groups.