e/Field flattener Lens

Information
has gloss	eng: Field flattener lenses are used in modern binocular designs (e.g. Canon 10 x 42 L IS WP, 18 x 50 IS All Weather and Swarovski EL 8.5 x 42, EL 10 x 42) and in astronomic telescopes.
lexicalization	eng: Field flattener Lens
instance of	(noun) a transparent optical device used to converge or diverge transmitted light and to form images lens, lens system, lense