e/Triplet lens

Information
has gloss	eng: A triplet lens is an optical device consisting of three single lenses. The triplet design is the simplest to give the required number of degrees of freedom to allow the lens designer to overcome all Seidel aberrations.
lexicalization	eng: Triplet lens
lexicalization	eng: Triplet
instance of	(noun) a transparent optical device used to converge or diverge transmitted light and to form images lens, lens system, lense