"an optical device for focussing a camera or other instrument automatically"@en-us . . . . . "102759257"^^ . . "02759257-n"^^ . "102663679"@en-us . . "an optical device for focussing a camera or other instrument automatically"@en-us . "autofocus"@en-us . . . "0"^^ . "0"^^ . "autofocus"^^ . .