Patent ID: 6501604
Filing Date: 2002-12-31
Classification: G02B

Abstract:
A lens driving apparatus for moving a lens along an optical axis, said lens driving apparatus comprising:a lead screw rotated by a driving source; a lens holding frame for holding said lens, said lens holding frame having a threaded part meshing with a threaded part of said lead screw and adapted to move along said optical axis as said lead screw rotates; a nut plate formed with a threaded part meshing with said threaded part of said lead screw and adapted to move along said optical axis as said lead screw rotates; rotation preventing means for preventing said lens holding frame and said nut plate from rotating as said lead screw rotates; and urging means for urging said lens holding frame and said nut plate in a direction by which said lens holding frame and said nut plate separate from each other.