Lens driving apparatus and lens barrel
AssigneeFuji Photo Optical Co., Ltd.
InventorKazuhiko Onda
Life of this patent
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Abstract
A lens driving apparatus in accordance with the present invention comprises a lead screw rotated by a driving source; a nut plate formed with a female threaded part meshing with a threaded part of the lead screw and adapted to move along the optical axis as the lead screw rotates; a lens holding frame provided to abut against the nut plate while being slidable with respect to a guide shaft extending along the optical axis, for holding a lens; and urging means for urging the lens holding frame against the nut plate. In this lens driving apparatus, the lens holding frame moves along the optical axis as the nut plate provided separately from the lens holding frame moves.
Claims9
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 nut plate formed with 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 lens holding frame for holding said lens, abutting against said nut plate while an abutting portion on a surface of at least one of said lens holding frame and said nut plate is movable, and said lens holding frame being slidable with respect to a guide shaft extending along said optical axis;
- and
- urging means for urging said lens holding frame against said nut plate.
Dependencies are inferred from the claim text.