Apparatus for adjusting intermeshing angle in feed screw mechanism
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorMakoto Mogamiya
Life of this patent
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Abstract
An apparatus for adjusting an intermeshing angle of a pin and feed screw in a mechanism in which rotational movement of a feed screw is converted to a linear movement of the pin. The apparatus includes at least one pin which is in mesh with the feed screw, and a linearly movable member which supports the pin and which moves in the axial direction of the feed screw. The linearly movable member includes an adjusting mechanism for adjusting the intermeshing angle of the pin and feed screw.
Claims20
An apparatus for adjusting an intermeshing angle of a pin and a feed screw in a mechanism in which rotational movement of said feed screw is converted to a linear movement of said pin, comprising:
- at least one pin which is in engagement with said feed screw;
- and,
- a linearly movable member which supports said pin and which moves in an axial direction of said feed screw, wherein said linearly movable member includes an adjusting means for adjusting the intermeshing angle of said pin and said feed screw.
A lens driving apparatus for moving at least one lens group in an optical axis direction to effect zooming and/or focusing by means of an apparatus for adjusting an intermeshing angle of a pin and a feed screw in a mechanism in which rotational movement of said feed screw is converted to a linear movement of said pin, comprising:
- at least one pin which is in engagement with said feed screw;
- and,
- a linearly movable member, which is connected to said at least one lens group, supports said pin, and moves in an axial direction of said feed screw, wherein said linearly movable member includes an adjusting means for adjusting the intermeshing angle of said pin and said feed screw.
A lens driving apparatus in which rotational movement of a feed screw is converted to linear movement of at least one pair of lens assemblies in an optical axis direction, said apparatus comprising:
- a pair of feed screw shafts which are independently rotatable, wherein axes of said feed screw shafts are coaxially aligned in a predetermined direction;
- and
- a pair of driving means for independently driving said respective feed screw shafts, at least one of said pair of driving means spaced from said predetermined direction.
A lens driving apparatus in which rotational movement of a feed screw is converted to linear movement of at least one pair of lens assemblies in an optical axis direction to effect zooming and/or focusing, said apparatus comprising:
- a pair of feed screw shafts which are independently rotatable, wherein axes of said feed screw shafts are coaxially aligned in a predetermined direction;
- means for mounting said shafts and enabling relative rotation between said shafts;
- and
- a pair of driving means for independently driving said respective feed screw shafts.
Dependencies are inferred from the claim text.