Shake correction unit and imaging apparatus
A shake correction unit comprises a first lens unit that holds a first lens and is movable in a direction perpendicular to an optical axis of the first lens during a shake correction operation and a second lens unit that holds a second lens and is attached to the first lens unit and moves in a direction perpendicular to the optical axis together with the first lens unit during the shake correction operation, at least one of a shutter and an iris diaphragm having a changeable opening diameter is disposed between the first lens unit and the second lens unit.
1. A shake correction unit comprising:
a first lens unit that holds a first lens and is movable in a direction perpendicular to an optical axis of the first lens; and
a second lens unit that holds a second lens and is attached to the first lens unit and moves in a direction perpendicular to the optical axis together with the first lens unit,
at least one of a shutter and an iris diaphragm having a changeable opening diameter;
a base member that holds at least one of the shutter and the diaphragm and is disposed between the first lens unit and the second lens unit;
wherein at least one of the shutter and the iris diaphragm is disposed between the first lens unit and the second lens unit,
wherein the second lens unit has three receiving units and three engaging units,
wherein the receiving unit extends through the base member so as to abut the first lens unit, and
wherein the engaging unit extends through the base member so as to engage with the first lens unit.
2. The shake correction unit according to claim 1 , further comprising:
a plurality of balls that are disposed between the base member and the first lens unit;
an urging unit configured to urge the base member and the first lens unit in a direction toward each other;
a magnet provided on the first lens unit; and
a coil and a position detecting unit that are disposed so as to sandwich the magnet in a direction along the optical axis, while one of the coil and the position detecting unit is provided on the base member.
3. The shake correction unit according to claim 2 , wherein the engaging unit engages with the first lens unit with a snap-fit structure.
4. An imaging apparatus comprising:
the shake correction unit according to claim 1 ; and
an imaging unit that captures an image obtained through the shake correction unit.
5. The shake correction unit according to claim 1 ;
wherein the first lens unit and the second lens unit are engaged at three positions.
6. The shake correction unit according to claim 1 ;
wherein the first lens unit and the second lens unit are engaged with each other with extending through the base member.
7. The shake correction unit according to claim 1 ;
wherein the base member has an aperture through which an imaging light flux passes, and
wherein an interior wall portion of the aperture has a movement range regulating unit which restricts the movement of the first lens unit.
8. The shake correction unit according to claim 1 ;
wherein the base member has boss-like rotation regulating units, and
wherein each of the first lens unit and the second lens unit has a hole-shaped regulated rotation unit into which the rotation regulating units are inserted.
9. The shake correction unit according to claim 1 ;
wherein the regulated rotation unit corresponds to the movable range of the first lens unit and the second lens unit.
10. The shake correction unit according to claim 1 ;
wherein the rotation regulating unit and the regulated rotation unit are provided so that, when an exterior force is applied to the shake correction unit, a rolling of the second lens unit is to be regulated after a rolling of the first lens unit is regulated.
11. A shake correction unit comprising:
a first lens unit that holds a first lens and is movable in a direction perpendicular to an optical axis of the first lens; and
a second lens unit that holds a second lens and is attached to the first lens unit and moves in a direction perpendicular to the optical axis together with the first lens unit;
at least one of a shutter and an iris diaphragm having a changeable opening diameter;
a base member that holds at least one of the shutter and the diaphragm and is disposed between the first lens unit and the second lens unit;
wherein at least one of the shutter and the iris diaphragm is disposed between the first lens unit and the second lens unit, and
wherein the first lens unit and the second lens unit are engaged with each other at a circumference of at least one of the shutter and the iris diaphragm, with extending through the base member.
12. The shake correction unit according to claim 11 , further comprising:
a plurality of balls that are disposed between the base member and the first lens unit;
an urging unit configured to urge the base member and the first lens unit in a direction toward each other;
a magnet provided on the first lens unit; and
a coil and a position detecting unit that are disposed so as to sandwich the magnet in a direction along the optical axis, while one of the coil and the position detecting unit is provided on the base member.
13. The shake correction unit according to claim 11 ,
wherein the second lens unit has three receiving units and three engaging units,
wherein the receiving unit extends through the base member so as to abut the first lens unit, and
wherein the engaging unit extends through the base member so as to engage with the first lens unit.
14. The shake correction unit according to claim 13 , wherein the engaging unit engages with the first lens unit with a snap-fit structure.
15. An imaging apparatus comprising:
the shake correction unit according to claim 11 ; and
an imaging unit that captures an image obtained through the shake correction unit.
16. The shake correction unit according to claim 11 ;
wherein the first lens unit and the second lens unit are engaged at three positions.
17. The shake correction unit according to claim 11 ;
wherein the base member has an aperture through which an imaging light flux passes, and
wherein an interior wall portion of the aperture has a movement range regulating unit which restricts the movement of the first lens unit.
18. The shake correction unit according to claim 11 ;
wherein the base member has boss-like rotation regulating units, and
wherein each of the first lens unit and the second lens unit has a hole-shaped regulated rotation unit into which the rotation regulating units are inserted.
19. The shake correction unit according to claim 11 ;
wherein the regulated rotation unit corresponds to the movable range of the first lens unit and the second lens unit.
20. The shake correction unit according to claim 11 ;
wherein the rotation regulating unit and the regulated rotation unit are provided so that, when an exterior force is applied to the shake correction unit, a rolling of the second lens unit is to be regulated after a rolling of the first lens unit is regulated.