Image blur correction device and imaging device using same
AssigneeKonica Minolta Opto, Inc.
InventorNaohiko Hayashi
Life of this patent
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Abstract
In an image blur correction device and an imaging device according to the present invention, a holder for holding an optical component, which is displaced for correcting an image blur, is supported by one or more balls, so as to be freely displaced by sliding on the base, and has a structure to restrict the movement of the holder within a range, which is smaller than a mobile range normally acquired when the ball is assembled, if the ball is omitted in an assembly. Therefore the image blur correction device and the imaging device having this configuration can detect the missing of a ball in an assembly.
Claims18
An image blur correction device, comprising:
- a base;
- an optical component that is inserted in an optical system;
- a holder that holds the optical component and is supported by one or more balls so as to be freely displaced by sliding on the base;
- and
- an actuator that displaces the holder on the base, wherein
- the holder has one of a protrusion and a concave portion near a housing position for the one or more balls,
- the base has the other of the protrusion and the concave portion at a position that is outside a mobile range of the one or more balls and that faces the protrusion or the concave portion,
- a height of the protrusion is lower than the space between the holder, which is elevated from the base by the insertion of the one or more balls, and the base, and
- inner dimensions of the concave portion and outer dimensions of the protrusion are set so that a mobile range of the protrusion fitted in the concave portion becomes smaller than a mobile range of the holder.
An imaging device, comprising:
- a lens unit having one or more lenses;
- and
- an image blur correction device for optically correcting an image blur of an image formed by the lens unit, wherein
- the image blur correction device comprises:
- a base;
- an optical component that is inserted in an optical system;
- a holder that holds the optical component and is supported by one or more balls so as to be freely displayed by sliding on the base;
- and
- an actuator that displaces the holder on the base, wherein
- the holder has one of a protrusion and a concave portion near a housing position of the one or more balls,
- the base has the other of the protrusion and the concave portion at a position that is outside a mobile range of the one or more balls and that faces the protrusion or the concave portion,
- a height of the protrusion is lower than a space between the holder, which is elevated from the base by the insertion of the one or more balls, and the base, and
- inner dimensions of the concave portion and outer dimensions of the protrusion are set so that a mobile range of the protrusion fitted in the concave portion becomes smaller than a mobile range of the holder.
Dependencies are inferred from the claim text.