Optical device provided with tremble correcting function

An optical device comprises:

• a correcting optical system, included in an imaging optical system of said optical device, for correcting a tremble of a focused image due to an optical device tremble;
• and
• a tremble preventing function which corrects said focused image tremble by driving said correcting optical system such that said optical device tremble can be cancelled,
• wherein when said tremble preventing function is not carried out, said correcting optical system is maintained at all times at a position at which an optical axis of said correcting optical system coincides with an optical axis of other optical systems of said imaging optical system of said optical device.

An optical device, provided with a tremble preventing function, comprises:

• means for detecting an amount of an optical device tremble;
• a correcting optical system, included in an imaging optical system of said optical device, that corrects a tremble of a focused image due to said optical device tremble;
• means for driving said correcting optical system in two directions on a plane perpendicular to an optical axis of said correcting optical system, and continuing to maintain a position of said correcting optical system when a power supply to said optical device is stopped;
• means for controlling said driving means such that said optical device tremble amount is canceled;
• a power battery that supplies electric power to said driving means;
• and
• means for detecting an output voltage level of said power battery;
• means for controlling said driving means such that said correcting optical system is driven to a standard position such that said optical axis of said correcting optical system coincides with an optical axis of other optical systems included in said imaging optical system when an output voltage level detected by said output voltage level detecting means is below a predetermined threshold.