Patent ID: 8687953

Claim:
A photographic optical device comprising: a reflection type optical sensor which comprises a light emitting element whose light emitting amount is varied depending on a supplied electric current and a light receiving element whose output current is varied depending on an amount of received light; a support body to which the reflection type optical sensor is fixed; a camera module which comprises a lens and an imaging element and is supported by the support body so as to be capable of being swung, and the camera module reflecting light from the light emitting element toward the light receiving element; a shake correction mechanism structured to swing the camera module so as to incline an optical axis of the lens with respect to the support body to correct a shake; a resistor configured to convert an output current of the light receiving element to an output voltage; a home position voltage creating means configured to create a home position voltage that is an output voltage of the light receiving element when the camera module is located at a predetermined home position or in the vicinity of the home position; a comparator configured to compare the home position voltage created by the home position voltage creating means with a predetermined reference voltage; and a variable current source configured to control an electric current supplied to the light emitting element based on an output signal from the comparator; wherein a relative position of the camera module with respect to the support body is detected by the reflection type optical sensor.