Imaging device module with image stabilization, user terminal apparatus including the imaging device module, and method of operating the imaging device module
Provided is an imaging device module including: an imaging device including a first optical element on which a first light is incident and an image sensor; and a first optical image stabilization (OIS) operator configured to move back and forth along an optical axis direction of a second light reflected from the first optical system, wherein a third light having an optical path adjusted by the first OIS operator may be incident on the image sensor.
1. An imaging device module comprising:
an imaging device for obtaining an image of a subject, the imaging device comprising:
a first optical element on which first light is incident;
a first optical image stabilizer (OIS) movable back and forth along a first direction, wherein the first direction is a direction of an optical axis of second light reflected from the first optical element;
a first OIS driver configured to move the first OIS along the first direction; and
an image sensor on which third light reflected from the first OIS is incident.
2. The imaging device module of claim 1 , further comprising:
a first sensor configured to measure moving displacement of the imaging device in the first direction; and
a second sensor configured to measure moving displacement of the first OIS.
3. The imaging device module of claim 2 , wherein the imaging device further comprises:
a second OIS movable back and forth along a third direction, wherein a second direction is an optical axis direction of the first light and the third direction is perpendicular to the first direction and the second direction; and
a second OIS driver configured to move the second OIS along the third direction.
4. The imaging device module of claim 3 , further comprising:
a third sensor configured to measure moving displacement of the imaging device in the third direction; and
a fourth sensor configured to measure moving displacement of the second OIS.
5. The imaging device module of claim 4 , wherein the imaging device further comprises:
an auto-focus (AF) element movable back and forth along the first direction; and
an AF driver configured to move the AF element along the first direction.
6. The imaging device module of claim 5 , further comprising:
a controller configured to control the first and second OIS drivers and the AF driver.
7. The imaging device module of claim 1 , wherein at least one of the first optical element and the first OIS comprises a reflection surface.
8. A method of operating the imaging device module of claim 1 , the method comprising:
measuring moving displacement of the imaging device in the first direction resulting at least in part from hand tremble; and
moving the first OIS back and forth along the first direction based on the measured moving displacement of the imaging device in the first direction.
9. The method of claim 8 , further comprising:
moving an auto-focus (AF) element back and forth along the first direction.
10. The method of claim 9 , wherein moving displacement of the AF element is determined by adding the moving displacements of the first OIS in the first direction.
11. The method of claim 8 , further comprising:
measuring moving displacement of the imaging device in the third direction resulting at least in part from hand tremble; and
moving the second OIS back and forth along the third direction based on the measured moving displacement of the imaging device in the third direction.