Optical adjusting apparatus
An optical adjusting apparatus having an optical adjusting lens to perform image stabilization and auto focusing includes a base supporting a lens barrel on which the optical adjusting lens is mounted, a first driver to move the lens barrel in a first direction, a plurality of first ball bearings disposed between the base and the first driver, a second driver to move the lens barrel in a second direction that is perpendicular to the first direction, and a plurality of second ball bearings disposed between the first driver and the second driver.
1. An optical adjusting apparatus having an optical adjusting lens to perform image stabilization and auto focusing, the apparatus comprising:
a base supporting a lens barrel on which the optical adjusting lens is mounted;
a first driver to move the lens barrel in a first direction;
a plurality of first ball bearings disposed between the base and the first driver that slidably supports the first driver for movement in the first direction;
a second driver to move the lens barrel in a second direction that is perpendicular to the first direction; and
a plurality of second ball bearings disposed between the first driver and the second driver that slidably supports the second driver for movement in the second direction.
2. The apparatus of claim 1 , wherein the first driver is disposed between the base and the second driver.
3. The apparatus of claim 2 , wherein the lens barrel is mounted on the second driver.
4. The apparatus of claim 3 , wherein:
the first direction is a direction perpendicular to an optical axis direction of the optical adjusting lens; and
the second direction is the optical axis direction of the optical adjusting lens.
5. The apparatus of claim 4 , wherein the first driver comprises:
an image stabilization base to moveably support the second driver; and
an image stabilization extender extending from the image stabilization base in the optical axis direction.
6. The apparatus of claim 5 , wherein the plurality of first ball bearings are disposed between the image stabilization base and the base.
7. The apparatus of claim 6 , wherein:
a plurality of first ball bearing accommodating grooves to slidably accommodate the plurality of first ball bearings are formed in the base; and
the first ball bearings slidably support one surface of the image stabilization base opposite a front surface of the base.
8. The apparatus of claim 5 , wherein the plurality of second ball bearings are disposed between the second driver and the image stabilization extender.
9. The apparatus of claim 8 , wherein:
a plurality of second ball bearing accommodating grooves that slidably accommodate the plurality of second ball bearings are formed in the image stabilization extender; and
the plurality of second ball bearings slidably support one surface of the second driver opposite a front surface of the image stabilization extender.
10. The apparatus of claim 9 , wherein the plurality of second ball bearing accommodating grooves comprise:
a plane groove extending along the optical axis direction; and
a V-shaped groove distanced from the plane groove by a predetermined distance and extending along the optical axis direction.
11. The apparatus of claim 3 , wherein the first direction is an optical axis direction of the optical adjusting lens, and the second direction is a direction perpendicular to the optical axis direction.
12. The apparatus of claim 11 , wherein the first driver comprises:
an auto focusing base to moveably support the second driver; and
an auto focusing extender extending from the auto focusing base in the optical axis direction.
13. The apparatus of claim 12 , wherein the base comprises:
a lower base; and
a side base extending from the lower base in the optical axis direction.
14. The apparatus of claim 13 , wherein the plurality of first ball bearings are disposed between the auto focusing extender and the side base.
15. The apparatus of claim 14 , wherein:
a plurality of first ball bearing accommodating grooves to slidably accommodate the plurality of first ball bearings are formed in the side base, and
the plurality of first ball bearings slidably support one surface of the auto focusing extender opposite a front surface of the side base.
16. The apparatus of claim 12 , wherein the plurality of second ball bearings are disposed between the second driver and the auto focusing base.
17. The apparatus of claim 16 , wherein:
a plurality of second ball bearing accommodating grooves to slidably accommodate the plurality of second ball bearings are formed in the auto focusing bearing, and
the plurality of second ball bearings slidably support one surface of the second driver opposite a front surface of the auto focusing base.
18. The apparatus of claim 1 , wherein the number of the plurality of first ball bearings and the plurality of second ball bearings are at least three, respectively.
19. An optical adjustment apparatus, comprising:
a base;
a first driver mounted on the base, the first driver being slidably supported by a plurality of first ball bearings for movement in a first direction relative to the base;
a second driver mounted on the first driver and movable in the first direction with the first driver, the second driver being slidably supported by a plurality of second ball bearings for movement in a second direction relative to the base, the second direction being perpendicular to the first direction; and
an optical adjusting lens disposed on the second driver, the optical adjusting lens having an optical axis direction corresponding to one of the first and second directions.
20. An optical adjustment apparatus, comprising:
a base;
a lens barrel having a lens;
a first driver supported by the base;
a second driver supported by the first driver, the second driver supporting the lens barrel;
a first bearing disposed between the base and the first driver that slidably supports movement of the first driver in a first direction; and
a second bearing disposed between the first driver and the second driver that slidably supports movement of the second driver in a second direction.
21. The apparatus of claim 20 , further comprising:
a first groove formed in a surface of the base in the first direction to accommodate the first bearing; and
a second groove formed in a surface of the first driver in the second direction to accommodate the second bearing.
22. The apparatus of claim 21 , wherein:
the first groove comprises a plurality of first grooves formed in the surface of the base; and
at least one of the plurality of first grooves is configured to restrict movement of the first driver in the second direction.
23. The apparatus of claim 21 , wherein:
the second groove comprises a plurality of second grooves formed in the surface of the first driver; and
at least one of the second grooves is configured to restrict movement of the second driver in the first direction.
24. The apparatus of claim 20 , wherein:
the second direction is along an X-Y plane perpendicular to an optical axis of the lens; and
the second driver comprises:
a first actuator to control movement of the second driver along the X axis of the X-Y plane; and
a second actuator to control movement of the second driver along the Y axis of the X-Y plane.
25. The apparatus of claim 20 , further comprising:
an actuator to control movement of the first driver in the first direction, the actuator controlling the movement of the first driver by interacting with a yoke disposed on the base.
26. The apparatus of claim 20 , further comprising:
an actuator to control movement of the second driver in the second direction, the actuator controlling the movement of the second driver by interacting with a yoke disposed on the first driver.
27. The apparatus of claim 20 , further comprising:
a first detector to detect movement of the first driver in the first direction, the first detector being disposed on the base; and
a second detector to detect movement of the second driver in the second direction, the second detector being disposed on the first driver.
28. The apparatus of claim 27 , wherein:
the first direction is along an X-Y plane perpendicular to an optical axis of the lens; and
the first detector comprises a plurality of first detectors, one of the first detectors detecting movement of the first driver along the X axis of the X-Y plane, and another of the first detectors detecting movement of the first driver along the Y axis of the X-Y plane.
29. The apparatus of claim 27 , wherein:
the second direction is along an X-Y plane perpendicular to an optical axis of the lens; and
the second detector comprises a plurality of second detectors, one of the second detectors detecting movement of the second driver along the X axis of the X-Y plane, and another of the second detectors detecting movement of the second driver along the Y axis of the X-Y plane.