Optical anti-shake driving structure
An optical anti-shake driving structure includes a base, a sliding platform, a driving device and a limiting device. At least two guide rods are set on the base, the guide rod is set on the same plane as the base. The sliding platform suspended on the guide rods and having a lens set within a hole on the sliding platform, the lens aligned with a light transmissive hole of the base. The driving device set on the base to drive the sliding platform, the limiting device set on the base to limit the displacement range of the sliding platform. The components of the driving structure are simplified, of a greatly reduced thickness, are easy to assembly, as well as lowering cumulative tolerances.
1. An optical anti-shake driving structure, comprising:
a base comprising at least two guide rods, wherein the guide rods are along the same plane on the base;
a sliding platform suspended on the guide rods and having a lens set within a hole on the sliding platform, the lens aligned with a light transmissive hole of the base;
a driving device set on the base to drive the sliding platform; and
a limiting device set on the base to limit the displacement range of the sliding platform, the limiting device comprising a positioning pillar, and a positioning hole, the positioning pillar being set on the surface of the base, the positioning hole being set on the sliding platform, the positioning pillar being located within the positioning hole.
2. The optical anti-shake driving structure as claimed in claim 1 , wherein the light transmissive hole passes through the base, allowing light to pass through the light transmissive hole.
3. The optical anti-shake driving structure as claimed in claim 2 , wherein the plane of the guide rod is perpendicular to a light path of light passing through the light transmissive hole.
4. The optical anti-shake driving structure as claimed in claim 1 , wherein the two guide rods comprises a bearing seat set through the base, the bearing seat is supported at the two ends of the guide rod, so that the guide rods are maintained on the same plane; the guide rod is located on the surface of the base, wherein the guide rod is supported by the bearing seat, so a gap is set between the guide rod and the base, the height of the gap is allowed to set a sliding platform.
5. The optical anti-shake driving structure as claimed in claim 1 , wherein a hole is set on the sliding platform, the hole having a lens.
6. The optical anti-shake driving structure as claimed in claim 1 , wherein the sliding platform comprising a first plane and a second plane, the first plane facing the surface of the base, the second plane is located at a rear surface of the first plane.
7. The optical anti-shake driving structure as claimed in claim 6 , wherein the second plane comprises at least three hooks, the hook being vertically erected on the second plane, a hook end of the hook having a spacing between the second plane, width of the spacing being able to accommodate the guide rod, the hook separately hooks on the guide rod.
8. The optical anti-shake driving structure as claimed in claim 7 , wherein a hook end of the hook is a prism, a contiguous angle part of the prism being suspended on the cylindrical rod of the guide rod.
9. The optical anti-shake driving structure as claimed in claim 8 , wherein the hook end of the hook is a triangular prism, using one of the contiguous angles hooked on the guide rod.
10. The optical anti-shake driving structure as claimed in claim 1 , wherein the driving device comprising at least two coils, at least two magnets and at least two Hall sensors, one of the coils and one of the Hall sensors is set on the surface of the base, the magnet is set on the first plane.
11. The optical anti-shake driving structure as claimed in claim 1 , wherein the two guide rods which are set on the surface of the base use two coils, two magnets and two Hall sensors; one of the coils, the magnets 164 and the Hall sensors are set to oppose the guide rod, so that the two guide rods each have an axial driving element.
12. The optical anti-shake driving structure as claimed in claim 11 , wherein the shape of the positioning hole is rectangular.
13. The optical anti-shake driving structure as claimed in claim 1 , wherein the shape of the positioning hole effectively limits the scope of displacement of the sliding platform.