| 摘要 |
An optical mover with functions of nanometer fine adjustment and micrometer coarse adjustment is mainly used to align two optical elements for connecting two optical elements, such as connection of two optical fibers, connection of one optical fiber with a photo diode, or connection of one optical fiber and one optical waveguide. In using, one optical element is placed upon the supporting seat for fine position adjustment, and another optical element is fixed on an external retainer for aligning to the former optical element on the supporting seat. A coarse control button is firstly used to coarsely adjust the position of the former optical element to approximately align to the later optical element. Then a fine-adjusting button is used to fine adjust the position therebetween so as to well align the two optical elements to a desire level for further operation, such as connecting the two elements. |
| 主权项 |
1. An optical mover with functions of nanometer fine adjustment and micrometer coarse adjustment, comprising:
a fine-adjusting button including a fine screwing ring, a first fixing rod, and a first middle shaft; the fine screwing ring can screwedly move along the first fixing rod to push the first middle shaft to move axially; the fine-adjusting button using a screwing operation to increase precisions in axial movement; a supporting seat having an inner flange at a bottom side thereof; a lower side of the supporting seat being formed as a hollow space; the inner flange dividing the hollow space into a front channel and a rear channel; a fine moving shaft having a front end resisting against the first middle shaft; the first middle shaft being capable of driving the fine moving shaft; the fine moving shaft passing through the front channel and the rear channel; a weak spring located within the front channel; one end of the weak spring being retained to a protrusion at one end of the fine moving shaft and winding around the fine moving shaft; in that, movement of the fine moving shaft compresses or expands the weak spring; a hollow push cylinder being installed in the front channel below the supporting seat; another end of the weak spring resisting against one end of the hollow push cylinder and another end of the hollow push cylinder resisting against the inner flange of the supporting seat; the compression or releasing of the weak spring will cause the hollow push cylinder to move forwards or backwards; the fine moving shaft being movable with respect to the hollow push cylinder and the inner flange of the supporting seat so that the movement of the fine moving shaft will not directly move the hollow push cylinder and the inner flange of the supporting seat; in operation, the fine moving shaft moves so as to compress or extend the weak spring such that the weak spring will push the hollow push cylinder to move forwards or backwards, the hollow push cylinder rests against the inner flange of the supporting seat, such that the movement of the hollow push cylinder will drive the supporting seat to move; a strong spring being installed in the rear channel below the supporting seat; one end of the strong spring resisting against the inner flange of the supporting seat and another end of the strong spring being retained to a fixed wall of a rear stop; wherein an elastic coefficient of the strong spring is much larger than that of the weak spring; a coarse control button including a coarse screwing ring, a second fixing rod and a second middle shaft; the coarse screwing ring moving along the second fixing rod to push the second middle shaft to move axially; the coarse screwing ring serving to increase the precision in control of the optical mover; the moving track being converted from a rotation to straight line such that the movement being controlled by a level of micrometers; and a base being formed by a seat and an upper casing covering upon the base; the base having one end resisting against the second middle shaft of the coarse control button; when the coarse control button screwedly moves forwards or backwards, the base moves therewith; a lower inner side of the upper casing being a hollow space; the upper casing having an upper opening, a front opening and a rear opening; the supporting seat being located within the upper opening of the upper casing; a front side and a rear side of the supporting seat being flexible connected to edges of the upper opening so that the supporting seat being movable slightly with respect to an upper surface of the base such that the supporting seat moving within nanometer level due to a push from the fine moving shaft and the hollow push cylinder, but the base being motionless; an upper surface of the supporting seat exposing out from the upper opening of the hollow space so that in fine adjustment, the supporting seat moves within the upper opening along a moving direction of the fine moving shaft; a contact point between the fine moving shaft and the first middle shaft of the fine-adjusting button being near the front opening of the upper casing. |
