| CPC G03B 13/36 (2013.01) [G03B 3/02 (2013.01); G03B 13/18 (2013.01); G03B 2217/002 (2013.01)] | 5 Claims |
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1. A frame assembly applied to an optical actuator comprising a base and a carrier provided to be movable in an optical axis direction with respect to the base through a ball, the frame assembly being configured to constitute the base or the carrier and comprising:
a first rail shaft and a second rail shaft formed of a metal, respectively; and
a frame formed by injecting a resin into a mold into which the first rail shaft and the second rail shaft are inserted,
wherein:
at least a part of each of the first rail shaft and the second rail shaft configured to come into contact with the ball is exposed through one surface of the frame; and
a plurality of first shaft position alignment holes arranged in a longitudinal direction of the first rail shaft to expose the first rail shaft therethrough and a plurality of second shaft position alignment holes arranged in a longitudinal direction of the second rail shaft to expose the second rail shaft therethrough are formed in a remaining surface of the frame,
wherein the frame comprises an upper surface and a lower surface spaced apart from each other in the optical axis direction, and an inner circumferential surface and an outer circumferential surface spaced apart from a direction perpendicular to the optical axis and configured to connect the upper surface and the lower surface,
wherein one of the inner circumferential surface and the outer circumferential surface comprises the one surface of the frame, and a remaining one comprises the remaining surface of the frame,
wherein each of the first shaft position alignment holes and the second shaft position alignment holes is in a form of a recess on the remaining surface or the frame having a depth configured not to reach the one surface of the frame and an opening is formed on a bottom surface of the recess so as to expose the first and second rail shafts, respectively.
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