Camera actuator, and camera device comprising same
A camera actuator, including a housing including a first side part and a second side part corresponding to the first side part; a first lens assembly and a second assembly lens which move in an optical axis direction on the basis of the housing; a driving part which moves the first lens assembly and the second lens assembly; a guide part which is disposed adjacent to at least one of the first side part or the second side part; and a ball located in the guide part. At least one of the first lens assembly or the second lens assembly includes a recess which faces the guide part and on which the ball is seated, and the recess may include a first stepped part disposed along an edge thereof and a second stepped part disposed inside the first stepped part.
1 . A camera actuator, comprising:
a housing including a first side portion and a second side portion corresponding to the first side portion;
a first lens assembly and a second lens assembly that move in an optical axis direction with respect to the housing;
a driving unit configured to move the first lens assembly and the second lens assembly;
a guide unit disposed adjacent to at least one of the first side portion or the second side portion; and
at least one ball positioned at the guide unit, wherein at least one of the first lens assembly or the second lens assembly includes a recess which faces the guide unit and in which the at least one ball is seated, and wherein the recess includes a first stepped portion recessed from a surface of the at least one of the first lens assembly or the second lens assembly and disposed along an edge of the recess, and a second stepped portion recessed from a first bottom surface of the first stepped portion so as to be disposed inside of the first stepped portion.
2 . The camera actuator of claim 1 , wherein the first stepped portion has a closed loop shape.
3 . The camera actuator of claim 1 , wherein a maximum width of the first stepped portion is larger than a maximum width of the second stepped portion.
4 . The camera actuator of claim 1 , wherein the at least one ball includes a first ball disposed on an upper side portion of the first lens assembly, and a second ball disposed on a lower side portion thereof.
5 . The camera actuator of claim 4 , wherein the first ball and the second ball are seated in and come into contact with the second stepped portion.
6 . The camera actuator of claim 1 , wherein a height of the first stepped portion is smaller than a height of the second stepped portion.
7 . The camera actuator of claim 1 , wherein the first stepped portion includes a first side surface and the first bottom surface in contact with an inner side of the first side surface, and wherein the second stepped portion includes a second side surface in contact with an inner side of and recessed from the first bottom surface, and a second bottom surface in contact with an inner side of the second side surface.
8 . The camera actuator of claim 7 , wherein the first side surface surrounds the first bottom surface, the second side surface, and the second bottom surface.
9 . The camera actuator of claim 1 , wherein a length of the recess in a longitudinal direction is larger than a length thereof in a width direction.
10 . The camera actuator of claim 9 , comprising protruding portions disposed in the longitudinal direction with the recess interposed therebetween.