Patent ID: 8670188
Filing Date: 2014-03-11
Classification: G02B,G03B

Abstract:
1. A zoom lens barrel assembly comprising: a first zoom ring for supporting a first lens group and comprising a first protrusion; a first cylinder comprising a second protrusion, a guide groove formed in an inner wall surface of the first cylinder, and an exterior diameter smaller than an interior diameter of the first zoom ring, and being rotatable and movable in an axial direction to be insertable into the first zoom ring; a second zoom ring for supporting a second lens group, comprising a third protrusion connected to the guide groove of the first cylinder, and disposed within the first cylinder to be movable in the axial direction; a guide ring disposed around the first zoom ring, and comprising a first guide slot, through which the first protrusion passes, to guide the first protrusion to move in the axial direction, and a second guide slot, through which the second protrusion passes, to guide the first cylinder to rotate and move in the axial direction; a second cylinder rotatably disposed around the guide ring, moving with the guide ring in the axial direction, comprising a first groove portion, into which an end of the first protrusion is connected, to guide the first zoom ring to rotate and move in the axial direction, and a second groove portion, into which an end of the second protrusion is connected, to guide the second protrusion to move in the axial direction; and an external cylinder disposed around the second cylinder, supporting the second cylinder to be rotatable, and supporting the guide ring to be movable in the axial direction.