Patent ID: 8456756
Filing Date: 2013-06-04
Classification: G02B

Abstract:
1. A zoom lens barrel assembly comprising: a first zoom ring having a cylindrical shape, and comprising an inlet portion formed in a boundary of one end thereof and a first protrusion protruding to the outside; a guide ring disposed around the first zoom ring, and comprising a first guide hole extending in an axial direction, through which the first protrusion passes, thereby movably supporting the first zoom ring in the axial direction, and a second guide hole extending in a circumferential direction; and a first cylinder disposed in the first zoom ring, the first cylinder moving and rotating between a position where the first cylinder is accommodated in the first zoom ring and a position where the first cylinder moves away from the first zoom ring in the axial direction, the first cylinder comprising a second protrusion protruding to the outside and passing through the second guide hole, the second protrusion accommodated in the inlet portion at the position where the first cylinder is accommodated in the first zoom ring, and the second protrusion pressing one end of the inlet portion when the first cylinder moves from the position where the first cylinder is accommodated in the first zoom ring to the position where the first cylinder moves away from the first zoom ring in the axial direction.