An optical lens assembly comprising: an image sensor (IMG, IMG2); a plurality of lenses arranged from an object side toward an image side where said image sensor (IMG, IMG2) is disposed, the optical lens assembly further comprising: a bending unit configured to reflect light input from the object side in a first direction toward a second direction; and a first lens group having negative refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power, which are arranged in the second direction in order from the bending unit toward the image side, wherein the first lens group comprises a first lens having negative refractive power and disposed adjacent to the bending unit and a second lens having positive refractive power, the second lens group comprises one or more lenses that are configured to move in the second direction for zooming from a wide angle position to a telephoto position; the third lens group is configured to move in the second direction for zooming from the wide angle position to the telephoto position and comprises a third lens having positive refractive power and a fourth lens having negative refractive power in order from the bending unit toward the image side, wherein the fourth lens is the lens closest to the image side in the optical lens assembly, and an effective diameter of each of the first lens, the second lens, the one or more lenses included in the second lens group, the third lens, and the fourth lens is less than a diameter of an image circle of the image sensor characterized in that the optical lens assembly satisfies a following inequality: Lv / V < 0.9, wherein "V" denotes a length of a short side of the image sensor at a wide angle position, and "Lv" denotes an effective diameter of light rays when the light rays pass through the image side surface of the fourth lens and arrive at an end point of the short side of the image sensor at the wide angle position. an image sensor (IMG, IMG2); a plurality of lenses arranged from an object side toward an image side where said image sensor (IMG, IMG2) is disposed, the optical lens assembly further comprising: a bending unit configured to reflect light input from the object side in a first direction toward a second direction; and a first lens group having negative refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power, which are arranged in the second direction in order from the bending unit toward the image side, wherein the first lens group comprises a first lens having negative refractive power and disposed adjacent to the bending unit and a second lens having positive refractive power, the second lens group comprises one or more lenses that are configured to move in the second direction for zooming from a wide angle position to a telephoto position; the third lens group is configured to move in the second direction for zooming from the wide angle position to the telephoto position and comprises a third lens having positive refractive power and a fourth lens having negative refractive power in order from the bending unit toward the image side, wherein the fourth lens is the lens closest to the image side in the optical lens assembly, and an effective diameter of each of the first lens, the second lens, the one or more lenses included in the second lens group, the third lens, and the fourth lens is less than a diameter of an image circle of the image sensor characterized in that the optical lens assembly satisfies a following inequality: Lv / V < 0.9, wherein "V" denotes a length of a short side of the image sensor at a wide angle position, and "Lv" denotes an effective diameter of light rays when the light rays pass through the image side surface of the fourth lens and arrive at an end point of the short side of the image sensor at the wide angle position. a bending unit configured to reflect light input from the object side in a first direction toward a second direction; and a first lens group having negative refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power, which are arranged in the second direction in order from the bending unit toward the image side, wherein the first lens group comprises a first lens having negative refractive power and disposed adjacent to the bending unit and a second lens having positive refractive power, the second lens group comprises one or more lenses that are configured to move in the second direction for zooming from a wide angle position to a telephoto position; the third lens group is configured to move in the second direction for zooming from the wide angle position to the telephoto position and comprises a third lens having positive refractive power and a fourth lens having negative refractive power in order from the bending unit toward the image side, wherein the fourth lens is the lens closest to the image side in the optical lens assembly, and an effective diameter of each of the first lens, the second lens, the one or more lenses included in the second lens group, the third lens, and the fourth lens is less than a diameter of an image circle of the image sensor characterized in that the optical lens assembly satisfies a following inequality: Lv / V < 0.9, wherein "V" denotes a length of a short side of the image sensor at a wide angle position, and "Lv" denotes an effective diameter of light rays when the light rays pass through the image side surface of the fourth lens and arrive at an end point of the short side of the image sensor at the wide angle position.