1. Field
The following description relates to an optical imaging system including lenses.
2. Description of Related Art
A plurality of optical imaging systems are mounted in a portable terminal, such as a camera, a mobile device, or a tablet. For example, the optical imaging systems are mounted on each of a front surface and a rear surface of the portable terminal.
The optical imaging system mounted on the rear surface of the portable terminal is used to photograph a subject positioned at a far distance from the portable terminal. Conversely, the optical imaging system mounted on the front surface of the portable terminal is used to photograph a subject positioned at a near distance from the portable terminal. In particular, the optical imaging system mounted on the front surface of the portable terminal generates an optical distortion phenomenon such as a barrel distortion. Therefore, there is a need to develop an optical imaging system capable of reducing the optical distortion phenomenon appropriate to photograph a subject at a short distance.