Patent ID: 8203599

Claim:
A three-dimensional (3D) image display apparatus comprising: a display; a photographing unit comprising: a camera having an optical axis, a first light source comprising one or more first lamps disposed such that a center of the first light source is disposed on the optical axis of the camera, and a second light source comprising one or more second lamps disposed such that a center of the second light source is separated from the optical axis of the camera, wherein the camera generates a first image of an observer using light emitted from the first light source, and generates a second image using light emitted from the second light source; an eye information detection unit which detects eye information of the observer based on the first and second images and determines a position of the observer based on the detected eye information; and a 3D image adjustment unit which adjusts a 3D image, which will be displayed on the a display, based on the determined position of the observer, wherein the eye information detection unit calculates a distance by which the observer deviates from an orthoscopic position at which the observer can perceive a 3D image based on the detected eye information and determines the position of the observer based on the calculated distance, and the 3D image adjustment unit adjusts the 3D image according to the calculated distance.