| 摘要 |
A device and a method for tracking an eye-gaze of an observer. A deep blue or violet light source is used to emit light to eye, particularly to the retina. The deep blue light is partially reflected and partially absorbed by the retina. The absorption is most prominent around the fovea, the area of sharp vision, because of the pigment which protects the fovea from short wavelength radiation. Thus the device and method of tracking eye-gaze according to the invention comprises emitting light having a certain wavelength and transferring the light to the retina of an eye. The wavelength of the light being such as to make the fovea of the eye resolvable. The method further comprises detecting light that is reflected from the eye to form detection information including the resolvable fovea, and mapping the detection information to a predetermined surface, the surface being located at a distance from the eye, the location of the fovea on the surface forming an eye-gaze point. |
