Patent ID: 7600872

Claim:
Spectacle lens device comprising at least one electrically adaptive area, for electrically controlling optical properties of the spectacle lens device, the spectacle lens device being configured so that optical properties in a predetermined or predeterminable control area are electrically controllable essentially independently of optical properties in a surrounding area; wherein the control area and the surrounding area are sub-areas of the electrically adaptive area and do not have any common areas, further comprising an eye tracking device configured to find an eye's line of sight by detecting eye position and/or movement and to determine a visual point corresponding to an intersecting point of the line of sight with an eye-side surface of the electrically adaptive area, and the position of the control area being controllable so that the control area includes the visual point, and a control unit configured to control the control area so that in a standardized operating position of the spectacle lens device a projection of the control area on a surface of the vertex sphere has essentially an area ranging from about 10 mm 2 to 100 mm 2 , where the vertex sphere is a sphere, a center point of which coincides with an eye's point of rotation and a radius of which is equal to the distance of the eye's point of rotation from the vertex in a standardized operating position of the spectacle lens device.