Device and method for determining optical parameters

A device for determining optical parameters of a user having

• at least one image recording unit configured and arranged to generate image data of at least sub-sections of the head of the user;
• at least one pattern projection unit configured and arranged to project predetermined pattern data on at least sub-sections of the head of the user;
• a data processing unit having a user data determination unit configured to determine user data of at least one sub-section of the head or at least one sub-section of a system of the head and a pair of spectacles of the user situated thereon in the wearing position on the basis of the generated image data, taking the projected pattern data into consideration, the user data comprising location information in the three-dimensional space of predetermined points of the sub-section of the head or the sub-section of the system, and
• a parameter determination unit configured to determine at least one part of the optical parameters of the user on the basis of the user data;
• a data output unit configured to output at least one part of the determined optical parameters of the user;
• wherein, in an operating position, the at least one image recording unit is situated inside a spatial area which is enclosed by a cone having a predetermined aperture angle of less than 90°, and apex of the cone being situated in the surroundings of a predetermined reference point and an axis of the cone being situated parallel to a predetermined operation direction, the zero viewing direction of the user corresponding to the predetermined operation direction.

A method for determining optical parameters of a user comprising:

• generating image data of at least sub-sections of the head of the user from at least two different recording directions inside a spatial area which is enclosed by a cone having a predetermined aperture angle of less than 90°, and apex of the cone being situated in the surroundings of a predetermined reference point and an axis of the cone being situated parallel to a predetermined operation direction, the zero viewing direction of the user corresponding to the predetermined operation direction;
• determining user data of at least one sub-section of the head or at least one sub-section of a system of the head and a pair of spectacles of the user situated thereon in the wearing position on the basis of the generated image data, the user data comprising location information in the three-dimensional space of predetermined points of the sub-section of the head or the sub-section of the system;
• determining at least one part of the optical parameters of the user on the basis of the user data, and
• outputting at least one part of the determined optical parameters of the user;
• wherein, in the operating position, the image recording units are situated inside a spatial area which is enclosed by a cone having a predetermined aperture angle of less than 90°, the cone apex of the cone being situated in the surroundings of a predetermined reference point and the cone axis being situated parallel to a predetermined direction, the zero viewing direction of the user corresponding to the predetermined direction in operation.