A device for optically capturing objects has a support surface (1) for an object, a light source (4) and a capturing means (5) for capturing the positioned object and for converting the image of the captured object into electrical signals. The light source (4) and the capturing means (5) are each arranged in a specific position relative to the support surface (1). The support surface (1) has a section (6) provided with a curvature determined by the two positions. Said section is arranged so that illuminating beams (2, 3) emitted by the light source can be reflected by the support surface (1) in the direction of the capturing means 5 substantially only in a diffuse manner.