The invention relates to a spectacle-type device (1) in which a full image can be depicted in a reliable manner by overlapping the first partial image (α3) and the second partial image (α4), wherein a correct full image can be perceived by the operator (2), and an action can be carried out with reliability when at least two items of image information coincide. The invention also relates to a method for depicting a full image and/or for carrying out an action using a spectacle-type device.