Abstract: The present disclosure relates to an apparatus (100) for passive scanning of an object. The apparatus comprises a distance sensing unit (110) adapted to measure distances to a plurality of points of the object, an orientation sensing unit (120) adapted to determine orientations of the distance sensing unit (110), and a processor (140) adapted to derive information about the object or a scene in which the object is used based on the measured distances and orientations of the distance sensing unit (110).

Abstract: The present invention relates to a distance measuring system. The distance measuring system comprises a distance measuring sensor, a memory unit and a processing unit. The distance measuring sensor is adapted and arranged to measure viewing distances between a subject's eyes and one or more objects. The memory unit is adapted to store the measured viewing distances in a set of measured viewing distances. The processing unit is adapted to determine a statistical distribution of the measured viewing distances from the set of measured distances.