Optical device and method for examining an object

Abstract

The present invention relates to an optical device for examining an object (16), comprising: a housing (24); an optical unit (26), arranged in the housing (24), for incident light; a sensor unit (28) having at least one image sensor (30, 32) arranged in the housing (24); a data processing unit (34) which is coupled to the sensor unit (28) and evaluates image signals from the at least one image sensor (30, 32); an illumination unit (42), arranged at least partially on or in the housing (24), for emitting grid light toward the object (16), wherein: by means of grid light reflected by the object (16) and reference light inside the housing, a three-dimensional point grid and associated reference datasets indicative of lateral information and depth information are provided using digital optical holography; by means of the device (10; 100; 120; 140), a relative movement of the device (10; 100; 120; 140) and the objective (16) is sensed, and associated movement information in the lateral and/or depth direction is created; object light emanating from the object (16) is sensed and, in temporal succession, a respective image dataset (35) is created which is registered relative to the reference dataset in order to create a 3D surface dataset; overlapping regions of two or more successive image datasets (35) are identified on the basis of the movement information, and the overlapping regions are smoothed by integrating the associated image signals, in particular without loss of detail. The invention also relates to a method.

Dependencies are inferred from the claim text.