Patent ID: 9423245
Filing Date: 2016-08-23
CPC Classification: G01B,G01N

Claim Text:
1. An arrangement for optically measuring a surface of an target object, comprising: a diffusive, semi-transparent illumination structure defining a hollow surface shape configured to surround the target object at least partially, the surface being further provided with at least two apertures, a number of light sources optically coupled to the illumination structure for illuminating the target object via the surface of the illumination structure, at least two imaging devices, each configured to image the target object via an aperture of said at least two apertures, and a control entity configured to instruct said number of light sources to form an image sequence of predetermined illumination patterns on the surface of the illumination structure to illuminate the target object with said patterns projected via said surface, to instruct the at least two imaging devices to obtain an image of the target object relative to each illumination pattern, and to derive, through the utilization of said patterns utilized and images obtained, a predetermined surface-related property of the target object, wherein at least one of said two apertures is associated with a lens arrangement comprising a number of lenses, and wherein the lens arrangement further comprises a body portion facing the aperture with a beveled edge to reduce the shadowing effect of the lens arrangement relative to the illumination structure.