Apparatus for acquiring three-dimensional information of objects and surfaces for an artificial vision system for the automatic optical inspection of the visual quality of an underlying object

Abstract

The device (1) includes an upper camera (10) and a plurality of side cameras (20) arranged around the upper camera (10) along a vertical optical axis (Z); a top lighting system for the object (100) including a plurality of projectors (30a, 30b, 30c, 30d) of different colors or wavelengths; and an electronic controller adapted to instruct the simultaneous emission of light beams (32a, 32b, 32c, 32d) of different colors or wavelengths from the projectors (30a, 30b, 30c, 30d). Each camera (10, 20) is provided with a spatial separation means (120) for reflecting light beams (32'a, 32'b, 32'c, 32'd) of different colors or wavelengths reflected from an object (100), and is provided with multiple optical sensors (110a, 110b, 110c, 110d) configured to simultaneously acquire the reflecting light beams (32'a, 32'b, 32'c, 32'd) of different colors or wavelengths separated by the separation means (120). The apparatus (1) comprises an upper camera (10) and a plurality of side cameras (20) arranged around the vertical optical axis (Z) of the upper camera (10); a top-lighting system for the object (100) comprising a plurality of light projectors (30a, 30b, 30c, 30d) of different colors or wavelengths; and an electronic controller adapted to command the simultaneous emission of light beams (32a, 32b, 32c, 32d) of different colors or wavelengths from the light projectors (30a, 30b, 30c, 30d), each camera (10, 20) is provided with spatial separation means (120) for the reflected light beams (32’a, 32’b, 32’c, 32’d) of different colors or wavelengths reflected from the object (100), and with a plurality of optical sensors (110a, 110b, 110c, 110d) configured to simultaneously acquire the reflected light beams (32’a, 32’b, 32’c, 32’d) of different colors or wavelengths separated by the separation means (120).

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