Patent ID: 7385687

Claim:
A device for two-dimensionally inspecting layers of an unassembled substrate that has at least one printed-on layer, said device comprising: a guide carrier in which said unassembled substrate that is to be two-dimensionally inspected is disposed; an inspection head that is movable in at least two directions relative to said guide carrier, wherein said inspection head is provided with an illumination mechanism and a detection device that is adapted to detect electromagnetic radiation reflected from said unassembled substrate and to convey corresponding signals to an evaluation device for detecting errors of said substrate layer, and wherein said detection device is provided with a digital camera having optics for detecting a definition of less than 200 microns on said unassembled substrate; and a movement mechanism for controlling relative movement between said guide carrier and said inspection head during an image-taking cycle during which sequential or overlapping individual images can be joined together to form an overall image of said unassembled substrate.