| 摘要 |
The invention concerns a device and a method for examining magnetic properties of objects, in particular of sheet material such as for example bank notes. Therein the invention proceeds from a device ( 1 ) and a method for examining magnetic properties of objects (BN), in particular of sheet material such as for example bank notes, with a magneto-optical layer ( 42 ) having magnetic domains, the optical properties of the magneto-optical layer ( 42 ) being influenceable by the magnetic properties of the object (BN) to be examined, at least one light source ( 2 ) for the generation of light incident upon the magneto-optical layer ( 42 ), and at least one sensor ( 6 ) for the reception of light which is transmitted and/or reflected by the magneto-optical layer ( 42 ), with a magnetic field (B<SUB>∥</SUB>) in the area of the magneto-optical layer ( 42 ) which extends substantially parallel to the surface of the magneto-optical layer ( 42 ).
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