| 摘要 |
The present invention relates to a household appliance (10) such as an oven, a refrigerator, or a washing machine. The household appliance comprises a transparent casing element (12) and a fingerprint sensor (20) mounted to the inside of an exterior surface of said casing element (12). The sensor comprises a light source (21; 21′; 21″; 21′″) emitting light for which said casing element (12) is transparent, a detector (23; 23″; 23′″) for detecting reflected light emitted from said light source (21; 21′; 21″; 21′″) and a light guiding means (22; 22′; 22″; 22′″; 22b′″) for guiding emitted light from said light source (21; 21′; 21″; 21′″) towards the casing element (12) and guiding light reflected at the exterior surface of the casing element (12) to the detector (23; 23″; 23′″). Thereby detection of a fingerprint image through said casing element (12) is rendered possible.
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