| 主权项 |
1. A sensor arrangement, comprising:
an input surface having at least one light-permeable part surface; an optical sensor that is disposed below the at least one light-permeable part surface; a first capacitive sensor that is disposed below the input surface; an evaluation unit coupled to the optical sensor and configured to carry out a light-permeability measurement of an object located on the input surface using the optical sensor; and a device for evaluating a change in capacitance of the first capacitive sensor, wherein the device is connected to the first capacitive sensor and configured to generate a first output signal if there is a change in capacitance, wherein the evaluation unit is further configured to generate a presence signal if a measured light permeability determined falls below a predetermined value, and wherein, if the light permeability is determined to fall below the predetermined value, the evaluation unit is further configured to evaluate the first output signal and the presence signal and, if both signals are present, to generate a validity signal. |
