| 摘要 |
A device for optically sensing a specimen with a large depth of field comprises a lighting module (1) which illuminates a zone of the specimen during a predetermined measurement period with a pattern whose phase is modified in time during the measurement period, generating a specimen light to which a corresponding time-variable phase is imparted, a detection module (4) having a space-resolving detection zone (8) which records the specimen zone and has multiple recording pixels (12), two analysis channels (13, 14) which can be connected to the recording pixels (12), and an analysis unit (25) connected to both analysis channels (13, 14), as well as a control unit which, during the measurement period, connects each recording pixel in synchrony with the phase of the detected specimen light to the two analysis channels (13, 14), alternatively, in such a way that the detected specimen light is divided into two portions phased in relation to one another, and the analysis unit calculates an optical split-image of the specimen zone on the basis of the two phased portions supplied to the analysis channels. |
