| 摘要 |
<p>The invention relates to an image acquisition device enabling a dental radiological image to be obtained, the device comprising a matrix sensor (C) having integrated therein a plurality of image acquisition photodiodes (DA) sensitive to irradiation and at least one detection photodiode (DD) also sensitive to irradiation, the device also comprising a control module (M) for controlling the sensor (C) and suitable for periodically reading the detection photodiode (DD) and for causing the sensor (C) to change over (SBA) between at least two modes: a standby mode and an acquisition mode (ACQ). According to the invention, the detection photodiode (DD) is suitable for delivering a periodic output signal (NDD) to the control module (M), including during irradiation and image acquisition (ACQ) by the acquisition photodiodes (DA), which periodic output signal (NDD) has a value that is representative of the instantaneous received energy, and the control module (M) makes use of this periodic output signal (NDD) to analyze the energy received during acquisition (ACQ).</p> |
