| 摘要 |
<p>A distance camera for determining a distance value Rabs between an object and the distance camera within a predetermined distance range comprisesw at least one photo element (9), a trigger generator for activating the photo element (9) during a temporal integration gate (30, 31), a light source for illuminating the object with light pulses (28) having a predetermined temporal intensity profile with a duration Tp, and an intensity sensor for determining the intensity Ip (6) of the light pulses (29) arriving on the photo element (9), wherein the integration gate (30) has a predetermined delay to the light pulse emission start point in time in order to capture the light pulses (29) back reflected from the object such that either To or To+Tp is between an integration start point in time T1b (20) of the integration gate and an integration end point in time T1e (21) of the integration gate (30), with To being the first point in time when the light pulse (29) arrives on the photo element (9), wherein the photo element (9) is adapted to output a signal value U (25) at the integration end point in time T1e (21) with the signal value U (25) depending on the intensity Ip (6) and the duration of the light pulse (29) arriving on the photo element (9) during its activation, wherein the camera comprises a memory unit for storing predetermined parameters (10) of an explicit correction value function ? = f(Ip) (5) for the photo element (9), and an evaluation unit for determining a raw distance value Rraw from the signal value U (25) and the intensity Ip (6) and adding the raw distance value Rraw and the correction value ?(?p) (7) so as to obtain the distance value Rabs.</p> |
