3D time-of-flight camera and method of detecting three-dimensional image data

摘要

A 3D time-of-flight camera for detecting three-dimensional image data from a detection zone is provided, the 3D time-of-flight camera comprising an illumination unit for transmitting transmission light that is modulated with a first modulation frequency; an image sensor having a plurality of reception elements for generating a respective reception signal; a plurality of demodulation units for demodulating the reception signals with the first modulation frequency in order to obtain sampled values; and a control and evaluation unit that is configured to control the illumination unit and/or the demodulation units for a number of measurement repetitions, in each case with a different phase shift between the first modulation frequency for the transmission light and the first modulation frequency for the demodulation, and that is configured to determine a distance value from the sampled values obtained per light reception element by the measurement repetitions. In this respect, the control and evaluation unit is furthermore configured to change the number of measurement repetitions.