a handheld measuring device for optical distance measurement includes a transmitting device , a receiving device , an evaluation device , and a homogenizing device . the transmitting device is configured to transmit periodically modulated optical measurement radiation toward a target object . the receiving device is configured to detect optical measurement radiation returning from the target object . the evaluation device is configured to receive and evaluate detection signals of the receiving device . the evaluation device comprises a plurality of accumulation devices configured to accumulate detection signals . the evaluation device conducts detection signals during a sampling time window from a plurality of sampling time windows temporally schematically changeably to an assigned accumulation device from the plurality of accumulation devices , such that the accumulation device accumulates the detection signals during the sampling time window .