Device for generating backscatter histogram data (RHDO) for determining diffuse backscatter in an optical transit time measurement, wherein the device comprises a receiving matrix with several light-detecting receiving elements, wherein the optical transit time measurement is based on TCSPC, time correlated single photon counting, so that light pulses are emitted periodically and the measurement time until reception is measured by one of the light-detecting receiving elements, wherein the measurement time is divided into time intervals, wherein each of the light-detecting receiving elements is configured for detecting light and for generating an electrical signal in response thereto, wherein the electrical signal is assigned to one of the time intervals using a time-to-digital converter, wherein time-correlated histogram data is generated by counting the electrical signals that are assigned to a time interval, wherein the time-correlated histogram data comprises signal contributions from diffuse backscatter, wherein the device comprises at least one histogram accumulation unit (HAO to HAX) which has a plurality of signal inputs for receiving the time-correlated histogram data (ZHDO to ZHDP), wherein the histogram accumulation unit (HAO to HAX) is configured to generate backscatter histogram data (RHDO) based on the time-correlated histogram data (ZHDO to ZHDP) received at the signal inputs, wherein the histogram accumulation unit (HAO to HAX) the backscatter histogram data (RHDO) are generated by adding the received time-correlated histogram data (ZHDO to ZHDP), characterized in that the histogram accumulation unit (HAO to HAX) is further configured not to take into account received time-correlated histogram data (ZHDO to ZHDP) of time intervals which are above a certain time threshold for the generation of the backscatter histogram data (RHDO).. wherein the device comprises a receiving matrix with several light-detecting receiving elements, wherein the optical transit time measurement is based on TCSPC, time correlated single photon counting, so that light pulses are emitted periodically and the measurement time until reception is measured by one of the light-detecting receiving elements, wherein the measurement time is divided into time intervals, wherein each of the light-detecting receiving elements is configured for detecting light and for generating an electrical signal in response thereto, wherein the electrical signal is assigned to one of the time intervals using a time-to-digital converter, wherein time-correlated histogram data is generated by counting the electrical signals that are assigned to a time interval, wherein the time-correlated histogram data comprises signal contributions from diffuse backscatter, wherein the device comprises at least one histogram accumulation unit (HAO to HAX) which has a plurality of signal inputs for receiving the time-correlated histogram data (ZHDO to ZHDP), wherein the histogram accumulation unit (HAO to HAX) is configured to generate backscatter histogram data (RHDO) based on the time-correlated histogram data (ZHDO to ZHDP) received at the signal inputs, wherein the histogram accumulation unit (HAO to HAX) the backscatter histogram data (RHDO) are generated by adding the received time-correlated histogram data (ZHDO to ZHDP), characterized in that the histogram accumulation unit (HAO to HAX) is further configured not to take into account received time-correlated histogram data (ZHDO to ZHDP) of time intervals which are above a certain time threshold for the generation of the backscatter histogram data (RHDO)..