It must be kept in mind, that using more optical power comes at a price, and the overall costs of a
TOF camera system can significantly rise by adding more LED or lasers. To avoid this, burst
operation can be implemented. In burst operation, the light sources have the same average power
and therefore the same number of light emitting elements, but higher peak power than in
continuous operation. The shorter exposure time leads to the same number of signal electrons but
less noise electrons due to less accumulated background light electrons .