Distance measuring device

An optical device including:

• an optical radiation source configured to emit optical pulses;
• a receiver unit configured to receive reflected optical pulses;
• a time-measuring unit configured to generate an elapsed time from a point in time related to emission of an optical pulse from the optical radiation source;
• at least one control signal generator unit configured to generate at least one control signal being dependent on the elapsed time;
• and
• a control unit configured to adjust, during a travel time of the emitted optical pulse from the optical device to a target and back, at least one parameter of the receiver unit affecting the dynamic range of the receiver unit based on the generated at least one control signal.

An optical device including:

• an optical radiation source configured to emit optical pulses;
• a receiver unit configured to receive reflected optical pulses;
• and
• a control unit configured to adjust as a function of time, for an optical pulse emitted from the optical radiation source, at least one parameter affecting the dynamic range of the receiver unit during a travel time of the emitted optical pulse from the optical device to a target and back to the receiver unit.

A distance measuring device including:

• an optical device, and
• a processing unit configured to determine a distance to a target from said distance measuring device on the basis of a comparison between the transmitted optical pulse and a received optical pulse,
• wherein said optical device includes:
• an optical radiation source configured to emit optical pulses;
• a receiver unit configured to receive reflected optical pulses;
• and
• a control unit configured to adjust as a function of time, for an optical pulse emitted from the optical radiation source, at least one parameter affecting the dynamic range of the receiver unit during a travel time of the emitted optical pulse from the optical device to a target and back to the receiver unit.