Laser-ranging device and mobile apparatus

A mobile apparatus comprising:

• a focus adjustable imaging system configured to determine direction information of a target object relative to the imaging system according to a position of the target object in an image captured by the imaging system;
• and
• a laser-ranging device configured to adjust a detection direction of the laser-ranging device according to the direction information and detect a distance between the target object and the laser-ranging device, the laser-ranging device including:
• an emitter configured to emit a laser pulse sequence;
• an optical assembly including:
• a collimating lens located on an emitting light path of the emitter and configured to collimate the laser pulse sequence emitted by the emitter and emit the laser pulse sequence out of the laser-ranging device;
• and
• a converging lens configured to converge at least a part of return light reflected by the target object;
• a detecter configured to receive light converged by the converging lens and convert the light into an electrical signal and determine the distance between the target object and the laser-ranging device according to the electrical signal;
• and
• a drive system configured to drive the optical assembly to move in a plane perpendicular to an optical axis of the laser pulse sequence and/or along an optical axis direction;
• wherein the imaging system is further configured to perform focus adjustment according to the distance obtained by the laser-ranging device.