Lidar and adjustment method thereof

A LiDAR, comprising at least one transceiver component, wherein the transceiver component comprises an emitting assembly, a beam splitting assembly, and a receiving assembly,

• wherein the emitting assembly emits an outgoing light signal which, after passing through the beam splitting assembly, is emitted into a detection region where it is reflected by a target object to obtain a reflected light signal, and wherein the reflected light signal, after being deflected by the beam splitting assembly, is received by the receiving assembly;
• wherein a beam reducing assembly is disposed between the emitting assembly and the beam splitting assembly and configured to reduce a beam diameter of the outgoing light signal;
• wherein the beam reducing assembly comprises a half-wave plate, a reflector and a polarizing beamsplitter;
• wherein the outgoing light signal comprises a first outgoing light signal and a second outgoing light signal, wherein the first outgoing light signal emits after passing through the polarizing beamsplitter, wherein the second outgoing light signal emits after passing through the half-wave plate, being directed to the polarizing beamsplitter after being reflected by the reflector, being deflected by the polarizing beamsplitter.