Laser scanner

A laser scanner for scanning of an environment, comprising:

• a laser transmitter for transmitting a transmission beam,
• a laser receiver for receiving the transmission beam reflected by the environment as a receive beam,
• a beam-deflection device arranged in a beam path of the transmission and receive beams in the form of a mirror pyramid that is rotatable about a rotational axis and has pyramid sides inclined relative to the rotational axis that each form a mirror facet, and
• a housing, in which the laser transmitter, the laser receiver, and the beam-deflection device are arranged and which comprises a bottom face and a top face, a lateral shell which connects the bottom face and top face and has an inner width that is less than a housing height between the bottom face and top face, and a window for the transmission and receive beams,
• wherein the window is in the bottom face, the beam-deflection device is adjacent to the window and the rotational axis is oriented substantially in parallel with the bottom face, and the laser receiver is arranged closer to the top face than to the bottom face, a deflecting mirror being arranged in the housing so as to be adjacent to the bottom face and deflecting the receive beam from the beam-deflection device onto the laser receiver, wherein the transmission beam impinges on the beam-deflection device in parallel with the rotational axis of the beam-deflection device.