Transmitter unit and lidar device for scanning a scanning region

A LIDAR scanner for scanning a scanning region defined by a vertical and a horizontal scanning angle using electromagnetic beams, comprising:

• a transmitter, which includes at least two individual semiconductor lasers directly interconnected mechanically and electrically in series, and which is configured to generate and emit the electromagnetic beams in the scanning region such that the electromagnetic beams are distributed or deflected along at least the vertical scanning angle;
• a receiver to receive beams reflected by at least one object located in the scanning region;
• and
• a processor to evaluate the received reflected beams;
• wherein the at least two semiconductor lasers are surface emitters or edge emitters stacked or positioned adjacent to each other,
• wherein a first lens is a Powell lens for shaping the beams in a vertical direction, and wherein a second lens, which is downstream from the Powell lens, collimates the beams in a horizontal direction,
• wherein a vertical divergence angle is greater than a horizontal divergence angle, and
• wherein the first lens includes an aspherical lens or a diffractive optic lens, which has a biconvex contour in the vertical direction, and which is situated at a distance from emission surfaces of the lasers, for homogenizing a non-uniform, vertical intensity distribution of the beams generated by the lasers, and in which the first lens includes a biconcave contour in the horizontal direction, for providing an additional horizontal widening, for obtaining a more compact configuration, and wherein the second lens provides for the horizontal collimation at a specific distance from the emission surfaces of the lasers.