Scanning laser radar device

The invention provides a scanning laser radar device, and relates to the field of radar scanning detection and the field of LCD. The following technical solution is adopted: (a) the scanning laser radar device comprises a control module, a ring-shaped LCD screen, a laser ranging module and an output module, (b) the control module has the ability to control the ring-shaped LCD screen, the ability to control the laser ranging module and the ability to control the output module, (c) the ring-shaped LCD screen does not contain backlight and has selective light transmission, by controlling the arrangement of liquid crystal molecules, the laser light emitted by a laser emitting module is controlled to pass a certain pixel point, the pixel point is known, so that the emitting angle of the laser is obtained, and then the ranging result of the angle is obtained. The device can complete the measurement of a two-dimensional or three-dimensional environment can be used in the field of automatic driving, and the device ha