Rotary polygon mirror for laser radar

• Main Authors: YU YANWU, YAN XUELIANG
• Format: Patent
• Language: Chinese; English
• Published: 17.01.2023
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The utility model relates to the technical field of laser radars, in particular to a rotary polygon mirror for a laser radar, which comprises a first polygon mirror, the first polygon mirror is composed of an AB surface, a BC surface, a CD surface, a DE surface and an EA surface, the AB surface, the BC surface, the CD surface, the DE surface and the EA surface are different in length and size, and the AB surface, the BC surface, the CD surface, the DE surface and the EA surface are different in length and size. And a rotation center point O is formed in the polygon mirror 1. Through cooperation of the first polygon mirror, the incidence point M and the reflected light MR rotate along with the first polygon mirror, so that scanning is achieved, the scanning ranges of the reflected light formed when the incident light passes through all the faces are different, the scanning range of each face is determined by the central angle corresponding to the face, and the starting angle and the ending angle can also be de