2 results about "Image field" patented technology

The invention discloses an adaptive compensation device for horizontal imaging field pitch angle of laser radar. The adaptive compensation device comprises: a metal frame; a turntable fixed to the metal frame; a spindle having one end fixed to the turntable through a fixing point and configured to be capable of rotating around the fixing point, wherein the upper portion of the other end of the spindle is configured to hold a laser, and the spindle is used for rotating to adjust imaging field pitch angle of the laser; a thermal expansion rod having the upper end fixed to the metal frame and thelower end abutted to the spindle, wherein a thermal expansion coefficient of the thermal expansion rod is greater than that of the metal frame; a spring having two ends fixed between the lower portion of the other end of the spindle and the metal frame. The metal frame and the thermal expansion rod have a great thermal expansion coefficient difference; upon a temperature change, deformation of the thermal expansion rod may push the spindle so as to drive a laser beam emitted by the laser on the spindle to rotate opposite to a displacement of the pitch angle, and thermo-optic drift due to temperature gradient is adaptively compensated.