Line light spot laser far-field focusing transmitting antenna

Abstract

The invention discloses a line light spot laser far-field focusing transmitting antenna, which comprises a column lens battery and a main beam expansion system. The column lens battery and the main beam expansion system are sequentially arranged in the optical axis direction, wherein the column lens battery is arranged close to a laser; and the column lens battery comprises a plano-concave columnlens and a plano-convex column lens, and the main beam expansion system comprises a front battery secondary mirror, a rear battery secondary mirror, a first main mirror and a second main mirror; the combined focal length of the front battery secondary mirror and the rear battery secondary mirror is negative, and the combined focal length of the first main mirror and the second main mirror is positive. The column lens battery, a secondary mirror battery and a main mirror battery are sequentially arranged to focus a laser remotely to a line light spot with the needed size, the laser convergencepower density of the focused light spot is high, and thus the laser utilization efficiency is improved; and meanwhile, the line light spot can follow the high-voltage cable direction, thus the actingrange of a laser beam on a high-voltage cable is enlarged, and the de-icing efficiency of power equipment is improved.

Description

technical field [0001] The invention relates to the technical field of laser long-distance focusing equipment, in particular to a line-spot laser far-field focusing transmitting antenna. Background technique [0002] At present, in order to reduce the impact of icing disasters on power equipment, since the 1970s, my country has carried out a lot of research work on wire deicing technology and equipment. [0003] The laser has the characteristics of high energy transmission efficiency and directional emission. The high-power laser is projected onto the surface of high-altitude icy power equipment through the transmitting antenna. The energy of the laser is absorbed by the ice layer and the surface of the power equipment respectively, and the ice layer will be divided into small Blocks, the ice layer in contact with the surface of the electrical equipment is melted, and the ice coating falls off due to gravity. A variety of high-power laser deicing equipment has been develope...

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