Beam expanding and real-time focusing device based on CO2 laser tube light source

Abstract

The invention discloses a beam expanding and real-time focusing device based on a CO2 laser tube light source. Two 45-degree plane mirrors are utilized to turn an optical axis direction of a CO2 laserbeam by 180 degrees, thereby shortening a laser emission cylinder, realizing miniaturization and portability of the laser emission cylinder, and facilitating field transportation and work; and real-time focusing can be performed according to the distance of a target, thereby achieving the effects that for targets of different distances, under the condition of constant laser tube power, CO2 laserspots are the smallest, laser power density is the highest, and a capability of clearing foreign matter is the highest.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a CO-based 2 Beam expansion and real-time focusing device of laser tube light source. Background technique [0002] The power lines of the transmission network are usually exposed and have no insulation layer, and foreign objects such as kites, cloth strips, and plastic sheets hanging on them should be disposed of in time. Otherwise, if it is contaminated with rain, snow, dew or affected by other conditions, it will easily cause phase-to-phase short circuit, and there will be safety hazards such as fire. In addition, it may cause tripping, endangering the power supply in large areas of urban areas and causing great economic losses. The general methods for cleaning foreign matter on the power line include: manually climbing up the pole tower for cleaning, lifting the insulated arm truck to pick it up, and unmanned aerial vehicle spraying fire to clean it up, etc. Climbing up the ...

AI Technical Summary

Problems solved by technology

Collimated beam emission method, CO 2 The CO output from the laser tube 2 The laser divergence angle is large, the spot on the target is large, and the laser power density is low. It is difficult to directly remove foreign objects on long-distance wires, and the utilization rate of laser power is low.

However, in the focused transmission mode with a fixed focal length, the beam expander optical system adopts the same focal length, which cannot achieve CO 2 The laser focuses on targets at different distances, making it difficult to remove foreign objects at different distances

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