Laser

Abstract

The invention provides a laser. A laser source, a collimator, an isolator and an optical lens assembly are sequentially arranged along the output main light path. Laser output by the laser source sequentially penetrates through the collimator, the isolator and the optical lens assembly. The laser further comprises a double-color sheet, an indication light source and an indication light lens. The double-color sheet is arranged on the output main light path and is positioned between the isolator and the optical lens assembly; laser is transmitted and input into the optical lens assembly from thedouble-color sheet, the indication light source, the indication light lens and the double-color piece are sequentially arranged along an indication light path, indication light output by the indication light source passes through the indication light lens and then is input into the double-color piece, and the indication light is reflected and input into the optical lens assembly from the double-color piece. According to the scheme, the laser and the indication light can be coaxially combined in the output main light path to be transmitted, in addition, the color difference between the laser and the indication light is compensated by adjusting the indication light lens, then coaxial and confocal output of the indication light and the laser is achieved, and therefore the operation precisionand the operation quality of cutting or welding and the like are effectively improved.

Description

technical field [0001] The invention relates to the field of optical devices, in particular to a laser. Background technique [0002] In the fiber laser marking, cutting and welding systems, since the 1064nm laser is invisible light, the visible light 650nm red light is often used as the indicating light path, so as to realize the positioning operation. The indicator light of fiber laser marking is usually coupled into the optical fiber through the WDM of the laser system, and the signal laser and indicator light are output from the beam expander of the isolator, and then focused by the galvanometer and the field lens. [0003] refer to figure 1 , figure 1 It is a schematic diagram of the optical path of an existing laser. The laser is provided with a collimator 11, an isolator 12 and an optical lens assembly 13 along the optical path. Through the collimator 11, the parallel light λ1 can output laser light of 1064nm and λ2 red light of 650nm. Position the working position...

AI Technical Summary

Problems solved by technology

[0004] refer to figure 2 , due to the problem of dispersion in the crystal material of the isolator 12, there is generally a misalignment problem between the 650nm indicating red light output from the isolator and the 1064nm laser, so that the working position of the laser and the marking position of the red light do not overlap, which affects the operation Precision, and because the refractive index of light of different wavelengths is different when passing through optical devices of different materials, there is a problem of different focus after passing through the isolator and optical lens assembly, which in turn causes the laser to fail to focus on the working position of the target , affecting the work efficiency and work quality

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