Laser marking device based on cone off-axis reflection

Abstract

A laser marking device based on cone off-axis reflection is applied in the technical field of industrial measurement, in order to solve the problems of low utilization rate of laser energy and relatively low brightness of obtained word line laser in the prior art. The device comprises the following parts: a light source emitter, which is arranged on one end of a body and embedded into the body; the body, which is a hollow cylinder structure; a laser focusing beam expanding unit, which is arranged in the body coaxially with the light source emitter and is fixedly connected with the other end of the body; and a refractive structure, which is connected with the laser focusing beam expanding unit. The divergent light emitted from the light source emitter passes through the laser focusing beam expanding unit and converges, the convergent beam irradiates on the refractive structure, and the light beam passes through the refractive structure and forms a word line laser on the surface; and the obtained word line laser has the advantages of spot uniformity and good stability. The device is low in installation difficulty, simple in system structure and easy to implement; for engineering application in industrial measurement, the device has a 360 DEG ring light surface phase ratio with coaxial reflection; and the device can ensure the maximum energy utilization of the light source emitter.

Description

technical field [0001] The invention relates to a laser marking device based on conical off-axis reflection, which is applied in the technical field of industrial measurement. Background technique [0002] In the field of construction engineering and machine vision, it is often necessary to project a line or cross laser to the target as a reference line for construction and calibration. [0003] In order to project a line on the target object, a cylindrical lens is usually set in front of the laser module, and the laser beam is refracted by the cylindrical lens to expand the parallel laser beam generated by the laser module into the required fan-shaped light surface. Projected onto the target to form a line of laser light, the light intensity at the edge of the line obtained in this way is very weak, and requires high processing and assembly precision. [0004] Another method is that the motor drives the mirror to rotate to generate a line laser. This method uses the visual...

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Problems solved by technology

[0006] In order to solve the problem of low utilization rate of laser energy in the prior art and relatively low brightness of a word-line laser, the present invention provides a laser marking device based on conical off-axis reflection. The group device obtains a word-line laser, which can realize the control of the line width and ensure the energy stability of the word-line laser

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