A dual-wavelength special-shaped scribing light path shaping device

Abstract

The utility model relates to laser cutting technical field, concretely relates to a kind of light path shaping device of double-wavelength special-shaped scribing, including basic light path component, for the propagation direction and shaping of double-wavelength laser, sequentially including laser source, the first reflector of the laser propagation direction change, 1 / 2 water crystal wavelength board of control laser polarization state and wavelength characteristics, realize the polarizing cube beamsplitter of specific polarization state laser light splitting, the second reflector of the laser propagation direction change again, the beam expander of adjusting laser beam diameter, the focusing shaping of laser with conic lens etc..The technical scheme is propagated by basic light path component to double-wavelength laser and is shaped, cooperate with green light and infrared light emission of double-wavelength laser, can be adapted to different thickness material cutting demand by light path switching;Utilize conic lens and plano-convex mirror to form Bessel beam shaping structure, can produce high focal depth, low divergence angle cutting beam, satisfy special-shaped scribing precision requirement.

Claims

1. An optical path shaping device for a dual-wavelength irregularly shaped scriber, characterized in that, include: The basic optical path components, used for propagation guidance and shaping of dual-wavelength lasers, include, in sequence, a laser source, a first reflector to change the laser propagation direction, a 1 / 2 crystal wavelength plate to regulate the laser polarization state and wavelength characteristics, a polarizing cube beam splitter to achieve laser beam splitting in a specific polarization state, a second reflector to change the laser propagation direction again, a beam expander to adjust the laser beam diameter, a conical lens to focus and shape the laser, a plano-convex mirror to optimize the beam shape in conjunction with the conical lens, and a third reflector to guide the shaped laser to the processing area. An optical shutter assembly includes a first optical shutter and a second optical shutter for controlling the on / off state of a laser, wherein the first optical shutter and the second optical shutter are connected in series in an optical path; An optical path cleaning module is used to clean the surface of optical components, including an air nozzle that is aligned with the optical components in the optical path. An electric adjustment bracket is used to mount the 1 / 2 crystal wavelength plate or conical lens, and the angle or position of the optical element is adjusted by a motor drive.

2. The optical path shaping device according to claim 1, characterized in that, The first optical shutter is located at the incident end near the laser source, and the second optical shutter is located at the incident end of the optical path near the third reflector.

3. The optical path shaping device according to claim 1, characterized in that, The optical path cleaning module also includes a miniature air pump and an air tube. The miniature air pump is connected to the air nozzle through the air tube and is used to deliver clean compressed air to the air nozzle.

4. The optical path shaping device according to claim 3, characterized in that, The air nozzle is positioned at least aligned with the surfaces of the first reflector, the polarizing cube beam splitter, the second reflector, and the third reflector, and the position of the air nozzle is adjustable; the surface of the miniature air pump is rotatably connected to a bracket via a torsion shaft, and the air nozzle is detachably connected to the bracket.

5. The optical path shaping device according to claim 1, characterized in that, The motor of the electric adjustment bracket is a stepper motor, used to precisely adjust the angle or position of the optical elements.

6. The optical path shaping device according to claim 1, characterized in that, The beam expander is a dual-wavelength variable magnification beam expander, which can adjust the beam diameter to adapt to the cutting needs of different materials.

7. The optical path shaping device according to claim 1, characterized in that, The conical lens and the plano-convex lens work together to form a Bessel beam shaping structure, which is used to generate a cutting beam with high depth of focus and low divergence angle.

8. The optical path shaping device according to claim 1, characterized in that, The laser source is a dual-wavelength laser that can emit green light and infrared light, and can be adapted to cut materials of different thicknesses by switching optical paths.

9. The optical path shaping device according to claim 1, characterized in that, It also includes a cutting positioning auxiliary camera, which is mounted on the device to photograph the workpiece to help determine the cutting position and path.

10. The optical path shaping device according to claim 9, characterized in that, The cutting positioning auxiliary camera is an industrial camera with a microscope lens and a magnification of not less than 100 times.

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