Controllable laser processing device based on wavefront modulation

Abstract

The invention relates to a controllable laser processing device based on wavefront modulation. The controllable laser processing device based on wavefront modulation comprises a laser processing head, an irradiation module and a photoelectric detection analysis module. The irradiation module and the photoelectric detection analysis module are located in different positions of the laser emitting mechanical edge of the laser processing head. Emitting beams of the irradiation module cover the laser processing working area and peripheral areas of the laser processing head, and light fields inside the emitting beam coverage area of the irradiation module are incident on the photoelectric detection analysis module. A light filed wavefront modulation element is arranged on a laser processing light path, so that shaping is achieved by focusing light spots, the laser processing performance is improved, and an optical material analysis technology and a photoelectric position detection technology are combined. Emitting light of the irradiation module irradiates the laser processing area and the peripheral areas of the laser processing head, material composition information and movement position information inside the irradiated areas are detected by the photoelectric detection analysis module, the phenomenon that a non-processing object enters the laser processing area is avoided, and laser of the laser processing device is safe and controllable.

Description

technical field [0001] The invention relates to a laser focusing device, especially a controllable laser focusing device based on wavefront modulation, which is mainly used for laser cutting, laser marking, laser drilling, laser welding, laser heat treatment, laser forming, and laser 3D printing , laser lithography, optical information storage, optical micro-manipulation, photoelectric detection and other fields of controllable laser processing. Background technique [0002] Laser processing devices are widely used in laser lithography, optical information storage, optical micro-manipulation, photoelectric detection, laser processing and other fields. For example, in the laser processing system, the thermal processing or cold processing of materials using focused laser beams can be divided into laser welding, laser cutting, laser marking, laser drilling, laser heat treatment, laser forming, and laser 3D printing according to specific processing actions. etc., have been wide...

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Problems solved by technology

[0003] In the prior art, there are laser processing devices, see Italian PRIMA company laser cutting machine, Shenzhen Han's company laser welding machine and laser cutting machine, Wuhan Jinyun company's laser engraving and punching machine, Wuhan Chutian company, Wuhan unity, Huagong technology The laser processing devices of such companies are well used in many fields and play an important role in promoting the field of laser processing. , or use the focus area for processing after focusing, without playing the role of wavefront modulation on the focus spot, without using wavefront polarization and phase regulation technology, to give full play to the potential of the processing characteristics of the laser processing device; 2) The laser processing device is in the The measures adopted in terms of safety protection are to regulate the behavior of personnel in the process of using the device and all links in the process of use. If the user does not follow the norms or has misoperation during use, there is still the possibility of being threatened by safety; 3) In terms of laser safety control, the method used in the laser processing device itself is to prompt warning signs. Setting safety warning signs on the equipment also requires personnel to be aware of the signs and have a certain knowledge background. Human-computer interaction in the process is required. There are requirements for the device to be close to personnel, and there are safety control loopholes; 4) Lack of laser safety control measures for the laser processing device itself, the safety assurance level is low, and the laser processing device does not have the function of safe identification and analysis, low intelligence, poor flexibility, Laser safety controls are slow to respond

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