Pseudo-coaxial ccd shooting system and laser processing device using the system

Abstract

The invention belongs to the technical field of laser auxiliary equipment, and provides a pseudo-coaxial CCD shooting system, which includes: a base plate, a reflective lens holder moving on the base plate, a reflective lens fixed on the reflective lens holder, and a The CCD camera on the top, the first CCD light source used to provide the illumination beam for CCD shooting, the extension direction of the reflective lens is at an angle of 45° with the optical path direction of the CCD camera, and a through hole is provided on the base; when the reflective lens is located at the position of the through hole , the illuminating beam passes through the through hole after being reflected by the reflector; when the reflector moves away from the position of the through hole, the processing beam passes through the through hole vertically. By adopting the pseudo-coaxial CCD shooting system of the present invention, laser processing and CCD shooting can be realized at the same station without moving the workpiece, and the precision and efficiency of laser processing can be improved.

Description

technical field [0001] The invention belongs to the technical field of laser auxiliary equipment, in particular to a pseudo-coaxial CCD shooting system. Background technique [0002] In the field of high-precision laser cutting and laser marking, when using CCD (Charge-Coupled Device, charge-coupled device) to take pictures and position, the linear motion module usually drives the object to be marked to move under the CCD camera. , and then the linear module drives the object to be marked to the bottom of the marking machine for marking. When the linear module drives the object to be marked to move, the linear platform itself has precision errors, thereby reducing the marking accuracy. In addition, the platform The movement of the machine will take up time and reduce the efficiency of marking. [0003] Alternatively, a coaxial CCD imaging system is used to image the workpiece by using the reflected light of the processing laser or a separate ccd illumination source. Howeve...

AI Technical Summary

Problems solved by technology

[0004] Reflected light or a separate ccd lighting source needs to be installed in the optical path to achieve the transmission of a specific lens. The lens needs to ensure the total reflection of the processing laser and the transmission of the lighting source required by the ccd, which requires coating on the lens To adapt to the reflection or transmission of light of different wavelengths, the cost is very high due to the use of multiple coatings; if the coating quality is poor, the total reflection of the laser cannot be guaranteed, and the energy of the processing laser will be lost; on the other hand, in ensuring At the same time, the laser energy and cost will limit the types of ccd illumination sources; moreover, the illumination light needs to pass through the lens of the specific lens and then return to the CCD, which may cause ghosting and affect the image quality

Images