In the CLIP 3D printing process based on mask projection,when multiple projection devices are tiled to expand the molding area,the optical joints caused by the superposition of the pixel brightness in the overlapping area will lead to the distor-tion of the model entity there,affecting the molding quality.To address this issue,an edge energy homogenization scheme was proposed.By designing a set of symmetrical grayscale virtual masks in a nonlinear attenuation manner,it was fused with the seg-mentation mask images of adjacent devices to correct the ultraviolet light intensity in the overlapping area,so that the even and uniform UV exposure energy was obtained across the entire printing plane.The actual printing results show that the proposed scheme can effectively alleviate the problems of uneven solidification thickness of sliced thin layer and easy breakage at the splicing point in the photo-curing molding of the model entity,and the overall quality of the model entity is significantly improved.
维普
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