A Model Adaptive Illumination Homogenization Method for Face-to-face Exposure 3D Printing

Abstract

The invention provides a surface exposure 3D printing oriented model adaptive illumination uniformization method, and relates to the technical field of intelligent control and image identification. The method includes following steps: data measurement; and data analysis: analyzing illumination power data obtained by measurement of each image sub-block in each position, and obtaining a rule of the illumination power of the image sub-block in the position with the change of grayscale; determining an exposure area of each slice, searching the corresponding power of the corresponding sub-block in the exposure area, setting the minimum power as the optimal power, searching the grayscale corresponding to the optimal power in the sub-block of each exposure area, setting the grayscale of non-exposure areas as the lowest grayscale, and saving all grayscale information in corresponding positions of a grayscale information matrix; and performing image fusion according to the grayscale information matrix and original slice gray scale data. According to the method, the uniformity and precision of exposure can be improved, the portability and the printability are achieved, and certain application values and meaning are achieved.

Description

technical field [0001] The present invention relates to intelligent control and image recognition technology, in particular to the uniformization of the output light energy of the projector, and the adaptive adjustment of the gray scale of the 3D printed slice through the model adaptive illumination uniformization method, so as to realize the face-to-face Research and implementation of model adaptive illumination homogenization method for exposure 3D printing. Background technique [0002] The 3D printer was born in the mid-1980s and was first invented by American scientists. 3D printer refers to a device that uses 3D printing technology to produce real three-dimensional objects. Its basic principle is to use special consumables (glue, resin or powder, etc.) Each layer of powder is bonded and formed to finally print out a 3D entity. [0003] Rapid prototyping technology is widely used in model making in product development stage because of its fast processing speed and low...

AI Technical Summary

Problems solved by technology

However, since the light radiated by the ultraviolet light source is spherical divergent light and the surface exposure 3D printed resin tank is made of glass, it will reflect the ultraviolet light, resulting in uneven brightness distribution of the light-emitting area, which makes the same slice in the printing process There are differences in the curing of the resin in different positions, which seriously affects the accuracy of the part

At the same time, because of this reason, the exposure surface of the surface exposure printing is relatively small, and it is impossible to achieve large-area exposure.

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