A photolithographic 3D printer

Abstract

The invention discloses a lithographic 3D printer, which belongs to the technical field of lithography and includes five subsystems: a light source system, an image system, a projection system, a mechanical system, and an electric control system. The system obtains the 3D model data of the printed object, and decomposes it into thin layers with uniform thickness according to the height direction, and then uses the image system to generate the exposure graphics of each thin layer. The photoresist is cured, and the three-dimensional scanning is completed under the step-and-translation movement of the mechanical system clamping the cured photoresist to obtain a high-precision three-dimensional entity. The advantages of the present invention are: the system is different from traditional 3D printing, improves the accuracy and efficiency of precision printing, and has high reliability.

Description

technical field [0001] The present invention relates to photolithography technology and 3D printing technology, in particular to projection photolithography technology and maskless photolithography technology, and in particular to a photolithography type 3D printer. Background technique [0002] Traditional 3D printing generally adopts the "fusion deposition" or "laser sintering" method, that is, on the premise that the existing 3D model data of the object is available, each layer is decomposed to obtain the image of each thin layer, and the high temperature in the nozzle Heating to melt the raw material into a liquid state and then spraying it on the thin layer image, after cooling, a thin layer is obtained, or the tiny particles are flattened, and the thin layer image is scanned with a laser to melt and condense the particles into a thin layer; 3D solid. [0003] 3D printing with traditional methods has the following disadvantages: the control is complicated, the slight i...

AI Technical Summary

Problems solved by technology

[0003] 3D printing with traditional methods has the following disadvantages: the control is complicated, the slight influence during printing will lead to the instability of droplets or particles, and each thin layer image is obtained by two-dimensional scanning, which requires high control accuracy; printing speed Slow, each thin-layer image needs two-dimensional scanning, the speed is slow; the precision is not high, the size of the droplet or particle is large, it is difficult to obtain a high-precision three-dimensional entity, and it is difficult to break through the bottleneck of precision; the energy consumption is large , requires heating or laser, which produces more energy consumption; air pollution, if the "laser sintering" method is used, it is inevitable that tiny particles will be emitted into the air during sintering, forming tiny suspended particles, reducing air quality

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