Photocurable 3D (three-dimensional) printing device and imaging system thereof

Abstract

The invention provides an imaging system of a photocurable 3D (three-dimensional) printing device. The imaging system comprises a light source, a liquid crystal panel, a first polarized light filter and a second polarized light filter. A light beam is emergent from the light source. The liquid crystal panel is positioned on a light outlet path of the light source, the liquid crystal panel contains a plurality of pixels, and each pixel comprises a light transmissible region and a light-proof region. The first polarized light filter is arranged on the incident side of the liquid crystal panel. The second polarized light filter is arranged on the emergent side of the liquid crystal panel, and the first polarized light filter and the second polarized light filter are matched with one part of the liquid crystal panel blocking the light beam to form a light beam image, wherein the distance from the liquid crystal panel to the surface of a photosensitive material is close enough, and the size of the liquid crystal panel is basically equal to the size of the image formed by the surface of the photosensitive material to allow the image of the light beam to be directly projected to the surface of the photosensitive material without passing through a projection lens.

Description

technical field [0001] The invention relates to photocurable 3D printing equipment, in particular to an imaging system of photocurable 3D printing equipment. Background technique [0002] 3D printing technology is based on the computer three-dimensional design model, through the software layered discrete and numerical control forming system, using laser beams, hot-melt nozzles, etc. to accumulate metal powder, ceramic powder, plastic, cell tissue and other special materials layer by layer Bonding, and finally overlaying and molding to create a solid product. Unlike the traditional manufacturing industry, which shapes and cuts raw materials through mechanical processing methods such as moulds, turning and milling to finally produce finished products, 3D printing transforms a three-dimensional entity into several two-dimensional planes. The manufacturing complexity is reduced. This digital manufacturing mode does not require complex processes, huge machine tools, or a lot of...

AI Technical Summary

Problems solved by technology

However, in the case of light-curing 3D printing equipment that already requires strong projection brightness, blindly increasing the brightness of light passing through the LCD panel will shorten the life of the LCD.

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