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发明授权
CN105711088B 一种光固化3D打印机 有权 转让

一种光固化3D打印机
摘要：
本发明公开了一种光固化3D打印机，包括承板、驱动机构、容池、用于提供平行光束的光束发生组件以及形成具有切片形状的透光区域的液晶屏；光束发生组件产生的平行光束垂直穿过透光区域，并照射在液态光敏树脂上。本发明的光固化3D打印机利用平行光束穿过液晶屏的透光区域照射在液态光敏树脂上以使其固化，从液晶屏穿过的平行光束并没有发生折射、反射等引起光束变形的光学作用，因此，每层固化的光敏树脂的形状与对应切片的形状相同，打印精度很高。此外，形成平行光束时，点光源到液态光敏树脂的理论最短距离为透镜的一个焦距，或者为导光板的一个厚度，光路很短，因此，本发明的光固化3D打印机可以制造的很小，便于携带和使用。
摘要（英）：

The invention discloses a light-cured 3D printer. The light-cured 3D printer comprises a carrier plate, a driving mechanism, a containing tank, a light beam generation assembly for providing parallel light beams and a liquid crystal screen for forming a light transmittance zone with a slice shape. Parallel light beams produced through the light beam generation assembly perpendicularly go through the light transmittance zone and irradiate liquid photosensitive resin. The parallel light beams produced through the light beam generation assembly go through the light transmittance zone of the liquid crystal screen and irradiate the liquid photosensitive resin so that the resin is cured, and the parallel light beams going through the liquid crystal screen are not refracted and reflected and thus the shape of each layer of the cured photosensitive resin is the same to that of the corresponding slice and a printing precision is high. When the parallel light beams are formed, the theoretical shortest distance from a spot light source to the liquid photosensitive resin is one focal length of a lens or is equal to thickness of a light guide plate and thus the light-cured 3D printer has a small volume and is convenient for carrying and use.

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