Method and device for producing a three-dimensional object, and computer and data carrier useful thereof

A technology of three-dimensional objects and two-dimensional data, which is applied in computing, opto-mechanical equipment, image data processing, etc.

Active Publication Date: 2008-01-23
ENVISIONTEC GMBH DE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the conversion of 3D model data slices and layered 2D data corresponding to the corresponding cross-sections using the above prior art is complex and requires comprehensive algorithms and computer processing

Method used

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  • Method and device for producing a three-dimensional object, and computer and data carrier useful thereof
  • Method and device for producing a three-dimensional object, and computer and data carrier useful thereof
  • Method and device for producing a three-dimensional object, and computer and data carrier useful thereof

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Embodiment approach

[0104] According to a preferred embodiment, color coding will be performed with appropriate grayscale and / or color values ​​according to the overlapping size (ie the size of the intersecting surfaces / volumes), as shown in FIG. 7B . Specifically, as shown on the left side of Figure 7B, if no intersecting faces / volumes overlap, the color code will be set to "black"; for around 40% intersecting faces / volumes, it should be set to an approximately intermediate level Grayscale value; while for cases where the intersecting faces / volumes reach 100% in the corresponding rasterized voxel, the color code will be set to "white". The color codes for overlapping intersecting faces / volumes between the voxel matrix and the 3D model are generated for the entire construct rasterized by a voxel grid raster, as shown in the middle image of Figure 7B, before further conversion to bitmap data The bitmap data set of the corresponding XY voxel plane of , as shown in the right diagram of Fig. 7B. For...

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Abstract

The invention relates to a method for producing a three-dimensional object by solidification of a material solidifiable under the action of electromagnetic radiation by means of energy input via an imaging unit comprising a predetermined number of discrete imaging elements (pixels). The method comprises performing solidification with exposure using bitmap mask. The bitmap mask may be formed from a stack of bitmap data provided by an overlap analysis of a three-dimensional volume completely or partially enclosing a three-dimensional model of at least a part of the three-dimensional object to be produced. Alternatively, bitmap mask may be formed from a two-dimensional data set comprising overlap information. Solidification may be performing with exposure using bitmap mask generated "on the fly". The invention is also directed to devices, and a computer and a data carrier useful for performing or executing the method.

Description

technical field [0001] The present invention relates to a method and device for generating a three-dimensional object. The method adopts a material that can be cured under the action of electromagnetic radiation, and the material is solidified by energy input through an imaging unit containing a predetermined number of discrete imaging elements (pixels). Finish the look. In particular, the invention relates to apparatus and methods for generating three-dimensional objects by exposure to a raster (bitmap) mask. Typically, the minimum physical resolution within the mask is determined by the pixel size. Spatial light modulator (SLM) technology is a specific technology that can be used for the imaging unit of the device. Background technique [0002] In the field of conventional stereolithography and rapid prototyping devices, the method of generating three-dimensional objects is to use materials that can be cured under the action of electromagnetic radiation, usually layered ...

Claims

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Application Information

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IPC IPC(8): G03F7/00B29C67/00
CPCG06T19/00B29C67/007G06T17/10B29C64/129
Inventor 沃尔克·席勒亨德里克·约翰
Owner ENVISIONTEC GMBH DE
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