Patents Assigned to Envisiontec GmbH
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Patent number: 7831328Abstract: 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.Type: GrantFiled: September 22, 2008Date of Patent: November 9, 2010Assignee: Envisiontec GmbHInventors: Volker Schillen, Hendrik John, Ali Siblani
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Publication number: 20100249979Abstract: Device 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), said device comprising a computer unit, an IC and/or a software implementation respectively with the ability of adjusting and/or controlling the energy input via a specific gray value and/or color value in a voxel matrix.Type: ApplicationFiled: June 14, 2010Publication date: September 30, 2010Applicant: ENVISIONTEC GMBHInventors: Hendrik John, Volker Schillen, Ali El-Siblani
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Patent number: 7790093Abstract: The invention relates to a process or a device for the production of a three-dimensional object by layer-wise solidification of a material which is solidifiable under the application of electromagnetic irradiation by means of mask illumination, wherein the mask is produced using an image forming unit having a prescribed resolution, which is formed from a constant number of image forming elements (pixels) being discrete and being arranged in a spatially mutually fixed manner. For the improvement of the resolution along the outer and inner contours of the sectional areas of the object to be generated layer-wise in the sub-pixel range, a multiple illumination per layer is performed, which consists of a series of multiple images that are mutually shifted in the sub-pixel range in the image/construction plane, wherein a separate mask/bitmap is produced for each shifted image.Type: GrantFiled: May 9, 2005Date of Patent: September 7, 2010Assignee: Envisiontec GmbHInventors: Alexandr Shkolnik, Hendrik John, Ali El-Siblani
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Patent number: 7783371Abstract: Device 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), said device comprising a computer unit, an IC and/or a software implementation respectively with the ability of adjusting and/or controlling the energy input via a specific gray value and/or color value in a voxel matrix.Type: GrantFiled: April 26, 2007Date of Patent: August 24, 2010Assignee: Envisiontec GmbHInventors: Hendrik John, Volker Schillen, Ali El-Siblani
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Patent number: 7636610Abstract: 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.Type: GrantFiled: July 19, 2006Date of Patent: December 22, 2009Assignee: Envisiontec GmbHInventors: Volker Schillen, Hendrik John, Ali Siblani
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Publication number: 20090146344Abstract: The present invention provides a process for producing at least one three-dimensional object, comprising: providing a material to be solidified; delivering electromagnetic radiation and/or synergistic stimulation in a pattern or an image to a building region for solidifying said material; wherein said delivering of electromagnetic radiation and/or synergistic stimulation is performed selectively to a defined area or volume of said material to be solidified; and wherein an energy density of electromagnetic radiation and/or synergistic stimulation is controlled and/or adjusted in a border region of said pattern or image and/or is varied in border regions of patterns or images of different building regions of said material, to have an energy density different from the building region other than said border region(s), wherein the controlling and/or adjustment is dependent on, alone or in combination: (a) intensity of electromagnetic radiation and/or synergistic stimulation delivered to said defined area or volumeType: ApplicationFiled: October 24, 2008Publication date: June 11, 2009Applicant: Envisiontec GmbHInventor: Ali El-Siblani
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Publication number: 20090130449Abstract: The present invention describes a process for producing a three-dimensional object, comprising: providing a material to be solidified, the material comprising a filler and a binder; delivering electromagnetic radiation and/or synergistic stimulation in a pattern or an image to a building region for solidifying said material; wherein said delivering of electromagnetic radiation and/or synergistic stimulation is performed selectively to a defined area or volume of said material to be solidified; and wherein an energy density of electromagnetic radiation and/or synergistic stimulation is varied within said pattern or image and/or between patterns or images of different building regions of said material. The present invention may be directed also to a system where different first and second materials are to be solidified.Type: ApplicationFiled: October 24, 2008Publication date: May 21, 2009Applicant: Envisiontec GmbHInventor: Ali El-Siblani
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Publication number: 20090132081Abstract: 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.Type: ApplicationFiled: September 22, 2008Publication date: May 21, 2009Applicant: Envisiontec GmbHInventors: Volker Schillen, Hendrik John, Ali Siblani
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Publication number: 20090020901Abstract: A process for producing at least one three-dimensional object by solidifying a solidifyable material, comprising the steps of: providing an object carrier capable of carrying the object to be produced; providing a material capable of solidifying when subjected to energy supply; bringing a solidifyable material carrier/provider in a position to carry/provide solidifyable material at least in a building region where solidifyable material is to be solidified; supplying, to the building region, energy capable of solidifying the solidifyable material; and sensing, measuring and/or controlling a condition selected from the group consisting of pressure and/or strain. Alternatively or in combination, contact pressure, fluid pressure and/or material flowability can be sensed and/or adjusted.Type: ApplicationFiled: July 2, 2008Publication date: January 22, 2009Applicant: Envisiontec GmbHInventors: Volker Schillen, Ali El-Siblani
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Patent number: 7438846Abstract: An apparatus and a method for the separation of a material layer (4) hardened on a flat plane (2) serving as a reference by means of a flexible, elastic separating layer (1) arranged between plane and material layer and designed in the form of a film or a gel-like material, are provided.Type: GrantFiled: November 14, 2006Date of Patent: October 21, 2008Assignee: Envisiontec GmbHInventor: Hendrik John
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Patent number: 7195472Abstract: An apparatus and a method for the separation of a material layer (4) hardened on a flat plane (2) serving as a reference by means of a flexible, elastic separating layer (1) arranged between plane and material layer and designed in the form of a film or a gel-like material, are provided.Type: GrantFiled: April 23, 2002Date of Patent: March 27, 2007Assignee: Envisiontec GmbHInventor: Hendrik John
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Publication number: 20070063389Abstract: An apparatus and a method for the separation of a material layer (4) hardened on a flat plane (2) serving as a reference by means of a flexible, elastic separating layer (1) arranged between plane and material layer and designed in the form of a film or a gel-like material, are provided.Type: ApplicationFiled: November 14, 2006Publication date: March 22, 2007Applicant: ENVISIONTEC GMBHInventor: Hendrik John
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Patent number: 7052263Abstract: An apparatus (1) for manufacturing a three-dimensional object (13) includes a trough (7) for holding material (11) which can be solidified under the influence of light. The trough (7) has on its lower side a transparent plate (8). On the transparent plate (8) and side wall (10) of the trough (7) is provided a resilient layer (9) from which solidified material is easier to detach than from the transparent plate (8). An exposure and projection unit (19) serves to expose and solidify the material (11) in the trough (7) from below through the transparent plate (8).Type: GrantFiled: April 18, 2002Date of Patent: May 30, 2006Assignee: Envisiontec GmbHInventor: Hendrik John
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Patent number: 6942830Abstract: A device and a process for producing three-dimensional objects is disclosed. The device has a container (1) for a medium (2) and a three-dimensionally positionable dispenser (4) for release of a material (3), the addition of which to the medium (2) leads to the formation of solid structures, into the medium (2). Addition of the material (3) by moving the dispenser in XYZ direction on a platform (8) below the filling height of the first material (2) in the container (1) leads to the formation of three-dimensional objects.Type: GrantFiled: December 1, 2000Date of Patent: September 13, 2005Assignee: Envisiontec GmbHInventors: Rolf Mülhaupt, Rüdiger Landers, Hendrik John