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US 9,186,847 B2Granted
Method and device for producing a three-dimensional object
AssigneeSintermask GmbH
InventorsCarl Fruth, David Hermann
Life of this patent
Estimating the term…
Abstract
A method for producing a three-dimensional object by selective solidification of a build material includes irradiating a surface of a mask with at least one radiation source. The mask is disposed at a distance from a build plane and an optical imaging system is used to produce a reproduction of the mask on the build plane.
Claims18
A method for manufacturing a three-dimensional object by selective solidification of a build material, the method comprising the following steps:
- placing a mask on a reflective mask carrier and positioning the mask at a distance from a build plane in a build chamber;
- providing multiple radiation sources each being configured to areally irradiate the mask and to be used simultaneously or alternatively to one another;
- transilluminating the mask twice with radiation delivered by at least one of the multiple radiation sources;
- and
- generating an image of the mask on the build plane using an imaging optical system.
2 more elements
An apparatus for manufacturing a three-dimensional object by selective solidification of a build material, the apparatus comprising:
- a build chamber for receiving a build plane;
- a mask system encompassing a reflective mask carrier and a mask disposed on said reflective mask carrier and positioned at a distance from said build plane;
- multiple radiation sources each being configured to areally irradiate said mask and to be used simultaneously or alternatively to one another, at least one of said multiple radiation sources delivering radiation transilluminating said mask twice;
- and
- an imaging optical system generating an image of said mask on said build plane.
2 more elements
Dependencies are inferred from the claim text.