Method and device for producing a three-dimensional object

摘要

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.

主权项

1. 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.