Abstract: A measuring device for aligning a blueprint coordinate system with a build level coordinate system of a working region of a generative manufacturing device arranged in a build level includes a first sensor device configured to cover a first coverage region of the working region with a first measurement accuracy, a selection module configured to select at least one region of interest within the first coverage region, a second sensor device configured to cover the at least one selected region of interest with a second measurement accuracy, the second measurement accuracy being higher than the first measurement accuracy, and an alignment module configured to determine at least one alignment of the blueprint coordinate system relative to the build level coordinate system, including an angle alignment and/or a translation alignment, based on the covered region of interest.

Abstract: A method for operating a manufacturing device for additive manufacturing of a three-dimensional object includes irradiating a subregion of a build material within a building zone in which a beam of a beam source is directed onto the build material by a scanning unit. An amount of energy introduced is chosen such that the build material is solidified, so that a subregion of the three-dimensional object to be manufactured is formed. The method further includes controlling at least one irradiation parameter that characterizes the irradiation such that the irradiation parameter lies in a process window that changes location-dependently over an area of the building zone. The process window presets a relationship between a sensor signal detected by a sensor unit and permissible values for the irradiation parameter.

Abstract: A method for operating a manufacturing device for the additive manufacture of a three-dimensional object, by the layered application and selective solidification of a building material in a building area lying in a working surface, includes directing, by a first scanning unit of the manufacturing device, a detection region of a first sensor unit onto at least one first partial region of a test body region without the first scanning unit directing a beam onto the test body region. The first sensor unit is assigned to the first scanning unit. The method further includes irradiating at least part of the test body region with a beam directed onto the test body region by a second scanning unit of the manufacturing device and evaluating measurement signals detected by the first sensor unit.

Abstract: A method operates a powder bed-based manufacturing device for additive manufacturing of a component from a powder material. The method includes: taking at least one optical recording of a working powder layer of the powder material on a construction location of the manufacturing device; locally evaluating the at least one optical recording; and examining the working powder layer for local coating errors using the evaluation of the at least one optical recording.

Abstract: The disclosure provides methods for calibrating processing machines for the production of 3D components by irradiation of powder layers, wherein the processing machine includes a scanner device for positioning a laser beam in a processing field in which a height-adjustable construction platform for the application of the powder layers by sweeping at least two, e.g., three markings, e.g., in the form of spherical retroreflectors, which are applied on the construction platform and/or on a preform , by the laser beam, detecting laser radiation reflected back from the markings into the scanner device , determining actual positions of the markings , determining deviations of the actual positions of the markings from setpoint positions of the markings, and calibrating the processing machine by correcting the positioning of the laser beam and/or the position of the construction platform using the determined deviations. The disclosure also relates to associated processing machines.

Abstract: The invention relates to methods and to devices for generating multispectral illuminating light having an addressable spectrum, for adaptive multispectral imaging and for capturing structural and/or topographical information of an object or of the distance to an object. The illuminating device comprises a multispectral light source and a modulator for temporal modulation of the individual spectral components of the multispectral light source having modulation frequencies. The multispectral light source comprises at least one light source having a continuous, quasi-continuous, or frequency comb spectrum and wavelength-dispersive means, or an assembly or array of monochromatic or quasi-monochromatic light sources having emission wavelengths or emission wavelength bands which are different from one another in each case.

Abstract: The invention relates to methods and to devices for generating multispectral illuminating light having an addressable spectrum, for adaptive multispectral imaging and for capturing structural and/or topographical information of an object or of the distance to an object. The illuminating device comprises a multispectral light source and a modulator for temporal modulation of the individual spectral components of the multispectral light source having modulation frequencies. The multispectral light source comprises at least one light source having a continuous, quasi-continuous, or frequency comb spectrum and wavelength-dispersive means, or an assembly or array of monochromatic or quasi-monochromatic light sources having emission wavelengths or emission wavelength bands which are different from one another in each case.