Device and method of exposure control in a device for producing a three-dimensional object

An exposure control device for equipping and/or retrofitting a generative layer-wise building device for a production of at least one three-dimensional object from a building material layer by layer by solidification of the building material by means of a heat supply to positions corresponding to the cross-section of an object in a layer by selectively scanning the layer with electromagnetic radiation or particle radiation, wherein the generative layer-wise building device comprises:

• an exposure device which emits electromagnetic radiation or particle radiation and is configured to irradiate positions to be solidified in a layer in such a way that after cooling they exist as an object cross-section or part of the object cross-section in the respective layer,
• wherein the exposure control device has a first data output interface, at which control commands can be output to the exposure device so that it scans, in accordance with the control commands, positions of a layer of the building material with electromagnetic radiation or particle radiation,
• characterized in that the control commands which are output via the first data output interface specify one of a plurality of exposure types wherein an exposure type is defined by a predetermined combination of a radiation energy density to be emitted by the exposure device and a scanning pattern with which the radiation is being directed to a region of a layer of the building material and
• the exposure control device has a second data output interface at which an exposure type can be output in real time in relation to a timing of the output of a control command specifying this exposure type.