Device for the additive manufacture of three-dimensional objects by successive layer-by-layer selective exposure and the associated successive layer-by-layer selective solidification of layers of building material from a building material which can be solidified by means of a laser beam , comprising a process chamber , in which the successive layer-by-layer selective exposure and the successive layer-by-layer selective solidification of respective building material layers of a building material solidifiable by means of a laser beam takes place, and an exposure device , which is used for generating a laser beam for selective exposure and consequent solidification of respective layers of building material, wherein the exposure device is arranged or formed on a housing structure spaced from the process chamber in a heat-decoupled manner, characterized in that a gap space defining a distance between the exposure device and the process chamber is formed between the exposure device and the process chamber , further comprising at least one gap extending between the exposure device , in particular a laser beam decoupling point of the exposure device , via which a laser beam from the exposure device , in particular a beam deflector associated with the exposure device , and a laser beam coupling point via which a laser beam couples into a process chamber interior defined by the process chamber , and a shielding element , which is arranged or formed in the process chamber and is in particular bellows-like or sleeve-like, shielding element for shielding the laser beam extending between the exposure device , in particular the laser beam exit point of the exposure device , and the process chamber , in particular the laser beam coupling point of the process chamber . a process chamber , in which the successive layer-by-layer selective exposure and the successive layer-by-layer selective solidification of respective building material layers of a building material solidifiable by means of a laser beam takes place, and an exposure device , which is used for generating a laser beam for selective exposure and consequent solidification of respective layers of building material, wherein the exposure device is arranged or formed on a housing structure spaced from the process chamber in a heat-decoupled manner, characterized in that a gap space defining a distance between the exposure device and the process chamber is formed between the exposure device and the process chamber , further comprising at least one gap extending between the exposure device , in particular a laser beam decoupling point of the exposure device , via which a laser beam from the exposure device , in particular a beam deflector associated with the exposure device , and a laser beam coupling point via which a laser beam couples into a process chamber interior defined by the process chamber , and a shielding element , which is arranged or formed in the process chamber and is in particular bellows-like or sleeve-like, shielding element for shielding the laser beam extending between the exposure device , in particular the laser beam exit point of the exposure device , and the process chamber , in particular the laser beam coupling point of the process chamber . <EOS>