Abstract: The invention relates to the field of producing polymer objects and concerns a method and a device for forming a three-dimensional object from a liquid photopolymer. The present method includes exposing elementary cross sections by actinic radiation, moving an object along a construction axis, and forming the object from a fluid zone of a border zone of the photopolymer. To provide fluidity of the border zone, the wave front of the radiation is converted so that the specific power of the radiation on the exposed regions has a gradient along the construction axis. A device for forming a three-dimensional object comprises a source of actinic radiation, a mechanism for moving an object along a construction axis, and a vessel for accommodating a photopolymer, which is provided with an optical interface window being in the form of a converter for converting the wave front of the actinic radiation.