Patent ID: 11858204
Assignee: EOS GMBH ELECTRO OPTICAL SYSTEMS
Field: Other special machines (Mechanical engineering)
Classification: CPC B  H  G | IPC B  G  H

Claim 0:
1. A laser printing system for building a three dimensional (3D) object in layerwise fashion through additive manufacturing, comprising:
a plurality of laser modules each having at least two laser arrays, with each laser array having a plurality of semiconductor lasers extending across the array, the laser modules further including at least one optical element imaging laser light emitted by the laser arrays as one pixel in a working plane of the laser printing system,
the laser modules being arranged so as to extend in a first module elongated row and a second module elongated row which is parallel to the first module elongated row so as to span a width of the working plane, such that the arrays of the first and second elongated rows combine to provide illumination along an entire span of the working plane, with a laser at an end of an array of at least one module of the first module elongated row overlapping in its illumination with a laser at an end of an array of at least one module of the second module elongated row, resulting in operation that at least one spot in a pixel in the working plane is capable of being illuminated by the overlapping laser light sources to thereby prevent gaps in the illumination along the entire span.