An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. Improved structure formation, part creation and manipulation, use of multiple additive manufacturing systems, and high throughput manufacturing methods suitable for automated or semi-automated factories are also disclosed.

An additive manufacturing system including a two-dimensional energy patterning system for imaging a powder bed is disclosed. Improved structure formation, part creation and manipulation, use of multiple additive manufacturing systems, and high throughput manufacturing methods suitable for automated or semi-automated factories are also disclosed.

A device for the optical measurement of a distance from a reflecting or scattering target object is disclosed. The device has a distance measurement device and an adjusting device arranged outside of the distance measurement device having a second transmission optical unit adjustable between a first and second position for forming the laser light into a beam, where in the first position, the second transmission optical unit is arranged in the laser beam, and in the second position, it is arranged outside of the laser beam.

A device for the optical measurement of a distance from a reflecting or scattering target object is disclosed. The device has a distance measurement device and an adjusting device arranged outside of the distance measurement device having a second transmission optical unit adjustable between a first and second position for forming the laser light into a beam, where in the first position, the second transmission optical unit is arranged in the laser beam, and in the second position, it is arranged outside of the laser beam.

A light adjusting apparatus including a drive section provided with an axial magnet, a coil core member and a coil, a first substrate provided an opening and a first cut-out portion, a second substrate provided with an opening and a second cut-out portion, located at a predetermined distance from the first substrate, an incident light adjusting section to which the axial magnet is joined, and an axial magnet support member provided with a distance keeping portion that keeps a distance between the coil core member and the axial magnet to within a certain range and a dropout prevention portion that prevents dropout of the axial magnet from the first cut-out portion, the axial magnet support member being fixed to the coil core member, in which the incident light adjusting section is rotated by the drive section for adjusting the incident light.

A light adjusting apparatus including a drive section provided with an axial magnet, a coil core member and a coil, a first substrate provided an opening and a first cut-out portion, a second substrate provided with an opening and a second cut-out portion, located at a predetermined distance from the first substrate, an incident light adjusting section to which the axial magnet is joined, and an axial magnet support member provided with a distance keeping portion that keeps a distance between the coil core member and the axial magnet to within a certain range and a dropout prevention portion that prevents dropout of the axial magnet from the first cut-out portion, the axial magnet support member being fixed to the coil core member, in which the incident light adjusting section is rotated by the drive section for adjusting the incident light.

The imaging unit of the present disclosure is an imaging unit rotatable about a first axis. The imaging unit includes a lens holder and an operating member. The lens holder holds a lens on its surface, has a first gear on its rear face, and is rotatable about a second axis in forward and backward directions. The operating member has a second gear engaged with the first gear, is rotatable about a third axis in forward and backward directions, and faces the rear face of the lens holder. A plane with the first axis as a normal, a plane with the second axis as a normal, and a plane with the third axis as a normal are orthogonal to each other. The lens holder rotates by rotating the operating member.

The imaging unit of the present disclosure is an imaging unit rotatable about a first axis. The imaging unit includes a lens holder and an operating member. The lens holder holds a lens on its surface, has a first gear on its rear face, and is rotatable about a second axis in forward and backward directions. The operating member has a second gear engaged with the first gear, is rotatable about a third axis in forward and backward directions, and faces the rear face of the lens holder. A plane with the first axis as a normal, a plane with the second axis as a normal, and a plane with the third axis as a normal are orthogonal to each other. The lens holder rotates by rotating the operating member.

The invention relates to a method for determining at least one beam propagation parameter (M.sup.2, w.sub.0, θ, z.sub.0) of a laser beam, comprising: directing the laser beam through a lens arrangement towards a spatially resolving detector, imaging the laser beam at a plurality of different focus positions (F1, . . . ) relative to the spatially resolving detector by adjusting a focal length (f.sub.1, . . . ) of the lens arrangement, and determining the at least one beam propagation parameter (M.sup.2, w.sub.0, θ, z.sub.0) by evaluating an intensity distribution (l(x,y)) of the laser beam on the spatially resolving detector at the plurality of different focus positions (F1, . . . ). The method comprises adjusting the focal length (f.sub.1, . . . ) of the lens arrangement by arranging lens elements (A1, . . . ; B1, . . . ) having different focal lengths (f.sub.A1, . . . ; f.sub.B1, . . . ) in a beam path of the laser beam.

The invention relates to a method for determining at least one beam propagation parameter (M.sup.2, w.sub.0, θ, z.sub.0) of a laser beam, comprising: directing the laser beam through a lens arrangement towards a spatially resolving detector, imaging the laser beam at a plurality of different focus positions (F1, . . . ) relative to the spatially resolving detector by adjusting a focal length (f.sub.1, . . . ) of the lens arrangement, and determining the at least one beam propagation parameter (M.sup.2, w.sub.0, θ, z.sub.0) by evaluating an intensity distribution (l(x,y)) of the laser beam on the spatially resolving detector at the plurality of different focus positions (F1, . . . ). The method comprises adjusting the focal length (f.sub.1, . . . ) of the lens arrangement by arranging lens elements (A1, . . . ; B1, . . . ) having different focal lengths (f.sub.A1, . . . ; f.sub.B1, . . . ) in a beam path of the laser beam.