Abstract: The present disclosure relates to a computer-implemented method, devices and systems for determining a location associated with a gemstone. That method includes training a data model to detect a characteristic associated with a feature of interest pertaining to a gemstones surface. The training including the steps of providing a plurality of training images of gemstones, each training image associated with a label for a feature of interest pertaining to a given region of a gemstone type and an output indicating the specific gemstone type for the label.

Abstract: A method for forming a conductive track on a surface (21) of a substrate (11) that includes providing the substrate (11), wherein the substrate (11) comprises deposited material (23) along a path on a surface (21) of the substrate (11). Generating a laser beam having an optical axis and an energy distribution within a cross-sectional area of the laser beam incident on the surface (21). The energy distribution of the laser beam is non-circularly symmetric about the optical axis at the surface (21). The method further includes directing the laser beam to move along the path to irradiate the deposited material (23) to provide a conductive track along the path. A selected orientation of the energy distribution within the cross-sectional area is aligned with the direction of movement of the laser beam.

Abstract: The present invention provides a method for forming a conductive track on a surface (21) of a substrate (11). The method comprises providing a substrate (11), wherein the substrate (11) comprises deposited material (23) along a path on a surface (21) of the substrate (11). Generating a laser beam having an optical axis and an energy distribution within a cross-sectional area of the laser beam incident on the surface (21). The energy distribution of the laser beam is non-circularly symmetric about the optical axis at the surface (21). The method further comprises directing the laser beam to move along said path to irradiate the deposited material (23) to provide a conductive track along said path. A selected orientation of the energy distribution within the cross-sectional area is aligned with the direction of movement of the laser beam.

Abstract: An apparatus for and a method of forming a plurality of groups of laser beams (2, 2?, 2?) are defined. Each group (2, 2?, 2?) may comprise two or more laser beams. The apparatus comprises a first diffractive optical element (3, referred as DOE) and a second diffractive optical element (8), the first DOE (3) being arranged to receive a first laser beam (1) and to divide this into a plurality of second laser sub-beams and the second DOE (8) being arranged to receive said plurality of second laser sub-beams and to divide each of these into two or more groups of third laser sub-beams (2, 2?, 2?), the separation of the groups in a direction perpendicular to a first axis being adjustable by rotation of the first DOE (3) about its optical axis and the separation of the third laser sub-beams (2, 2?, 2?) within each group in a direction perpendicular to the first axis being adjustable by rotation of the second DOE (8) about its optical axis.

Abstract: An apparatus for and a method of forming a plurality of groups of laser beams (2, 2?, 2?) are defined. Each group (2, 2?, 2?) may comprise two or more laser beams. The apparatus comprises a first diffractive optical element (3, referred as DOE) and a second diffractive optical element (8), the first DOE (3) being arranged to receive a first laser beam (1) and to divide this into a plurality of second laser sub-beams and the second DOE (8) being arranged to receive said plurality of second laser sub-beams and to divide each of these into two or more groups of third laser sub-beams (2, 2?, 2?), the separation of the groups in a direction perpendicular to a first axis being adjustable by rotation of the first DOE (3) about its optical axis and the separation of the third laser sub-beams (2, 2?, 2?) within each group in a direction perpendicular to the first axis being adjustable by rotation of the second DOE (8) about its optical axis.