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AssigneeCoherent, Inc.
InventorsH. Yang Pang, Murray K. Reed, Alexander O.W. Wiessner, R. Russel Austin
Estimating the term…
An original laser-radiation beam having a symmetrical M2 but poor beam quality is sliced in one transverse axis, by a fanned-out stack of parallel transparent plates, into a plurality of beam slices. The beam-slices are also spread by the stack of plates in another transverse axis perpendicular to the first axis. A fanned-out stack of glass blocks aligns the spread beam-slices in the first axis to form what is effectively a single beam having an asymmetric M2, with beam quality improved in one axis and degraded in the other compared with the original beam. The effective single beam is projected into a line of radiation by a cylindrical lens, or by a homogenizing projector including spaced apart cylindrical lens arrays followed by a spherical condenser lens.
Apparatus for projecting a laser-beam characterized as having a transverse X-axis and a transverse Y-axis perpendicular to each other and propagating in a longitudinal Z-axis perpendicular to both of the transverse axes, the apparatus comprising:
An apparatus for receiving a beam of light from a laser having transverse X and Y axes and projecting a line of light on a target along the Y axis, said apparatus comprising:
Dependencies are inferred from the claim text.