Fig. 2: Laser powder bed fusion using an ADM optic.
From: High-fidelity optical monitoring of laser powder bed fusion via aperture division multiplexing
a Schematic illustration of ADM, showing optical paths for both laser delivery and process monitoring through a common optic. b ADM lens and camera attached to the top of the LPBF testbed, along with the laser boom (collimator, turning mirror, and galvanometers) entering from the right. c Overlay of optical ray trace and mechanical CAD for the ADM lens, showing lenses separated by brass spacers and secured in the lens tube with threaded spacers. d Typical meltpool image collected during printing.
