375nm Laser with output power 10W is for LDI (Laser Direct Imaging) .
An LDI (Laser Direct Imaging) exposure machine is a high-precision, non-contact system used in PCB and screen printing to directly project circuit or image patterns onto photoresist-coated substrates, eliminating the need for traditional photomasks. It uses UV lasers, usually at 405nm, and DMD (Digital Micromirror Device) technology to achieve high-resolution imaging, improving accuracy, reducing labor, and facilitating rapid prototyping for HDI boards.
This video shows how a laser direct imaging machine creates circuit patterns on a PCB .
Suppliers for 375nm 10W laser:
civillaser 375nm 10W High Power Semiconsuctor Laser Lab Laser System
China Suppliers at Aliababa . High Reliablility High Output Power 375nm 10W Violet Fiber Coupled Laser Module (LY3710-2AF)
BeamQ for 375nm 10W Fiber Coupled Laser for LDI Exposure Machine