Bespoke lens raises micromachining resolution
A
Resolve Optics product story
Edited by the Engineeringtalk editorial team
Nov 6, 2006
Leading micromachining systems manufacturer selects unique F-theta laser scan lens for a 25W 532nm Q-switched Nd:YAG laser.
Resolve Optics was selected by a leading micromachining systems manufacturer to be the supplier of a unique F-theta laser scan lens for a 25W 532nm Q-switched Nd:YAG laser.
Looking to achieve ultrafine resolution laser cutting and etching, the micromachining systems manufacturer required a F-theta scan lens that combined high performance, durability and compactness.
Off-the-shelf scan lenses for high-powered lasers typically failed to meet the demanding high resolution (small focused spot size), tight tolerance on spot size variation or lens durability specifications.
Using a novel telecentric design, the Resolve Optics 100mm focal length laser scan lens achieved excellent F-theta performance, with resolution (20um focused spot size) very close to the diffraction limit over a flat image plane.
The variation of spot size from the average spot size over the full scanned field was minimal.
A proprietary coating on the laser scan lens provided both high on-axis and off-axis transmission as well as the desired durability with a damage threshold 1000x higher than the laser power being used.
Applications for F-Theta scan lenses include high-energy density laser marking devices, graphic arts printers, image scanners and various information processing equipment used in the laser scanning industry.
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