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Microlenses are tiny optical devices used to focus light onto cameras and fiber optics. While debugging a different project, I stumbled on a technique that made hemispherical depressions. So I made some microlenses.
CONSIDER SUBSCRIBING 🥰
☕Buy me a coffee? https://www.buymeacoffee.com/Breaking...
🔬Or Patreon if that's your jam: / breakingtaps
📢Twitter: / breakingtaps
💻Discord: / discord
==== Laser Parameters ====
Had some requests for more details about the laser parameters. I'm not sure how much this is dependent on my particular machine vs. generally applicable, but in case it helps:
…...more
Microlenses are tiny optical devices used to focus light onto cameras and fiber optics. While debugging a different project, I stumbled on a technique that made hemispherical depressions. So I made some microlenses.
CONSIDER SUBSCRIBING 🥰
☕Buy me a coffee? https://www.buymeacoffee.com/Breaking...
🔬Or Patreon if that's your jam: / breakingtaps
📢Twitter: / breakingtaps
💻Discord: / discord
==== Laser Parameters ====
Had some requests for more details about the laser parameters. I'm not sure how much this is dependent on my particular machine vs. generally applicable, but in case it helps:
50W fiber laser (non-MOPA). Generic out of china, JPT fiber laser inside
Power ranged from 2-20%, 40kHz frequency, 500mm/s to 3000mm/s, 63mm f-theta lens, single pass
Most good ablation craters were in the 10-15% power range. Speed from 1500 to 3000mm/s depending on how much spacing you want between craters.
Power in range from 6-10% tends to create dimples and spikes. Below 6% and there's no visible effect