john banks
12-28-2012, 10:23 AM
HightSpeed-galvo-scanner-for-laser-lighting-NEW-Without-Show-Card-/230688515891?pt=US_Stage_Lighting_Single_Units&hash=item35b61b6733
If you took something like the above and pointed a suitable laser at it, changing the galvo mirrors to suit the wavelenth, and used a suitable lens, plus safety enclosure and interlock, would it be correct to say that the control signals needed would be:
Analog voltage from a DAC for X axis galvo
Analog voltage from a DAC for Y axis galvo
TTL or whatever the laser needs to enable/modulate its output (assuming solid state to avoid needing shutters)
I know producing a working system needs lots of details, but I wondered if conceptually I'd got it? Whilst you may not be driving it to 20000 points per second, it looks like the Ebay item is closed loop and simply moves the galvo to a position related to the voltage input for each axis?
Wonder if this could produce an interesting high speed marking system, especially with something like this:
itm/Coherent-High-Power-Lab-Industrial-Diode-Laser-FAP800-30W-808nm-30-W-33A-/390518444010?pt=LH_DefaultDomain_0&hash=item5aecb68fea
or
/itm/Industrial-808nm-15000mw-15Watt-Infrared-Focusable-high-power-laser-burning-TTL-/180943013777?pt=LH_DefaultDomain_0&hash=item2a210b4791[/url]
If you took something like the above and pointed a suitable laser at it, changing the galvo mirrors to suit the wavelenth, and used a suitable lens, plus safety enclosure and interlock, would it be correct to say that the control signals needed would be:
Analog voltage from a DAC for X axis galvo
Analog voltage from a DAC for Y axis galvo
TTL or whatever the laser needs to enable/modulate its output (assuming solid state to avoid needing shutters)
I know producing a working system needs lots of details, but I wondered if conceptually I'd got it? Whilst you may not be driving it to 20000 points per second, it looks like the Ebay item is closed loop and simply moves the galvo to a position related to the voltage input for each axis?
Wonder if this could produce an interesting high speed marking system, especially with something like this:
itm/Coherent-High-Power-Lab-Industrial-Diode-Laser-FAP800-30W-808nm-30-W-33A-/390518444010?pt=LH_DefaultDomain_0&hash=item5aecb68fea
or
/itm/Industrial-808nm-15000mw-15Watt-Infrared-Focusable-high-power-laser-burning-TTL-/180943013777?pt=LH_DefaultDomain_0&hash=item2a210b4791[/url]