When galvanometer (galvo) scanners are not fast enough, a Polygon Scan Head may be the solution. A Polygon Scan Head can scan at hundreds of meters per second. Here is a block diagram of a single axis Polygon Scan Head. …
The high speed and high laser damage threshold of polygon scanners are required for many high power and Ultrafast / Ultra Short Pulse (USP) material processing applications. With pulse lasers operating at MHz rates, traditional galvanometer scanners are not fast…
The concept of laser paint stripping has been around for a long time. Laser ablation is attractive because it can avoid damage to the part caused by abrasive methods of paint removal and does not require the use of toxic…
Polygon scanners are most commonly running on Ball Bearings or self-generating Air Bearings. Ball Bearings work well from zero to 10,000 RPM. Ball bearings may be run at double that speed but the life will be reduced and grease misting…
This calculator makes it easy to compute polygon scanner / polygon scan head scan rate, speed of spot on the target and then compute the needed laser pulse rate based on spot size and required overlap. POLYGON SCANNER CALCULATOR Plug…
Life in the Ultrafast Lane with Fiber Lasers describes the progress being made by the industry to increase power levels of Ultrafast lasers using fiber technology. The article illustrates the superiority of Ultrafast /Ultra Short Pulse (USP) lasers for clean…
Here are contrasting differences between resonant and polygon scanners. Scan Rate vs Scan Angle A resonant scanner is designed for a fixed scan rate but the scan angle is variable. A polygon scanner is designed for…
It has been recommended that a DC power supply without a crowbar (over-voltage protection) circuit be used to run polygon scanners and polygon scan heads. The reason is that the BDC motor generates back EMF when the polygon decelerates. It…
It is common practice in low power polygon scanner systems to use the working beam to trigger a Start-Of-Scan (SOS) detector. The SOS trigger is essential for accurate laser scanning. Polygon Scan Heads, used for material processing, employ high power…
It is a fine achievement for Road Runner to push the top speed of polygon scanning to a record breaking 70,000 RPM and to solve the noise problem with a whisper quiet design! See and hear a Road Runner demonstration…