Galvo and Controller Combination Offers Infinite Field of View and >24-Bit Resolution

Written by: Aerotech Inc | Published:

Aerotech's Nmark AGV-HP advanced galvanometers use innovative optical feedback technology to increase resolution to greater than 24 bits. Both the standard AGV and higher performance AGV-HP series scanners may be directly driven by Aerotech's Nmark CLS galvo controller, which offers a full suite of advanced application tools that include Position Synchronized Output (PSO) and Infinite Field of View (IFOV). The AGV is available with 10, 14, and 20 mm apertures with standard F-Theta lens interfaces to provide maximum application flexibility. The AGV can be configured to accommodate 1064, 532, and 355 nm wavelengths, with other wavelengths available upon request. A variety of focal lengths are standard, with correction files provided to remove lens distortion effects.

Advanced Features
The ability to accurately place a laser spot as a function of X/Y axis position is a key feature of Aerotech's linear positioning tables for laser processing applications. With the release of the Nmark CLS, this functionality is now available for scanner applications. The Nmark CLS offers Position Synchronized Output (PSO) that ties laser pulses directly to galvo position. While other scanner controllers use time-based pulses to shutter laser light, the Nmark CLS PSO allows true position-based triggering. The ability to accurately trigger the laser as a function of position removes the need to program mark, jump, and polygon delays, resulting in reduced programming complexity. By using the Position Synchronized Output functionality, scanner-based processes can now be programmed in the same fashion as traditional X/Y stage-based applications.

The Infinite Field of View feature seamlessly synchronizes servo and scanner motion under one controller environment to allow fast scanner positioning over the entire servo travel, eliminating galvo field of view constraints. The Nmark CLS has two high-power drive circuits, one for each axis in the scanner, that are optimized to get the peak performance from the AGV product family.

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