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  4. Galvo Scanners

Galvo Scanners

CRS 4 KHz Resonant Scanner
Novanta Photonics
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CRS 4 KHz Resonant Scanner
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Elevate your high-speed imaging applications to new heights with Novanta's CRS Series Resonant Scanners, meticulously engineered by Cambridge Technology. These cutting-edge scanners offer a revolutionary solution for rapid scanning rates, delivering unparalleled speed, accuracy, and reliability for a wide range of demanding ...

Specifications
Max Aperture (Beam) Size: 12 x 9.25 mm
Wavelength: 351 nm (UV), 355 nm (UV), 400 nm (Violet/Blue), 405 nm (Violet/Blue), 527 nm (green), 532 nm (green), 800 nm (near IR), 810 nm (near IR), 1054 nm (IR), 1064 nm (IR), 1070 nm (IR), Other Broadband, Other (see Data Sheet)
Max Scan Angle: 10 - 24 degrees
Repeatability: < 250 μrad
Linearity: -- %
Data Sheet
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Frequently Asked Questions

Galvo Scanners also known as “Galvanometer Scanners” or “Scanning Galvos” or simply “Galvos” are an essential component in the laser beam steering technology for many laser markers and laser engravers. A galvo scanner is comprised of a high performance motor that is able to rotate (oscillate) around an axis at a fast angular speed and a permanently attached mirror, which it rotates. Their high degree of linearity and reproducibility allow steering laser beams with high speed and precision.

The core of the galvo scanner is the galvanometer – an electromechanical actuator that deflects in response and proportional to the applied electric current. To precisely control the degree of rotation a servo-control system is used to calibrate and ensure the linearity and the reproducibility of the angular motion.

Galvo Laser Marker or Galvo Laser Engraver refers to laser machines that utilize gavo scanner based beam steering technology. They are equipped with a laser scan-head comprised of two galvo scanners and an F-Theta wide aperture lens that focuses the laser beam on to the object being engraved. Similarly, Flatbed Laser Markers or Flatbed Laser Engravers refer to the machines that utilize linear XY motion based beam steering technology. The Galvo Lasers are characterized by a high processing speed compared with flatbed laser systems. On the downside, galvo lasers typically have much smaller work field compared with that of flatbed lasers. The work field (area) for galvo lasers is primarily determined by the aperture and the focal length of the F-Theta lens on the galvo scan head.

Linearity (and conversely nonlinearity) is a measure of deviation of travel path from that identified by the built in feedback system.

The rotor inertia of a galvo scanner measures the amount of torque needed to cause a unit of angular acceleration about the axis of rotation.

The repeatability of a galvo scanner measures the degree of precision of the scanner to orient the mirror to the same position. For example, 5 urad of repeatability means that if the same command to position the galvo at a specified angle is given, the deviation from the set position upon subsequent measurements will be less than or equal to 5 urad.

If you are looking for a galvo scanner as a replacement, you will want to ensure the compatibility of the replacement part with your laser scan head. The key parameters to look out for are the max beam (aperture size), the wavelength coating of the mirror, scan range, torque, dimensions, and weight. You will also want to look into the input electrical requirements and interface protocols to ensure that it’s compatible with your system.

There are 2 different Galvo Scanners from suppliers and manufacturers listed in this category. In just a few clicks you can compare different Galvo Scanners with each other and get an accurate quote based on your needs and specifications. Please note that the prices of Galvo Scanners vary significantly for different products based on various factors including technical parameters, features, brand name, etc. Please contact suppliers directly to inquire about the details and accurate pricing information for any product model. Simply navigate to the product page of interest and use the orange button to directly reach out to the respective supplier with one click.

Did You know?

Galvo Scanner also known as “Galavanometer Scanner” or “Scanning Galvo” is an essential component in the laser beam steering architecture for many laser marking and laser engraving machines. The entire beam steering system that utilizes galvo scanners is typically comprised of two galvo scanners that provide angular steering of an incident laser beam around F and theta axes and a large aperture F-Theta lens that focuses the beam on to the sample being marked or engraved. That entire beam system is often called Galvo Scan Head and allows precise positioning of the focused laser beam within XY marking field on the focal plane. A typical Galvo Scanner is comprised of a high performance galvanometric motor that oscillates around its axis and an attached mirror that is rotated as the galvo scanner is activated. Galvanometer Scanners often utilize photoelectric sensors as a feedback mechanism that ensures the high reproducibility, motion linearity and accuracy of positioning. Most Galvo Scanners operate in a wide range of motion (often +/-40 degrees or higher) and offer a high degree of linearity of > 99%.
External links:
1 - Intro to Laser Scanning
2 - Laser Marking System: Complex Design For Elegant Patterning
3 - Laser Scan Heads: Tutorial