BLINK High-Speed Focuser

Patent-Pending Design is Compact and Blazingly Fast

“Blink and you’ll miss it… 30 times!”


Nutfield Tech's BLINK High-Speed Focuser

Nutfield Technology’s BLINK High-Speed Focuser offers blazingly fast focusing performance in a compact, maintenance-free package. Our patent-pending ultra-stiff air bearing design results in a friction-free bearing that offers stable servo bandwidths in excess of 500 Hz. The BLINK High-Speed Focuser is capable of continuous operation with a 50G peak sine wave, and its ultra low moving mass design (28 grams with lens) minimizes reaction forces. Its high efficiency motor complements the air bearing performance allowing for 100% duty cycle 1 mm focusing moving at less than 12 watts RMS.

Nutfield Tech’s initial release features a 13mm clear bore and 13mm of stroke. The BLINK High-Speed Focuser can be fitted with a variety of standard 1/2″ diameter lenses to suit any application. It’s also available as either a stand-alone focuser or integrated with Nutfield Technology’s popular post-objective scan heads, like Nutfield Tech’s 3-axis Contour.

With only one moving part, BLINK offers exceptional reliability and service life when compared to traditional taut band actuators.

While direct bonded optics remain the lowest moving mass and highest performance solution, the addition of an industry-standard ½” lens tube is available to address field applications that may require a quick change lens configuration. Our lens tube option still accepts the same ½” singlets as our direct bonded model, but includes an additional length threaded barrel that accepts industry standard 40 pitch retaining rings and soft mounts.

Contact Nutfield Technology for assistance with identifying a solution for your laser application.


Features for the BLINK High-Speed Focuser include:

Very high dynamics – continous operation @ 50G peak sine
Large fields, small spots and replaces f-theta lenses
Frictionless, non-contact air bearing/voice coil design (patent pending)
> 500 Hz Servo Bandwidth
13mm clear aperture and 13mm stroke
Ultra-low reactive forces


Specifications for the BLINK High-Speed Focuser:

Frequency Peak accelerationPeak currentAverage power
Bonded Lens
100 Hz197m/s2 (20 G’s)1.0 Amps2.3 Watts
125 Hz308m/s2 (31 G’s)1.4 Amps4.4 Watts
141 Hz392m/s2 (40 G’s)1.8 Amps7.3 Watts
157 Hz487m/s2 (50 G’s)2.2 Amps11.1 Watts
Removable Lens
100 Hz197m/s2 (20 G’s)1.1 Amps2.7 Watts
125 Hz308m/s2 (20 G’s)1.5 Amps5.2 Watts
141 Hz392m/s2 (20 G’s)2.0 Amps8.6 Watts
157 Hz487m/s2 (20 G’s)2.4 Amps13.2 Watts
Specifications subject to change without notice.


Applications for the BLINK include:

3D, Contour Surface
High Speed Focus


Accessories for the BLINK High-Speed Focuser includes:

QD-2000 Servo Amplifier