Positioning equipment

Symetrie’s NanoPos is a miniature hexapod of 68mm height for positioning and adjustment of precision components in six degrees of freedom, with a 10nm resolution.

An exact science

Some of the latest positioning solutions for photonics equipment on the market

Nanopositioning using standing wave piezoelectric motors

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In photonics motion control applications, how do you combine speed with nanometric precision and unlimited travel? These seemingly conflicting requirements are uniquely addressed by ultrasonic, standing-wave, direct-drive piezoelectric motors. This technology provides unlimited linear or rotary motion of a ceramic tip that transfers drive to a target, operating in a manner similar to a DC servo motor but with much higher resolution, an order-of-magnitude higher speed and a wider dynamic range.

Position-sensing detectors characteristics

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Silicon photodetectors are commonly used for light power measurements in a wide range of applications such as bar-code readers, medical imaging, spectroscopy, and laser printers.  There is another function, however, which utilises the photodetectors as optical position sensors. They are widely referred to as Position Sensing Detectors (PSDs). The applications vary from human eye movement monitoring, 3D modelling of human motion to laser, light source, and mirrors alignment.

A Hybrid Hexapod being used for camera image stabilisation (Image: ALIO Industries)

Setting the standard

As motion control systems reach ever-higher levels of precision, new standards and methods are required to better define their capabilities to end users, Matthew Dale finds

Piezoelectric Nanopositioning – Open Versus Closed Loop Control

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Image of Piezosystem Jena X-Ray Collimation Shutter

Dr Mike Soulby of Pro-Lite explains the physics of the piezoelectric effect, how the inverse piezoelectric effect is employed in precision nanopositioning, and the differences between open and closed loop control of piezoelectric devices.

Photonic Solutions offering miniaturised rotary and linear micro-motion modules for smarter product development

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In many of today’s industrial markets there is a continual push for product miniaturization. The M3 family of piezoelectric motion controllers offer unrivalled compactness helping product designers to achieve more compact solutions. Manufactured by New Scale Technologies, the M3 micro-stages and actuators are the smallest and most precise closed-loop positioning solutions available.

GMx series mounts

Siskiyou has introduced a new range of diffraction grating mounts, the GMx series, which combine rotational adjustment of square components in all three axes and support both reflective and transmissive optics

LDMount

The LDMount from Wavelength Electronics is a laser diode mount with integrated heat sinking and simple connections between the drivers and the diode laser

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