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A warm welcome to the Armstrong Optical website. We offer a wide range of optical metrology, imaging products and systems to a diverse array of industries with an even broader variety of applications. Please browse our various product pages and if something catches your eye feel free to download the appropriate PDF. Alternatively, email or visit our contact page or call the number at the top of the page and we’ll be happy to discuss your application in the strictest confidence. 


About Armstrong Optical

Founded in 1997, Armstrong Optical Ltd. is a specialist supplier of optical metrology instruments for both R&D and production. This includes interferometers for measuring shape, distance and thickness and instruments for MTF, optical centration, focal length and most optical parameters. In addition we supply chromatic confocal sensors and controllers and custom optical / mechanical assemblies. We are partners in the UK for Trioptics, SIOS, Precitec Optronik and Optical Perspective Group(See all our Suppliers here).


Trioptics is the leading manufacturer of optical test equipment for research and production. This includes instruments to measure optical centration, lens thickness, precise angles, straightness, surface form, MTF and other optical parameters including alignment for wavelengths from the UV to the IR. In addition they manufacture precision electronic autocollimators for a range of applications and complete high performance systems for accurate turning of optical components and housings. Every step of the optical manufacturing process is covered including camera and electronics integration.


SIOS GmbH is world renowned for the development and manufacture of laser based interferometric precision metrological instrumentation. Their systems range from standalone measurement devices to complete measuring stations for measuring displacement, angles, weights, forces, pressures and vibration.


Precitec Optronik is the specialist for laser material processing and optical measuring technology. The wide range of CHRocodile sensors utilise several distinct techniques to perform high speed distance and thickness measurements. Chromatic confocal and interferometric methods are used to measure nearly all surfaces. Various white and infrared light sources are available to extend the ranges of materials that we can measure.


Optical Perspectives Group designs and manufactures Optical Alignment and Optical Inspection Instruments that make it easy to maximize the performance of optical systems.


We are happy to offer either individual systems or complete tailored solutions to specific requirements and welcome as much dialogue with our customers as possible. So please feel free to contact us at any time either by phone or email.


Our Primary Partners / Featured Products

Trioptics Featured item – TriAngle Electronic Autocollimator

The TriAngle electronic autocollimators are non-contact optical test tools for the high-precision measurement of angular displacements of specular reflective surfaces and the accurate angular alignment of optical or mechanical parts.


TriAngle autocollimators have a versatile modular design which allows them to be fitted with a wide selection of objective tubes, different sensors, reticles and light sources. With objective tubes of different focal lengths and apertures, the optimum measurement solution regarding angle resolution and measurement range is easily found.

More information can be found here or by clicking on the product image above.

SIOS Featured Item – Differential Laser Interferometer


SIOS Laser interferometer model SP 2000 DI


The Differential Laster Interferometer SP-DI Series offers extremely high long-term stability, achieved by measuring relative motion between the measuring point and a fixed reference point.

It provides differential length and angle measurement with the highest accuracy, minimising environmental effects.

The sensor head is made of stainless steal as standard.

More information can be found here or by clicking the product image above.


Precitec Featured Item – CHRocodile C
Precitec Logo  
Precitec CHRocodile C crocodile CHRocodile C in stand
The image on the right shows the CHRocodile C on a custom stand, measuring the thickness of a glass wafer. 

The ultra compact CHRocodile C sensor with its robust and integrated design offers high precision distance and thickness measurements.

CHRocodile C is specially suited for industrial inline use and easily integrates into any kind of inspection machine.

The extraordinary high dynamic range and the outstanding signal-to-noise ratio of the CHRocodile sensors ensure the best measuring results on any kind of surfaces.

Thanks to its compact dimensions and excellent performance/price ratio, CHRocodile C is the ideal alternative to classical laser triangulation sensors.

More information can be found here or by clicking the left-hand side product image above.



Optical Perspective Groups Featured Item – Point Source Microscope (PSM)
Optical Perspectives Group Logo OPG  
Point Source Microscope PSM  

The Point Source Microscope enables optical alignment by detecting and locating optical features on the micrometer level and then relating them to mechanical fixtures, datums and features such as steel balls.

The PSM is also valuable for aligning aspheres and off-axis aspheres by using the aberrations aspheres produce when they are misaligned.

In addition to its use for alignment, the PSM is useful for incoming inspection for radius of curvature, focal length, figure errors larger than 8th wave and centring errors.

More information can be found here or by clicking the product image above.


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