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Armstrong Optical

We offer a wide range of optical metrology 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, 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 – OptiSurf® LTM
Trioptics Logo


OptiSurf LTM (Lens Thickness Measurement) from Trioptics

With the OptiSurf® LTM (Lens Thickness Measurement), TRIOPTICS offers a precise center thickness measurement system for single lenses and doublets that seamlessly integrates into any production process. The high precision low-coherence interferometry is based on the established OptiSurf® technology and measures single lenses and doubles with a glass thickness of up to 150 mm with a precision of ±0,5 µm. The non-contact measurement system is gentle on sensitive surfaces and coatings. In addition to the center thickness, the sag value can also be determined.

More information can be found here.

Trioptics Featured item – ImageMaster® Afocal
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Trioptics Image Master Afocal


With the ImageMaster Afocal® optical afocal systems like telescopes, riflescopes and binoculars are tested in terms of functionality and image quality with a variety of specific optical parameters. The measurement process with the ImageMaster® Afocal is manual or fully automated. The measurement is possible for finite and infinite object distances. A wide range of parameters such as the MTF or magnification are already measured in the standard configuration. Specific measurements such as parallax (free distance) can be easily performed with a focusable collimator. Measurements of other specific parameters, such as the eyerelief of riflescopes and spotting scopes or the subjective and objective field of view, can be performed with upgrades.

More information can be found here.

Trioptics Featured item – µPhase® Vertical Pro
Trioptics Logo


uPhase Vertical Interferometer


The µPhase® Vertical Pro is a compact and automated stand, enabling measurement and radii of multiple samples in one cycle. Key features include measurements of spherical, toric and aspheric lenses and molds of glass, plastic or metal and a highest accuracy for sample radii of up to 60mm.

More information can be found here.


Trioptics Featured item – TriAngle Electronic Autocollimator Range
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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.

Trioptics Featured item – OptiCentric® 101
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Trioptics OptiCentric


The OptiCentric® product group represents the global standard for optical centration testing and manual and automated cementing and bonding of lenses and lens assemblies. With its extremely high degree of centration accuracy and integrated operation, OptiCentric® systems are indispensable in modern optics productions. It makes no difference whether the sample has a small or very large diameter, works in the visual or infrared spectral range, or is to be cemented, bonded or just measured: modular OptiCentric® systems permit a wide range of different applications and samples for optimum composition.

With its especially stable structure and an increase in processing speed by the factor of 4, the OptiCentric® 101 is increasing precision and efficiency.

More information can be found here or by looking through the brochure.


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 steel as standard.

More information can be found here.


Precitec Featured Item – CHRocodile C
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Precitec CHRocodile C crocodile Custom Made Stand Precitec CHRcodile C
The image on the right shows the CHRocodile C on a custom stand from Armstrong Optical, measuring the thickness of a glass wafer. 

The ultra-compact CHRocodile C is the ideal device for high-precision distance and thickness measurements. The combination of optoelectronic and optical probe in a single housing not only saves space but also offers great value for money. CHRocodile C is the alternative to classical laser triangulation sensors.

With its robust, compact and easily integrable design, the CHRocodile C is the ideal device for high-precision distance and thickness measurements in any industrial inline or offline application.

An ultra-high dynamic range and outstanding signal-to-noise ratio ensure optimal measurements on any kind of surface. The coaxial measurement ensures no shadowing. Hence, the CHRocodile C is a compact and economical replacement for laser triangulation sensors. Thanks to interchangeable optical probes the CHRocodile C can be adapted to any measurement task.

The CHRocodile C HS has a larger beam spot and is specially designed for high-intensity measurements on dark surfaces


More information can be found here

Further informaton about custom-made stands from Armstrong Optical (as show in the right hand image) can be found here.


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.



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