The TriAngle® Systems 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.

The digital camera interface enables the use of a notebook or desktop PC, or a mobile touch-screen display unit for measurements in the field. The comprehensive OptiAngle® software records, analyzes, stores and reports the measurement results for later reference.

  • Absolute and relative angle measurements of mirror surfaces
  • Absolute and relative angle measurements of collimated sources
  • Wedge angle measurement
  • 90° prism errors
  • 45° prism errors
  • Wobble (run-out) measurement of rotating samples
  • Straightness measurement
  • Flatness measurement
  • Squareness measurement


User defined measurement procedures can be added into the standard software by a plug-in mechanism. In addition there is an open programming interface for the integration of the TriAngle® measurement functions into other applications. Upon request, TRIOPTICS offers customized TriAngle® instruments, as for example:

  • Increased measurement ranges
  • Larger apertures
  • Vacuum compatibility
  • Focusing objectives
  • Customized illumination
  • Customized sensor technology


TriAngle electronic autocollimators:


The most versatile electronic autocollimator for standard applications.


TriAngle® UltraSpec

Offers high-precision angle measurement systems for extremely high demands on angle resolution and measurement accuracy.


TriAngle® HiSpeed

The ideal autocollimator for measurement of vibrations or rapidly moving samples.


TriAngle® Focus

Employs focusing object tubes for contact-free optical radius measurements.


TriAngle NIR - Electronic Autocollimator

Commonly used for applications which require measurement at the design wavelength in the NIR.


TriAngle® LASER

Ideally suited for the measurement of small optical components, surfaces of low reflectivity or long distance measurements.


TriAngle® Large Field 

Electronic autocollimator with large measuring range.


TriAngle® Very Large Field (VLF)

Electronic autocollimator with very large measuring range.


TriAngle® Short

The compact and universal electronic autocollimator.


D-275 Automatic Alignment Telescope

Automatic Alignment Telescope


no images were found

Triangle Upgrades & Accessories

In addition to the TriAngle electronic autocollimator series, TRIOPTICS offers a large range of opto-mechanical accessories, often required for certain standard applications.


no images were found

New Flatness Software Plugin

A new Software Plugin for Flatness, Straightness, Parallelism and Squareness Measurement with TriAngle is available. Required mechanical accessories will be gradually revised or developed.


Custom Made Stands from Armstrong Optical

In addition, we can provide you with stands custom made by Armstrong Optical.

no images were found

Additional Information
TriAngle® brochure
TriAngle® VLF brochure
Customised TriAngle® Solutions
Measurement Applications Overview
Measurement Application: Straightness
Measurement Application: Wedge
Measurement Application: Indexing or Rotary Table Calibration
OptiAngle® Software
TriAngle® Accessories
TriAngle® UltraSpec brochure

no images were found



For your demonstration please contact Armstrong Optical (44 (0)1604 654220) or CLICK HERE

Price: £0.00