Autocollimator (Autocollimating Telescope)

The two reticles of an autocollimator with fixed focus setting are positioned in the focal plane of the corrected objective lens, so that the emerging beam is parallel. This usual configuration is known as infinity setting, i.e the autocollimators are focused at infinity.

Key Features

  • Fixed focus setting with infinite setting
  • TRIOPTICS offers autocollimators with different focal lengths depending on the application
  • Optionally with reticle changer (RC), filter changer (FC), or with reticle and filter changer (RC/FC) 
  • Available with straight or 90° angled viewing position
  • Wide range of standard reticles  and production of custom reticles if required
  • The collimators can be equipped with a dual micrometer screw for shifting the reticle (optionally with digital display)


  • Angle measurement in optical components
  • Measurement of wedge and deflection angles
  • Measurement of centration errors