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.
The reticles of a focusing Autocollimator (focusing Autocollimation telescope) can be moved out of the focal plane of the objective lens so that the autocollimator can be focused at finite distances and the beam becomes divergent (producing a virtual image) or convergent (real image).The shape of the beam -convergent or divergent-depends on the direction in which the reticles are moved.
To meet customer requirements for testing optical instruments with large field of view, TRIOPTICS developed a new and unique line of autocollimators.
To meet customer requirements for testing optical instruments with large field of view, TRIOPTICS developed a new and unique line of autocollimators.
The reticles of a focusing Autocollimator can be moved out of the focal plane of the objective lens so that the autocollimator can be focused at finite distances and the beam becomes divergent (producing a virtual image) or convergent (real image).The shape of the beam -convergent or divergent-depends on the direction in which the reticles are moved.
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