Collimation
The collimation (lat. Colli mare , modified from collinear , "lead in a straight line") referred to in the optics , the parallel direction of divergent light beams . The associated lens is called a collimator or converging lens .
A autocollimation is present when located behind the collimator, a mirror is located and the light rays by the same lens reflects be. The image remains sharp even if the position of the mirror is shifted. The collimation axis is the sight and reticle line of the telescope determined by the crosshair .
The laser represents a special form of parallel guided light .
Which in the light, deflection of electrons is generated in a synchrotron on relativistic accelerated speed, is also highly oriented in parallel.
In measurement technology
In metrology , collimation means that the real value of a measured quantity exactly matches the information read on the measuring instrument . If this agreement does not exist, the instrument is subject to a collimation error which must be eliminated or its size and position precisely determined so that it can be taken into account for each individual measurement.