Definition correcting device incorporated in a mechanism for the axial adjustment of components of an optical system

摘要

A definition correcting device arranged in a mechanism for relative adjustment of axially spaced movable components of an optical system, comprising means for rigidly securing said components in order to axially move the components, operable means capable of displacing the said securing means along the optical axis and definition adjusting means adapted for the operation of definition correction, and of correcting the definition of the movable components independently of both the relative adjustment of the axially spaced movable securing means and the operation of the operable means, whereby the definition correction eliminates the influence of mechanical errors associated with the said securing means and operable means.