Abstract
takes place with movement of the FLG. The algorithm worked out facilitated optimization of the FLG for producing its best image. This, in turn, gives a maximum permissible range of FLG displacement with minimization of the size of the aberrated image. The dispersed field image is formed on the focal plane of the lens which collects the dispersed radiation and is, thereafter, projected on the FPZS rule in a reduced form. The optical system made it possible to obtain approximately 85% of the maximum permissible displacement and distortion equivalent to error of the order of • in measuring the geometrical characteristics. Since distortion exists in the same direction for both positive and negative displacements, this error can be of the order of •
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