[Stereophotogrammetric apparatus for determining the parameters of protective glasses]

The new stereophotometric method for the determination of the parameters of the protective goggles with the use of the system of mirrors is analyzed. The formulae for the calculation of the spatial coordinates of reference points on the human head and face and for the conversion of the coordinates of the mirror image into those of the real image are presented. The stereophotometric equipment for the realization of this method is described. The results of the experiment carried out to determine the accuracy of the calculation of spatial coordinates are presented.