Computer-driven stepper motors rotate the mirrors to obtain the desired angle of incidence. |
They are suitable for use with any standard two-phase stepper motor and offer four, user-selectable resolution settings. |
Unlike earlier reductions, this particular transition requires a major design shift in stepper optics from refractive to reflective. |
The relationships linking the stepper motor position and wavelength have been obtained by averaging the results of more than 20 spectra. |
The drums were mounted on a platform that could be raised and lowered by an additional stepper motor. |
A computer-controlled stepper motor allowed the user to select from 31 filters. |