NASA NTRS · 19720000386
Rotary shutter mechanism contains optical elements
Abstract
Two cylindrical shutter mechanisms having fixed outer sleeves and rotating inner sleeves use single stepping motor and Geneva mechanism to sequentially move optical components into path of ultraviolet monochromator for output control to photomultiplier. Photometric and wavelength calibration sources insure shutter positions according to operational phases.
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Weilbach, A. O.. 1972-12-01. Rotary shutter mechanism contains optical elements. https://ntrs.nasa.gov/citations/19720000386
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