Accession Number : AD0164336

Title :   Apparatus for Taking Photographs at Times of Minimum Image Motion.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Costianes,Peter J.

Report Date : 12 SEP 1972

Pagination or Media Count : 6

Abstract : In the patent image velocity detection means are incorporated into photographic apparatus and are used to activate the camera at a time of minimum image motion. Light from an object of interest passes through a photographic lens and is imaged on a mask having a periodic transmission. As the image moves across the mask, the total light reaching an integrating photodetector directly behind the mask varies as a function of time and image velocity. This variation sets up a proportional electric current which is analyzed to determine the instantaneous image velocity. When a minimum instantaneous velocity is detected a signal is generated which trips the camera shutter.

Descriptors :   *Photographic equipment, *Image motion compensation, *Patents

Subject Categories : Photography

Distribution Statement : APPROVED FOR PUBLIC RELEASE