Accession Number : ADD002177
Title : Square Wave Light Generator.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Modert,Eugene F
Report Date : 25 Sep 1975
Pagination or Media Count : 8
Abstract : In the patent application light rays are provided in square wave form at uniform intervals. A source of light is provided within three cylinders. The first cylinder being stationary has an aperture extending 120 degrees. The second and third cylinders each have arcs extending 240 degrees, and rotate in opposite directions. In operation the device gives equal light and dark periods with a rise and fall time one-half the period of the full open and full close time. The length of the periods are dependent on the rotational velocity of the cylinders.
Descriptors : *Signal lights, *Lighting equipment, *Light sources, Patents, Infrared radiation, Cylinders, Square waves
Subject Categories : Air Condition, Heating, Lighting & Ventilating
Escape, Rescue and Survival
Distribution Statement : APPROVED FOR PUBLIC RELEASE