Accession Number : ADD003592

Title :   Photo-Electric Lightning Detector Apparatus.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Krider,Edmund Philip

Report Date : 24 Feb 1976

Pagination or Media Count : 5

Abstract : The apparatus is used primarily to monitor the occurrence of lightning discharges in the vicinity of a known objective such, for example, as a large rocket launch tower or other object which might be detrimentally affected by the lightning. A continuous, linear single-axis, position-sensing photodiode is deployed a predetermined distance from the objective and an optical objective lens focuses a relatively narrow field of view, such as a 40 deg field on the photodiode. The arrangement is such that the image of a lightning discharge occurring within the field of view is in the form of a focussed narrow-line channel bisecting the length of the photodiode at varying locations dependent upon the actual location of the lightning discharges itself.

Descriptors :   *Patents, *Photodiodes, *Lightning, Analog systems, Delay, Monitors, Computers, Propagation, Discharge

Subject Categories : Atmospheric Physics
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE