Accession Number : ADD003227

Title :   Optically Activated Exciplex Shutter/Attenuator.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Weiss,Joel A ; Sheridan,James P

Report Date : 21 Sep 1976

Pagination or Media Count : 4

Abstract : A device is described which provides rapid attenuation of incident light, the degree of attenuation being proportional to the intensity of the light. This system can be used for eye or device protection in sunlight or other situations in which the illuminating source has a spectral output which includes radiation in the 300-400 nm spectral region. The shutter/attenuator can achieve its maximum extinction in less than 100 psec after being illuminated and returns to maximum transmission within 10 nsec after light is extinguished. This invention provides protection against intense fast-rising pulses of optical radiation such as encountered in close proximity to an explosive blast. The device makes use of optical elements which permit radiation of a certain wavelength to excite a bi-molecular exciplex solution. The exciplex solution reacts to a range of radiation wavelengths whereas optical elements prevent passage of radiation below and above the operative range of an exciplex solution such as anthracene and diethylaniline.

Descriptors :   *Patents, *Optical filters, *Radiation protection, *Safety equipment, Organic compounds, Anthracenes, Anilines, Isomeric transitions, Protective equipment, Explosions, Eye

Subject Categories : Safety Engineering
      Optics
      Protective Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE