Optically Activated Exciplex Shutter/Attenuator.
DEPARTMENT OF THE NAVY WASHINGTON D C
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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 shutterattenuator 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.
- Safety Engineering
- Protective Equipment