Accession Number : ADD016150

Title :   Advanced Eye or Sensor Protection and High Speed Variable Optical Attenuation System.

Descriptive Note : Patent, Filed 14 Feb 92, patented 19 Oct 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Cushman, William B

Report Date : 19 Oct 1993

Pagination or Media Count : 5

Abstract : In order to protect the eyes or other sensor, from light produced, e.g., by modern laser weapons which have extremely fast onset times and high power per pulse, a protective shutter device is provided which is based on the integrative property of such sensors. The sensor is shielded for a large proportion of the time and only exposed after a light detector associated with the protective device has assured a safe environment. The normal exposure provided is a series of rapid image-views that integrate over time within the sensor. In an eye goggles embodiment, clear vision is maintained and a fast-response variable-density 'sunglass' is perceived by the wearer. Only one eye is exposed and thus at risk at any one time, and that eye only about 10% of the total time. A high-speed mechanical shutter controls the exposure experienced by the sensor.

Descriptors :   *PATENTS, *SHUTTERS(OPTICS), *LASER SAFETY, *EYE SAFETY, *PROTECTIVE EQUIPMENT, *OPTICAL DETECTORS, DENSITY, DETECTORS, EYE, GOGGLES, HIGH POWER, IMAGES, LASER WEAPONS, LASERS, LIGHT, POWER, PULSES, RISK, VELOCITY, VISION, LASER HAZARDS, LIGHT SOURCES

Subject Categories : Lasers and Masers
      Optics
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE