IN ORDER TO DECREASE THE VULNERABILITY OF THE EYE TO INTENSE RADIATION, PSI HAS DEVELOPED A PROPRIETARY TECHNIQUE CALLED PAPOOSE, WHICH HAS A LARGE INSERTION LOSS FOR RADIATION AT LEVELS THAT WOULD PRODUCE EYE DAMAGE AND VIRTUALLY NO LOSS FOR LOW LEVELS

IN ORDER TO DECREASE THE VULNERABILITY OF THE EYE TO INTENSE RADIATION, PSI HAS DEVELOPED A PROPRIETARY TECHNIQUE CALLED PAPOOSE, WHICH HAS A LARGE INSERTION LOSS FOR RADIATION AT LEVELS THAT WOULD PRODUCE EYE DAMAGE AND VIRTUALLY NO LOSS FOR LOW LEVELS OF LIGHT NEEDED FOR VIEWING. THIS IS POSSIBLE BECAUSE THE PAPOOSE USES A PASSIVE MEANS TO ATTENUATE THE INCIDENT RADIATION WHICH IS PROPORTIONAL TO THE SQUARE OF THE INCIDENT PEAK POWER IN A TRANSPARENT MEDIUM. IN ADDITION, THE PAPOOSE PROVIDES ESSENTIALLY DISTORTION FREE VIEWING WHICH IS LIMITED PREDOMINANTLY BY THE QUALITY OF THE INPUT AND OUTPUT OPTICS. THE PAPOOSE REQUIRES NO POWER SINCE IT IS TOTALLY PASSIVE ANDIT HAS EXTREMELY FAST RISE AND FALL TIMES. OTHER FEATURES INCLUDE A LARGE ACCEPTANCE ANGLE, VIRTUALLY UNLIMITED APERTURE SIZE AND A FAST RECOVERY TIME FROM INTENSE INCIDENT RADIATION. A FULLY DEVELOPED PAPOOSE CAN BE EXPECTED TO BE COMPACT, LIGHTWEIGHT AND INEXPENSIVE, AS WELL AS RELIABLE AND EASILY MAINTAINABLE.