Multiple element infrared detector

Claim 1

AN INFRARED IMAGING DEVICE COMPRISING A HOUSING, A PLANE INFRARED TRANSPARENT WINDOW FORMING A PORTION OF SAID HOUSING FOR RECEIVING INFRARED RADIATION, A PLATE HAVING A PLURALITY OF TRANSVERSE PARALLELLY ARRANGED BORES POSITIONED ADJACENT TO SAID INFRARED LENS WITHIN SAID HOUSING, SAID PLATE INCLUDING TWO RELATIVELY THICK SECTIONS AND A RELATIVELY THIN POROUS SECTION PROVIDING A GAS LEAKAGE PATH FOR SAID BORES POSITIONED BETWEEN SAID TWO RELATIVELY THICK SECTIONS, FLEXIBLE MEMBRANES FIXED ON OPPOSITE SIDES OF SAID PLATE, THE FLEXIBLE MEMBRANES POSITIONED IN ONE SIDE OF SAID PLATE BEING SENSITIVE TO INFRARED RADIATION PASSING THROUGH SAID LENS, THE MEMBRANES POSITIONED ON THE OTHER SIDE OF SAID PLATE BEING LIGHT REFLECTIVE AND ADAPTED TO BULGE UPON AN INCREASE IN PRESSURE WITHIN SAID BORES AND A PRESSURE TIGHT WINDOW FORMING A PORTION OF SAID HOUSING LOCATED OPPOSITE TO SAID LENS AND ADJACENT TO SAID LIGHT REFLECTIVE MEMBRANE FOR VIEWING SAID LIGHT REFLECTIVE MEMBRANES.