INVESTIGATIONS ON INFRARED CHALCOGENIDE GLASSES USED IN NIGHT VISION DEVICES

摘要

The modern night vision technology uses the advantages of both the image intensifiers technology and infrared sensors technology, namely a clear image, very good resolution, very good target identification probability - for image intensification and ability to see, practically, under any environmental condition s - for infrared sensors. Chalcogenides may represent an alternative for night vision systems objectives because high transmission quality is guaranteed across a wide range of the infrared spectrum images and offer images with nearly similar quality with that given by classical optical glass materials which are operating in the infrared spectrum. The paper presents how the Ge 30 As 13 Se 32 Te 25 influences the image quality when it is used as a combination of lenses.