Abstract: A sample container comprises a first container and a second container enclosing the first container, the containers capable of being brought into a storage position to form a collecting chamber therebetween having a first, smaller volume, and into an analysis position, in which the collecting chamber has a second, larger volume, wherein a fixing means is provided on the first container, which can be brought into fixing engagement with a mating fixing means provided on the second container such that relative motion of the containers is made more difficult in at least one relative motion direction and/or wherein a locking means is provided on the first container, which locking means can be brought into locking engagement with a mating locking means provided on the second container such that relative motion of the two containers is made more difficult in at least one relative motion direction.

Abstract: A device for correcting the faults of a sequence of images analyzed by an integrating matrix infrared sensor has a first part that determines a correction signal that is variable as a function of the temperature of the background of the images, equal to the product of a value representing the mean luminance of an image preceding the image undergoing correction, and a signal representing approximately the sensitivity of each cell of the sensor, constituted by the values of a video signal corresponding to an image analyzed in the course of a pre-calibration period; and a second part to determine a second correction signal, in storing the values of the first corrected video signal during a calibration period. An application of this device could be for the infrared cameras used in weapons systems.