Military projector with relatively movable negative and positive lenses

A military projector comprising:

• a tubular housing that contains a high intensity lamp,
• a reflecting mirror behind the high intensity lamp,
• a negative lens which is carried in a first mounting member located in front of the lamp,
• a pair of positive meniscus lenses which are mounted in a second mounting member spaced from the negative lens, and
• a filter carrier adapted to carry an infra-red filter, the filter carrier being pivoted to the second mounting member so as to pivot about a pivot between an operative position in which the filter is in the path of rays passing through the meniscus lenses and an inoperative position outside said path and by a moving means provided to move the filter carrier from the operative to the inoperative position and vice versa;
• wherein the second mounting member is movable relative to the first mounting member so that the distance between the negative lens and the positive meniscus lenses can be varied.