CCD sighting piece system of prepositive sight scale in continuous zoom

To aim at domestic CCD sighting piece of gun tower of the telecontrol armament station is incapable of taking aim at all field of vision at the whole focus range,a CCD sighting piece of prepositive sight leaf graduation optics system in continuous zoom is designed,which differs from the common zoom system.This system moves in compensating linearity,zoom group moves in cam curve to ensure the imaging plane to level off.Zoom proportion is 5∶1.It can zoom continuously in the length focus range.It also achives in taking aim at all field of vision at the whole focous range,the accuracy of take aim at is to stabilize dependable.The field curvature is emended by locale lense,the quality of the image is nice.To apply theory of dynamic optics,it indicates the moving curve resolution type of the zoom group versus the compensating group.The structure is compact,zoom distance is short and zoom track is smoothness,The image plane is tranquilization.