PANCRATIC SYSTEM Russian patent published in 2011 - IPC G02B15/02 G02B15/14 

FIELD: physics.

SUBSTANCE: pancratic system has an afocal system with variable angular magnification and an optical unit. The afocal system is configured to work in forward and reverse beam paths and has on an optical axis in the forward beam path a first group of lenses and a second group of lenses configured to move along the optical axis. The optical unit has a third group of lenses and a sensor. The optical unit is configured to move in two positions. In the first position, the optical unit lies on the side of the second group of lenses of the afocal system and radiation falls into the afocal system on the side of the first group of lenses, passes through the afocal system in the forward beam path and falls into the optical unit. In the second position, the optical unit lies on the side of the first group of lenses of the afocal system and radiation falls into the afocal system on the side of the second group of lenses, passes through the afocal system in the reverse beam path and falls into the optical unit.

EFFECT: design of a compact pancratic system with high zoom ratio and low aberration.

4 cl, 1 dwg