DOUBLE-CHANNEL CATADIOPTRIC OPTICAL SYSTEM (VERSIONS) Russian patent published in 2009 - IPC G02B13/14 

FIELD: physics.

SUBSTANCE: invention can be used in systems for tracking and controlling flight of objects radiating in the visible and infrared spectrum. The system contains a long-focus catadioptric lens made from three components. In the cut off zone of the first component there is a fourth lens component. The third and fourth components form a short-focus object lens, the image plane of which coincides with the image plane of the long-focus catadioptric lens. The first channel is a control channel with spectral range 600…1000 nm. The second channel is a reception distance measuring channel with spectral range 1530…1570 nm. Both channels include the first, second and third components of the catadioptric lens and a spectrum-dividing component, placed between the third component and a matrix "Photo-transforming Device". There is an adjustable circular opaque diaphragm between the first and second components and an opaque screen in front of the fourth lens component on the object side with possibility of moving in an and out from the light zone of the short-focus object lens.

EFFECT: increased noise immunity, detection capacity, speed of operation and reliability with simultaneous reduction of its size.

17 cl, 6 dwg