SINGLE-PUPIL MULTISPECTRAL OPTICAL SYSTEM WITH BUILT-IN LASER RANGE FINDER (VERSIONS) Russian patent published in 2016 - IPC G02B23/04 F41G3/06 

FIELD: telecommunications.

SUBSTANCE: optical system comprises, in first version, a common inlet channel, a spectrum-dividing plate, reflecting spectral range of television channel and transmitting spectral range of thermal imaging channel, and two optical channels for each of spectral ranges. Optical axis of thermal imaging channel is shifted relative to optical axis of common input channel. Between two components of television channel there is a splitting cube which transmits spectral range of television channel and reflects spectral range of range-finding channel containing collimating optics, a quarter-wave retarder, a polarisation splitter, a y-range-finding channel on radiating and receiving parts, each of which comprises a lens interface. In a second version, spectrum dividing plate reflects spectral range of thermal imaging channel and transmits spectral range of television channel, optical axis of which is displaced relative to optical axis of common input channel.

EFFECT: technical result is alignment of radiating and receiving pupils of laser range-finder with inlet pupil of common channel and high image quality.

3 cl, 3 dwg, 1 tbl