TWO-CHANNEL OPTOELECTRONIC SYSTEM Russian patent published in 2021 - IPC G02B17/08 G02B23/04 

FIELD: instrument engineering.

SUBSTANCE: optoelectronic system can be used in digital sight-seeing devices in day and night conditions. Lens of the first channel comprises a main spherical concave mirror with central screening, in the focal plane of which there is a thermal imaging photodetector. Second channel is installed before the first one and contains a television lens containing four components, the first and the third of which are biconvex lenses, the second one is a biconcave lens, the fourth one is a negative convex-concave lens, and the aperture diaphragm is located before the first surface of the first component of the television lens. Aperture diaphragm of the first channel is located before the main spherical concave mirror, and the following ratio is fulfilled: 0.1∙F₁≤d≤2.5∙F₁, where d is the distance between the main spherical concave mirror and the aperture diaphragm of the first channel; F₁ is focal distance of main spherical concave mirror of first channel.

EFFECT: working spectrum expansion to range (8÷14) mcm, as well as simplification of optical channels paths with preservation of acceptable image quality.

1 cl, 3 dwg, 4 tbl