TWO-CHANNEL DAY AND NIGHT VIEWING DEVICE Russian patent published in 2000 - IPC

FIELD: optical instrument engineering. SUBSTANCE: the device has a body, objective lens and an eye-piece that are common for the day and channels, optoelectronic image converter relevant to the night channel, erecting system, movable and fixed parts of the light beam deflecting system relevant to the day channel. The movable part of the light beam deflecting system is made in the form of two deflectors of optical beams secured on the ends of a rotary fork each. The rotary fork is installed in the body with its base on an axle parallel to the sighting axis of the optoelectronic image converter and connected to the channel selector. The deflectors may be made in the form of plane mirrors secured on the ends of the rotary fork perpendicularly to each other and at an angle of 45 deg. relative to the axis of rotation of the fork. The channel selector is made in the form of a drum installed in the body coaxially with the rotary fork. EFFECT: reduced overall dimensions and mass, aligned sighting axes of the channels and enhanced light transmission of them. 4 cl, 2 dwg