OPTIC PROJECTION SYSTEM Russian patent published in 2008 - IPC G03B21/00 

FIELD: physics.

SUBSTANCE: system includes first optic part 1, second optic part 2, third optic part 3 and deviating element 4. Operating third optic part 3 shapes light beam from source 5 and directs it to deviating element 4, which directs light beam formed by third optic part 3 to second optic part 2. Light passes through second optical part 2 in one direction and is reflected from micromirror element 6, thus forming image structure, then passes second optic part 2 in reverse direction and reaches entry of first optic part 1 which projects light on screen. Entrance pupil surface of second optic part is positioned between first and second optic parts. Each optic part has optic axis, and optic axis of third optic part forms 0° to 90° angle with optic axis of second optic part, while optic axes of first and second optic parts are parallel and distanced from each other.

EFFECT: extended application sphere and enhanced efficiency of device.

8 cl, 3 dwg