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

FIELD: physics.

SUBSTANCE: device includes first optic part 1, second optic part 2, third optic part 3 and deviating element 4. During operation of projection system third optic part 3 shapes light beam from emission 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 9 of third optic part 3 forms 0° to 90° angle with optic axis 8 of second optic part 2, while optic axis 8 of second optic part 2 forms an angle with optic axis 7 of first optic part 1.

EFFECT: extended application sphere and enhanced efficiency of device.

8 cl, 3 dwg