LIGHT-GUIDE STRUCTURE, HOLOGRAPHIC OPTICAL DEVICE AND IMAGING SYSTEM Russian patent published in 2016 - IPC G02F1/25 

FIELD: information technology.

SUBSTANCE: invention relates to a guide structure used for mapping a combination of virtual and background images. Light-guide structure comprises the first part, the second part adjacent to the first one, as well as the first and the second holographic optical elements. First holographic optical element is located on the surface of the first part and is configured to input light beams radiated by an external display device to the first part so that to provide after one full internal reflection inside the first part the light beams propagation through the joint of the first and the second parts to the second part and formation of the first and the second projections of the exit pupil in two planes. First plane passes along the light-guide structure perpendicular to the first and the second parts, and the second plane is perpendicular to the first plane. Second holographic optical element is located on the surface of the second part and is configured to provide after at least one full internal reflection inside the second part the light beams output from the second part and combining the first and the second projections of the exit pupil in one position. First and second parts have different thickness or different refraction indices.

EFFECT: technical result is the increase of the field of view.

28 cl, 21 dwg