DEVICE OF OPTICAL POLARIZATION FOR THE STEREOSCOPIC IMAGE PROJECTOR Russian patent published in 2018 - IPC G02B27/26 

FIELD: image processing.

SUBSTANCE: invention relates to optical polarization devices for viewing stereo images. Device comprises the optical polarizing element (304), which is designed with the possibility to dissection the falling light beam (22), which is emitted by the stereoscopic image projector to the transmitted light beam (306) having the first optical polarization state, and the first (308) and the second (310) reflected light beams having the second optical polarization state, which is different from the first optical polarization state. Optical polarizing element (304) comprises two mated plates (322, 324) of the separator-polarizer beams, where the joint (326) between the mentioned plates is formed by abutting the flat edges of the mentioned plates. Also, the device contains the first (312) and second (314) optical reflectors, which are designed with the possibility to change respectively the trajectories of the first and second reflected light beams in such a way that these reflected and transmitted light beams are projected to form a single stereoscopic image; the first (316), second (318) and third (320) polarization modulators, which are designed with the possibility to selectively switch the optical polarization of the transmitted light beam, the first and second reflected light beams between the first and the second optical polarization states in response to the command signal; and of the polarization modulator control circuit (31) for switching the polarization of the transmitted light beam and each of the reflected first and second beams in such a way that the mentioned reflected and transmitted light beams have the same polarization state.

EFFECT: invention allows to improve image quality while maintaining high brightness.

20 cl, 14 dwg