Abstract: An optical system includes a picture generation unit (PGU), a correcting optical unit configured to create, in a direction of a horizontal field of view (HFoV), a monotonic variation of an optical path length of light rays propagating from the PGU, and a combiner configured to redirect light rays propagating from the correcting optical unit toward an eye box, producing one or more virtual images observable from the eye box. The optical system provides a virtual image surface inclined in the direction of the HFoV for displaying the virtual images. The virtual image surface has a non-zero angle between projections on a horizontal plane defined by a first axis perpendicular to the virtual image surface and extending through an arbitrary intersection point on the virtual image surface, and a second axis parallel to a line of sight and extending from the eye box through the intersection point.

Abstract: An optical system includes a picture generation unit configured to output an optical image, a correcting optical element, and a combiner. The shape of the combiner and the shape of the correcting optical element are correlated such that the optical system can produce augmented reality at relatively long distances (e.g., 1.5 meters or more). The correcting optical element includes a convex reflective surface configured to reflect the optical image output by the picture generation unit. The combiner has a concave reflective surface and a convex transparent surface. The concave reflective surface of the combiner is configured to reflect the optical image reflected by the correcting optical element toward an eye box, which represents an eye pupil of the observer. The convex transparent surface of the combiner is configured to permit external light to pass through the combiner and combine with the optical image reflected by the correcting optical element.

Abstract: Indication systems for the drivers of vehicles and cars include a data display device that combines two optical systems of the image display—the virtual image display system and the real image display system. The display device may be configured to provide a maximum of displayed information and to ensure safe driving, by controlling the level of details and the content of the data displayed for the vehicle driver, depending on the speed, and by choosing the optical system of data display to minimize the accident risk. Image quality and safe driving may be improved due to the combination of two systems and control of the level of detail of displayed data.

Abstract: Indication systems for the drivers of vehicles and cars include a data display device that combines two optical systems of the image display—the virtual image display system and the real image display system. The display device may be configured to provide a maximum of displayed information and to ensure safe driving, by controlling the level of details and the content of the data displayed for the vehicle driver, depending on the speed, and by choosing the optical system of data display to minimize the accident risk. Image quality and safe driving may be improved due to the combination of two systems and control of the level of detail of displayed data.