Abstract: It is provided that a lightguide structure comprising: a first portion disposed to receive light rays emitted by an external display, a second portion disposed to provide, to a second surface facing a viewer, the light rays from the first portion and ambient light, wherein the second portion has a plurality of first surfaces for reflecting light rays and at least one second surface which the light rays and the ambient light perpendicularly enter into and pass through, an intermediate portion disposed to connect between the first portion and the second portion and reflect the light rays from the first portion for transferring the light rays to the second portion.

Abstract: A holographic see-through optical device, a stereoscopic imaging system including the same, and a multimedia head mounted system are provided. The holographic see-through optical device includes a micro display; a relay optical system, which relays an image generated by the micro display; at least one waveguide comprising at least two portions having different thicknesses or different refractive indexes; at least one first holographic optical element, which is arranged at one of the two portions; and at least one second holographic optical element, which is arranged at the other one of the two portions.

Abstract: A head mounted display includes: a display configured to display an image; a shutter configured to block light incident on an eye; a controller configured to control the display to display a left eye image and a right eye image using half or more of a region of the display in a horizontal direction and to control the shutter based on the image displayed on the display; and a lens configured to focus light output from the display such that the left eye image and the right eye image displayed on the display are viewed by a left eye and a right eye respectively.

Abstract: A holographic see-through optical device, a stereoscopic imaging system including the same, and a multimedia head mounted system are provided. The holographic see-through optical device includes a micro display; a relay optical system, which relays an image generated by the micro display; at least one waveguide comprising at least two portions having different thicknesses or different refractive indexes; at least one first holographic optical element, which is arranged at one of the two portions; and at least one second holographic optical element, which is arranged at the other one of the two portions.

Abstract: It is provided that a lightguide structure comprising: a first portion disposed to receive light rays emitted by an external display, a second portion disposed to provide, to a second surface facing a viewer, the light rays from the first portion and ambient light, wherein the second portion has a plurality of first surfaces for reflecting light rays and at least one second surface which the light rays and the ambient light perpendicularly enter into and pass through, an intermediate portion disposed to connect between the first portion and the second portion and reflect the light rays from the first portion for transferring the light rays to the second portion.