Lg Electronics Inc.

Kwangwoon University Industry-Academic Collaboration Foundation

Seungcheol Kim

Sungchul Shin

Eunsoo Kim

Bolam Kim

A spatial image projection apparatus including a receiver configured to receive an image signal; a display unit configured to display an image acquired by processing the image signal; a projection unit configured to project a spatial image to a prescribed space by reflecting light corresponding to the image displayed on the display unit. Further, the projection unit includes a plate having a first surface facing the display unit and a second surface opposite to the first surface; and a protrusion arranged on the first surface or the second surface of the plate. In addition, the protrusion includes first and second slopes tilted at about 45 degrees relative to the surface of the plate, and an angle between the first and second slopes is about 90 degrees.

Spatial image projection apparatus

A spatial image projection apparatus including a receiver configured to receive an image signal; a display unit configured to display an image acquired by processing the image signal; a projection unit configured to project a spatial image to a prescribed space by transmitting or reflecting light corresponding to the image displayed on the display unit; and an optical-path length-converter located between the display unit and the projection unit so as to change an optical-path length of the image. Further, the optical-path length-converter includes a polarizer configured to transmit only specific polarized light, among the light introduced from the display unit, toward the projection unit, and to reflect the remaining light other than the specific polarized light; and a mirror configured to transmit light, introduced from the display unit, to the polarizer, and to convert the light reflected from the polarizer into specific polarized light so as to again reflect the light to the polarizer.

An apparatus for projecting a spatial image in which the spatial image with a background is projected into a space through a projection unit is discussed. The apparatus according to an embodiment includes a receiving unit to receive a spatial image and a background image, a display unit to display the spatial image and the background image and to project light, a control unit to control the display unit to display the spatial image and the background image, and a spatial image projection unit to project the spatial image and the background image by transmitting or reflecting the light. Thus, a spatial image may be viewed from every direction, and the spatial image may be projected to different positions according to images and a background image may be displayed at the same time. In addition, a user may perform interaction such as reaching of hands into the projected image.

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Seoul, South Korea

Seungcheol Kim