Abstract: A method and apparatus for displaying three dimensional (3D) images are provided. The display apparatus includes a backlight unit which emits light, an image panel which includes plurality of pixels for modulating the light from the backlight unit to form a gray scaled image, an electrowetting lens unit which includes first electrowetting lenses arranged to correspond to the plurality of pixels in the image panel and second electrowetting lenses arranged opposite to the first electrowetting lenses, wherein at least two of the first electrowetting lenses and at least one of the second electrowetting lenses may be arranged opposite each other; and a controller which controls the electrowetting lens unit to separate beams exiting from the image panel into at least two viewing zones in a 3D image display mode.

Abstract: A backlight unit of a three-dimensional (3D) display has a plurality of cells and a 3D image is formed by adjusting directions of light emitted from the cells. The backlight unit includes an emission unit that adjusts an emission direction of light from a cell with respect to other cells. The backlight unit divides view areas to provide left-eye and right-eye images, thereby generating a 3D image.

Abstract: A surface light source device is provided. The surface light source device includes a light source, a beam splitter configured to split a light irradiated from the light source into a plurality of light beams each having a different path, a diffusion unit configured to diffuse the plurality of light beams split by the beam splitter into a surface light, and a collimating unit configured to arrange the plurality of light beams diffused from the diffusion unit in one direction.

Abstract: A light refraction controlling panel, a 3D-display, and a method of operating a 3D-display are provided. The light refraction controlling panel includes a transparent substrate, a barrier wall on the transparent substrate, first to fourth electrodes on the barrier wall, the first to fourth electrodes being separated from each other, an electro-wetting prism within the barrier wall, the electro-wetting prism being configured to refract incident light to a desired direction, and an isolation layer between the barrier wall and the first to fourth electrodes, and the electro-wetting prism. One electrode of two adjacent electrodes of the first to fourth electrodes is inside an other electrode of the two adjacent electrodes.

Abstract: A changeable liquid prism array and a method of manufacturing the changeable liquid prism array are provided. The changeable liquid prism array includes a substrate, a wiring layer formed on the substrate, and including conducting wire portions and non-conducting wire portions where the conducting wire portions are not formed, and barrier walls disposed on the wiring layer. The changeable liquid prism array further includes cells defined by the barrier walls, a first liquid included in the cells, and a second liquid located on the first liquid. The changeable liquid prism array further includes side electrodes disposed on side surfaces of the barrier walls, and separated from each other by spaces corresponding to the non-conducting wire portions, and an upper electrode arranged above the barrier walls, and separated from the side electrodes.

Abstract: A 3D image display apparatus and a 3D image display method are provided. The 3D image display apparatus generates a 2D image region and a 3D image region, forms shutter patterns for the 3D and 2D image regions, and adjusts a light emitting direction according to the shutter patterns. Accordingly, the 2D and 3D images may be selectively displayed on one screen.

Abstract: Provided are an electrowetting prism device which has increased an aperture ratio by simplifying an electrode and wiring structure, and a 3D image display apparatus capable of providing a super multi-view 3D image using the electrowetting prism device. The electrowetting prism device includes lower and upper transparent substrates disposed against each other, a vertical wall mounted on the lower transparent substrate so as to form a diamond-shaped space, a first electrode arranged along two adjacent sidewalls of the vertical wall, a second electrode arranged along the other remaining two adjacent sidewalls of the vertical wall to be disposed against the first electrode, and a non-polarized liquid and a polarized liquid arranged within a space surrounded by the vertical wall.

Abstract: In one embodiment, the electrowetting device includes a first medium; a second medium that is not mixed with the first medium and has a refractive index different from a refractive index of the first medium; an upper electrode that adjusts an angle of a boundary surface between the first medium and the second medium; and a barrier wall that has a side surface surrounding the first and second mediums, allows the upper electrode to be disposed on a portion of the side surface, and has irregular widths.

Abstract: A multi-view point 3D display apparatus using an active optical device is provided. The active optical device may change a path of light without a substantial drop of image resolution.

Abstract: Provided is a technology for controlling an electrowetting cell. The electrowetting cell may be controlled by applying a preset first voltage to the electrowetting cell, measuring a first circuit parameter between any one side surface and a conductive liquid disposed in the electrowetting cell and determining whether a reset second voltage is to be applied to the electrowetting cell based on the measured first circuit parameter.

Abstract: A three-dimensional (3D) image display apparatus that includes a surface-light source device for emitting light in a direction which may be sequentially adjusted, is provided. The 3D image display apparatus includes a display panel for generating images by modulating the light emitted from the surface-light source device according to image information. The 3D image display apparatus also includes a controller for controlling the directivity adjustment of the light from the surface-light source device in a time-sequential manner and the image formation for each visual field of the display panel to be synchronized with each other.

Abstract: A 3D image display apparatus is provided. The 3D image display apparatus includes a light emission unit including one or more cells, the cells being configured to respectively adjust a direction in which light is emitted, an active prism array on the light emission unit, the active prism array including one or more prism units corresponding to the cells, the active prism array being configured to adjust an inclination of a refracting surface of each of the prism units according to an electric signal to change an optical path, and a display panel configured to modulate light that passes through the active prism array according to an image signal to form an image.

Abstract: A variable optical device array includes: a transparent substrate; an addressing layer including an electrode wire arranged on the transparent substrate; a barrier wall portion disposed on the addressing layer to define cell regions and including conductive barrier walls that are electrically connected to the electrode wire, wherein pairs of the conductive barrier walls are arranged to form double walls; an insulation material filling a region between each pair of conductive barrier walls; a conductive first fluid and a nonconductive second fluid disposed in each of the cell regions, wherein the first and second fluids are not mixed; an insulation coating layer disposed on a top surface of each of the conductive barrier walls and on side surfaces of each of the cell regions; a transparent electrode layer covering the cell regions; and a voltage applying unit to apply a voltage between the transparent electrode layer and the addressing layer.

Abstract: An apparatus includes a recording light source configured to emit recording beams, an EASLM configured to time sequentially modulate the recording beams emitted from the recording light source according to hologram information corresponding to a 3-dimensional image spatially divided into a plurality of portions, an OASLM configured to include a plurality of regions corresponding to the plurality of the divided portions of the 3-dimensional image and images on a region corresponding to the portions using the modulated recording beams to form a hologram, a scanning optical unit configured to reproduce the hologram formed by the recording beams serially modulated by the EASLM on a reduced scale and transmit the hologram to the regions of the OASLM corresponding to the portions, and a reproducing light source configured to produce a surface light and emit the surface light to the OASLM.

Abstract: An apparatus for displaying a 3-dimensional (3D) image, which is capable of providing a super multi-view, is provided. The apparatus includes: at least one image projector for projecting light including an image; an active optical element for adjusting a path of at least one light within a range of a predetermined angle; and a relay optical system for transmitting the at least one light to a pupil of a viewer. The apparatus provides a plurality of images in different views to the pupil using a time division method, by using the active optical element for adjusting the path of the at least one light.

Abstract: A surface light source device is provided. The surface light source device includes a light source, a beam splitter configured to split a light irradiated from the light source into a plurality of light beams each having a different path, a diffusion unit configured to diffuse the plurality of light beams split by the beam splitter into a surface light, and a collimating unit configured to arrange the plurality of light beams diffused from the diffusion unit in one direction.

Abstract: Disclosed is a hybrid type air-compressor, which has a main body including a cylinder having upper and lower portions, a motor assembly including an eccentric shaft passing through a side surface of the main body to eccentrically rotate in the cylinder, a first communication part covering an upper portion of the cylinder of the main body and introducing air to discharge the air to the upper portion of the cylinder, a second communication part covering a lower portion of the cylinder of the main body and introducing air to discharge the air to the lower portion of the cylinder; and an air compressing means connected to the eccentric shaft of the motor assembly and vertically moving in the cylinder to alternately compress air introduced into the upper and lower portions of the cylinder.

Abstract: The oxygen delivery apparatus comprises: an oxygen tank; an outlet valve unit configured to include a variable flow valve capable of variably controlling the amount of oxygen, a pressure sensor, and a control unit controlling the operation of the outlet valve unit on the basis of a signal from the pressure sensor in order to control the amount of oxygen delivered to a recipient. The control unit controls the outlet valve unit on the basis of the pressure signal and an oxygen delivery mode selected from among a plurality of preset oxygen delivery modes, receives a prescribed flow (that is a prescribed oxygen delivery flow) and a target average consumed flow, selects one of the plurality of oxygen delivery modes according to the size of a obtained saving ratio obtained as ratio of the input prescribed flow and the target average consumed flow, and controls the delivery of oxygen on the basis of the selected mode.

Abstract: A surface light source device is provided. The surface light source device includes a light source, a beam splitter configured to split a light irradiated from the light source into a plurality of light beams each having a different path, a diffusion unit configured to diffuse the plurality of light beams split by the beam splitter into a surface light, and a collimating unit configured to arrange the plurality of light beams diffused from the diffusion unit in one direction.

Abstract: A backlight unit and a display device including the backlight unit are provided. The backlight unit includes at least one light source unit and a light guide plate. The light source unit provides collimated light and controls light such that it is emitted in a plurality of light exit directions.