Abstract:
A holographic display apparatus capable of steering a location of a viewing window according to a location of an observer is disclosed. The holographic display apparatus includes a light source; a spatial light modulator configured to modulate incident light and thereby reproduce the holographic image; a spatial filter configured to transmit only the holographic image; an eye tracker configured to track a pupil location of an observer; and a controller configured to adjust locations of the light source and the spatial filter in response to a change in the pupil location of the observer received from the eye tracker. The controller is configured to move the light source and the spatial filter simultaneously in the same direction by the same distance.
Abstract:
Provided are head-up display apparatuses and operating methods thereof. The head-up display apparatus simultaneously outputs a plurality of object images on different regions from each other on a screen, generates, by using an optical characteristic, depth information with respect to the object images to sequentially change depth information of at least two of the object images, and converges the object images having depth information and the reality environment into a single region by changing at least one of an optical path of the object images having the depth information and an optical path of the reality environment.
Abstract:
A holographic display apparatus includes: a light source configured to emit light; a spatial light modulator configured to sequentially generate hologram patterns for modulating the light and to sequentially reproduce frames of hologram images based on the hologram patterns; and a controller configured to provide hologram data signals to the spatial light modulator, the hologram data signals being used to sequentially generate the hologram patterns. The controller is configured to further provide, to the spatial light modulator, diffraction pattern data signals for forming periodic diffraction patterns for adjusting locations of the hologram images to be reproduced on a hologram image plane, the diffraction pattern data signals being configured to move the periodic diffraction patterns on the spatial light modulator along a predetermined direction for each of the frames.
Abstract:
A see-through type display apparatus and a method of operating the see-through type display apparatus are provided. The see-through type display apparatus simultaneously outputs a plurality of two-dimensional (2D) images having different depth information onto different regions, produces a multi-layered depth image by sequentially arranging the plurality of 2D images according to the depth information, and causes the multi-layered depth image and a reality environment to converge onto one region.
Abstract:
A beam steering backlight unit provides a hologram image to multiple viewing positions and a holographic display apparatus includes the beam steering backlight unit. The backlight unit includes a light source array comprising a plurality of two-dimensionally arranged light sources and a micro lens array arranged to face the light source array and comprising a plurality of two-dimensionally arranged micro lenses. The light source array includes a plurality of light source blocks each corresponding to a respective one of the plurality of micro lenses, wherein a plurality of the light sources are arranged in each of the plurality of light source blocks. The light source array is configured to select and turn on only those light sources of the plurality of light sources respectively disposed in a same position in each of the plurality of light source blocks and turn off the other light sources.
Abstract:
An apparatus and method for processing a holographic image are disclosed. The apparatus calculates a first calculation result with respect to an image for the left eye and a first calculation result with respect to an image for the right eye and stores the results at different memory addresses of a storage. Thereafter, the apparatus calculates values of a waveform of light to be modulated by a spatial light modulator by performing a second calculation that uses all of the first calculation results stored in the storage. An image window of the image for the left eye and an image window of the image for the right eye are spatially separated from each other by the apparatus in a viewing window of a hologram image reproduced via the spatial light modulator.
Abstract:
A method of performing a Fourier transform includes generating first data by performing a one-dimensional (1D) fast Fourier transform (FFT), on data having rows and columns, in a row direction; generating second data by performing the 1D FFT, on a portion of the first data, in a column direction; and storing a portion of the second data.
Abstract:
Provided are a method and system for generating a three-dimensional (3D) image. The method includes generating a first 3D image having a first binocular depth cue and a first monocular depth cue, and generating, in a first region a second 3D image that has a second binocular depth cue and a second monocular depth cue and is different from the first 3D image, in response to a user command being input which indicates that the first region is selected from the first 3D image, wherein the first and the second 3D images represent a same object.
Abstract:
A spatial light modulator including an electrode having a nano-antenna structure, and a display apparatus including the spatial light modulator are provided. The spatial light modulator includes a refractive index changing layer, and a pixel electrode and a common electrode which are configured to apply an electric field to the refractive index changing layer, and at least one of the pixel electrode and the common electrode include a nano-antenna pattern structure configured to resonate light.
Abstract:
Provided are an electronic device for processing computer-generated holography (CGH) and a method thereof. The electronic device generates a plurality of depth layers (computer-generated holography) having different depth information from image data at a first view point, and reprojects each of the plurality of depth layers based on the user's pose information at the second view point different from the first view point to generates CGH.