摘要:
An acousto-optic device capable of increasing a range of a diffraction angle of output light by using a nanostructured acousto-optic medium, and an optical scanner, an optical modulator, a two-dimensional/three-dimensional (2D/3D) conversion stereoscopic image display apparatus, and a holographic display apparatus using the acousto-optic device. The acousto-optic device may include a nanostructured acousto-optic medium formed by at least two different mediums repeatedly alternating with each other, wherein at least one of the at least two different mediums includes an acousto-optic medium. The acousto-optic device having the aforementioned structure may increase the range of a diffraction angle of output light. Thus, various systems such as the optical scanner, the optical modulator, the 2D/3D conversion stereoscopic image display apparatus, and the holographic display apparatus may not require a separate optical system to increase an operational angle range, thereby decreasing a size of the system and/or improving a resolution of the system.
摘要:
A nanostructured thin film used in a surface light source, including a dielectric layer, and nanostructures that are arranged periodically in the dielectric layer, wherein light emitted from the nanostructured thin film has directivity according to the nanostrucures.
摘要:
An apparatus includes a recording light source configured to emit recording beams, an electrically addressable spatial light modulator (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 optically addressable spatial light modulator (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.
摘要:
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.
摘要:
Provided are examples of light modulators and optical apparatuses that may include the light modulators. A light modulator may include a plasmonic nano-antenna and an element for changing plasmon resonance characteristics of the plasmonic nano-antenna. The plasmon resonance characteristics of the plasmonic nano-antenna may be changed due to a change in refractive index of the element, and thus light may be modulated.
摘要:
An acousto-optic device includes an acousto-optic medium having a multi-layer nanostructure; and a sonic wave generator configured to apply sonic waves to the acousto-optic medium having the multi-layer nanostructure. The acousto-optic medium having the multi-layer nanostructure includes a second layer formed of at least two materials that have different dielectric constants and alternate with each other; and a first layer disposed on a first surface of the second layer and formed of a first material, and/or a third layer disposed on a second surface of the second layer and formed of a fourth material.
摘要:
Provided are examples of light modulators and optical apparatuses that may include the light modulators. A light modulator may include a plasmonic nano-antenna and an element for changing plasmon resonance characteristics of the plasmonic nano-antenna. The plasmon resonance characteristics of the plasmonic nano-antenna may be changed due to a change in refractive index of the element, and thus light may be modulated.
摘要:
A memory device includes a lower electrode formed on a substrate, and an information storage unit formed on the lower electrode. The information storage unit includes a plurality of information storage layers spaced apart from one another. Each of the plurality of information storage layers is an information unit. A method of manufacturing a memory device uses a porous film to form the plurality of information storage layers.
摘要:
A noise determining apparatus is provided. The noise determining apparatus includes a video determiner which determines type of video according to a pre-set criterion, a noise level determiner which determines a level of noise with reference to output from the video determiner, and a noise determiner which determines presence or absence of noise with reference to output from the noise level determiner. Accordingly, incorrect discrimination between a texture area of low level which is similar to noise and noise having a great level difference with respect to neighboring pixels is reduced.
摘要:
Disclosed are an apparatus and method for converting video contents, each of which converts 2D contents into 3D contents. The method includes: determining an object to be extracted from a plurality of frames which contain 2D contents; determining a respective possession degree of information about the object to be extracted, with regard to each of the plurality of frames; selecting at least one key frame from among the plurality of frames in accordance with the determined possession degrees of information about the object to be extracted; extracting an object with regard to the selected key frame; assigning depth for conversion into 3D contents to the object to be extracted; and performing tracking upon all but the key frame from among the plurality of frames. Accordingly, the 2D-3D conversion can be performed with high accuracy and reliability.