Abstract: Provided are a high output light guide panel and a backlight unit employing the same. The light guide panel includes a first layer having an incident surface on which light emitted from a light source is incident, a surface opposite the incident surface, and an upper surface through which the light exists. A second layer is disposed on the first layer and includes a continuous and periodic array of exit units and planar portions formed between the exit units, each exit unit having a first prism and a second prism which is equal to or larger than the first prism. A third layer is formed of an anisotropic material and is disposed on the second layer.

Abstract: A display device that can selectively display 2D and 3D images is provided. The display device includes a backlight unit, a liquid crystal device, and a light control device including two polarizing plates interposed between the backlight and the liquid crystal device each of the polarizing plates having a polarized pattern, and one of the polarizing plates being moveable. Therefore, the display device can selectively display 2D and 3D images by moving one of the polarizing plates parallel to the other polarizing plate, and a width of a light valve can be controlled by the degree of non-alignment of the polarizing plates.

Abstract: A light guide panel (LGP), a backlight unit, and a display using the LGP are provided. The LGP includes: a first layer having an incident surface on which light emitted from a light source is incident, a surface opposite to the incident surface, and a top surface through which light exits; a second layer disposed on the first layer and including a periodic array of exit units, each exit unit having a concave portion and a convex prism; and a third layer of an anisotropic material disposed on the second layer, wherein light having a first polarization that is transmitted through the concave portion is totally reflected by the prism and is transmitted upward through the third layer, while light having a second polarization is totally reflected at a top surface of the third layer.

Abstract: A polarized light emitting light guide plate includes: a transparent substrate of optically isotropic material, in which the light incident through a lateral side thereof travels; an anisotropic liquid crystal polymer layer formed on an upper surface of the substrate and having first and second refractive indices with respect to first and second perpendicular polarization components; and a polarization separation microstructure formed at an interface between the transparent substrate and the liquid crystal polymer layer, which refracts or reflects the first polarization component and transmits the second polarization component. The refractive index of the polarization separation microstructure is substantially equal to the refractive index of the substrate; the first refractive index of the liquid crystal polymer layer is greater than the refractive index of the substrate, and the second refractive index of the liquid crystal polymer layer light is substantially equal to the refractive index of the substrate.

Abstract: A display device that can selectively display 2D and 3D images is provided. The display device includes a backlight unit, a liquid crystal device, and a light control device including two polarizing plates interposed between the backlight and the liquid crystal device each of the polarizing plates having a polarized pattern, and one of the polarizing plates being moveable. Therefore, the display device can selectively display 2D and 3D images by moving one of the polarizing plates parallel to the other polarizing plate, and a width of a light valve can be controlled by the degree of non-alignment of the polarizing plates.

Abstract: Provided is a mode converter for use in optical communication. The mode converter includes a first waveguide, a second waveguide optically coupled into the first waveguide, and omnidirectional reflectors that are disposed on either side of the first waveguide and have forward reflectivity with respect to a mode propagating in the first waveguide. The mode converter provides minimum loss coupling between either optical fiber or low index difference waveguide and a high index contrast waveguide. Furthermore, the mode converter achieves high, bi-directional optical coupling over a wide wavelength range with a simple manufacturing process.

Abstract: An optical device integrally including an optical waveguide and an optical detector, and a method of manufacturing the same. The optical device includes: a substrate; a first single crystalline growth layer grown on the substrate; an optical waveguide provided with a clad layer and a core layer formed on the first single crystalline growth layer; a second single crystalline growth layer grown on a predetermined portion of a core layer at which the clad layer is removed, for absorbing light having a wavelength within a predetermined band and traveling in the optical waveguide.

Abstract: A light guide panel and a back light unit having the same are provided. The light guide panel includes an isotropic layer and an anisotropic layer. The isotropic layer includes an incident light surface, a transmission surface, and a polarization recycling unit, disposed opposite the transmission surface, which changes a polarization direction of light. The isotropic layer has a first refractive index. The anisotropic layer is formed on the transmission surface and includes a selectively transmitting and reflecting surface opposite the transmission surface, which reflects a first portion of incident light and transmits a second portion of incident light. The anisotropic layer has a first refractive index, identical to the first refractive index of the isotropic layer, with respect to light having a first polarization and has a second refractive index, different from the first refractive index with respect to light having a second polarization.

Abstract: An illuminator for a flat panel display device is provided. The illuminator includes a light source generating light; a light guide plate that guides and distributes the light generated by the light source and is made of optically isotropic material; a collimator that is disposed between an end of the light guide plate and the light source and guides the light from the light source onto the light guide plate with a predetermined incident angle; a polarization separation layer that is made of optically anisotropic material having two refractive indices and formed on the light guide plate to transmit first polarized light from the light guide plate and reflect second polarized light from the light guide plate; and a beam out-coupling layer that is formed on the polarization separation layer and out-couples the light incident from the polarization separation layer.

Abstract: An illumination system for a flat panel display device includes: a light guide plate made of an optically isotropic material; a light source disposed at a side of the light guide plate; an upper layer disposed on a top surface of the light guide plate and made of an optically anisotropic material; and a polarization selection emitting structure which is disposed at an interface of the light guide plate and the upper layer. The upper layer has two different refractive indices and one of the two refractive indices is the same as a refractive index of the light guide plate. In the polarization selection emitting structure differently polarized light is differently refracted, reflected, diffracted, or scattered based on polarization direction.

Abstract: A polarization converting system and a method of manufacturing the same are provided. The polarization converting system includes a polarization splitting unit splitting incident unpolarized light into two orthogonal polarizations and a polarization converting unit converting incident light into specific polarized light. The polarization converting unit has first and second regions that correspond to the polarization splitting unit and are different in a polarization converting extent from each other.

Abstract: A waveguide including transmission areas which transmit an input optical signal. A coupling area is provided between the transmission areas and has a width narrower than a width of the transmission areas so that at least part of the optical signal transmitted through the transmission areas is branched to a neighboring optical member.

Abstract: An image stabilizer of a camera is provided that can compensate for the effects of the shaking of a main body that includes a lens, in real-time, by using an optical element. The image stabilizer includes: an optical element that can be tilted, which is installed on an optical path, which transmits light and which tilts to shift the transmitted light to compensate for the optical path; a sensor provided near the main body, which senses the shaking of the main body; a calculating unit which receives a sensing signal from the sensor and calculates the necessary tilt angle of the optical element; and an actuator which drives the optical element according to the result output from the calculating unit. The image stabilizer can sense the shaking of the main body in real-time and prevent shifting of the image formed on an image forming surface.

Abstract: A CMOS image sensor for improving light sensitivity and peripheral brightness ratio, and a method for fabricating the same. The CMOS image sensor includes a substrate on which a light sensor and device isolating insulation films are formed, in which the top of the substrate is coated with a plurality of metal layers and oxide films; a plurality of reflective layers formed inside the metal layers, each being spaced apart; a color filter embedded in a groove formed by etching the oxide films inside the reflective layers by a predetermined thickness; a plurality of protrusions formed on both sides of the top of the color filter, each arranged at a predetermined distance from one another; a flat layer formed on the top of the protrusions and the oxide films; and a micro-lens formed on the top of the flat layer. The reflective layer disposed at the top of the photodiode is made of a material having a high reflectance and low absorptivity.

Abstract: A silicon optoelectronic device and a light-emitting apparatus using the silicon optoelectronic device are provided. The silicon optoelectronic device includes: a substrate based on an n-type or p-type silicon; a doped region formed on one surface of the substrate and doped to an ultra-shallow depth with a predetermined dopant to be an opposite type from that of the substrate to provide a photoelectrical conversion effect by quantum confinement in a p-n junction between the doped region and the substrate; and first and second electrodes formed on the substrate to be electrically connected to the doped region. The silicon optoelectronic device may further include a control layer formed on one surface of the substrate to act as a mask in forming the doped region and to limit the depth of the doped region to be ultra-shallow. The silicon optoelectronic device has excellent efficiency and can be used as either a light-emitting device or a light-receiving device.

Abstract: An optical device integrally including an optical waveguide and an optical detector, and a method of manufacturing the same. The optical device includes: a substrate; a first single crystalline growth layer grown on the substrate; an optical waveguide provided with a clad layer and a core layer formed on the first single crystalline growth layer; a second single crystalline growth layer grown on a predetermined portion of a core layer at which the clad layer is removed, for absorbing light having a wavelength within a predetermined band and traveling in the optical waveguide.

Abstract: A 2D/3D (two-dimensional/three-dimensional) display including: an image display panel; and a light source which selectively emits light for displaying two-dimensional image and light for displaying three-dimensional image on the image display panel. The image display panel can be a liquid crystal panel, and the light source can be a flat light source having an array of light emitting cells which are turned on and off depending on an applied voltage.

Abstract: Provided is a mode converter for use in optical communication. The mode converter includes a first waveguide, a second waveguide optically coupled into the first waveguide, and omnidirectional reflectors that are disposed on either side of the first waveguide and have forward reflectivity with respect to a mode propagating in the first waveguide. The mode converter provides minimum loss coupling between either optical fiber or low index difference waveguide and a high index contrast waveguide. Furthermore, the mode converter achieves high, bi-directional optical coupling over a wide wavelength range with a simple manufacturing process.

Abstract: A display device that can selectively display 2D and 3D images is provided. The display device includes a backlight unit, a liquid crystal device, and a light control device including two polarizing plates interposed between the backlight and the liquid crystal device each of the polarizing plates having a polarized pattern, and one of the polarizing plates being moveable. Therefore, the display device can selectively display 2D and 3D images by moving one of the polarizing plates parallel to the other polarizing plate, and a width of a light valve can be controlled by the degree of non-alignment of the polarizing plates.

Abstract: Provided is a DNA chip having a multi-layer structure of thin films. The DNA chip comprises: a substrate; a high reflection region, having a higher refractive index than that of the substrate and including a thin film having a relatively low refractive index and a thin film having a relatively high refractive index sequentially stacked on a predetermined region of the substrate; a low reflection region, having a lower reflectance than that of the substrate and including a thin film having a relatively low refractive index stacked around the high reflection region on the substrate; a DNA probe fixed at least on the high reflection region. A hybridization reaction between the DNA probe and a target DNA labeled with a fluorescent dye occurs on the high reflection region.