Abstract: Disclosed herein is a capsule type photodynamic therapy apparatus. The apparatus has an anchor packaged with a silicone dome to anchor the apparatus to target tissue in a body by an endoscope, and includes a battery to communicate with an external device via human body communication in the silicone dome, and is repeatedly operated several times under the control of the external device to irradiate the target tissue with a therapeutic light source and thereby repeatedly treat the target tissue several times.

Abstract: Disclosed herein is a method for quantifying a pigmented lesion using Optical Coherence Tomography (OCT). The method includes (a) irradiating light and receiving an interference signal produced by reflection of the light from first and second boundary layers of a pigmented lesion; and (b) calculating size information of the pigmented lesion using phase information of the interference signal. According to embodiments of the present invention, there is an advantage of allowing calculation of size information of a pigmented lesion using OCT, by increasing a measurement range in the axial direction to which beams are irradiated.

Abstract: Disclosed is fluorophosphate glasses for an active device, the fluorophosphate glasses including: a metaphosphate composition including Mg(PO3)2 of about 20 mol % to about 60 mol %; a fluoride composition including BaF2 of about 20 mol % to about 60 mol % and CaF2 of about 0 mol % to about 40 mol %; and dopants including rare earth elements, in which there is an effect of increasing a carrier lifetime at a metastable state energy level that is stimulated-emitted due to an efficient energy transfer phenomenon by composition optimization of dopants (e.g. Er and Yb).

Abstract: The disclosed fluorophosphate glasses for an active device include: a metaphosphate composition including Al(PO3)3; a fluoride composition including BaF2 and SrF2; and a dopant composed of ErF3 and YbF3, and have thermal and mechanical properties to be able to be used as a glass base material for an active device (e.g., optical fiber laser), have a high emission cross-section characteristic, have a reinforced upconversion and downconversion emission characteristic, and have high sensitivity S in a cryogenic environment.

Abstract: A nitride semiconductor light-emitting device comprises a substrate; a first conductivity type semiconductor layer formed on the substrate; a high-resistance semiconductor layer formed on the first conductivity type semiconductor layer; an active layer formed on the high-resistance semiconductor layer and having multiple quantum wells; and a second conductivity type semiconductor layer formed on the active layer. A first v-pit structure is formed between the high-resistance semiconductor layer and the first conductivity type semiconductor layer, and a second v-pit structure is formed between the active layer and the second conductivity type semiconductor layer. The second v-pit structure is formed such that a lowest part of the second conductivity type semiconductor layer contacts a lowest quantum well of the multiple quantum wells of the active layer through the second v-pit structure.

Abstract: The present invention relates to an apparatus and a method of acquiring an image for dental diagnosis. More particularly, the present invention relates to an apparatus and a method of acquiring a near-infrared image for dental diagnosis, wherein an image for dental diagnosis is acquired using near-infrared radiation and a general image camera rather than using X-rays.

Abstract: The present disclosure relates to a confocal imaging apparatus using a chromatic aberration lens, which is capable of quickly implementing multiple tomographic images by making it possible to quickly scan the entire object without moving the light source or the object. Since the present invention is configured to generate a three-dimensional image using multiple tomographic images by a chromatic aberration lens without moving the light source or the object up and down, there is an effect of remarkably shortening the time it takes to implement the multiple tomographic images.

Abstract: A unit light source module configured as a 3D display system includes a light emitting unit including a plurality of point light sources corresponding to a number of viewpoints and a light collecting unit disposed a predetermined distance apart from the light emitting unit and collecting and outputting the light source outputted from the plurality of point light sources.

Abstract: The present invention is intended to provide a light-emitting diode (LED) structure which can be easily transferred onto another substrate, a transfer assembly whose adhesive strength with LED structures can be maintained in spite of repetitive transfer processes, LED structures and a transfer assembly for selectively transferring the LED structures, and a transfer method using the same.

Abstract: Provided are a light emitting device having a nitride quantum dot and a method of manufacturing the same. The light emitting device may include: a substrate; a nitride-based buffer layer arranged on the substrate; a plurality of nanorod layers arranged on the nitride-based buffer layer in a vertical direction and spaced apart from each other; a nitride quantum dot arranged on each of the plurality of nanorod layers; and a top contact layer covering the plurality of nanorod layers and the nitride quantum dots. A pyramid-shaped material layer may be further included between each of the plurality of nanorod layers and each of the nitride quantum dots. One or the plurality of nitride quantum dots may be arranged on each of the nanorod layers.

Abstract: Provided are a semiconductor laser diode and a method for fabricating the same. The semiconductor laser diode includes a c-plane substrate, a group III nitride layer disposed on the c-plane substrate, and a first semiconductor layer, an active layer, and a second semiconductor layer disposed on the group III nitride layer in the stated order, wherein each of the first semiconductor layer and the second semiconductor layer is exposed to the outside of the semiconductor laser diode.

Abstract: A nitride semiconductor light-emitting device and a method for manufacturing same for improving the electrostatic discharge (ESD) characteristics of the nitride semiconductor light-emitting device. The light-emitting device includes an active layer formed flat using a low conductivity material, on a first conductive semiconductor layer having a v-pit structure on the upper surface thereof, and a second conductive semiconductor layer, or has a v-pit structure on a junction surface between a second conductive semiconductor layer and an active layer formed flat using a low conductivity material on a first conductive semiconductor layer having a v-pit structure on the upper surface thereof. Thus, a v-pit area has a thickness equal to or greater than a critical thickness and thus has very low conductivity, thereby preventing the flow of a current.

Abstract: Disclosed is a device for manufacturing a skin-simulating phantom, which has properties that are similar to those of real skin, using a 3D printer so that layers are stacked to form a multi-layered structure and a nozzle tip connected to the 3D printer is used to provide roughness, and a method of manufacturing a skin-simulating phantom using the same. According to this present invention, solutions can be mixed, depending on the component constitution reflecting the optical properties of the skin, using a program that is set depending on the type of skin. The output condition of the 3D printer can be controlled using a program that is set so as to conduct a step of comparing measured thickness and roughness values to those of the real skin and performing feedback. The nozzle tip connected to the 3D printer can move up and down to provide roughness. Further, the multi-layered structure can be manufactured using the 3D printer, thereby outputting and embodying lesions.

Abstract: The present invention relates to a three-dimensional oral cavity scan device for a digital impression that obtains a three-dimensional image by processing a two-dimensional image acquired by photographing a three-dimensional subject in an oral cavity. The device includes: a pattern mask converting parallel light incident thereto into structured light; a piezoelectric plate where a mechanical vibration is generated on a surface thereof by an AC voltage applied thereto; and a power supply unit applying the AC voltage to the piezoelectric plate, wherein the piezoelectric plate moves the pattern mask in a longitudinal direction of the piezoelectric plate by using the mechanical vibration. The device can reduce noise and vibration by moving the pattern mask with an electrical method. In addition, the device can accurately measure depth of teeth by electrically controlling a focal length of structured light projected on the teeth.

Abstract: An optical transmission and reception connector system includes a cable that has a plug section formed at both ends thereof so as to relay and transmit light and an interfacing module that is mounted on an electronic apparatus and that includes an insertion space into which the plug section is detachably inserted. The cable is provided with a first relay optical path and a second relay optical path.

Abstract: Provided is an apparatus for acquiring and projecting a broadband image. The apparatus includes a probe unit provided with a white light source unit configured to emit white light for acquiring a visible light image to a subject, a fluorescence excitation light source unit configured to emit fluorescence excitation light for acquiring an invisible light fluorescence image, an image acquisition unit configured to receive an invisible light fluorescence image signal for the subject, and an image projection unit configured to project an image onto the subject; and an image processing unit configured to process an image received from the image acquisition unit. This apparatus may simultaneously acquire and display the visible light image and the invisible light fluorescence image.

Abstract: A fluorescent image acquisition and projection apparatus for real-time visualization of an invisible fluorescent signal is provided. The apparatus visualizes an invisible fluorescent signal generated from a target object (a tissue of a living body, a cell of a living body, or the like) by using a photodetection unit and a projector in real time. The apparatus directly projects a visualized fluorescent signal onto a region of the target object where the invisible fluorescent signal is generated, thereby enabling users to determine and confirm the generation location of the fluorescence with the naked eye.

Abstract: The present invention relates to a three-dimensional oral cavity scan device for a digital impression that obtains a three-dimensional image by processing a two-dimensional image acquired by photographing a three-dimensional subject in an oral cavity. The device includes: a pattern mask converting parallel light incident thereto into structured light; a piezoelectric plate where a mechanical vibration is generated on a surface thereof by an AC voltage applied thereto; and a power supply unit applying the AC voltage to the piezoelectric plate, wherein the piezoelectric plate moves the pattern mask in a longitudinal direction of the piezoelectric plate by using the mechanical vibration. The device can reduce noise and vibration by moving the pattern mask with an electrical method. In addition, the device can accurately measure depth of teeth by electrically controlling a focal length of structured light projected on the teeth.

Abstract: Provided are a light emitting device having a nitride quantum dot and a method of manufacturing the same. The light emitting device may include: a substrate; a nitride-based buffer layer arranged on the substrate; a plurality of nanorod layers arranged on the nitride-based buffer layer in a vertical direction and spaced apart from each other; a nitride quantum dot arranged on each of the plurality of nanorod layers; and a top contact layer covering the plurality of nanorod layers and the nitride quantum dots. A pyramid-shaped material layer may be further included between each of the plurality of nanorod layers and each of the nitride quantum dots. One or the plurality of nitride quantum dots may be arranged on each of the nanorod layers.

Abstract: Provided are electronic devices having quantum dots and methods of manufacturing the same. An electronic device includes a first nanorod, a quantum dot disposed on an upper surface of the first nanorod, and a second nanorod that covers a lateral surface of the first nanorod and the quantum dot. The first nanorod and the second nanorod are of opposite types.