Abstract: Disclosed is an optical device. The optical device includes: a first WDM filter for dividing an optical signal transmitted through and reflected from a measured subject into an optical signal of an infrared band and a first optical signal through wavelength division multiplexing; a first LC tunable wavelength filter disposed at an output end of the first WDM filter, and selectively filtering the optical signal of the infrared band; a second WDM filter for dividing the first optical signal into an optical signal of a first visible light band and a second optical signal through wavelength division multiplexing; and a second LC tunable wavelength filter disposed at an output end of the second WDM filter, and selectively filtering the optical signal of the first visible light band.

Abstract: Disclosed is a composition for activating longevity genes, particularly, a Sirt-1, Klotho, XPD, ERCC8 or FoxO3a gene, containing a kojic acid derivative as an active ingredient. The composition activates longevity genes, thereby having anticancer, lifetime extension, skin moisturization or skin barrier strengthening effects.

Abstract: Provided is a multi-channel optical module device. The optical module device includes: a light source unit configured to include a plurality of laser diodes that are capable of wavelength modulation according to current; a beam splitter unit configured to include a plurality of beam splitters that have different reflectivity and transmissivity and reflect or transmit light output from each laser diode of the light source unit to output them in a first direction or a second direction; and an optical coupler configured to couple and output the light from the beam splitter unit. Center wavelengths of the laser diodes of the light source unit are different from each other, and the number of output channels varies according to the number of laser diodes.

Abstract: Disclosed is a multi-wavelength transmission apparatus including a wavelength divider to divide an optical signal by wavelength and output wavelength-divided optical signals to different positions, the optical signal being received from an optical circulator, a first cylindrical lens to diverge the wavelength-divided optical signals along an X axis and a Y axis and allow the wavelength-divided optical signals to be promoted in a Z-direction, a second cylindrical lens to diverge optical signals output from the first cylindrical lens along the X axis and the Y axis and allow the output optical signals to be promoted in the Z-direction, and a reflector to reflect optical signals output from the second cylindrical lens toward the second cylindrical lens, the first cylindrical lens being identical in shape to the second cylindrical lens and rotated by 90° in an Y-axial direction based on the second cylindrical lens.

Abstract: The present invention relates to an optical combiner and a manufacturing method thereof, and a plurality of light source units emitting an optical signal. A reflection unit having a plurality of reflection surfaces disposed on a path of the optical signal and reflecting the optical signal so as to face toward an optical fiber, and an optical fiber holder fixing the optical fiber at a position where the optical signal reflected by the plurality of reflection surfaces is focused is included. An optical combiner and a manufacturing method thereof in which an optical fiber holder includes a plurality of division members that are radially disposed with respect to a center part of the reflection unit are disclosed.

Abstract: An integrated optical measurement apparatus includes: an optical signal transmission unit varying a wavelength of an optical signal to be transmitted and controlling power of the optical signal such that the wavelength is varied to be output to the outside; an optical signal receiving unit measuring power and a wavelength from the optical signal input from the outside; and a controller controlling the optical signal transmission unit and the optical signal receiving unit.

Abstract: Disclosed herein are an astral lamp device having detachable and angle-controllable LED module blocks and a method of setting the same. The astral lamp device having detachable and angle-controllable LED module blocks, includes a plurality of LED module blocks having one end attached to and disposed on a central frame; and an angle control part configured to control an angle of the LED module block attached to the central frame.

Abstract: An apparatus for monitoring a laser welding bead irradiates a laser to a surface of a welding bead when welding with a laser welding machine, collects a signal reflected from the surface of the welding bead as an image signal, and then extracts at least one feature variable of a bead shape using the collected image signal. Then, the apparatus for monitoring the laser welding bead determines welding defects using the at least one feature variable, and controls an operation of the laser welding machine according to whether or not the welding defects are generated.

Abstract: Provided is a multi-channel optical subassembly. The multi-channel optical subassembly includes a first sub-mount including first and second areas having different thicknesses, a photoelectric device provided in the first area, a circuit board provided in the second area, a second sub-mount inserted into and fastened to the first guide hole and coupled to the first sub-mount, an optical fiber array fixed to the second sub-mount to provide a path through which light emitted from the photoelectric device is received or transferred, and a micro-lens array mounted on the second sub-mount. The first guide hole is provided in one of the first and second areas. The micro-lens array includes a lens collecting the light between the photoelectric device and the optical fiber array.

Abstract: Disclosed is a multi-wavelength transmission apparatus including a wavelength divider to divide an optical signal by wavelength and output wavelength-divided optical signals to different positions, the optical signal being received from an optical circulator, a first cylindrical lens to diverge the wavelength-divided optical signals along an X axis and a Y axis and allow the wavelength-divided optical signals to be promoted in a Z-direction, a second cylindrical lens to diverge optical signals output from the first cylindrical lens along the X axis and the Y axis and allow the output optical signals to be promoted in the Z-direction, and a reflector to reflect optical signals output from the second cylindrical lens toward the second cylindrical lens, the first cylindrical lens being identical in shape to the second cylindrical lens and rotated by 90° in an Y-axial direction based on the second cylindrical lens.

Abstract: Provided are a multi-channel optical subassembly structure allowing an optical unit including a light source photodetector chip to be fixed through an alignment jig after active alignment is performed on an individual or single light source photodetector chip by using the alignment jig capable of electrical coupling and one electrode pad and the other electrode pad of a thermoelectric element, which are wire-bonded, capable of performing active alignment for each light source photodetector chip, that is, for each channel, capable of replacing the optical unit and the alignment jig when a problem occurs in some or all channels, capable of improving optical coupling efficiency for each channel, and capable of addressing a time-consuming and economically expensive work in which an optical subassembly is discarded when some channels fail, and a method of packaging the structure.

Abstract: Disclosed is a polarimetric-analysis-type dual liquid crystal (LC) wavelength filter module capable of miniaturization or optical integration in the form of a package.

Abstract: Provided is a multi-channel optical subassembly. The multi-channel optical subassembly includes a first sub-mount including first and second areas having different thicknesses, a photoelectric device provided in the first area, a circuit board provided in the second area, a second sub-mount inserted into and fastened to the first guide hole and coupled to the first sub-mount, an optical fiber array fixed to the second sub-mount to provide a path through which light emitted from the photoelectric device is received or transferred, and a micro-lens array mounted on the second sub-mount. The first guide hole is provided in one of the first and second areas. The micro-lens array includes a lens collecting the light between the photoelectric device and the optical fiber array.

Abstract: Disclosed is a composition for activating longevity genes, particularly, a Sirt-1, Klotho, XPD, ERCC8 or FoxO3a gene, containing a kojic acid derivative as an active ingredient. The composition activates longevity genes, thereby having anticancer, lifetime extension, skin moisturization or skin barrier strengthening effects.

Abstract: Provided is an endoscopic apparatus for thermal distribution monitoring, and more particularly, an endoscopic apparatus for thermal distribution monitoring that is capable of providing a functional image in which various images such as a real image and a thermal image, are matched to one another. The endoscopic apparatus includes: an image collecting unit including a thermal image collecting unit collecting a thermal image from an image signal of an object and a real image collecting unit collecting a real image from the image signal of the object; a controller transmitting a control signal to the image collecting unit so as to transmit the image signal to one of the thermal image collecting unit and the real image collecting unit according to a preset period; and a display displaying the collected thermal image and real image.

Abstract: Provided herein is a single module bi-directional optical transmitting and receiving system including a transmitter transmitting an optical signal by converting a down-signal, and obtaining an up-signal by converting y the optical signal that is received, and a receiver transmitting the optical signal by converting the up-signal, and obtaining the down-signal by converting the optical signal that is received, wherein the transmitter and the receiver include a single optical transmitting module including a monitor receiving module, transmit the optical signal through the single optical transmitting module, and receive the optical signal through the monitor receiving module.

Abstract: Provided is an optical distribution network (ODN) including an optical cable and an optical node, and more particularly, an optical distribution network including an optical cable and an optical node, wherein the optical node is implemented to acquire and analyze information regarding the optical cable through an optical connector included in the optical cable, and an operating method thereof. The ODN includes an optical cable and an optical node connectable to the optical cable, wherein the optical cable has an optical connector capable of being joined to the optical node, and the optical connector has an electronic tag configured to store identification information of the optical cable and a first connection pin configured to electrically connect the electronic tag and the optical node.

Abstract: A method of packaging a multi-channel optical receiver module and a package of the same are provided. The method includes installing a first lens on a sub-mount; aligning an optical block including a plurality of filters on the sub-mount; installing the aligned optical block on the sub-mount; aligning a second lens on the sub-mount; installing the aligned second lens on the sub-mount; and coupling the sub-mount to a TO-stem. The aligning of the optical block transmits light incident through the first lens to the plurality of filters, transmits light beams transmitted through the plurality of filters to an object lens, monitors positions of and intervals between the light beams transmitted through an infrared (IR) camera and aligns the optical block so that the intervals between the light beams transmitted through the plurality of filters are identical.

Abstract: Provided herein is an optical module including: an optical receptacle including a first lens and a second lens; a lens module including a lens unit facing the second lens of the optical receptacle; and an optical element configured to receive a beam emitted from the lens module or form a beam to be emitted to the lens module. A horizontal length and a vertical length of a cross-section of the first lens may differ from each other, and a horizontal length and a vertical length of a cross-section of the second lens may differ from each other.

Abstract: A display device includes a display panel, and a depth perception adjusting unit for adjusting a depth perception, based on polarization characteristics of light output from the display panel, wherein the depth perception adjusting unit includes a directional mirror and a reflective polarizer. Thus, the display device is implemented such that the directional mirror transmits or reflects light depending on an advancing direction of the light. Accordingly, any crosstalk phenomenon does not occur, and a depth perception can be adjusted without any loss of brightness efficiency.