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 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:
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 is a livestock house management system for managing a rearing environment of livestock. The livestock house management system includes an environment monitoring sensor unit installed in each of divided zones within a livestock house and configured to measure an environment variable indicating a state of a rearing environment of each of the zones, analyze the measured environment variable, and independently generate a command corresponding to an abnormal situation of each of the zones when the abnormal situation of each of the zones is checked, and a livestock house facility control unit installed in each of the zones and configured to receive the command from the environment monitoring sensor unit installed in a corresponding zone according to a wired or wireless communication scheme, and drive a livestock house facility according to the received command to independently control a rearing environment of each of the zones.
Abstract:
A method of predicting pressure ulcers is provided. The method includes predicting, by a first pressure ulcer predictor, occurrence of pressure ulcers of a patient to output first prediction result data, based on body data of the patient, predicting, by a second pressure ulcer predictor, occurrence of pressure ulcers of the patient to output second prediction result data, based on whole body pressure data of the patient, predicting, by a third pressure ulcer predictor, occurrence of pressure ulcers of the patient to output third prediction result data, based on skin image data of the patient, and concatenating the first to third prediction result data to output final prediction result data.
Abstract:
Provided are an optical system capable of improving the spatial resolution of hyperspectral imaging and an optical alignment method using the same. The optical system includes a digital micromirror device (DMD) having a rectangular shape, a first cylindrical lens curved to focus and form an image on an axis corresponding to a shorter side of the DMD, and a second cylindrical lens curved in the same axial direction as the axis to collimate light reflected from the DMD.
Abstract:
Provided are an optical module platform structure and a method of manufacturing the same. The optical module platform structure includes an optical module platform substrate, a light source device mounted on a light source mount attached on one upper side of the optical module platform substrate, a waveguide spaced apart from the light source device by a certain interval and mounted on a waveguide mount attached on the optical module platform substrate, a lens mount fixed between the light source mount and the waveguide mount, and a lens fixed to a top of the lens mount. Therefore, optical coupling efficiency between a light source and a waveguide is maximized by applying a lens mount, and an optical alignment error is minimized.
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:
The optical transmitter module may include a thermal-electric cooler comprising at least one metal pattern formed on a side of a cooling plate temperature of which is controlled by thermo-electric cooling elements, a laser diode installed in one of the at least one metal pattern, and a monitor photo diode which is installed in another one of the at least one metal pattern and monitors change of light signals emitted from the laser diode. Therefore, since elements are located on the same side of the cooling plate, the optical transmitter module may have a simple structure and an advantage that light signals emitted from the laser diode can be directly coupled to the optical fiber without optical path conversions. Also, since the laser diode is installed with a small gap from thermal-electric elements, the temperature control characteristics of the thermal-electric cooler can be enhanced.
Abstract:
An ultra-small multi-channel optical module according to one embodiment of the present invention includes a base board, a glass substrate, a heat sink, optical elements, parallel light lenses, a first rectangular reflector, a glass cover, a second rectangular reflector, horizontal reflectors, and a light collecting lens.