Abstract: In a roller gap measurement system and a roller gap measurement method using the roller gap measurement system, the roller gap measurement system includes a light source, a refractive part, a sensor part and an image processing part. The light source is configured to provide an incident light toward the gap between first and second rollers. The refractive part is configured to receive a complex light passing through the gap between the first and second rollers, and configured to refract the complex light. The sensor part is configured to receive the refracted light and configured to image a complex pattern. The image processing part is configured to obtain a gap information between the first and second rollers, based on the imaged complex pattern.

Abstract: Disclosed are a catheter which can perform both multi diagnosis and treatment, and a catheter system comprising same. A multi diagnosis and treatment catheter comprises: a triple-clad fiber; and a lens connected to one end of the triple-clad fiber. The triple-clad fiber comprises: a core guiding a first diagnostic light; a first cladding surrounding the core and guiding a second diagnostic light; a second cladding surrounding the first cladding; a third cladding surrounding the second cladding and guiding a therapeutic light; and a coating layer surrounding the third cladding.

Abstract: Disclosed is an image segmentation device. The image segmentation device may include: a storage unit storing a segmentation model learned so as to segment at least one predetermined object; and at least one processor inputting input data into the segmentation model and segmenting at least one predetermined object in the input data, in which the segmentation model may include an encoder including at least one dimension reduction block reducing a dimension of the input data, a decoder including at least one dimension increase block increasing the dimension of output data output from the encoder by using data output from at least one dimension reduction block, and an auxiliary classification model receiving the output data and recognizing whether a specific object is included in the output data.

Abstract: Disclosed is an image segmentation device. The image segmentation device may include: a storage unit storing a segmentation model learned so as to segment at least one predetermined object; and at least one processor inputting input data into the segmentation model and segmenting at least one predetermined object in the input data, in which the segmentation model may include an encoder including at least one dimension reduction block reducing a dimension of the input data, a decoder including at least one dimension increase block increasing the dimension of output data output from the encoder by using data output from at least one dimension reduction block, and an auxiliary classification model receiving the output data and recognizing whether a specific object is included in the output data.

Abstract: Disclosed are an optical fiber probe and a method for manufacturing an optical fiber probe which can reduce astigmatism. The disclosed optical fiber probe comprises: an optical fiber configured to receive light inputted from a light source; a reflection part configured to reflect the inputted light in the direction of a cylindrical surface; and a transparent window comprising an incidence surface and an output surface, the incidence surface coupled to the cylindrical surface of the reflection part, the output surface comprising a curvature thereof different from a curvature of the cylindrical surface.

Abstract: Disclosed is an image segmentation device. The image segmentation device may include: a storage unit storing a segmentation model learned so as to segment at least one predetermined object; and at least one processor inputting input data into the segmentation model and segmenting at least one predetermined object in the input data, in which the segmentation model may include an encoder including at least one dimension reduction block reducing a dimension of the input data, a decoder including at least one dimension increase block increasing the dimension of output data output from the encoder by using data output from at least one dimension reduction block, and an auxiliary classification model receiving the output data and recognizing whether a specific object is included in the output data.

Abstract: Disclosed are a catheter which can perform both multi diagnosis and treatment, and a catheter system comprising same. A multi diagnosis and treatment catheter comprises: a triple-clad fiber; and a lens connected to one end of the triple-clad fiber. The triple-clad fiber comprises: a core guiding a first diagnostic light; a first cladding surrounding the core and guiding a second diagnostic light; a second cladding surrounding the first cladding; a third cladding surrounding the second cladding and guiding a therapeutic light; and a coating layer surrounding the third cladding.

Abstract: Disclosed is an imaging catheter system that utilizes optical coherence tomography and autofluorescence lifetime imaging microscopy. The disclosed imaging catheter system may include: an autofluorescence light source; an OCT device; a catheter device configured to receive rays inputted from the autofluorescence light source and an OCT light source of the OCT device and scan a specimen; an optical detector unit configured to detect autofluorescence generated from the specimen; and a first optics system configured to transfer the autofluorescence to the optical detector unit and transfer a ray of the OCT light source reflected from the specimen to the OCT device.

Abstract: Disclosed are an optical fiber probe and a method for manufacturing an optical fiber probe which can reduce astigmatism. The disclosed optical fiber probe comprises: an optical fiber configured to receive light inputted from a light source; a reflection part configured to reflect the inputted light in the direction of a cylindrical surface; and a transparent window comprising an incidence surface and an output surface, the incidence surface coupled to the cylindrical surface of the reflection part, the output surface comprising a curvature thereof different from a curvature of the cylindrical surface.

Abstract: Disclosed is an annular-beam coupling system enabling reduction of noise generated from a core of a double-clad fiber. The disclosed annular-beam coupling system comprises: a fiber for transmitting light of a light source; a collimator for receiving the light outputted from the fiber and forming a parallel beam of a circular shape; an annular-beam generation unit for converting the parallel beam into an annular beam; and a double-clad fiber having the annular beam coupled to a cladding region thereof.

Abstract: An optical probe, according to one embodiment, comprises: an optical fiber into which light for irradiating an object is incident from a light source; a lens which focuses the light incident into the optical fiber; and a wavefront modulator on which a pattern is formed so that the wavefront of the light incident into the optical fiber can be modulated, wherein the optical fiber, the lens, and the wavefront modulator are arranged on the same axis, the light passing through the wavefront modulator can form a focus on the same axis, and the resolution or focal depth of the light can be adjusted through a pattern design formed on the wavefront modulator.

Abstract: Disclosed are a collimator for reducing noise of a scanned image and an imaging catheter system comprising the same. The disclosed noise attenuation collimator comprises: a transparent tube having a diameter larger than a cladding diameter of double-clad fiber, wherein a coatingless region of the double-clad fiber is inserted into the transparent tube; and a first resin layer which is applied to an exterior of the transparent tube and has a refractive index lower than the refractive index of the transparent tube.

Abstract: Disclosed is an annular-beam coupling system enabling reduction of noise generated from a core of a double-clad fiber. The disclosed annular-beam coupling system comprises: a fiber for transmitting light of a light source; a collimator for receiving the light outputted from the fiber and forming a parallel beam of a circular shape; an annular-beam generation unit for converting the parallel beam into an annular beam; and a double-clad fiber having the annular beam coupled to a cladding region thereof.

Abstract: Disclosed are a collimator for reducing noise of a scanned image and an imaging catheter system comprising the same. The disclosed noise attenuation collimator comprises: a transparent tube having a diameter larger than a cladding diameter of double-clad fiber, wherein a coatingless region of the double-clad fiber is inserted into the transparent tube; and a first resin layer which is applied to an exterior of the transparent tube and has a refractive index lower than the refractive index of the transparent tube.

Abstract: The present disclosure provides a full-field OCT system using a wavelength-tunable laser, which can observe peaks of a short-time A-line profile corresponding to each time point at which interference images of an object to be measured are acquired, so as to measure a depth direction movement of the object to be measured, and can correct the phases of interference signals on the basis of the measured depth direction movement, so as to generate an OCT image which is compensated for the depth direction movement.

Abstract: The present disclosure provides a full-field OCT system using a wavelength-tunable laser, which can observe peaks of a short-time A-line profile corresponding to each time point at which interference images of an object to be measured are acquired, so as to measure a depth direction movement of the object to be measured, and can correct the phases of interference signals on the basis of the measured depth direction movement, so as to generate an OCT image which is compensated for the depth direction movement.

Abstract: Disclosed is an imaging catheter system that utilizes optical coherence tomography and autofluorescence lifetime imaging microscopy. The disclosed imaging catheter system may include: an autofluorescence light source; an OCT device; a catheter device configured to receive rays inputted from the autofluorescence light source and an OCT light source of the OCT device and scan a specimen; an optical detector unit configured to detect autofluorescence generated from the specimen; and a first optics system configured to transfer the autofluorescence to the optical detector unit and transfer a ray of the OCT light source reflected from the specimen to the OCT device.

Abstract: Provided is a drug carrier for treatment of atherosclerosis including a biocompatible amphipathic polymer including a macrophage ligand polymer and a hydrophobic substance, and a hydrophobic drug.

Abstract: An optical probe, according to one embodiment, comprises: an optical fiber into which light for irradiating an object is incident from a light source; a lens which focuses the light incident into the optical fiber; and a wavefront modulator on which a pattern is formed so that the wavefront of the light incident into the optical fiber can be modulated, wherein the optical fiber, the lens, and the wavefront modulator are arranged on the same axis, the light passing through the wavefront modulator can form a focus on the same axis, and the resolution or focal depth of the light can be adjusted through a pattern design formed on the wavefront modulator.

Abstract: Provided is a drug carrier for treatment of atherosclerosis including a biocompatible amphipathic polymer including a macrophage lignad polymer and a hydrophobic substance, and a hydrophobic drug.