Abstract: A vehicular heat management system includes a refrigerant circulation line configured to generate hot energy or cold energy depending on a flow direction of a refrigerant, a heater core side coolant circulation line configured to transfer refrigerant heat generated in the refrigerant circulation line to a heater core to heat a passenger compartment, and a battery side coolant circulation line configured to receive coolant heat of the heater core side coolant circulation line via a coolant and then circulate the coolant through a battery to preheat the battery.

Abstract: A vehicular heat management system is provided with a heat pump type refrigerant circulation line that cools and heats specific air conditioning regions by generating a hot air or a cold air depending on a flow direction of a refrigerant. The system includes a compressor configured to suck, compress and discharge the refrigerant, a high-pressure side heat exchanger configured to dissipate heat of the refrigerant discharged from the compressor, an outdoor heat exchanger configured to allow the refrigerant to exchange heat with an air outside the vehicle, an expansion valve configured to depressurize the refrigerant flowing out of the high-pressure side heat exchanger or the outdoor heat exchanger, and one or more low-pressure side heat exchangers configured to evaporate the depressurized refrigerant. The outdoor heat exchanger and the low-pressure side heat exchangers are connected in series or in parallel depending on an air conditioning mode.

Abstract: A vehicular heat management system is provided with a heat pump type refrigerant circulation line that cools and heats specific air conditioning regions by generating a hot air or a cold air depending on a flow direction of a refrigerant. The system includes a compressor configured to suck, compress and discharge the refrigerant, a high-pressure side heat exchanger configured to dissipate heat of the refrigerant discharged from the compressor, an outdoor heat exchanger configured to allow the refrigerant to exchange heat with an air outside the vehicle, an expansion valve configured to depressurize the refrigerant flowing out of the high-pressure side heat exchanger or the outdoor heat exchanger, and one or more low-pressure side heat exchangers configured to evaporate the depressurized refrigerant. The outdoor heat exchanger and the low-pressure side heat exchangers are connected in series or in parallel depending on an air conditioning mode.

Abstract: The present invention relates to an air conditioner for a vehicle having a rear seat outlet, which can relieve temperature inversion that discharge temperature of the console vent becomes higher than discharge temperature of a rear seat floor vent in a bi-level mode, and prevent reduction of air volume of the console vent in the cooling mode. The air conditioner for a vehicle, which has a rear seat outlet, includes an air-conditioning case having an air passageway formed therein and a plurality of air outlets, and a cooling heat exchanger and a heating heat exchanger disposed in the air passageway of the air-conditioning case to exchange heat with air passing through the air passageway. Wherein the air outlets include a console vent and a rear seat floor vent, and an entrance of the rear seat floor vent is formed above an entrance of the console vent.

Abstract: The present invention relates to an air conditioner for a vehicle, in which a means for fixing a cable connecting device is disposed integrally with an air-conditioning case, thereby having an optimized installation location, keeping rigidity, achieving weight lightening, and enhancing assemblability. The air conditioner is to condition air in the interior of the vehicle by heating or cooling indoor air, and includes: a cable connecting device for connecting an actuating means of a controller of the vehicle to actuate a door inside an air-conditioning case with an actuating means of the air-conditioning case by a cable; and a cable fixing part for fixing the cable connecting device to the air-conditioning case.

Abstract: The present invention relates to an air conditioner for a vehicle can enhance sealing performance and is resistant to noise and vibration, and prevent penetration of water into the interior of the vehicle by inducing water introduced into a seal into an air-conditioning case by a pressure difference. The air conditioner for a vehicle, which has a structure that a pipe of a heat exchanger penetrates through a dash panel (150) of the vehicle, includes: a bracket (140) for inserting and fixing the pipe; and a seal (160) for fixing the bracket (140) between an air-conditioning case and the seal to get in contact with the air-conditioning case.

Abstract: The present invention relates to an air conditioner for a vehicle having a rear seat outlet, which can relieve temperature inversion that discharge temperature of the console vent becomes higher than discharge temperature of a rear seat floor vent in a bi-level mode, and prevent reduction of air volume of the console vent in the cooling mode. The air conditioner for a vehicle, which has a rear seat outlet, includes an air-conditioning case having an air passageway formed therein and a plurality of air outlets, and a cooling heat exchanger and a heating heat exchanger disposed in the air passageway of the air-conditioning case to exchange heat with air passing through the air passageway, wherein the air outlets include a console vent and a rear seat floor vent, and an entrance of the rear seat floor vent is formed above an entrance of the console vent.

Abstract: A vehicular heat management system includes a refrigerant circulation line configured to generate hot energy or cold energy depending on a flow direction of a refrigerant, a heater core side coolant circulation line configured to transfer refrigerant heat generated in the refrigerant circulation line to a heater core to heat a passenger compartment, and a battery side coolant circulation line configured to receive coolant heat of the heater core side coolant circulation line via a coolant and then circulate the coolant through a battery to preheat the battery.

Abstract: The present invention relates to an air conditioner for a vehicle can enhance sealing performance and is resistant to noise and vibration, and prevent penetration of water into the interior of the vehicle by inducing water introduced into a seal into an air-conditioning case by a pressure difference. The air conditioner for a vehicle, which has a structure that a pipe of a heat exchanger penetrates through a dash panel (150) of the vehicle, includes: a bracket (140) for inserting and fixing the pipe; and a seal (160) for fixing the bracket (140) between an air-conditioning case and the seal to get in contact with the air-conditioning case.

Abstract: The present invention relates to an air conditioner for a vehicle, in which a means for fixing a cable connecting device is disposed integrally with an air-conditioning case, thereby having an optimized installation location, keeping rigidity, achieving weight lightening, and enhancing assemblability. The air conditioner is to condition air in the interior of the vehicle by heating or cooling indoor air, and includes: a cable connecting device for connecting an actuating means of a controller of the vehicle to actuate a door inside an air-conditioning case with an actuating means of the air-conditioning case by a cable; and a cable fixing part for fixing the cable connecting device to the air-conditioning case.

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: 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: Disclosed are an optical image modulator, an optical apparatus including the same, and methods of manufacturing and operating the optical image modulator. The optical image modulator includes a light amount increasing unit increasing the amount of forward light emission of an electric-optical unit. The light amount increasing unit includes a first reflector reflecting light, which travels from the inside of the electric-optical unit toward the optical-electric unit, to the electric-optical unit. The light amount increasing unit may further include a second light reflector reflecting light, which passes through the optical-electric unit without optical-electric conversion, to the optical-electric unit.

Abstract: The invention discloses an in-line polarization-state converter. In the polarization converter, a laser beam is radiated onto the side of a photosensitive optical fiber. The laser beam causes the refractive index of an optical fiber core to asymmetrically vary. Birefringence is induced in a core mode of the optical fiber by the variation in the asymmetrical refractive index. An optical fiber segment having the birefringence is generally disposed on a waveguide path of the optical fiber to change the polarization state of an optical signal passing through the optical fiber segment. That is, the phase of the optical signal passing through the optical fiber is changed by radiation of laser beams, which results in a variation in polarization state. The polarization converter disposed on the waveguide path is covered with a metal tube in order to prevent the polarization converter from being bent or broken.

Abstract: Disclosed are an optical image modulator, an optical apparatus including the same, and methods of manufacturing and operating the optical image modulator. The optical image modulator includes a light amount increasing unit increasing the amount of forward light emission of an electric-optical unit. The light amount increasing unit includes a first reflector reflecting light, which travels from the inside of the electric-optical unit toward the optical-electric unit, to the electric-optical unit. The light amount increasing unit may further include a second light reflector reflecting light, which passes through the optical-electric unit without optical-electric conversion, to the optical-electric unit.

Abstract: The invention discloses an in-line polarization-state converter. In the polarization converter, a laser beam is radiated onto the side of a photosensitive optical fiber. The laser beam causes the refractive index of an optical fiber core to asymmetrically vary. Birefringence is induced in a core mode of the optical fiber by the variation in the asymmetrical refractive index. An optical fiber segment having the birefringence is generally disposed on a waveguide path of the optical fiber to change the polarization state of an optical signal passing through the optical fiber segment. That is, the phase of the optical signal passing through the optical fiber is changed by radiation of laser beams, which results in a variation in polarization state. The polarization converter disposed on the waveguide path is covered with a metal tube in order to prevent the polarization converter from being bent or broken.

Abstract: A Fresnel lens-integrated optical fiber that can be easily aligned and manufactured in miniature, and a method of fabricating the same are provided. The Fresnel lens-integrated optical fiber includes a light transmission section transmitting incident light, a light expansion section coupled to the light transmission section and expanding light provided from the light transmission section, and a Fresnel lens surface formed on a section of the light expansion section and focusing by passing through the light expanded in the light expansion section at a predetermined focal length. Accordingly, since the Fresnel lens surface has no curvature, arrangement of an optical coupling system is easy, manufacture is easy, and the optical coupling system can be miniaturized.

Abstract: Disclosed are an optical fiber probe for side imaging and a method of manufacturing the same. An optical fiber probe according to an aspect of the invention includes a photonic crystal fiber, and an optical fiber lens that is formed by applying heat to a predetermined region including one end of the photonic crystal fiber and substantially removing air holes formed in the predetermined region. The optical fiber lens includes a light diffusion region that diffuses light propagating along a core of the photonic crystal fiber and focuses the light to enable side imaging, a reflector surface that reflects the light at a right angle to enable side imaging, and a lens surface that focuses the light. A small-sized optical fiber probe can be manufactured using a simple manufacturing process, and the optical fiber probe can be miniaturized. Therefore, a light measurement system can be miniaturized, which makes it possible to obtain side images of a very small sample, such as a blood vessel.

Abstract: The invention discloses an in-line polarization-state converter. In the polarization converter, a laser beam is radiated onto the side of a photosensitive optical fiber. The laser beam causes the refractive index of an optical fiber core to asymmetrically vary. Birefringence is induced in a core mode of the optical fiber by the variation in the asymmetrical refractive index. An optical fiber segment having the birefringence is generally disposed on a waveguide path of the optical fiber to change the polarization state of an optical signal passing through the optical fiber segment. That is, the phase of the optical signal passing through the optical fiber is changed by radiation of laser beams, which results in a variation in polarization state. The polarization converter disposed on the waveguide path is covered with a metal tube in order to prevent the polarization converter from being bent or broken.

Abstract: Provided is a resonant cascaded difference frequency generator that is capable of improving the conversion efficiency of the second-order nonlinear optical phenomena by resonating the second harmonic wave of a pump light. The resonant cascaded difference frequency generator includes: a nonlinear medium, which receives a pump light and a signal light and then generates the second harmonic wave of the pump light through second harmonic generation, in a cascaded way generates a converted light of a difference frequency through difference frequency generation between the signal light and the second harmonic wave; and a resonant structure that resonates the second harmonic wave of the pump light on the basis of the nonlinear medium.