Abstract: The perovskite compound according to the invention has a cubic perovskite structure, has high catalytic activity in oxygen reduction and evolution reactions, and has excellent durability, and thus, can be used as a catalyst of electrochemical devices, particularly as a fuel cell catalyst.

Abstract: A distance measuring apparatus includes an image sensor and an image sensor driver. The image sensor includes a photodiode, a first capacitor and a second capacitor, and a first transfer gate and a second transfer gate configured to transmit an output of the photodiode to the respective first and second capacitors. The image sensor driver is configured to complementarily drive the first transfer gate and the second transfer gate.

Abstract: Provided is an absolute position color scale disposed to represent a binary code using a first symbol, having a first width and representing a first state (“HIGH”), and a second symbol having the first width and representing a second state (“LOW”). Each of the first and second symbols is divided into two or more segments having the same structure, and the first symbol has the same shape as the second symbol, but has a color pattern different from a color pattern of the symbol.

Abstract: Provided is an absolute position color scale disposed to represent a binary code using a first symbol, having a first width and representing a first state (“HIGH”), and a second symbol having the first width and representing a second state (“LOW”). Each of the first and second symbols is divided into two or more segments having the same structure, and the first symbol has the same shape as the second symbol, but has a color pattern different from a color pattern of the symbol.

Abstract: A distance measuring apparatus includes an image sensor and an image sensor driver. The image sensor includes a photodiode, a first capacitor and a second capacitor, and a first transfer gate and a second transfer gate configured to transmit an output of the photodiode to the respective first and second capacitors. The image sensor driver is configured to complementarily drive the first transfer gate and the second transfer gate.

Abstract: A device for treating dry eye syndrome and strengthening eyesight, of the present invention, comprises: a water goggles main body part into which a saline solution is injected, and which is closely adhered to the facial surface of a user, thereby allowing muscular exercise of the eyeballs to be carried out in the saline solution; a saline solution container coupled to the upper part of the water goggles main body part so as to supply a predetermined amount of saline solution; and a display device fixed to the front of the saline solution container, and in which an ocular muscle strengthening program for guiding the user's line of vision is executed so as to enable eyeball exercise to be performed in the saline solution.

Abstract: A continuous cultivation system for growing an organic ginseng using multilevel cultivation tables. The system includes a facility including: a rainproof plastic roof, a first sun-shading screen placed on the rainproof plastic roof and allows transmission of an adequate amount of sunlight for cultivation of ginseng, and a second sun-shading screen installed at front, back, and left, and right sides of the facility and that allows air to smoothly pass therethrough; a plurality of multilevel cultivation tables that includes three or more levels of cultivation tables respectively; a water supply device for uniformly supplying water to the cultivation tables; a ventilation window and an air blowing fan installed on a ceiling of the facility to ventilate an upper portion of the facility; and auxiliary light sources installed under all of the cultivation tables except for lowermost cultivation tables.

Abstract: Disclosed herein is a combustion oscillation estimating apparatus which estimates combustion oscillation in a combustion chamber connected with a burner so that a flame is injected by the burner, the combustion oscillation estimating apparatus including an input unit which receives data including an inlet pressure of the burner, and a control unit which detects a pressure in the combustion chamber based on a shape from the burner to the combustion chamber, a temperature distribution in the combustion chamber, and a shape of the flame. The combustion oscillation estimating apparatus may improve estimation accuracy of the combustion oscillation in the combustion chamber.

Abstract: A thickness measuring apparatus and a thickness measuring method. The thickness measuring apparatus includes a light source outputting an extended monochromatic light with coherence; a collimating lens converting output light of the light source into incident beam of parallel ray; a beam splitter reflecting and providing the incident beam to a measurement target and transmitting first reflection light reflected on a top surface of the measurement target and second reflection light reflected on a bottom surface of the measurement target; an imaging lens disposed between the measurement target and the beam splitter with a predetermined focal distance to receive and provide the incident beam to a measurement position of the measurement target disposed on the focal distance; a camera photographing an interference fringe formed by the first and second reflection lights and outputting an interference fringe image; and a processing part.

Abstract: Provided are a thickness measuring apparatus and a thickness measuring method. The thickness measuring method includes irradiating a first laser beam of a first wavelength ?1 to a transparent substrate and measuring intensity of the first laser beam transmitting through the transparent substrate; irradiating a second laser beam of a second wavelength ?2 to the transparent substrate and measuring intensity of the second laser beam transmitting through the transparent substrate; and extracting a rotation angle on a Lissajous graph using the first and second laser beams transmitting through the transparent substrate. A phase difference between adjacent rays by multiple internal reflection of the first laser beam and a phase difference between adjacent rays by multiple internal reflection of the second laser beam is maintained at ?/2.

Abstract: A device for treating dry eye syndrome and strengthening eyesight, of the present invention, comprises: a water goggles main body part into which a saline solution is injected, and which is closely adhered to the facial surface of a user, thereby allowing muscular exercise of the eyeballs to be carried out in the saline solution; a saline solution container coupled to the upper part of the water goggles main body part so as to supply a predetermined amount of saline solution; and a display device fixed to the front of the saline solution container, and in which an ocular muscle strengthening program for guiding the user's line of vision is executed so as to enable eyeball exercise to be performed in the saline solution.

Abstract: Provided are an absolute position measurement method, an absolute position measurement apparatus, and a scale. The scale includes a scale pattern formed by replacing repeatedly arranged pseudo-random-codes with a sequence of a linear feedback shift register of N stages using a first symbol with first width representing a first state and a second symbol with second width representing a second state. The first is divided into two or more first symbol areas of different structures, and the second symbol is divided into two or more second symbol areas of different structures. There is at least one overlap area in which the first symbol and the second symbol overlap each other to have the same structure.

Abstract: A display employing a signal transmission scheme using an optical interconnection together with an electrical interconnection is provided. The display includes a screen including a plurality of sub displays configured to display information, a plurality of sub signal processors electrically connected to the plurality of sub displays, the sub signal processors being configured to perform conversion between an optical signal and an electrical signal, and a main signal processor optically connected to at least a portion of the plurality of sub signal processors.

Abstract: A thickness measuring apparatus and a thickness measuring method. The thickness measuring apparatus includes a light source outputting an extended monochromatic light with coherence; a collimating lens converting output light of the light source into incident beam of parallel ray; a beam splitter reflecting and providing the incident beam to a measurement target and transmitting first reflection light reflected on a top surface of the measurement target and second reflection light reflected on a bottom surface of the measurement target; an imaging lens disposed between the measurement target and the beam splitter with a predetermined focal distance to receive and provide the incident beam to a measurement position of the measurement target disposed on the focal distance; a camera photographing an interference fringe formed by the first and second reflection lights and outputting an interference fringe image; and a processing part.

Abstract: The present invention pertains to a device and a method for measuring a via hole of a silicon wafer, wherein it is possible to precisely measure the depth of the via hole without damaging the wafer. Broadband infrared light is radiated to a silicon wafer which has a superior light transmission property, so that the depth of the via hole may be measured from the light which is reflected from each boundary surface of the wafer and the interference signal of reference light. The via hole measuring device according to the present invention includes: a light source unit for generating broadband infrared light; and an interferometer for radiating the light generated from the light source unit to a silicon wafer, so as to measure the depth of a via hole formed on the wafer according to the spectrum period of the interference signal of the light, which is reflected from the silicon wafer.

Abstract: Disclosed is a continuous cultivation system for organic ginseng using multilevel cultivation tables, including a facility including: a rainproof plastic roof, a first sun-shading screen placed on the rainproof plastic roof and allows transmission of an adequate amount of sunlight for cultivation of ginseng, and a second sun-shading screen installed at front, back, and left, and right sides of the facility and that allows air to smoothly pass therethrough; a plurality of multilevel cultivation tables that includes three or more levels of cultivation tables each; a water supply device for uniformly supplying water to the cultivation tables; a ventilation window and an air blowing fan installed on a ceiling of the facility to ventilate an upper portion of the facility; and auxiliary light sources installed under all of the cultivation tables except for lowermost cultivation tables.

Abstract: Provided is a spatial phase shifting interferometer using a multi wavelength. More particularly, provided is a spatial phase shifting interferometer using a multi wavelength capable of more rapidly measuring a precise shape of a measurement object by simultaneously oscillating laser having different wavelengths and passing the oscillated laser through a beam splitter and a lens to analyze an interference fringe of the measurement object.

Abstract: Provided are an absolute position measurement method, an absolute position measurement apparatus, and a scale. The scale includes a scale pattern formed by replacing repeatedly arranged pseudo-random-codes with a sequence of a linear feedback shift register of N stages using a first symbol with first width representing a first state and a second symbol with second width representing a second state. The first is divided into two or more first symbol areas of different structures, and the second symbol is divided into two or more second symbol areas of different structures. There is at least one overlap area in which the first symbol and the second symbol overlap each other to have the same structure.

Abstract: Provided are a transparent substrate monitoring apparatus and a transparent substrate monitoring method. The transparent substrate monitoring apparatus includes a light emitting unit emitting light; a double slit disposed on a plane defined in a first direction and a second direction intersecting a propagation direction of incident light and includes a first slit and a second slit spaced apart from each other in the first direction to allow the light to pass therethrough; an optical detection unit measuring an intensity profile or position of an interference pattern formed on a screen plane; and a signal processing unit receiving a signal from the optical detection unit to calculate an optical phase difference or an optical path difference.

Abstract: Provided are a thickness measuring apparatus and a thickness measuring method. The thickness measuring method includes irradiating first laser beam of a first wavelength ?1 to a transparent substrate and measuring intensity of first laser beam transmitting the transparent substrate; irradiating second laser beam of a second wavelength ?2 to the transparent substrate and measuring intensity of second laser beam transmitting the transparent substrate; and extracting a rotation angle on a Lissajous graph using the first and second laser beams transmitting the transparent substrate. A phase difference between adjacent rays by multiple internal reflection of the first laser beam and a phase difference between adjacent ray by multiple internal reflection of the second laser beam is maintained at ?/2.