Abstract: The disclosure provides a detection device, a detection method, and a recording medium. The detection device includes: an acquisition unit for acquiring the temperature of a solder in a solder bath; a measurement unit for measuring the melting point of the solder from a temporal change in temperature in at least one of a temperature increasing process and a temperature decreasing process; and a detection unit for detecting variation in the copper concentration of the solder on the basis of variation in the melting point.

Abstract: A light guide includes a core made of material having translucency and an optical path conversion mirror for reflecting the signal light from the optical element and converting the optical path of the signal light formed on at least the core. The signal light is transmitted through the core by the reflection at the optical path conversion mirror. The optical path conversion mirror surface has an inclination angle ? formed with a bottom surface of the core changing in the X-direction in a cross-sectional shape in which the core is cut at a YZ plane, the Y-direction being an optical axis direction of the optical element, the Z-direction being an advancing direction of the signal light of the light guide, and the X-direction being a direction perpendicular to both the Y-direction and the Z-direction.

Abstract: A method for producing the optical coupler includes mounting a first conversion element on an upper surface of a first terminal plate, mounting a second conversion element on an upper surface of a second terminal plate, supplying a translucent primary mold resin in a fluidized state to the upper surfaces of the first terminal plate and the second terminal plate such that the first conversion element and the second conversion element are covered with the primary mold resin, curing the primary mold resin while inverting vertically the first terminal plate and the second terminal plate to retain the primary mold resin in a state in which the primary mold resin hangs from the first terminal plate and the second terminal plate, and covering a surface of the primary mold resin with a secondary mold resin having a refractive index lower than that of the primary mold resin.

Abstract: A light guide includes a core made of material having translucency and an optical path conversion mirror for reflecting the signal light from the optical element and converting the optical path of the signal light formed on at least the core. The signal light is transmitted through the core by the reflection at the optical path conversion mirror. The optical path conversion mirror surface has an inclination angle ? formed with a bottom surface of the core changing in the X-direction in a cross-sectional shape in which the core is cut at a YZ plane, the Y-direction being an optical axis direction of the optical element, the Z-direction being an advancing direction of the signal light of the light guide, and the X-direction being a direction perpendicular to both the Y-direction and the Z-direction.

Abstract: A method for producing the optical coupler includes mounting a first conversion element on an upper surface of a first terminal plate, mounting a second conversion element on an upper surface of a second terminal plate, supplying a translucent primary mold resin in a fluidized state to the upper surfaces of the first terminal plate and the second terminal plate such that the first conversion element and the second conversion element are covered with the primary mold resin, curing the primary mold resin while inverting vertically the first terminal plate and the second terminal plate to retain the primary mold resin in a state in which the primary mold resin hangs from the first terminal plate and the second terminal plate, and covering a surface of the primary mold resin with a secondary mold resin having a refractive index lower than that of the primary mold resin.

Abstract: Disclosed is a gas turbine enabling turn down operation, of which the system and the operation can be simplified, and also the production cost and the maintenance cost can be reduced. Specifically disclosed is a gas turbine comprising: a compressor section (2); a combustor section (3); a turbine section (4); a gas turbine casing which houses the compressor section (2), the combustor section (3), and the turbine section (4) therein; a stator cooling air system (5) for leading compressed air extracted from midstream of the compressor section (2) into stator vanes which constitute the turbine section (4); and an air bleeding system (6) for extracting compressed air from the exit of the compressor section (2) to the outside of the gas turbine casing, wherein midstream of the stator cooling air system (5) and midstream of the air bleeding system (6) are connected via a connecting path (12), and at midstream of this connecting path (12), there is a flow rate control part (13) connected.

Abstract: An object of the present invention is to provide a cartridge-type coating machine having a coating device for spraying paint, to which a simple, light and inexpensive cartridge for storing paint therein and for supplying the paint to the coating device is detachably attached. In a coating machine 11, a coating device having a rotary atomizing head 14 and the like is disposed at a front part of a housing 12, and a cartridge 21, in which paint is stored, is detachably attached to a rear part of the housing 12. Paint in the cartridge 21 is supplied to the rotary atomizing head 14 by pressurizing the cartridge 21 by liquid fluid, and a pressure solvent storage chamber 18b for storing the liquid fluid is formed by the housing 12 and the cartridge 21.

Abstract: An object of the present invention is to provide a cartridge-type coating machine having a coating device for spraying paint, to which a simple, light and inexpensive cartridge for storing paint therein and for supplying the paint to the coating device is detachably attached. In a coating machine 11, a coating device having a rotary atomizing head 14 and the like is disposed at a front part of a housing 12, and a cartridge 21, in which paint is stored, is detachably attached to a rear part of the housing 12. Paint in the cartridge 21 is supplied to the rotary atomizing head 14 by pressurizing the cartridge 21 by liquid fluid, and a pressure solvent storage chamber 18b for storing the liquid fluid is formed by the housing 12 and the cartridge 21.