Abstract: A laser module includes a laser light source, a package in which the laser light source is housed and a light transmission window through which laser light output from the laser light source can be optically transmitted is provided on a wall portion, and an output light aperture provided inside or outside of the package and arranged in a traveling direction of the laser light to adjust an area of a passage port of the laser light.

Abstract: This optical coupler for coupling a plurality of visible light beams having different wavelengths includes: a substrate made of a material different from lithium niobate; and an optical coupling function layer formed on a main surface of the substrate. The optical coupling function layer includes: two multimode-interference-type optical coupling parts; optical-input-side waveguides and an optical-output-side waveguide connected to one multimode-interference-type optical coupling part, and optical-input-side waveguides and an optical-output-side waveguide connected to the other multimode-interference-type optical coupling part. The multimode-interference-type optical coupling parts, the optical-input-side waveguides, and the optical-output-side waveguides are made of a lithium niobate film.

Abstract: This optical waveguide detection element includes a substrate, an optical waveguide layer formed on the substrate, and a photodetector. The optical waveguide layer includes a first optical waveguide in which visible light having a wavelength of 380 nm to 800 nm propagates, a second optical waveguide in which near-infrared light having a wavelength of 801 nm to 2000 nm propagates, and a third optical waveguide in which light propagates to a light receiving surface of the photodetector. A visible light output port of the first optical waveguide from which the visible light is output, a near-infrared light output port of the second optical waveguide from which the near-infrared light is output, and a reflected light input port of the third optical waveguide to which the near-infrared light is reflected and returned are arranged on one end surface of the optical waveguide layer.

Abstract: A gas mixture containing a fuel, water and air is supplied to one end of a reforming room, and a reformed gas containing hydrogen is discharged from the other end thereof. Two or more such reforming units are connected in series, and the upstream part of each reforming room is filled with a first catalyst which catalyzes a partial oxidation reaction in an oxygen-rich environment, and the downstream part is filled with a second catalyst which performs the reforming reaction. The gas mixture which has been heated in a heating unit passes through a distribution tube and is distributed evenly to the reforming units. The reforming room is composed of a reforming tube in which a reforming catalyst is charged, or two or more such reforming tubes, parallel to each other. After being reformed the high-temperature reformed gas is passed around the reforming tubes, and fed back to a manifold.

Abstract: A gas mixture containing a fuel, water and air is supplied to one end of a reforming room, and a reformed gas containing hydrogen is discharged from the other end thereof. Two or more such reforming units are connected in series, and the upstream part of each reforming room is filled with a first catalyst which catalyzes a partial oxidation reaction in an oxygen-rich environment, and the downstream part is filled with a second catalyst which performs the reforming reaction. The gas mixture which has been heated in a heating unit passes through a distribution tube and is distributed evenly to the reforming units. The reforming room is composed of a reforming tube in which a reforming catalyst is charged, or two or more such reforming tubes, parallel to each other. After being reformed the high-temperature reformed gas is passed around the reforming tubes, and fed back to a manifold.

Abstract: A gas mixture containing a fuel, water and air is supplied to one end of a reforming room, and a reformed gas containing hydrogen is discharged from the other end thereof. Two or more such reforming units are connected in series, and the upstream part of each reforming room is filled with a first catalyst which catalyzes a partial oxidation reaction in an oxygen-rich environment, and the downstream part is filled with a second catalyst which performs the reforming reaction. The gas mixture which has been heated in a heating unit passes through a distribution tube and is distributed evenly to the reforming units. The reforming room is composed of a reforming tube in which a reforming catalyst is charged, or two or more such reforming tubes, parallel to each other. After being reformed the high-temperature reformed gas is passed wound the reforming tubes, and fed back to a manifold.

Abstract: A gas mixture 2 containing a fuel, water and air is supplied to one end of a reforming room 6, and a reformed gas 4 containing hydrogen is discharged from the other end thereof. Two or more such reforming units are connected in series, and the upstream part of each reforming room is filled with a first catalyst 8a which catalyzes a partial oxidation reaction in an oxygen-rich environment, and the downstream part is filled with a second catalyst 8b which performs the reforming reaction. The gas mixture 102 which has been heated in a heating unit 104 passes through a distribution tube 108 and is distributed evenly to the reforming units 114. The reforming room is composed of a reforming tube 130 in which a reforming catalyst 112 is charged, or two or more such reforming tubes, parallel to each other. After being reformed the high-temperature reformed gas 118 is passed around the reforming tubes, and fed back to a manifold 116.

Abstract: A gas mixture 2 containing a fuel, water and air is supplied to one end of a reforming room 6, and a reformed gas 4 containing hydrogen is discharged from the other end thereof. Two or more such reforming units are connected in series, and the upstream part of each reforming room is filled with a first catalyst 8a which catalyzes a partial oxidation reaction in an oxygen-rich environment, and the downstream part is filled with a second catalyst 8b which performs the reforming reaction. The gas mixture 102 which has been heated in a heating unit 104 passes through a distribution tube 108 and is distributed evenly to the reforming units 114. The reforming room is composed of a reforming tube 130 in which a reforming catalyst 112 is charged, or two or more such reforming tubes, parallel to each other. After being reformed the high-temperature reformed gas 118 is passed around the reforming tubes, and fed back to a manifold 116.

Abstract: An air supply device for a fuel cell is disclosed which is provided with a displacement compressor (10) for supplying pressurized air as an air source to a cathode through an air supply line connected to the cathode inlet side of the fuel cell (I) so that a burned gas obtained by burning an anode exhaust gas (AG) discharged from an anode of the fuel cell may be conducted to the intake side of an exhaust gas turbine (8) for driving the displacement compressor, and so that air may be supplied to the cathode (2) by driving the displacement compressor (10) with the exhaust gas turbine that operates with the burned gas of the anode exhaust gas. A heat exchanger (22) vaporizes fuel fed to the anode of the fuel cell. The heat exchanger takes in exhaust gas from the turbine and outputs a high temperature exhaust gas, which is conducted to the intake of the turbine.

Abstract: An air supply device for a fuel cell is disclosed which is provided with a displacement compressor 10 for supplying pressurized air as an air source to a cathode through an air supply line connected to the cathode inlet side of the fuel cell I so that a burned gas obtained by burning an anode exhaust gas AG discharged from an anode of the fuel cell may be conducted to the intake side of an exhaust gas turbine 8 for driving the displacement compressor, and so that air may be supplied to the cathode 2 by driving the displacement compressor 10 with the exhaust gas turbine that operates with the burned gas of the anode exhaust gas.

Abstract: A pressure equalizer for use for storing, generating and dispensing gas from substantially thin walled tanks at great depth beneath the sea has a gas generating tank contains a low-temperature, liquified gas which upon the application of heat generates a high-pressure gas which is stored in a gas storage tank into and out of which sea water freely flows through the bottom. A gas supply line is connected at one end by branches to the tops of the respective tanks and at the other end to a device utilizing gas generated in the gas generating tank.