Abstract: An optical multiplexer and an optical multiplexing method capable of multiplexing light of four or more types of wavelengths are provided. An optical multiplexer capable of multiplexing light of a plurality of wavelengths includes a plurality of coupling parts each including a pair of main entrance paths, a pair of main exit paths, and a main coupler arranged between the main entrance paths and the main exit paths, the main coupler causing light entering from the main entrance paths to be coupled and exit from the main exit paths, in which one of the main entrance paths of the coupling parts is joined to one of the main exit paths of anther coupling parts and the main coupler has coupling length different from at least one other main coupler.

Abstract: An optical multiplexer and an optical multiplexing method capable of multiplexing light of four or more types of wavelengths are provided. An optical multiplexer 1 capable of multiplexing light of a plurality of wavelengths includes a plurality of coupling parts 10 each including a pair of main entrance paths 110, 120, a pair of main exit paths 130, 140, and a main coupler 150 arranged between the main entrance paths 110, 120 and the main exit paths 130, 140, the main coupler 150 causing light entering from the main entrance paths 110, 120 to be coupled and exit from the main exit paths 130, 140, in which one of the main entrance paths 110, 120 of the coupling parts 10 is joined to one of the main exit paths 130, 140 of anther coupling parts 10, and the main coupler 150 each has coupling characteristics different from those of at least one other main coupler 150.

Abstract: Provided is an airbag device including an airbag body having a first base fabric and a second base fabric, wherein the first base fabric and the second base fabric have an outer circumferential section and an outer circumferential section that are joined to each other while overlapping each other, a first base fabric joining section formed by joining a plurality of predetermined portions, spaced apart from each other in a circumferential direction of the first base fabric is provided on an outer circumferential side of the first base fabric, and a second base fabric joining section formed by joining a plurality of predetermined portions, spaced apart from each other in a circumferential direction of the second base fabric is provided on an outer circumferential side of the second base fabric.

Abstract: Provided is an airbag device including an airbag body having a first base fabric and a second base fabric, wherein the first base fabric and the second base fabric have an outer circumferential section and an outer circumferential section that are joined to each other while overlapping each other, a first base fabric joining section formed by joining a plurality of predetermined portions, spaced apart from each other in a circumferential direction of the first base fabric is provided on an outer circumferential side of the first base fabric, and a second base fabric joining section formed by joining a plurality of predetermined portions, spaced apart from each other in a circumferential direction of the second base fabric is provided on an outer circumferential side of the second base fabric.

Abstract: An air bag apparatus includes: an inflator that generates a gas when an impact is input; a main bag part that is supplied with the gas from the inflator and is inflated and expanded; a supplementary bag part that is connected to the main bag part and that is supplied with the gas via a plurality of communicating parts from an inside of the main bag part and is inflated and expanded; and a sheet member that is fixed to an inner surface of the supplementary bag part, that covers the entirety of the plurality of communicating parts, and that is formed to be capable of approaching and being separated from a portion between the plurality of communicating parts in the inner surface of the supplementary bag part.

Abstract: An airbag apparatus for vehicle includes: an airbag body formed by joining outer peripheral portions of two base cloths, the two base cloths being superimposed on each other; an inflator introducing gas to an inside of the airbag body; and a vent hole formed on the airbag body and configured of a slit, the vent hole communicating between the inside and an outside of the airbag body, the slit being formed so as to be directed from the outer peripheral portions toward central portions of the two base cloths over the two base cloths.

Abstract: An airbag apparatus for vehicle includes: an airbag body formed by joining outer peripheral portions of two base cloths, the two base cloths being superimposed on each other; an inflator introducing gas to an inside of the airbag body; and a vent hole formed on the airbag body and configured of a slit, the vent hole communicating between the inside and an outside of the airbag body, the slit being formed so as to be directed from the outer peripheral portions toward central portions of the two base cloths over the two base cloths.

Abstract: An airbag including first and second sheets joined along outer peripheral parts. The second sheet includes a plurality of base cloths. The plurality of base cloths are arrayed around the circumferential direction, and include overlapping parts where adjacent ends are overlapping. At least one of the overlapping parts includes unjoined sections that are not joined together, and the gas inside the airbag can be ejected through the unjoined sections.

Abstract: An air bag system for a vehicle includes an air bag body formed by stitching base fabric material, an inflator that charges the air bag body with gas, and a vent hole that is a through hole provided in the air bag body so as to communicate the inside with the outside of the air bag body. The vent hole of the air bag body is formed to be slit-like and longer in a longitudinal direction thereof. The air bag body includes two base fabric pieces having overlapping side ends that are joined together, a tensile-force applying mechanism that applies tensile-force in the longitudinal direction of the vent hole, including a pair of V-shaped stitched lines bent in a sharply angled V-shape and formed on the side ends of the two base fabric pieces with a predetermined distance therebetween that defines the slit-like vent hole, and portions of the side ends aligned with vent hole along the gas discharge direction form a flow-passage restriction membrane.

Abstract: An airbag including first and second sheets joined along outer peripheral parts. The second sheet includes a plurality of base cloths. The plurality of base cloths are arrayed around the circumferential direction, and include overlapping parts where adjacent ends are overlapping. At least one of the overlapping parts includes unjoined sections that are not joined together, and the gas inside the airbag can be ejected through the unjoined sections.

Abstract: An air bag system for a vehicle includes an air bag body formed by stitching base fabric material, an inflator that charges the air bag body with gas, and a vent hole that is a through hole provided in the air bag body so as to communicate the inside with the outside of the air bag body. The vent hole of the air bag body is formed to be slit-like and longer in a longitudinal direction thereof The air bag body includes two base fabric pieces having overlapping side ends that are joined together, a tensile-force applying mechanism that applies tensile-force in the longitudinal direction of the vent hole, including a pair of V-shaped stitched lines bent in a sharply angled V-shape and formed on the side ends of the two base fabric pieces with a predetermined distance therebetween that defines the slit-like vent hole, and portions of the side ends aligned with vent hole along the gas discharge direction form a flow-passage restriction membrane.

Abstract: A vehicle airbag device in which an airbag is deployed by gas emitted by an inflator. The airbag has a pocket part, which is formed in a lower surface of the airbag and passes over an upper end of an obstacle. An introduction tube for introducing gas emitted by the inflator into the airbag extends into the airbag. When the airbag is deploying, but an obstacle prevents the airbag from doing so, a distal end part of the introduction tube will be blocked off, and the gas will be released to the exterior through a gas release part.

Abstract: The present invention preferably regulates discharge rate of the gas filling the air bag body from the vent hole provided in the air bag body. There is provided a bend section for applying tensile-force onto the pair of the faces to pull the faces in the longitudinal direction apart from the vent hole. When predetermined tensile-force is applied onto the pair of the faces, the faces become closed and sealed. Meanwhile, when smaller tensile-force than the predetermined tensile-force is applied, the pair of the faces become apart from each other and opened, so that the gas is discharged from this opening of the faces.

Abstract: A vehicle airbag device in which an airbag is deployed by gas emitted by an inflator. The airbag has a pocket part, which is formed in a lower surface of the airbag and passes over an upper end of an obstacle. An introduction tube for introducing gas emitted by the inflator into the airbag extends into the airbag. When the airbag is deploying, but an obstacle prevents the airbag from doing so, a distal end part of the introduction tube will be blocked off, and the gas will be released to the exterior through a gas release part.

Abstract: An airbag device for a vehicle includes an airbag that can be inflated to restrain an occupant of the vehicle against the impact of a collision, an inflator for generating gas to inflate the airbag, and a guide passage provided between the inflator and the airbag for guiding the gas into the airbag. The airbag has at least one opening formed therein to provide a fluid communication between the interior and exterior of the airbag, the opening being disposed near the guide passage to perform an aspiratory function efficiently.

Abstract: An airbag device for a vehicle includes an airbag that can be inflated to restrain an occupant of the vehicle against the impact of a collision, an inflator for generating gas to inflate the airbag, and a guide passage provided between the inflator and the airbag for guiding the gas into the airbag. The airbag has at least one opening formed therein to provide a fluid communication between the interior and exterior of the airbag, the opening being disposed near the guide passage to perform an aspiratory function efficiently.

Abstract: An airbag device for a vehicle includes an airbag that can be inflated to restrain an occupant of the vehicle against the impact of a collision, an inflator for generating gas to inflate the airbag, and a guide passage provided between the inflator and the airbag for guiding the gas into the airbag. The airbag has at least one opening formed therein to provide a fluid communication between the interior and exterior of the airbag, the opening being disposed near the guide passage to perform an aspiratory function efficiently.

Abstract: A seat belt device includes a shoulder belt portion for restraining the front portion of the upper half of the body of a passenger seated in an associated seat, a lap belt portion for restraining the thighs of the passenger, and a thigh belt portion which extends across a seat cushion of the associated seat so as to be disposed under the thighs of the passenger in use, and which is provided for restraining the thighs of the passenger together with the lap belt portion.

Abstract: In an air bag system in which an air bag is placed under an upper surface of an instrument panel for restraining a passenger by igniting an inflator by a signal from an acceleration sensor when a vehicle is crashed and deploying the air bag with gas generated by the ignition of the inflator, a method for forming a pocket in a lower surface of the air bag when it is inflated.

Abstract: A seat belt device includes a shoulder belt portion for restraining the front portion of the upper half of the body of a passenger seated in an associated seat, a lap belt portion for restraining the thighs of the passenger, and a thigh belt portion which extends across a seat cushion of the associated seat so as to be disposed under the thighs of the passenger in use, and which is provided for restraining the thighs of the passenger together with the lap belt portion.