Abstract: The optical device includes a substrate and an optical waveguide formed on the substrate, a protrusion portion is formed on the substrate adjacent to the optical waveguide. Accordingly, an optical device which can achieve further suppression of the light propagation loss and higher reliability is provided.

Abstract: In a first region of a first conversion portion, a length of an upper tapered portion in a third direction continuously increases from a first length at a first end to a second length toward an intermediate position, and a length of a lower tapered portion in the third direction continuously increases from the first length at the first end to a third length, which is longer than the second length, toward the intermediate position. In a second region of the first conversion portion, a length of the upper tapered portion in the third direction continuously increases from the second length at the intermediate position to a fourth length, which is shorter than the third length, toward a second end, and a length of the lower tapered portion in the third direction continuously decreases from the third length at the intermediate position to the fourth length toward the second end.

Abstract: A core layer of an optical element includes a second conversion portion that converts a polarization mode of light from a TE1 mode to a TE0 mode. The second conversion portion includes: a splitting portion that splits the light in the TE1 mode incident from the first conversion portion into first split light in the TE0 mode and second split light in the TE0 mode which are in opposite phases; a coupling portion that couples the first split light that has propagated through a first branch waveguide and the second split light that has propagated through a second branch waveguide to emit the light in the TE0 mode; and a phase adjustment unit that adjusts a phase difference between the first split light and the second split light. The first branch waveguide and the second branch waveguide are arranged in a second direction.

Abstract: An optical element includes a mode converter that converts a polarization mode of visible light. The mode converter includes a conversion unit that converts a polarization mode of the visible light from a TM0 mode to a TE1 mode, and a splitting unit that splits the visible light in the TE1 mode into a first split light in the TE0 mode and a second split light in the TE0 mode, and adjusts a phase difference between the first split light and the second split light. The splitting unit includes a first branch wave guide through which the first split light propagates and a second branch wave guide through which the second split light propagates. An optical path length of the first split light in the first branch wave guide and an optical path length of the second split light in the second branch wave guide are different from each other.

Abstract: A method of manufacturing a battery that includes an electrode containing a current collector and an electrode layer arranged on the current collector, the method including: a first step of forming an electrode layer on a current collector; and a second step of forming a groove in a surface of the electrode layer, wherein the groove is formed by removing a part of the electrode layer by laser irradiation.

Abstract: A battery 10, including an electrode body 30 that includes an electrode and a separator, and an exterior body 20A, 20B that is disposed around the electrode body 30, the battery being restrained by a restraining member, the electrode body 30 having a bonded portion at which the electrode and the separator are bonded to each other, and a non-bonded portion at which the electrode and the separator are not bonded to each other, and at least a part of the non-bonded portion of the electrode body 30 matching a portion of the battery restrained by the restraining member 40.

Abstract: A method for manufacturing a battery, the method including: a first step of preparing an electrode body including a substance that is capable of retaining an electrolytic solution and an electrolytic solution that is retained at the substance; a second step of accommodating the electrode body in an exterior body; and a third step of supplying an electrolytic solution to an interior of the exterior body.

Abstract: An optical circuit element capable of preventing stray light propagated through a part including a substrate of the optical circuit element from being emitted to the outside is provided. The optical circuit element has a substrate, an optical waveguide layer that is formed on one surface of the substrate, and a protective layer that is overlaid on the optical waveguide layer. The optical waveguide layer has an optical waveguide configured for light to be propagated therethrough. A groove portion, which reaches to a position deeper than the one surface from a surface of the protective layer toward the substrate, is formed. The optical circuit element further includes a light absorption layer that covers at least a bottom surface and a side surface of the groove portion.

Abstract: A method for manufacturing a battery, the method including: a first step of preparing an electrode body that includes an electrode containing an electrode active material and a solute of an electrolytic solution; and a second step of causing a solvent of the electrolytic solution to penetrate into the electrode body.

Abstract: A method of manufacturing a separator that is disposed between a positive electrode and a negative electrode, the method including immersing a separator in a liquid that contains a surfactant; and drying the separator that has been removed from the liquid.

Abstract: An electrode body, including a first electrode layer, a second electrode layer, and a separator that is disposed between the first electrode layer and the second electrode layer, the first electrode layer having a projecting portion that projects toward a side of the separator, and the second electrode layer having a recessed portion at a position facing the projecting portion of the first electrode layer.

Abstract: A method of producing a battery, the method including: a first process of disposing an electrode body at an internal space of an exterior body; a second process of supplying an electrolytic solution to the internal space of the exterior body at which the electrode body has been disposed; and a third process of pressurizing the exterior body, to which the electrolytic solution has been supplied, at a portion corresponding to a periphery of the electrode body, the internal space of the exterior body being greater in volume than the electrode body.

Abstract: An electrode body including a current collector, a positive electrode layer, and a separator, in this order, the positive electrode layer comprising positive-electrode active material particles and graphite particles, wherein, when the positive electrode layer is divided into two regions in a thickness direction, a number per unit area of the graphite particles in a separator-side region is greater than a number per unit area of the graphite particles in a current collector-side region.

Abstract: A method for manufacturing a battery includes: a first step of supplying an electrolytic solution to an internal space of an exterior body in which an electrode body is accommodated; and a second step of supplying the electrolytic solution that has been taken out from the internal space of the exterior body, to the internal space of the exterior body, wherein the second step includes removing bubbles contained in the electrolytic solution that has been taken out from the internal space of the exterior body.

Abstract: A method of manufacturing a battery, comprising, a joining step of joining together superposed peripheral edge portions of an exterior body that accommodates an electrode body at an interior thereof, and nipping and welding one end portion of a resin hollow member between the peripheral edge portions; and a supplying step of supplying an electrolytic solution into the interior of the exterior body from a supply path of the hollow member.

Abstract: A method of manufacturing a battery includes disposing, in an internal space of an exterior body 11, an electrode body 12 and a plate 13 that has a groove formed at a surface of the plate 13; and supplying an electrolytic solution 14 to the exterior body 11 so that at least a part of the electrode body and at least a part of the plate are immersed in the electrolytic solution 14.

Abstract: A print head ejecting a liquid with respect to a medium and assembled to a liquid ejecting apparatus includes: an ejecting portion ejecting the liquid by receiving a drive signal; an electrically erasable non-volatile memory; and a wireless communication module, in which history information changing in accordance with an operation state of the print head is stored in the non-volatile memory, and the wireless communication module transmits the history information in accordance with a request from an outside.

Abstract: In the cell case of the power storage cell according to the present disclosure, the cylindrical main body portion is formed by forming a film into a cylindrical shape, and the first opening portion and the second opening portion are formed at both ends thereof, respectively. The first sealing body closes the first opening portion. The second sealing body closes the second opening portion. The first sealing body includes an outer peripheral face that is in contact with an inner peripheral face of the cylindrical main body portion. The outer peripheral face includes a main body surface portion and a protruding portion. The main body surface portion extends in parallel to a first direction in which the first opening portion and the second opening portion are arrayed. The protruding portion protrudes from the main body surface portion toward the cylindrical main body portion.

Abstract: A power storage module includes a case that houses a plurality of electrode assemblies. The case includes a case body and at least one partition portion. The case body surrounds the plurality of electrode assemblies. The partition portion is located between the electrode assemblies adjacent to each other to partition an accommodation space of the case body. The partition portion includes a pair of resin layers and a metal layer. The pair of resin layers is formed integrally with the case body and the resin layers are arranged in a first direction. The metal layer is located between the resin layers and extends in a direction orthogonal to the first direction.

Abstract: A power storage module has a case including a case body and at least one partition portion. The case body surrounds a plurality of electrode assemblies. The partition portion is located between the electrode assemblies adjacent to each other to partition an accommodation space of the case body. In the accommodation space of the case body, the partition portion forms a first compartment and a second compartment adjacent to the first compartment with the partition portion interposed between the first compartment and the second compartment. A first cooling path and a second cooling path are formed in the case, the first cooling path extends in a portion 10 of the case that faces the first compartment without the second compartment in between, and the second cooling path extends in a portion of the case that faces the second compartment without the first compartment in between.