Abstract: According to one embodiment, an optical apparatus includes at least two light sources, illumination opening portions, and an imaging portion. The illumination opening portions are configured to partially block light emitted from the at least two light sources, respectively, to form illumination light. The imaging portion is configured to image an object using the illumination light. The at least two light sources are disposed at positions facing each other with an optical axis of the imaging portion interposed between the at least two light sources. The illumination light from the at least two light sources is formed to spread like a fan shape toward the object respectively by the illumination opening portions. The fan shape is defined on a reference plane including the optical axis of the imaging portion and on another plane parallel to the reference plane.

Abstract: A nitride light-emitting element includes: a GaN substrate; an n-type semiconductor layer including an n-type nitride-based semiconductor, the n-type semiconductor layer being disposed on the GaN substrate; a p-type semiconductor layer including a p-type nitride-based semiconductor; an active layer including a nitride-based semiconductor containing Ga or In, the active layer being disposed between the n-type semiconductor layer and the p-type semiconductor layer; and a p-type electron barrier layer including Al, the p-type electron barrier layer being disposed between the active layer and the p-type semiconductor layer. The p-type electron barrier layer shows a composition distribution in which a position in a depth direction of the p-type electron barrier layer is taken as a horizontal axis, and a proportion of an Al element in a total amount of group III elements at each position is taken as a vertical axis. The composition distribution has maximum value A1. The maximum value A1 is 46 mol % or more.

Abstract: A fuel cell includes a cell stacked body and a manifold. The cell stacked body has elements stacked, each element having: a fuel electrode and an oxidant electrode between which the electrolyte membrane is interposed; a fuel electrode flow channel plate; and an oxidant electrode flow channel plate. The manifold is provided on a lateral surface, of the cell stacked body, along a stacking direction of the cell stacked body and feeds a reaction gas to the fuel electrode flow channel plate or the oxidant electrode flow channel plate. The manifold includes a gas flow channel part that is provided between a plurality of the cell stacked bodies arranged to line up in a first direction perpendicular to the stacking direction and that allows communication between the cell stacked bodies such that the reaction gas passes through.

Abstract: According to one embodiment, an information processing apparatus is configured to receive powers from a first battery and a second battery, a charge-discharge cycle life of the second battery being longer than the first battery. The information processing apparatus comprises a power-supply circuit and a charging module. The power-supply circuit is configured to discharge the second battery more preferentially than the first battery in order to supply power to the components in the information processing apparatus, when the first battery and the second battery are in a dischargeable state. The charging module is configured to charge the second battery more preferentially than the first battery when the first battery and second battery are not in a fully-charged state.

Abstract: According to one embodiment, an electronic device includes a power supply circuit configured to supply, to a battery, a first charge current for a quick charge and a second charge current for a normal charge smaller than the first charge current, the first charge current and the second charge current being generated from a power from the external power supply, and a controller configured to supply the first charge current to the battery to perform a quick charge when a difference value between a first voltage value of the external power supply wherein the power supply circuit supplies a third charge current smaller than the second charge current to the battery and a second voltage value of the external power supply wherein the power supply circuit does not supply the charge current to the battery is smaller than a threshold.

Abstract: An information processing apparatus according to an embodiment includes: a heat generating body; a temperature sensor configured to detect a temperature of the heat generating body; a battery in the information processing apparatus; an adaptor configured to supply power from an external power source to the battery to charge the battery; and a controller configured to control a charging operation for charging the battery to be performed in one of a rapid charging or a normal charging based on the temperature detected by the temperature sensor and a threshold temperature lower than a rated temperature of the heat generating body while a power of the information processing apparatus is turned off.

Abstract: According to one embodiment, an electronic device includes a power supply circuit configured to supply, to a battery, a first charge current for a quick charge and a second charge current for a normal charge smaller than the first charge current, the first charge current and the second charge current being generated from a power from the external power supply, and a controller configured to supply the first charge current to the battery to perform a quick charge when a difference value between a first voltage value of the external power supply wherein the power supply circuit supplies a third charge current smaller than the second charge current to the battery and a second voltage value of the external power supply wherein the power supply circuit does not supply the charge current to the battery is smaller than a threshold.

Abstract: To render a polymer electrolyte fuel cell and a power-generating system with polymer electrolyte fuel cells, simple, compact and lightweight, the following measures are taken. A plurality of reactant-gas supplying separator are provided, each on at least one surface of each unit cell. Each reactant-gas supplying separator has fuel-gas supplying passages such as grooves in one surface, and oxidizer-gas supplying passages such as grooves in the other surface. Each unit cell comprises a catalyst layer and an electrically conductive, porous water-repellant layer provided at least between the catalyst layer and the grooves. The system comprises water-supplying means for supplying water in liquid state to a fuel-gas inlet section and a water-amount control means for controlling the amount of water to be supplied to the fuel-gas inlet section.

Abstract: Each of gas manifolds which are disposed on the side surfaces of a cell stack 10 is constituted by integrating a plate-like heat insulating member 21 disposed on the outer surface of the cell stack 10 and a heat and phosphoric acid resisting sheet member 20 joined to cover the inner and side surfaces of the heat insulating member 21.