Abstract: A light emitting device of the present invention includes an LED substrate and a sealing resin portion which seals the LED substrate, the sealing resin portion having a silicone resin having a refractive index n3 to which a fluorescent material having a refractive index n1 and fine particles having a refractive index n2 are added. In the light emitting device, a relationship of n2>n1>n3 holds in the refractive indexes n1 to n3, and a particle size of the fine particles is not more than 1/10 of a wavelength of light emitted from the LED substrate.

Abstract: The invention comprises an imaging mechanism, and an LED illuminator which emits illuminating light to an imaging area of the imaging mechanism. The LED illuminator includes a light emitting module having light emitting elements arranged therein, a Fresnel lens which brings light from the light emitting module into parallel rays of light, a pair of lens arrays arranged in a direction of light coming from the light source, the pair of lens arrays shaping the parallel rays of light produced by the Fresnel lens into a rectangle, and an adjustment mechanism which adjusts an interval between the lens arrays in accordance with an imaging area of the imaging mechanism.

Abstract: A display includes pixels each of which contains a light emitting element and which are arranged in a matrix form, a light transmitting insulating layer which includes a back surface facing the light emitting element and a front surface as a light output surface, a beam-condensing element which is arranged on a back side of the insulating layer and increases a directivity of light emitted by the light emitting element to make the light incident on the insulating layer, and a diffusing element which is arranged on a front side of the insulating layer, diffuses light from the insulating layer, and output the diffused light to an external environment.

Abstract: An optical device includes a first waveguide layer in which multiple-beam interference occurs, a second waveguide layer which includes a back surface facing the first waveguide layer and a front surface as a light output surface, and a diffraction grating which is arranged on a back side of the second waveguide layer and faces the first waveguide layer, wherein a grating constant of the diffraction grating is defined such that a first-order diffracted light emerges from the second waveguide layer, the first-order diffracted light being generated when a light component having a highest intensity of light which propagates in an in-plane direction while causing multiple reflection in the first waveguide layer enters the diffraction grating.

Abstract: An optical waveguide type iontophoresis sensor chip has a substrate having a first hinged plate and a second hinged plate, an optical waveguide plate connected to the first hinged plate and positioned over a first opening delineated in the first hinged plate, and a gel layer fixed on the second hinged plate and covering a second opening delineated in the second hinged plate and configured to contact with the optical waveguide plate through the first opening in case that the substrate is folded.

Abstract: An optical device includes a first waveguide layer in which multiple-beam interference occurs, a second wavelength layer which includes a back surface facing the first waveguide layer and a front surface as a light output surface, and an outcoupling layer which is disposed on a back side of the second waveguide layer and faces the first wave guide layer, wherein the outcoupling layer includes a first portion as a layer with light transmission property and second portions which are dispersed in the first portion and differ in optical property from the first portion, and wherein an array of the second portions forms a triangular lattice.

Abstract: A laser beam transmission apparatus comprises a light-incidence optical system (22) converging and focusing a laser beam emitted from a solid-state laser apparatus (1), and an optical fiber (8) which transmits the laser beam that has been converged and focused by the light-incidence optical system. The light-incidence optical system (22) has at least first and second lenses (13, 14) disposed on the same optical path. A first distance (a) between an output end of the solid-state laser apparatus and the first lens or a second distance (b) between the second lens and a light-incidence end of the optical fiber is freely set according to a relational formula based on a focal distance (f1, f2) of each of the first and second lenses.

Abstract: A semiconductor laser light source has a semiconductor laser array having a plurality of light-emitting portions which emit semiconductor laser beams, a collimator lens which collimates each semiconductor laser beam emitted from each light-emitting portion of the semiconductor laser array, and a wedge prism which deflects the optical axis of each semiconductor laser beam transmitted through the collimator lens to be parallel to each other.

Abstract: A laser beam transmission apparatus comprises a light-incidence optical system (22) converging and focusing a laser beam emitted from a solid-state laser apparatus (1), and an optical fiber (8) which transmits the laser beam that has been converged and focused by the light-incidence optical system. The light-incidence optical system (22) has at least first and second lenses (13, 14) disposed on the same optical path. A first distance (a) between an output end of the solid-state laser apparatus and the first lens or a second distance (b) between the second lens and a light-incidence end of the optical fiber is freely set according to a relational formula based on a focal distance (f1, f2) of each of the first and second lenses.

Abstract: A semiconductor laser light source has a semiconductor laser array having a plurality of light-emitting portions which emit semiconductor laser beams, a collimator lens which collimates each semiconductor laser beam emitted from each light-emitting portion of the semiconductor laser array, and a wedge prism which deflects the optical axis of each semiconductor laser beam transmitted through the collimator lens to be parallel to each other.

Abstract: An outer case has an opening portion and a power generation element is held in the outer case and has a positive electrode and negative electrode with a separator interposed. A cover member is joined to the opening portion and the cover member is welded to the outer case with a laser beam. An injection port is formed in the cover member. After an electrolyte has been injected via the injection port into the outer case, a sealing member is pressed in a hermetical way into the injection port and then blocked by a sealing cover welded to the cover member using the laser beam. Furthermore, a pressing member is provided between the power generation element and the inner surface of the cover member wherein one end of the pressing member is receded a predetermined dimension from the injection port.

Abstract: A metallic outer case has an opening portion. A first corner portion is provided at an outer periphery of the opening portion. A power generating element is stored within the outer case. The power generating element has a positive electrode and a negative electrode opposed to each other, with a separator interposed. An end face of the opening portion is sealed by a metallic cover member. The cover member has a second corner portion corresponding to the first corner portion of the outer case, and welded to the outer case, with a coupled portion between the cover member and the outer case irradiated with a laser beam. Those portions of the first corner portion of the outer case and the second corner portion of the cover member, which are irradiated with the laser beam, are shaped as angular portions of substantially the same shape.

Abstract: There is a sealed battery including a battery case having a lid hermetically joined to the opening portion of an outer jacket, and having a structure in which an electrolyte injection hole in the battery case is hermetically sealed with a metal sealing lid. This sealed battery includes a battery case having a structure in which a metal lid is welded to the opening portion of a metal outer jacket, an electric-power generating element housed in the battery case and having a positive electrode and a negative electrode with a separator being sandwiched therebetween, an electrolyte injection hole formed in the battery case to allow an electrolyte to be injected, and a sealing lid made of a metal plate material which is seam-welded to the battery case including the electrolyte injection hole by laser welding. The sealing lid has a weld portion formed by the laser welding to have a closed loop surrounding the electrolyte injection hole so as to be seam-welded to the battery case.