Abstract: A paper feeding device in an embodiment includes a roll-paper storing unit, a curl rectifying unit, and a cutting unit. The roll-paper storing unit is capable of storing roll paper. The curl rectifying unit is disposed on a downstream side of the roll-paper storing unit in a conveying direction of a sheet let out from the roll paper and rectifies a curl of the sheet. The cutting unit is disposed on the downstream side of the curl rectifying unit in the conveying direction and cuts the sheet.

Abstract: The disclosure relates to a light source device including a solid-state light source, a collimator lens that receives a light beam emitted from the solid-state light source, and a beam width expansion element adapted to expand a beam width of the light beam from the collimator lens.

Abstract: An illuminator includes a light source apparatus that outputs light, a light collecting system on which the light is incident, and a diffuser element on which the collected light flux having exited out of the light collecting system is incident. The light includes a first light beam flux that occupies an area including the optical axis of the light collecting system and a second light beam flux that occupies the area outside the first light beam flux. The position where the first light beam flux is focused in the direction of the optical axis by the light collecting system differs from the position where the second light beam flux is focused in the direction of the optical axis by the light collecting system.

Abstract: An illumination device is provided with a light source device including a first light-emitting element that emits a first pencil of rays, and a light shaping optical system including a first lens surface on which the first pencil of rays is incident. The first lens surface has a first free-form surface represented by Expression (1) in which x and y are used as variables. In Expression (1), in a case where h is set to a positive integer, the coefficient Cj of the x2h term is different from the coefficient Cj of the y2h term.

Abstract: The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P1) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P1) on a first sheet (S11) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (113A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P1), and an impregnation step for pressing a fiber bundle group (F1) and the paste (P1) on the first sheet (S11) and impregnating the paste (P1) between the fiber bundles (CF).

Abstract: An optical modulator element includes first and second optical modulators, an optical input terminal, and a branch coupler. Each of the first and second optical modulators includes a pair of Mach-Zehnder waveguides, a first optical coupler to split rays from the branch coupler into the pair of Mach-Zehnder waveguides, and a second optical coupler to combine rays transmitted through the pair of Mach-Zehnder waveguides. The first and second optical modulators are disposed in such a manner that a traveling direction of rays propagating through the pair of Mach-Zehnder waveguides of the first optical modulator and a traveling direction of rays propagating through the pair of Mach-Zehnder waveguides of the second optical modulator are angled toward each other.

Abstract: A wavelength conversion element according to an aspect of the invention includes a wavelength conversion layer having a light incident surface on which excitation light is incident and a light exiting surface that faces away from the light incident surface and a cooler including a support member that supports the wavelength conversion layer and a light transmissive member that has a curved surface that protrudes in the direction opposite the direction in which the excitation light travels, faces the light incident surface of the wavelength conversion layer, and is bonded to the support member via a bonding member. An air layer provided between the light incident surface of the wavelength conversion layer and the light transmissive member, and the air layer is thinner than the bonding member.

Abstract: An illumination device includes: a light source device that emits first light including laser light; a wavelength conversion element that includes a light-exiting surface and converts a portion of the first light into fluorescence; and a light diffusion element that is provided on the light-exiting surface. The wavelength conversion element is configured to emit second light including at least a portion of the laser light and the fluorescence from the light-exiting surface.

Abstract: The invention relates to a light source device including a solid-state light source, a collimator lens which a light beam emitted from the solid-state light source enters, an afocal optical system which includes a light collecting optical system and a collimating optical system and which the light beam having been transmitted through the collimator lens enters, a lens integrator which the light beam having been transmitted through the afocal optical system enters, a polarization splitting element which the light beam having been transmitted through the lens integrator enters, and a wavelength conversion element which a first polarization component split by the polarization splitting element from the light beam enters. At least one of the light collection optical system and the collimating optical system includes a lens formed of quartz.

Abstract: An illumination device (100) includes a solid-state light source device (10), a pickup lens unit (20) on which light from the solid-state light source device is incident, and a polarization conversion element (40). A lens (22) constituting the light exit surface of the pickup lens unit (20) is an aspherical lens having a light exit surface shaped like a rotationally symmetric shape centered on a light axis (40ax) when viewed from a direction of the light axis (40ax), and having a cross-section of an aspherical shape when cut with a plane parallel to the light axis (40ax). The light exit surface of the aspherical lens has a function of collimating and then emitting the light having been emitted from the center of the solid-state light source device (10) in an area near to the light axis (40ax), and emitting the light so as to converge toward the light axis in an area far from the light axis (40ax).

Abstract: A light source apparatus according to an aspect of the invention includes a first light source section that includes a first solid-state light source that emits excitation light, a second light source section that includes a second solid-state light source that emits red light and a third solid-state light source that emits blue light and outputs color light containing the red light and the blue light, and a rotor irradiated with the excitation light and the color light. The rotor is provided with a phosphor section that emits fluorescence when irradiated with the excitation light and a diffuser section that diffuses the color light and outputs the diffused color light with the phosphor section and the diffuser section provided along the direction of rotation of the rotor.

Abstract: The invention relates to a wavelength conversion element including: a substrate including a light-reflecting surface and rotatable around an axis of rotation; and a wavelength conversion layer supported by the light-reflecting surface. The wavelength conversion layer has a distribution of reflectance, along a circle centered on the axis of rotation, with respect to excitation light to excite the wavelength conversion layer. An average reflectance of the wavelength conversion layer with respect to the excitation light per the circle varies depending on a radius of the circle.

Abstract: A light source apparatus, an illuminator, and a projector that output a reduced light beam flux in a direction roughly the same as the direction of the optical axis of an incident light beam flux. The light source apparatus includes a light source unit that outputs a light beam flux and a reduction system that includes a plurality of optical elements and reduces the cross section of the light beam flux.

Abstract: The invention relates to a wavelength conversion element including: a base material including a light-reflecting surface; a dichroic film; and a wavelength conversion layer provided between the light-reflecting surface and the dichroic film. The dichroic film reflects portion of light in a wavelength band that the wavelength conversion layer absorbs, and has a reflectance distribution, with respect to the light along a predetermined direction.

Abstract: Provided is a technique for reducing, using a simple circuit configuration, an amplitude difference between electric signals that are input to respective optical waveguide arms. An optical modulator includes: an optical demultiplexer that splits continuous wave light as received; first and second optical waveguide arms through which the continuous wave light as split propagates; an optical phase ? shifter that introduces a phase shift of ? to the continuous wave light as split; an optical multiplexer combines the continuous wave light propagating through the first and second optical waveguide arms; first and second signal electrodes that respectively input the electric signals to the first and second optical waveguide arms; a junction capacitance connected in shunt to at least one of the first and second signal electrodes; and a DC voltage source that applies a DC voltage to the junction capacitance.

Abstract: A light source device, an illumination device, and a projector which are capable of thinning a bundle of light beams while being low in a focal magnification ratio, and are small in size are to be provided. The light source device includes a first light source unit adapted to emit a first light beam, a second light source unit adapted to emit a bundle of light beams including a second light beam and a third light beam, a reduction optical system adapted to reduce the bundle of light beams, and a combining optical system adapted to combine the first light beam and the reduced bundle of light beams with each other. The combining optical system is provided with a light transmitting area and a light reflecting area.

Abstract: An illuminator includes a first light source unit that outputs first light beams and a second light source unit that outputs second light beams. A polarization combining element combines the first and second light beams with each other. A polarization state conversion element which receives the combined light includes retardation elements that are separate from one another and arranged in a first direction. The light source units are so configured that first regions through which the first light beams pass and second regions through which the second light beams pass are alternately arranged in the first direction in the polarization state conversion element. A polarization separation element separates the combined light having passed through the polarization state conversion element into first light and second light. A wavelength conversion element converts the first light into third light. The illuminator outputs the second light and the third light.

Abstract: A test design assistance device 10 acquires information about the number of levels indicating the number of values which can be obtained for each factor in a plurality of factors of a test target, selects a matrix capable of allocating all of factors in a maximum number of levels information in the matrix capable of allocating factors in multilevel generated based on an orthogonal table, sets the maximum number of the number of levels in the levels of factors which are not allocated as a focused number of levels, and allocates factors in the focused number of levels to the matrix when the number of columns capable of allocating the factors in the focused number of levels is equal to greater than the number of factors in the focused number of levels, in the selected matrix.

Abstract: An optical waveguide interferometer that includes a first optical section, a second optical section, and a set of optical waveguides configured to connect the first and second optical sections, such that light propagating between the first optical section and the second optical section passes through each optical waveguide in the set, wherein the set of optical waveguides includes a first optical waveguide having a first length and a first width and a second optical waveguide having a second length and a second width, wherein the second length is greater than the first length, and the second width is greater than the first width.

Abstract: A light source apparatus includes a first light source unit including a first light emitting device, a second light source unit including second and third light emitting devices, a light beam conversion system, and a light ray combiner. The first, second, and third light emitting devices emit first, second, and third light beams, respectively. The combiner has first, second, and third areas which these light beams enter, respectively. One of the light beams is a specific light beam. The direction in which the second and third areas are arranged is a third direction. The conversion system converts the specific light beam such that the dimension of the specific light beam in the third direction at a stage in which the specific light beam enters the combiner is smaller than that at a stage in which the specific light beam exits the conversion system.