Abstract: To provide a light source unit which can execute a projection with less consumed power and noise and a projector including this light source unit, a light source unit is provided which includes an excitation light source and a luminescent plate which includes a first luminescent light emitting area on which a resin mixed luminescent material layer containing a resin binder is provided and a second luminescent light emitting area on which a luminescent material containing no resin binder is provided, on to which first luminescent light emitting area and second luminescent light emitting area excitation light from the excitation light source is shone.

Abstract: A worm reduction gear that reduces a rotation of a worm and transmits the reduced rotation to a worm wheel includes a casing that houses the worm and the worm wheel, wherein the casing includes: a wheel opposing surface that opposes an end surface of the worm wheel via an interval; and a grease holding recessed portion formed in a recessed shape in the wheel opposing surface, and the grease holding recessed portion is provided in a position opposing a worm meshing portion between the worm and the worm wheel.

Abstract: A projection apparatus includes a light source with light emitting devices of a plurality of colors, a drive unit configured to drive the light emitting devices of the plurality of colors so as to orderly emit single-color light and mixed-color light, an input unit configured to input an image signal, a projection unit configured to form and emit an optical image corresponding to an image signal input by the input unit, using the single-color light and the mixed-color light, and a control unit configured to emit the mixed-color light in a part of a light emission period of the mixed-color light and switch off the light emitting devices during a rest of the part of the light emission period, based on the image signal input by the input unit.

Abstract: An information processing apparatus includes a communication unit, a storage unit, and a control unit. The communication unit is configured to communicate with a plurality of devices. The control unit is configured to control the communication unit to receive a low-quality version of a content from the device, store the received low-quality version in the storage unit with the low-quality version of the content associated with an identifier which is identical with an identifier of the content, thereby registering the content, generate, in response to a request from the device, a content list including a thumbnail generated from the low-quality version, transmit the content list to the device, and when the content instructed to be reproduced by the device is not stored in any device on the basis of the content list, control the communication unit to transmit the low-quality version to the device.

Abstract: Provided is a method of manufacturing a nitrocarburized crankshaft which is obtained by subjecting a bainitic microalloyed steel to a forging and a machining, and further subjecting the bainitic microalloyed steel to at least a strain releasing heat treatment and a subsequent nitrocarburizing treatment, the bainitic microalloyed steel containing, as essentially added elements, in terms of mass %: 0.10% to 0.40% of C; 0.10% to 1.0% of Si; 1.0% to 2.0% of Mn; 0.05% to 0.40% of Mo; and 0.05% to 0.40% of V, and the bainitic microalloyed steel optionally further containing, as arbitrarily added elements, in terms of mass %: 0.01% to 0.1% of S; 0.005% to 0.2% of Ti; 0.001% to 0.03% of Al; 0.50% or less of Cr; 0.5% or less of Cu; and 0.5% or less of Ni, with the balance being Fe and unavoidable impurities.

Abstract: A projection unit projects the optical image formed by the optical image formation unit toward a projection target. A temperature detection unit detects a temperature of each type of the semiconductor light emitting elements during light emission. A measurement unit measures an intensity of light from each type of the semiconductor light emitting elements during light emission. A light emission control unit (a) corrects a measurement result from the measurement unit using a detection result from the temperature detection unit and (b) controls the light emission intensity for each of the semiconductor light emitting elements based on the corrected measurement result.

Abstract: There is provided a light source unit having a light source which emits a laser beam, a plurality of diffusing plates on which the laser beam is incident and which emit the laser beam incident thereon as diffuse light, and a driving mechanism which moves the plurality of diffusing plates, wherein the laser beam from the light source is incident on one diffusing plate of the plurality of diffusing plates, and diffuse light emitted from the one diffusing plate is incident on the other diffusing plate of the plurality of diffusing plates.

Abstract: A light source unit includes an optical wheel having a plurality of segment areas, the segment areas including at least two luminescent material layers having different characteristics and a transmission portion provided in a circumferential direction. The light source unit further includes a rotation driving unit for driving to rotate the optical wheel, an excitation light source for shining light onto the optical wheel, a light emitting element, and a light guiding optical system for collecting a light beam from the optical wheel and a light beam from the light emitting element to a same optical path. The excitation light source is selectively turned on to illuminate the transmission portion or the at least two luminescent material layers, and the light emitting light source is turned on for a period of time during which the excitation light source does not shine the excitation light.

Abstract: A light source unit includes an excitation light source and a luminescent wheel on which luminescent light emitting areas including, on a reflecting surface, red and green luminescent materials which respectively emit light of red and green wavelength band, when receiving excitation light, and a diffuse transmission area which diffuses and transmits excitation light, are aligned end to end in a circumferential direction. An excitation light incident surface of a luminescent material layer of the luminescent wheel has a surface with a plurality of projecting bodies. Regular quadrangular pyramids are arranged thereon in a matrix with outer boundaries of bottom portions of adjacent regular quadrangular pyramids contacting each other. The pyramids rise at a rising angle of at least 30°, and a length of one side of an outer boundary of the bottom portion of the pyramid is between 10 and 100 ?m.

Abstract: A fluorescent substrate includes a base having a reflective surface and a flat bottom surface, and a fluorescent layer disposed on the reflective surface of the base such that the reflective surface of the base directs, outward from the wheel, fluorescence emitted from the fluorescent layer due to its excitation by exciting light. The reflective surface of the base has an array of minute reflective structures formed thereon so as to reflect, outward from the reflective surface, fluorescence emitted substantially parallel to the flat bottom surface of the base from the fluorescent layer.

Abstract: There is provided a light source unit comprising an excitation light shining device for emitting excitation light, a luminescent plate having a luminescent light emitting area on a base material and adapted to emit a luminescent light of a predetermined wavelength band by excitation light from the excitation shining device, two types of light source devices for emitting light of wavelength bands different from that of the light from the luminescent plate, a light guiding optical system for guiding the light from the luminescent plate and the rays from the light sources to a predetermined plane, and a light source control device for controlling the emission from the excitation light shining device and the light sources, wherein a synthetic light or a single-color light are emitted by controlling the emissions from the excitation light shining device and the light sources by the light source control device.

Abstract: A fluorescent substrate includes a base having a reflective surface and a flat bottom surface, and a fluorescent layer disposed on the reflective surface of the base such that the reflective surface of the base directs, outward from the wheel, fluorescence emitted from the fluorescent layer due to its excitation by exciting light. The reflective surface of the base has an array of minute reflective structures formed thereon so as to reflect, outward from the reflective surface, fluorescence emitted substantially parallel to the flat bottom surface of the base from the fluorescent layer.

Abstract: The invention includes an excitation light source, a light distribution adjusting member on which excitation light from the excitation light source is incident, and a luminescent material which emits luminous light of a different wavelength from that of the excitation light by the excitation light which passes through the light distribution adjusting member being shone on thereto, wherein the excitation light source is disposed so that the excitation light is incident on a light incident surface of the light distribution adjusting member at a predetermined angle.

Abstract: There is provided a light source unit including an excitation light source emitting excitation light, and a luminescent member having a transmission portion transmitting excitation light from the excitation light source, a first luminescent material layer placed beside the transmission portion on one side of the luminescent member and a second luminescent material layer placed beside the transmission portion on the other side of the luminescent member, wherein the first luminescent material layer and/or the second luminescent material layer emits luminous light by being excited by the excitation light, and wherein a guiding optical system is provided which shines excitation light which has passed through the transmission portion from the excitation light source on to the first luminescent material layer and causes luminous light emitted from the first luminescent material layer to be incident on the transmission portion.

Abstract: There is provided a light source unit including an excitation light source which emits excitation light, a luminescent material which receives excitation light from the excitation light source to emit luminous light, a diffuse plate on which the luminous light is incident, and a driving device which moves the diffuse plate so as to change an entering position of the luminous light on the diffuse plate.

Abstract: A projection apparatus includes a light source with light emitting devices of a plurality of colors, a drive unit configured to drive the light emitting devices of the plurality of colors so as to orderly emit single-color light and mixed-color light, an input unit configured to input an image signal, a projection unit configured to form and emit an optical image corresponding to an image signal input by the input unit, using the single-color light and the mixed-color light, and a control unit configured to emit the mixed-color light in a part of a light emission period of the mixed-color light and switch off the light emitting devices during a rest of the part of the light emission period, based on the image signal input by the input unit.

Abstract: A fluorescent wheel comprising a base with a reflective surface and a flat bottom surface, and a fluorescent layer disposed on the reflective surface of the base such that the reflective surface of the base directs, outward from the wheel, fluorescence emitted from the fluorescent layer due to its excitation by exciting light. The reflective surface of the base has an array of minute reflective structures formed thereon so as to reflect, outward from the reflective surface, fluorescence emitted substantially parallel to the flat bottom surface of the base from the fluorescent layer.

Abstract: A light source unit includes an optical wheel having a plurality of segment areas, the segment areas including at least two luminescent material layers having different characteristics and a transmission portion provided in a circumferential direction. The light source unit further includes a rotation driving unit for driving to rotate the optical wheel, an excitation light source for shining light onto the optical wheel, a light emitting element, and a light guiding optical system for collecting a light beam from the optical wheel and a light beam from the light emitting element to a same optical path. The excitation light source is selectively turned on to illuminate the transmission portion or the at least two luminescent material layers, and the light emitting light source is turned on for a period of time during which the excitation light source does not shine the excitation light.

Abstract: There is provided a light source unit comprising a luminescent plate having a luminescent light emission portion and a diffuse transmission portion, a first light source which emits light of a wavelength band which can excite the luminescent material, a second light source which emits light of a wavelength band which differs from the luminous light and the light emitted from the first light source, a light guiding optical system which guides light of respective wavelength bands in color emitted from the luminescent plate to a predetermined plane, and a light source control part for controlling individually the emission of light from the first light source and the second light source, wherein the luminescent plate is disposed on optical paths of the first light source and the second light source, wherein a light shining position of light from the first light source and a light shining position of light from the second light source are made to differ from each other on the luminescent plate, and wherein the lig

Abstract: An electric power steering apparatus for assisting steering of a steered wheel. The electric power steering apparatus includes an electric motor with a built-in controller for controlling rotation, a transmission mechanism for transmitting the rotation of the electric motor to the steering shaft, a connector used to pull out wiring from the controller to the outside, a first casing in which the connector and the electric motor are to be mounted and which includes an work hole used for a wire connection operation of the controller and the connector, a lid member for closing the work hole, and a second casing to be fixed to the first casing while housing the transmission mechanism. The second casing including a cover part for covering the lid member in a state fixed to the first casing.