Abstract: A light source apparatus comprises a beam flux conversion optical system for making all the light emitting areas conjugate to one geometrical-optical output image, all the solid light emitting elements being in series connected to each other and fixed to a heat sink to be insulated to one another, circuits on the input and output sides of an electric supply circuit being not insulated, the electric supply circuit including an interface circuit for receiving a modulation amount specifying signal from a host circuit, wherein a ratio of ON time to a switching cycle of the switch element is controlled in a feedback manner so that a difference between current values indicated by the output current signal and a target current signal may become small, and the interface circuit generating analog quantity correlated to the amount of modulation specified by a modulation amount specifying signal through a data insulation transmission unit.

Abstract: A technology capable of improving the production yield of molded articles. A film is supplied to a die surface of a resin molding die set. Next, the film is adhered to the die surface and caused to be in a state of being separated from the die surface at a corner section of a cavity recess. Next, a die set is closed to clamp the film. Next, a resin filling the interior of the cavity recess is thermoset, on the film provided therebetween, while adhering the film to the corner section.

Abstract: A discharge lamp lighting apparatus for lighting a discharge lamp in which an electric discharge medium, which contains xenon, is enclosed in an electric discharge container, and a pair of cathode electrode and anode electrode for main discharge is arranged to face each other, comprises a starter for generating dielectric breakdown in the electric discharge container of a discharge lamp, and a power supply circuit for supplying discharge current to the discharge lamp, wherein the power supply circuit has an output current modulation circuit for modulating the magnitude of current passed through the discharge lamp in at least a lighting steady state, according to a modulation signal, and wherein the output current modulation circuit controls speed of change so as to be 2.6 A or less per millisecond in case the magnitude of the lamp current per square millimeter in a cross section of the cathode electrode decreases.

Abstract: The present invention provides a polyamide resin composition comprising (A) a polyamide resin, (B) an aluminic acid metal salt, and (C) an organic acid, wherein the content of the aluminic acid metal salt (B) is larger than 0.6 parts by mass based on 100 parts by mass of the polyamide resin (A).

Abstract: The light source device is provided with a plurality of light emitting elements including light emitting elements whose emission wavelength belongs to a plurality of types of different wavelength bands, band light characteristics acquisition means generating band light characteristics acquisition data for each wavelength band, and an integrating control circuit generating a color phase instruction value and performing feedback control of a drive circuit of the light emitting element such that a difference between the color phase instruction value and the target value thereof is reduced. The integrating control circuit obtains, through an interface section, color phase correlation data correlated with a color phase instruction value with respect to the result of applying the output luminous flux to an external apparatus using the light source device and updates a target value of the color phase instruction value with the use of the color phase correlation data.

Abstract: To avoid accelerated progression of deterioration of a semiconductor laser, an LED, and the like to extend their lives while adjusting a balance of a plurality of colors, such as R, G, and B, by feedback control, a deterioration controllable monochromatic light source module is configured to: calculate a substantial upper limit Iu, determine an operation coefficient hx based on a deterioration coefficient dx, perform feedback control of the output current Ix of each drive circuit, and output a light intensity detection signal to the outside. An integrating control circuit calculates a monochromatic light intensity sum ? by a sum of light intensity detection signals from the monochromatic light source modules belonging to the same wavelength band and determines a light intensity target signal so that a ratio of the monochromatic light intensity sum ? to the monochromatic light source modules in different wavelength bands is a predetermined ratio.

Abstract: Provided are a coherent light source apparatus and a projector. A first light emission region is formed on basis of a coherent light source; a first optical system projects light derived from a first light emission region to form a second light emission region; a light deflection section deflects a bundle of rays in vicinity of the second light emission region; a second optical system downstream of the light deflection section; and a light mixing section downstream of the second optical system that mixes components of angles and positions of rays incident on an incident end. The second optical system forms an image conjugate to the first light emission region and a third light emission region substantially conjugate to an exit pupil of the first optical system. The light deflection section continues to cause a direction in which the bundle of rays is deflected to be continuously changed.

Abstract: To avoid accelerated progression of deterioration of a semiconductor laser, an LED, and the like to extend their lives while adjusting a balance of a plurality of colors, such as R, G, and B, by feedback control, a deterioration controllable monochromatic light source module is configured to: calculate a substantial upper limit Iu, determine an operation coefficient hx based on a deterioration coefficient dx, perform feedback control of the output current Ix of each drive circuit, and output a light intensity detection signal to the outside. An integrating control circuit calculates a monochromatic light intensity sum ? by a sum of light intensity detection signals from the monochromatic light source modules belonging to the same wavelength band and determines a light intensity target signal so that a ratio of the monochromatic light intensity sum ? to the monochromatic light source modules in different wavelength bands is a predetermined ratio.

Abstract: A vehicle driving assistance apparatus installed in a vehicle displays a predetermined light pattern on a road surface around an own vehicle. The vehicle driving assistance apparatus includes a coherent light source that emits a light source beam, a road surface projection optical system that scans the light source beam and emits the projection beam, a road surface presence information retention section and a control circuit. The control circuit stops the projection beam toward the position where the road surface is absent.

Abstract: A vehicle driving assistance apparatus includes a coherent light source, a road surface projection optical system, a road surface wet information retention section, and a control circuit. The road surface projection optical system scans a light source beam emitted from the coherent light source to output a projection beam, and thereby project the light pattern on the road surface around the own vehicle, the light source beam being light. The control circuit is configured to stop the output of the projection beam during a period in which the road surface wet information retention section retains information indicating that the road surface around the own vehicle is wet. The projection beam enters the road surface around the own vehicle at a shallow angle, and projects the light pattern toward a road surface near a boundary of a traveling lane where the own vehicle is traveling.

Abstract: A polyamide resin composition includes: (A) a polyamide resin; (B) an aluminic acid metal salt; and (C) at least one or more compounds selected from the group consisting of the following (C1) to (C3): (C1) a salt of one or more metal elements selected from the group consisting of groups 3, 4, 11, 13, and 14 of the periodic table, (C2) at least one organic heat stabilizer selected from the group consisting of a hindered phenol compound, a hindered amine compound, and an organic phosphorus compound, and (C3) a crystalline thermoplastic resin having a lower melting point than that of the component (A) and/or an amorphous thermoplastic resin having a lower Vicat softening point than that of the component (A), and wherein the content of the component (B) is 0.03 to 20 parts by mass with respect to 100 parts by mass in total of the component (A) and the component (C3).

Abstract: The present invention provides a molded article comprising a polyamide resin composition, wherein (the average concentration of alkali metal and/or alkaline earth metal elements in a region within a depth of 3 ?m from the surface of the molded article)/(the average concentration of alkali metal and/or alkaline earth metal elements in a region except for the region within a depth of 3 ?m from the surface of the molded article)>2.

Abstract: A polarity-reversal control circuit gives a polarity-reversal order so that the polarity of an inverter is inverted each time the polarity-reversal timing notified by a signal is recognized. The number of times of consecutive appearances of a normal polarity-reversal interval period, in which an interval of adjoining polarity-reversal timings is equal to or less than an upper limit of a polarity-reversal interval desirable for a discharge lamp, is counted, and if the unusual polarity-reversal interval period, in which an interval of the adjoining polarity-reversal timing is longer than the upper limit of a polarity-reversal interval, appears, Npm is memorized as the maximum of the number of times of consecutive appearances and after that, when the polarity-reversals signal in which the number of times of consecutive appearances becomes equal to Npm is received, it is regarded as a start of an unusual polarity-reversal interval period, and additional polarity-reversal order is given.

Abstract: A light source unit including: a plurality of elemental light sources each including a light emitting element and a drive circuit; a control circuit configured to control the drive circuit; and a luminous flux characteristic measurement section configured to measure received output luminous fluxes to generate luminous flux chromaticity-intensity correlation data. The control circuit generates a single-color color-phase indicating value, based on the luminous flux chromaticity-intensity correlation data. The control circuit determines a ratio of intensity of additional light to intensity of main component light to allow the single-color color-phase indicating value to become equal to a target value thereof, and generates an integrated color-phase indicating value, based on the luminous flux chromaticity-intensity correlation data. The control circuit performs feedback control on the drive circuits to allow a difference between the integrated color-phase indicating value and a target value thereof to be small.

Abstract: A light source unit includes: a plurality of elemental light sources each including one or more light emitting elements and one or more drive circuits; a control circuit; and a plurality of color band light characteristic measurement sections each configured to receive light to generate color band light characteristic measurement data. A plurality of the light emitting elements in the elemental light sources includes light emitting elements different in wavelength band of emission wavelength from one another. The color band light characteristic measurement sections are provided corresponding to a plurality of the wavelength bands. One or more of the color band light characteristic measurement sections include a first light intensity measurement section and a second light intensity measurement section. The control circuit generates light intensity indicating values and wavelength deviation indicating values, generates color phase indicating values, and performs first feedback control on the drive circuits.

Abstract: A light source unit includes: a plurality of elemental light sources; an optical sensor; a light quantity measurement circuit; and a control circuit. The plurality of elemental light sources each include one or more light emitting elements, one or more drive circuits, a focusing optical system, and an optical fiber. The one or more drive circuits selectively operate in a driving state or in a non-driving state. The control circuit performs a sequence that sequentially acquires light quantity measurement data by sequentially selecting one of the plurality of elemental light sources, putting at least one of the one or more drive circuits included in the selected elemental light source into a first state, and putting the plurality of drive circuits other than the at least one drive circuit into a second state, and detects abnormality based on a plurality of pieces of the acquired light quantity measurement data.

Abstract: A coherent light source apparatus includes a coherent light source, a first optical system, a light deflection unit, a second optical system and a light mixing unit disposed in that order. The coherent light source forms a first light emission region, and light projected therefrom forms a second light emission region near the light deflection unit, which deflects light flux from the second light emission region. The second optical system forms a third light emission region which is conjugate to the second light emission region near an input end of the light mixing unit, which mixes angle and a position components of incident light. The light deflection unit is configured to continuously changing a direction in which the light flux is deflected, thereby reducing speckling in light emitted from the light mixing unit.

Abstract: A coherent light source apparatus comprises a first optical system, which has a first light emission region formed by a coherent light source, and which projects light from the first light emission region to form a second light emission region, a light deflection unit which deflects light flux in connection with formation of the second light emission region; a second optical system, which forms a third light emission region in response to the light flux which has been deflected by the light deflection unit, a light mixing unit for mixing a component of an incident light angle and that of a position thereof, and a light deflection unit drive circuit for receiving a periodic optical deflection synchronization signal, thereby driving the light deflection unit, wherein the light deflection unit operates to continuously change a direction in which the light flux is deflected while synchronizing with the optical deflection synchronization signal.

Abstract: There are provided a coherent light source apparatus and a projector that achieve avoiding of an issue that uniformity in projected light is degraded by a speckle that inevitably appears upon projection of coherent light of a semiconductor laser, any other laser, etc., and each including: a coherent light source; a first optical system configured to project light derived from a first light emission region to form a second light emission region, the first light emission region being formed on basis of the coherent light source; a light deflection section configured to deflect a bundle of rays in vicinity of the second light emission region, the bundle of rays being related to formation of the second light emission region; a second optical system provided downstream of the light deflection section; and a light mixing section provided downstream of the second optical system, and configured to mix components of angles and positions of rays incident on an incident end.

Abstract: A linear light source includes an LED, an LED drive circuit substrate disposed on a frame, a flexible substrate on which an electric supply pattern is formed and to which the LED is attached at one end and the LED drive circuit is attached at the other end, a linear light guide and a heat sink. The one end of the flexible substrate is attached to the heat sink. A face of the heat sink covered by the LED and a face of the one end of the flexible substrate are perpendicular to the light guide and to a substrate face of the LED drive circuit substrate, while a face of the other end of the flexible substrate is parallel to the light guide and a substrate face of the LED drive circuit substrate. A bent portion is formed between the two ends of the flexible substrate.