Abstract: A discharge lamp drive device includes a discharge lamp driver adapted to supply a drive current to a discharge lamp having a first electrode and a second electrode, a control section adapted to control the discharge lamp driver, and a storage section adapted to store a plurality of drive patterns of the drive current. The control section is adapted to select one drive pattern of the plurality of drive patterns based on machine learning, and execute the selected drive pattern.

Abstract: A light source device according to the present disclosure includes a light source configured to emit excitation light, a first rod part including a phosphor and configured to emit fluorescence in response to incidence of the excitation light, a second rod part located in parallel to the first rod part, including a phosphor, and configured to emit fluorescence in response to incidence of the excitation light, a first reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the first rod part, and a second reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the second rod part.

Abstract: A light source device includes a light source section configured to emit first light, a light guide body configured to propagate a part of the first light, a wavelength conversion section including a phosphor which is excited by another part of the first light and transmitted though the light guide body, and emits second light, and a light combining section configured to combine the part of the first and second lights together. The light guide body includes a first and a second side surface opposed to each other, and the wavelength conversion section includes a third and a fourth side surface opposed to each other. The light source section is disposed at a position opposed to the first side surface, and the light guide body and wavelength conversion section are disposed in parallel to each other so that the second and third side surfaces are opposed to each other.

Abstract: A light source device includes a light source emitting first light in a first wavelength band, a light guide section guiding partial light of the first light, a wavelength conversion section including a phosphor, which other partial light of the first light, and which converts the other partial light into second light in a second wavelength band. A light guide section first side surface and a wavelength conversion section second side surface are opposed. The first side surface has a diffraction grating. The partial light enters the light guide section from the first side surface via the diffraction grating. The other partial light enters the wavelength conversion section from the second side surface. The partial and second lights are emitted in one of a normal direction of the first end surface of the light guide section and a normal direction of the third end surface of the wavelength conversion section.

Abstract: A laser clad layer forming method includes a partitioning process of partitioning a formation-scheduled portion for a laser clad layer on a peripheral surface of a workpiece into areas; a phase determining process of holding the workpiece such that an axial direction thereof is horizontal and determining a phase of the workpiece such that a direction of a normal to the peripheral surface of the workpiece in one area is within a predetermined angle range with respect to a vertical upward direction; and a forming process of irradiating a powder with a laser beam while supplying the powder to the one area in a state in which the phase of the workpiece is determined and melting the powder to form a bead. The laser clad layer is formed by repeating the phase determining process and the forming process on the areas to form the beads in the whole formation-scheduled portion.

Abstract: A light source device according to the present disclosure includes a light source configured to emit excitation light, a first rod part including a phosphor and configured to emit fluorescence in response to incidence of the excitation light, a second rod part located in parallel to the first rod part, including a phosphor, and configured to emit fluorescence in response to incidence of the excitation light, a first reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the first rod part, and a second reflecting film disposed so as to be opposed to a tilted surface formed in an end part of the second rod part.

Abstract: A light source apparatus according to an aspect of the present disclosure includes a light source section that emits first light and excitation light having a first wavelength band, a light guide that causes the first light emitted from the light source section to propagate, a wavelength converter including a phosphor that emits second light having a wavelength band different from the wavelength band of the excitation light when the wavelength converter is excited with the excitation light emitted from the light source section, and a light combiner that combines the first light having exited out of the light guide with the second light having exited out of the wavelength converter. The light guide and the wavelength converter are disposed side by side, and a light transmissive member that transmits the first light is provided between the light source section and the light guide.

Abstract: A light source apparatus according to an aspect of the present disclosure includes a light source section that emits first light having a first wavelength band, a light guide that causes part of the first light emitted from the light source section to propagate, a wavelength converter includinng a phosphor that emits second light having a second wavelength band when the phosphor is excited with another part of the first light emitted from the light source section, and a light combiner that combines the part of the first light having exited out of the light guide with the second light having exited out of the wavelength converter. The light guide and the wavelength converter are disposed side by side, and the light source section is provided in a position where the light source section faces the light guide and the wavelength converter.

Abstract: A light source device includes a light source section configured to emit first light, a light guide body configured to propagate a part of the first light, a wavelength conversion section including a phosphor which is excited by another part of the first light and transmitted though the light guide body, and emits second light, and a light combining section configured to combine the part of the first and second lights together. The light guide body includes a first and a second side surface opposed to each other, and the wavelength conversion section includes a third and a fourth side surface opposed to each other. The light source section is disposed at a position opposed to the first side surface, and the light guide body and wavelength conversion section are disposed in parallel to each other so that the second and third side surfaces are opposed to each other.

Abstract: A light source apparatus according to an aspect of the present disclosure includes a first light source that emits first light, a second light source that emits second light, a light guide that causes the first light emitted from the first light source to propagate, a wavelength converter containing a phosphor that emits fluorescence when excited with the second light emitted from the second light source, and a light combiner that combines the first light having exited out of the light guide with the fluorescence having exited out of the wavelength converter. The light guide and the wavelength converter are disposed side by side. The light guide has a first end section and a second end section. The wavelength converter has a third end section and a fourth end section. The first light enters the light guide via the first end section thereof.

Abstract: A discharge lamp drive device includes a discharge lamp driver adapted to supply a drive current to a discharge lamp having a first electrode and a second electrode, a control section adapted to control the discharge lamp driver, and a storage section adapted to store a plurality of drive patterns of the drive current. The control section is configured to select one drive pattern of the plurality of drive patterns based on machine learning, and execute the selected drive pattern. In a case in which a predetermined condition is fulfilled, the control section executes a predetermined drive pattern of the plurality of drive patterns without selecting and executing the drive pattern based on the machine learning.

Abstract: A light source apparatus according to an aspect of the present disclosure includes a light source, a first wavelength converter that converts first excitation light into first fluorescence, a second wavelength converter that converts second excitation light into second fluorescence, a third wavelength converter that converts third excitation light into third fluorescence, a light combiner that combines the first fluorescence, the second fluorescence, and the third fluorescence with one another, and a light source driver that causes the light source to output the first excitation light, the second excitation light, and the third excitation light in a time sequential manner. The first, second, and third wavelength converters are disposed in parallel to one another. The excitation light enters the wavelength converters via side surfaces, and the fluorescence exits via end surfaces of the wavelength converters.

Abstract: A light source apparatus includes a light source that outputs excitation light, a first wavelength converter containing a first phosphor and converts excitation light into first fluorescence having a first wavelength band, a second wavelength converter containing a second phosphor and converts excitation light into second fluorescence having a second wavelength band, a reflector reflecting second fluorescence guided in second wavelength converter, and a light guide guiding second fluorescence having exited out of second wavelength converter to first wavelength converter. A first side surface of first wavelength converter faces second side surface of second wavelength converter. The reflector is provided at the second wavelength converter's fourth end surface. The light guide has a reflection surface that faces the third end surface of the second wavelength converter and second end surface of the first wavelength converter.

Abstract: A light source apparatus according to an aspect includes a light source that outputs first light and second light, wavelength converter that contains phosphor and converts first light into fluorescence, and a light combiner that combines second light with fluorescence and outputs the resultant combined light. Wavelength converter has a first end surface and a second end surface and a side surface. Light combiner has a first surface and a second surface and a third surface. First end surface of the wavelength converter faces the first surface of the light combiner. First light enters the wavelength converter via the side surface, and the fluorescence exits out of the wavelength converter via the first end surface. Fluorescence enters the light combiner via the first surface, the second light enters the light combiner via the third surface, and the combined light exits out of the light combiner via the second surface.

Abstract: A discharge lamp drive device includes a discharge lamp driver configured to supply drive electric current to a discharge lamp having a first electrode and a second electrode, a control unit configured to control the discharge lamp driver; and a storage unit configured to store a plurality of drive patterns of the drive electric current. The control unit is configured to select one drive pattern from among the plurality of drive patterns based on machine learning, and implement the selected drive pattern. The control unit is configured to adjust a drive electric power supplied to the discharge lamp based on illumination level information relating to an illumination level of the discharge lamp, while performing switching among the drive patterns based on the machine learning, in a case where an inter-electrode voltage of the discharge lamp is larger than a given voltage value.

Abstract: A light source device includes a light source that emits first and second excitation lights, a first wavelength conversion section including a first phosphor, and configured to convert the first excitation light into first fluorescence having a first wavelength band, a second wavelength conversion section including a second phosphor, and configured to convert the second excitation light into second fluorescence having a second wavelength band, and a light combining section that combines the first fluorescence and the second fluorescence. A first side surface of the first wavelength conversion section and a second side surface of the second wavelength conversion section are opposed to each other, the first fluorescence is emitted from a first end surface of the first wavelength conversion section toward the light combining section, and the second fluorescence is emitted from a first end surface of the second wavelength conversion section toward the light combining section.

Abstract: A light source device includes an excitation light source section configured to emit first and second excitation lights, a first wavelength conversion section including a phosphor and configured to convert the first light into first light in a first wavelength band, and a second wavelength conversion section including a phosphor and configured to convert the second light into second light in a second wavelength band. The first wavelength conversion section has first and second end surfaces, and a first side surface. The second wavelength conversion section has third and fourth end surfaces, and a second side surface. The second and the third end surfaces are opposed to each other, the first light enters the first wavelength conversion section from the first side surface, the second light enters the second wavelength conversion section from the second side surface, and the first and second lights are emitted from the first end surface.

Abstract: A light source device includes a light source emitting first light in a first wavelength band, a light guide section guiding partial light of the first light, a wavelength conversion section including a phosphor, which other partial light of the first light, and which converts the other partial light into second light in a second wavelength band. A light guide section first side surface and a wavelength conversion section second side surface are opposed. The first side surface has a diffraction grating. The partial light enters the light guide section from the first side surface via the diffraction grating. The other partial light enters the wavelength conversion section from the second side surface. The partial and second lights are emitted in one of a normal direction of the first end surface of the light guide section and a normal direction of the third end surface of the wavelength conversion section.

Abstract: A light source device includes a wavelength conversion member including a phosphor, and for converting excitation light into first light, a first light source section for emitting the excitation light, a second light source section for emitting second light, and a color combining element for generating composite light. The wavelength conversion member has first and second end surfaces, and a side surface. The excitation light enters the wavelength conversion member from the side surface, and the first light is emitted from the first end surface. The color combining element has first and second surfaces parallel to each other, and a third surface. The first light emitted from the wavelength conversion member enters the color combining element from the first surface, the second light emitted from the second light source section enters the color combining element from the third surface, and the composite light is emitted from the second surface.

Abstract: A discharge lamp drive device includes a discharge lamp driver configured to supply drive electric current to a discharge lamp having a first electrode and a second electrode, a control unit configured to control the discharge lamp driver, and a storage unit configured to store a plurality of drive patterns of the drive electric current. The control unit is configured to select one drive pattern from among the plurality of drive patterns based on machine learning, and implement the selected drive pattern. The control unit performs a first control that increases a drive electric power supplied to the discharge lamp according to an increase in an inter-electrode voltage of the discharge lamp, in a case where the inter-electrode voltage is equal to or larger than a first voltage value and the inter-electrode voltage is equal to or lower than a second voltage value higher than the first voltage value.