Abstract: A light source apparatus includes a plurality of light emitting apparatuses. Each of the light emitting apparatuses includes a plurality of light emitting devices each of which has a light emitting area and a non-light emitting area on an emission surface thereof that emits light. At least two light emitting apparatuses of the light emitting apparatuses constitute a light emitting apparatus group disposed such that the emission surfaces of the respective light emitting apparatuses are parallel to each other with a predetermined distance, and that a distance between light emitting areas of the respective light emitting apparatuses when viewed along a direction perpendicular to the emission surfaces of the at least two of the light emitting apparatuses is shorter than a distance between the light emitting areas of the respective light emitting apparatuses when the emission surfaces of the respective light emitting apparatuses are on the same plane.

Abstract: A light source apparatus includes a plurality of light emitting apparatuses. Each of the light emitting apparatuses includes a plurality of light emitting devices each of which has a light emitting area and a non-light emitting area on an emission surface thereof that emits light. At least two light emitting apparatuses of the light emitting apparatuses constitute a light emitting apparatus group disposed such that the emission surfaces of the respective light emitting apparatuses are parallel to each other with a predetermined distance, and that a distance between light emitting areas of the respective light emitting apparatuses when viewed along a direction perpendicular to the emission surfaces of the at least two of the light emitting apparatuses is shorter than a distance between the light emitting areas of the respective light emitting apparatuses when the emission surfaces of the respective light emitting apparatuses are on the same plane.

Abstract: A lighting device of the present disclosure includes a light source device and a reflective component. The reflective component reflects an illumination light incident from the light source device off the reflecting surface of the reflective component at incident angle ?, and emits the illumination light reflected toward a display element at exit angle ?. The reflecting surface of the reflective component is rotated with respect to two axes orthogonal to each other. 20 degrees?|???|?60 degrees is satisfied. Where, each of the incident angle ? and the exit angle ? is angle of the illumination light to a horizontal direction of the display element when the illumination light is incident on a front surface of the display element.

Abstract: The display device includes a light source unit that emits light, a first display element, and a second display element. The display device further includes a light separating and synthesizing member that separates the light emitted from the light source unit into first light and second light having different wavelength regions, emits the first light toward the first display element, emits the second light toward the second display element, and synthesizes the first light that has been reflected and modulated by the first display element and the second light that has been reflected and modulated by the second display element. The display device further includes a light absorbing member that covers a part of the first display element. The light absorbing member absorbs a part of the modulated second light reflected by the second display element and directed toward the first display element.

Abstract: A phosphor wheel of exemplary embodiment in the present disclosure includes a substrate, a phosphor region circularly provided on one surface of the substrate, a light processing region circularly provided on an other surface of the substrate and entered by incident light, a light processing body provided in the light processing region, a light-transmissive region provided in the substrate, and a drive device rotating the substrate.

Abstract: The display device includes a light source unit that emits light, a first display element, and a second display element. The display device further includes a light separating and synthesizing member that separates the light emitted from the light source unit into first light and second light having different wavelength regions, emits the first light toward the first display element, emits the second light toward the second display element, and synthesizes the first light that has been reflected and modulated by the first display element and the second light that has been reflected and modulated by the second display element. The display device further includes a light absorbing member that covers a part of the first display element. The light absorbing member absorbs a part of the modulated second light reflected by the second display element and directed toward the first display element.

Abstract: A light source apparatus includes a plurality of light emitting apparatuses. Each of the light emitting apparatuses includes a plurality of light emitting devices each of which has a light emitting area and a non-light emitting area on an emission surface thereof that emits light. At least two light emitting apparatuses of the light emitting apparatuses constitute a light emitting apparatus group disposed such that the emission surfaces of the respective light emitting apparatuses are parallel to each other with a predetermined distance, and that a distance between light emitting areas of the respective light emitting apparatuses when viewed along a direction perpendicular to the emission surfaces of the at least two of the light emitting apparatuses is shorter than a distance between the light emitting areas of the respective light emitting apparatuses when the emission surfaces of the respective light emitting apparatuses are on the same plane.

Abstract: A lighting device of the present disclosure includes a light source device and a reflective component. The reflective component reflects an illumination light incident from the light source device off the reflecting surface of the reflective component at incident angle ?, and emits the illumination light reflected toward a display element at exit angle ?. The reflecting surface of the reflective component is rotated with respect to two axes orthogonal to each other. 20 degrees?|???|?60 degrees is satisfied. Where, each of the incident angle ? and the exit angle ? is angle of the illumination light to a horizontal direction of the display element when the illumination light is incident on a front surface of the display element.

Abstract: A first light source device includes: a solid-state light source; a condenser element that collects light from the solid-state light source; a retardation plate that converts linearly polarized light into circularly polarized light; and a reflection plate, wherein the retardation plate is disposed at a point of incidence of collected light and divergent light between the condenser element and the reflection plate. A second light source device includes: a solid-state light source; a retardation plate that changes a polarization direction of light from the solid-state light source to make a ratio of p-polarization and s-polarization components of the light constant under control; and a dichroic mirror that separates the light from the retardation plate according to the polarization direction, wherein the retardation plate is disposed at a point of incidence of one of collected light and divergent light between the solid-state light source and the dichroic mirror.

Abstract: A light source device 20 includes light source units 200a to 200d, lenses 203a, 203b, and 205, and mirrors 204a and 204b. Light source units 200a, 200b and/or light source units 200c, 200d are placed such that the light from units 200a to 200d either enters lens 203a at a position deviated from the optical axis of lens 203a or enters lens 203b at a position deviated from the optical axis of lens 203b.

Abstract: A wavelength conversion composite includes a plurality of light-incident layers for emitting lights of different wavelength ranges in response to an incident light. The plurality of light-incident layers are disposed in layers on the same plane, adjacent edges of two adjacent light-incident layers among the plurality of light-incident layers being in contact with each other so that the plurality of light-incident layers form an integral whole.

Abstract: A first light source device includes: a solid-state light source; a condenser element that collects light from the solid-state light source; a retardation plate that converts linearly polarized light into circularly polarized light; and a reflection plate, wherein the retardation plate is disposed at a point of incidence of collected light and divergent light between the condenser element and the reflection plate. A second light source device includes: a solid-state light source; a retardation plate that changes a polarization direction of light from the solid-state light source to make a ratio of polarization and s-polarization components of the light constant under control; and a dichroic mirror that separates the light from the retardation according to the polarization direction, wherein the retardation plate is disposed at a point of incidence of one of collected light and divergent light between the solid-state light source and the dichroic mirror.

Abstract: A light source device 20 includes light source units 200a to 200d, lenses 203a, 203b, and 205, and mirrors 204a and 204b. Light source units 200a, 200b and/or light source units 200c, 200d are placed such that the light from units 200a to 200d either enters lens 203a at a position deviated from the optical axis of lens 203a or enters lens 203b at a position deviated from the optical axis of lens 203b.

Abstract: A phosphor wheel of exemplary embodiment in the present disclosure includes a substrate, a phosphor region circularly provided on one surface of the substrate, a light processing region circularly provided on an other surface of the substrate and entered by incident light, a light processing body provided in the light processing region, a light-transmissive region provided in the substrate, and a drive device rotating the substrate.

Abstract: The light source device and the projection display apparatus include a solid-state light source unit, a dichroic mirror, a fluorescent plate, a first wave plate, and a multi-reflection mirror. The solid-state light source unit emits first and second linearly polarized light rays at a predetermined ratio, the first and the second linearly polarized light rays being orthogonal to each other. The dichroic mirror separates the first and the second linearly polarized light rays, and combines blue light with yellow light. The fluorescent plate emits the yellow light to the dichroic mirror when the fluorescent plate is excited by the first linearly polarized light ray separated by the dichroic mirror. The first wave plate converts the second linearly polarized light ray separated by the dichroic mirror, into circularly polarized light. The multi-reflection mirror reflects the circularly polarized light to the dichroic mirror as the blue light.

Abstract: A projection display apparatus of the present disclosure includes a solid state light source discharging blue light in a first wavelength range; a wheel having a transmission part transmitting blue light and a first light-emitting body emitting light in response to irradiation with blue light; a second light-emitting body emitting light in a second wavelength range closer to the longer wavelengths than the first wavelength range is and adjacent to the first wavelength range, in response to irradiation with blue light that has passed through the transmission part; a light uniformizing element uniformizing the blue light and the light emitted from the first and second light-emitting body; a light modulation element modulating the light uniformized by the light uniformizing element; and projection unit projecting the light modulated by the light modulation element.

Abstract: The light source device and the projection display apparatus include a solid-state light source unit, a dichroic mirror, a fluorescent plate, a first wave plate, and a multi-reflection mirror. The solid-state light source unit emits first and second linearly polarized light rays at a predetermined ratio, the first and the second linearly polarized light rays being orthogonal to each other. The dichroic mirror separates the first and the second linearly polarized light rays, and combines blue light with yellow light. The fluorescent plate emits the yellow light to the dichroic mirror when the fluorescent plate is excited by the first linearly polarized light ray separated by the dichroic mirror. The first wave plate converts the second linearly polarized light ray separated by the dichroic mirror, into circularly polarized light. The multi-reflection mirror reflects the circularly polarized light to the dichroic mirror as the blue light.

Abstract: The cooling device of the present disclosure has a thermally conductive base that is thermally connected to a heat-generating section, a heat pipe section embedded in the base, and a fin section that has a plurality of fins and is connected to the base in a way that the fin section covers the heat pipe section.

Abstract: A first light source device includes: a solid-state light source; a condenser element that collects light from the solid-state light source; a retardation plate that converts linearly polarized light into circularly polarized light; and a reflection plate, wherein the retardation plate is disposed at a point of incidence of collected light and divergent light between the condenser element and the reflection plate. A second light source device includes: a solid-state light source; a retardation plate that changes a polarization direction of light from the solid-state light source to make a ratio of polarization and s-polarization components of the light constant under control; and a dichroic mirror that separates the light from the retardation according to the polarization direction, wherein the retardation plate is disposed at a point of incidence of one of collected light and divergent light between the solid-state light source and the dichroic mirror.

Abstract: A projection display apparatus of the present disclosure includes a solid state light source discharging blue light in a first wavelength range; a wheel having a transmission part transmitting blue light and a first light-emitting body emitting light in response to irradiation with blue light; a second light-emitting body emitting light in a second wavelength range closer to the longer wavelengths than the first wavelength range is and adjacent to the first wavelength range, in response to irradiation with blue light that has passed through the transmission part; a light uniformizing element uniformizing the blue light and the light emitted from the first and second light-emitting body; a light modulation element modulating the light uniformized by the light uniformizing element; and projection unit projecting the light modulated by the light modulation element.