Abstract: An embodiment relates a light-emitting device package and a lighting device. A light-emitting device package according to an embodiment may include a package body 11, a light-emitting device 25 disposed on the package body 11, a molding member 41 disposed on the light-emitting device 25, and a phosphor 30 disposed in the molding member 41. An energy ratio of a first wavelength range of 415 nm to 455 nm of the light-emitting device may be 75% or less of energy of a sunlight source having the first wavelength range. An energy ratio of a second wavelength range of 465 nm to 495 nm of the light-emitting device may be 60% or more of energy of a sunlight source having the second wavelength range. Moreover, the energy ratio of the second wavelength range of 465 nm to 495 nm may be higher than the energy ratio of a first wavelength range of 415 nm to 455 nm in the light-emitting device.

Abstract: The invention provides a punching packaged light-emitting diode apparatus, which comprises: a substrate, including a first molding material, a first nano heat conductive material, and a first fluorescent material; a light-emitting unit, located on a surface of the substrate; two wiring units, individually connected to the light-emitting unit; and a packaging material, including a second molding material, a high refractive material, a second nano heat conductive material, and a second fluorescent material, to cover the wiring units and the light-emitting unit in a solidified structure formed by a punching process; wherein, the light-emitting unit emits light to outside through the substrate and the packaging material.

Abstract: The present application provides an encapsulation method for an OLED and an encapsulation structure of an OLED. In the encapsulation method for an OLED of the present application, by disposing the UV light absorbing layer on the surface of the OLED device, in one aspect, the UV light absorbing layer has a low UV transmittance. Therefore, UV light can be blocked from being directed to the TFT during UV curing of the encapsulation material and the sealant to reduce or eliminate the influence of UV light on the TFT; on the other hand, the UV light absorbing layer has high visible light transmittance and therefore does not reduce the light intensity of the OLED device. The encapsulation structure of the OLED of the present application is fabricated by the above encapsulation method. The TFT has excellent electrical performance and the OLED device thereof has strong light intensity.

Abstract: A wavelength conversion structure and a projection device are provided. The wavelength conversion structure is disposed on a transmission path of an illumination light beam emitted by a light source of the projection device, and includes a rotary disc, a wavelength conversion material, and a scattering-reflective material. The rotary disc has a light-conversion region and a non-light-conversion region. The light-conversion region surrounds the non-light-conversion region. The wavelength conversion material is disposed on the rotary disc, and is aligned to the light-conversion region. An energy gap of the wavelength conversion material is smaller than photon energy of the illumination light beam. The scattering-reflective material is disposed on the rotary disc, and is aligned to the light-conversion region and not aligned to the non-light-conversion region. An energy gap of the scattering-reflective material is larger than the photon energy of the illumination light beam.

Abstract: A lighting device comprises a lamp housing, a lighting body provided in the lamp housing and having a working voltage of direct-current 3V-36V, and a lamp base detachably connected with the lamp housing and in detachable electrical connection the lighting body. The lamp housing and the lamp base are made from a plastic material. A lamp string comprises a lamp wire and lighting devices electrically connected thereto. The lighting device and the lamp string are more convenient to assemble, do not require vacuum or filling of an inert gas. The lighting body, when damaged, can be disassembled and replaced at any time, with low production, maintenance and using costs. Using the plastic lamp base and lamp housing makes the lighting device more durable. No adapter is provided inside the lighting device, so that the internal structure of the lighting device is more simplified, and it is safer to use.

Abstract: An optical cup which mixes multiple channels of light to form a blended output, the device having discreet zones or channels including a plurality of reflective cavities each having a remote phosphor light converting appliance covering a cluster of LEDs providing a channel of light which is reflected upward. The predetermined blends of phosphors provide a predetermined range of illumination wavelengths in the output.

Abstract: The present invention relates to a vehicle emergency safety device using a selfie stick, the device comprising: a support which comprises a plurality of poles with different diameters, including first, second, third, and fourth poles, wherein the poles are successively nested in the first pole with the largest diameter and withdrawn therefrom up to a desired length in a telescopic manner; two fixing brackets installed in the lower portion of the support; a joint part installed in the upper portion of the support; a cradle which is installed in the upper portion of the joint part and can be rotated 360 degrees by a second adjusting screw; and a flashing light inserted into and fixed to the cradle.

Abstract: A laser lighting system has a first laser light source, a second laser light source and a light conversion element. The outputs from the first and second laser light sources are directed to the light conversion element, which generates wavelength-converted light output in response to excitation by laser light. The first and second laser light sources generate laser light of different wavelength having different absorption characteristics within the light conversion element, such that the range of depths within the light conversion element from which wavelength-converted light is generated is different. This difference in converted output can be used to create different optical effects so that beam steering or beam shaping can be performed.

Abstract: An illumination device includes multiple semiconductor primary light sources for emitting respective primary light beams, at least one movable mirror, which can be illuminated by means of the primary light beams, and which can assume at least two angle positions, and a luminophore element, which can be illuminated by means of primary light beams deflected by the at least one mirror. Light spots of the individual primary light beams are locally differentiable on the at least one luminophore element, an overall light spot composed of the light spots of the individual primary light beams is locally differentiable on the at least one luminophore element depending on the angle position of the at least one movable mirror, and at least one beam property of at least one primary light beam incident on the at least one luminophore element is variable during operation of the illumination device.

Abstract: A component includes a carrier with a mold body made of an electrically insulating plastic material and a metal layer, wherein the metal layer includes a first subregion and a second subregion, and at least one of the subregions extends in a vertical direction through a mold body to electrically contact a semiconductor body, and the first and second segments are spatially separated from one another in a lateral direction and electrically conductively connect to one another via a connecting structure, wherein the connecting structure, the first subregion and the second subregion adjoin the mold body and are arranged on the same side of the semiconductor body.

Abstract: A wavelength conversion member including a wavelength conversion layer containing quantum dots which are excited by exciting light and emit fluorescent light rays, in which the wavelength conversion layer includes base material films on at least one surface, and in the base material films, an absorbance of light at a wavelength of 450 nm measured by using an integrating sphere is less than 0.9%, and a total light ray transmittance is less than 92%.

Abstract: A portable fashion modeling runway comprising one or more runway panels disposed on an underlying surface and positioned proximate to one or more other runway panels, wherein each of the runway panels comprise one or more luminescent materials.

Abstract: A container for aerial drone transport includes a main body; a lid; a plurality of aerial drone grip elements organized in an aerial drone grip configuration; a plurality of visual aerial drone orientation markers carried by at least one external surface at predetermined locations relative to the plurality of aerial drone grip elements, which define a pickup orientation; and a first machine-readable code indicating a container serial number, container dimensions, weight carrying capacity, and/or the aerial drone grip configuration. The container can also include a second machine-readable code indicating a target aerial drone delivery address. The container can include an RFID tag, and possibly a sensing unit configured for sensing one or more types of signals. The container can be securely closed by closure mechanisms, including an elastic band structure having knob elements that can be inserted into and securely retained by aperture structures having two different cross-sectional areas.

Abstract: A display device is provided and a display unit of the display device capable of generating color of light close to or identical to blue primary color of DCI-P3 color gamut includes a light emitting unit and a light converting layer disposed on the light emitting unit. The display unit emits an output light under an operation of the highest gray level, the output light having an output spectrum. An intensity integral of the output spectrum from 380nm to 493nm defines as a first intensity integral, an intensity integral of the output spectrum from 494nm to 580nm defines as a second intensity integral, a ratio of the first intensity integral over the second intensity integral defines as a first ratio, and the first ratio ranges from 5 to 20.

Abstract: An elongate light includes a main body, being an extruded flexible plastic member, including a frame portion, a base board and two wing portions which are integrally formed of one piece. A longitudinal direction of the main body is defined as a first direction. The base board and the frame portion are connected to form a tubular structure. The two wing portions extend outwardly from two sides of the base board toward a direction away from the frame portion. A side of the base board away from the frame portion has at least one lighting element.

Abstract: Systems and methods for additive manufacturing a homogeneous optical element are disclosed herein. A homogeneous pattern of light is shined on a polymerizable liquid to form each polymerized solid layer of the optical element.

Abstract: In a light source device, an axis extends from a light-emitting face and perpendicularly to the light-emitting face. A reflective surface includes a curved surface defined by rotating a first arc which is a part of an ellipse around the axis. The ellipse has a first focal point and a second focal point which are located on the light-emitting face. The second focal point is located adjacently to the first arc with respect to a center of the ellipse. A distance from the first focal point to the axis is shorter than a distance from the second focal point to the axis.

Abstract: A wavelength conversion device includes: a light source that emits light having a predetermined wavelength included in a wavelength range from ultraviolet light to visible light; a phosphor layer that converts the wavelength of light from the light source which is incident on an incidence face thereof; and an optical component that is disposed between the light source and the phosphor layer, and projects light emitted by the light source onto the incidence face of the phosphor layer in a ring shape.

Abstract: An illumination device for variable illumination in different spatial directions is provided. The illumination device includes a pump radiation unit, which has a pump radiation source for emitting pump radiation, a luminescent element for at least partial conversion of the pump radiation into illumination light, which is emitted in response to excitation with the pump radiation on an illumination light emission surface of the luminescent element, and optics which are assigned to the luminescent element and respectively direct illumination light ray bundles, which come from different positions of the illumination light emission surface and strike the optics on a luminescent material side, into a different spatial direction of the propagation on an illumination side opposite to the luminescent material side, The pump radiation unit is configured to respectively emit a pump ray bundle adjustably in different spatial directions, which pump ray bundles are coupled in on the illumination side.

Abstract: A light emitter includes a light emitting layer and a reflection layer. The reflection layer includes a first dielectric film and a dielectric multi-layer film. The dielectric multi-layer film includes at least one layer of laminated film, in which each layer of laminated film includes a pair of a second dielectric film and a third dielectric film. The first dielectric film has a refractive index lower than a refractive index of the light emitting layer and the second dielectric film. The third dielectric film has a refractive index lower than the refractive index of the second dielectric film. A relationship of d1??ave/n1 is satisfied, where ?ave denotes an average wavelength of a spectrum of visible light emitted via the light emitting layer, n1 denotes the refractive index of the first dielectric film, and d1 denotes a film thickness of the first dielectric film.

Abstract: Aspects of the present disclosure involve a transparent structure. The structure may include at least one light source, a transparent light-carrying guide layer optically coupled with the at least one light source. The structure may include refractive layers where a light absorbing feature is operably associated with the light-carrying guide layer to absorb any light not internally reflected in the light guide layer, at least adjacent the light source.

Abstract: A laser activated remote phosphor system may include a radiation source configured to emit excitation radiation and a conversion element which has a phosphor and is able to be irradiated by the excitation radiation. An input coupling surface of the conversion element has a delimitation line beyond which a central excitation spot of the excitation radiation radiates at least in sections.

Abstract: An end cap for a solid-state lighting device is described that provides an electrical connection(s) between an external power source and at least one solid-state emitter disposed in a hollow member of the lighting device. An outer wall extends a first distance and an inner wall extends a second distance from an inward-facing side of the end cap base. A gap between the inner wall and the outer wall accommodates the insertion of the hollow member. A contactor electrically coupled to a conductive member on an opposite side of the end cap extends into the gap. The contactor exerts a force on a flexible conductor and provides a power supply path to or power return path from the at least one solid-state emitter. Preferably, the lighting device includes an array of solid-state emitters disposed on a flexible substrate.

Abstract: The present invention relates to a light emitting apparatus comprising, an element (104) arranged to convert light of a first wavelength (110) into light of a second wavelength (112), emit the light of the second wavelength (112), and to reflect light of the first wavelength (110), a reflector (106) arranged to reflect light of the first wavelength (110), and transmit light of the second wavelength (112), a light source (102) emitting light of the first wavelength (110) on the reflector (106) such that the reflected light of the first wavelength (110) is directed towards the element (104), a lens (108) arranged to focus light of the first wavelength (110) reflected by the reflector (106) onto the element (104), and to collect light emitted and reflected from the element (104), wherein the element (104) is arranged to emit light of the second wavelength (112) with an angular distribution (116) within a collection angle of the lens (108), wherein the element (104) is further arranged to reflect light of the fir

Abstract: A white light source device includes a first light-emitting element, and at least one second light-emitting element. The first light-emitting element includes a first light-emitting unit and a first wavelength conversion unit, and emits a first light beam. Each of the second light-emitting elements includes a second light-emitting unit and a second wavelength conversion unit, and emits a second light beam. An emission spectrum of the second light beam is different from an emission spectrum of the first light beam. The first light beam and the second light beam are mixed into a white light beam, and a color fidelity index of the white light beam is greater than 90.

Abstract: A luminaire includes an excitation light source which emits excitation light. A first fluorescent plate includes a first principle surface disposed across the optical axis of the excitation light. A first phosphor layer is arranged discretely along the first principle surface. A second fluorescent plate is arranged at the downstream side of the excitation light with respect to the first fluorescent plate. The second fluorescent plate includes a second principle surface disposed across the optical axis. A second phosphor layer is arranged discretely along the second principle surface. The second phosphor layer has a wavelength conversion characteristic different from a wavelength conversion characteristic of the first phosphor layer. A support supports the first fluorescent plate and the second fluorescent plate such that at least one of relative positions and rotations of the first fluorescent plate and the second fluorescent plate are adjustable.

Abstract: According to an embodiment, a light-emitting device is disclosed. The disclosed light-emitting device comprises: a substrate having a body and first and second lead electrodes on the body; a light-emitting chip arranged on the second lead electrode and electrically connected to the first and second lead electrodes; a phosphor film arranged on the light-emitting chip; a reflective member arranged on the outer peripheries of the light-emitting chip and the phosphor film, respectively; and an optical lens, which is arranged on the phosphor film and on the reflective member, and which has a lens portion that has an aspherical shape.

Abstract: [Problem] To provide highly heat-resistant and radiation-resistant radiation measuring equipment. [Solution] Provided are a charged particle radiation measuring method and a charged particle radiation measuring device using a scintillator comprising a phosphor in which the main component is a SiAlON phosphor.

Abstract: A lighting device, assembly and method includes, in an embodiment, a lighting device having a light source. The lighting device also has a heat transfer device. The heat transfer device includes a primary conductor connected to the light source and a plurality of secondary conductors connected to the primary conductor. The secondary conductors define at least one heat transfer passageway extending in the upward direction.

Abstract: An example provides a lens comprising: a first body; a second body on the first body; and a curved surface part on the second body, wherein a groove is formed on the inside of the first body and the second body; the first body is arranged so as to protrude from the second body at the boundary area of the first body and the second body; the side wall of the first body absorbs light; and the side wall of the second body is inclined in the central direction.

Abstract: A display device includes a display panel and a backlight unit. The display panel receives a light to display an image and has a first radius of curvature. The backlight unit is disposed under the display panel to provide the light to the display panel and has a second radius of curvature. The backlight unit includes a plurality of light sources and a plurality of scattering units. The light sources emit the light and the scattering units scatter at least a portion of the light.

Abstract: A light module for providing polychromatic light is provided. The light module includes a wavelength conversion element, a first light source for emitting a first light beam in a first wavelength range, and at least one second light source for emitting a second light beam. The element is configured to convert primary light radiated in by the first light beam into a first conversion light and to convert primary light radiated in by the at least one second light beam into a second conversion light. At least the first conversion light and the second conversion light together form a third light beam. The module further includes a control unit configured for predefining a first luminous intensity for the first light source and/or a second luminous intensity for the at least one second light source depending on a measurement of the light color of the third light beam.

Abstract: Embodiments provide a light-emitting apparatus including at least one light source configured to discharge excitation light that travels straight, and a reflector configured to reflect the excitation light, which travels straight and is introduced in an incidence direction, in an emission direction, which is opposite and parallel to the incidence direction.

Abstract: A light source module including a blue laser light source, an adjusting light source, a wavelength conversion device, and a light combiner is provided. The wavelength conversion device is disposed on an optical path of a first blue beam provided by the blue laser light source and an optical path of an adjusting beam provided by the adjusting light source. When a first transmissive area of the wavelength conversion device is cut into the optical path of the first blue beam, the blue laser light source and the adjusting light source are simultaneously turned on. A transmission direction of the first blue beam passing through the first transmissive area is opposite to a transmission direction of the adjusting beam passing through the first transmissive area. The light combiner combines the first blue beam and the adjusting beam into a second blue beam. Moreover, a projection apparatus is provided.

Abstract: A display device includes a display panel, a backlight module, an optical sheet, and a polarizer. The display panel includes a plurality of first-color sub-pixels, a plurality of second-color sub-pixels, and a plurality of third-color sub-pixels. The backlight module includes a blue light source. The optical sheet includes a substrate, a plurality of transparent bumps, and a photo-excitation layer. The transparent bumps are overlapped with the third-color sub-pixels in a vertical projecting direction. The photo-excitation layer includes first photo-excitation regions which are overlapped with the first-color sub-pixels in the vertical projecting direction, and second photo-excitation regions which are overlapped with the second-color sub-pixels in the vertical projecting direction. Each of the first photo-excitation regions and the second photo-excitation regions has a plurality of first-color quantum dots and a plurality of second-color quantum dots.

Abstract: A display module includes a bottom substrate, a display device having a plurality of display pixels, and a diffusion module. The display pixels are disposed between the bottom substrate and the diffusion module. The diffusion module has a thickness and a haze, wherein the haze of the diffusion module satisfies: A < Haze < B ; wherein A = 0.642 × ( NP ) 0.35 ( NT ) 0.32 ; B = 0.821 × ( NP ) 0.45 ( NT ) 0.60 ; NP = 25400 / PPI 63 ? ? µm ; and NT = T 500 ? ? µm ; wherein PPI is a resolution of the display module, T is the thickness of the diffusion module, and Haze is the haze of the diffusion module.

Abstract: A lighting reflector 10 includes a base member 11, made of metal, having an inner circumferential surface 13a expanding toward a light exit aperture 14 open at an end in an axial direction. A thin-film layer 17 which is formed from a thin film containing ceramic and which scatters light is placed on an end portion of the inner circumferential surface 13a that is on the opposite side to the light exit aperture 14.

Abstract: A lighting device for a vehicle includes a light source device; a main lens; a reflective fluorescent body configured to reflect and convert wavelengths of incident beams; and a prism arranged between the main lens and the reflective fluorescent body. The prism is configured to: reflect beams emitted from the light source device to be incident on the reflective fluorescent body; and transmit, through the prism and to the main lens, beams reflected from the reflective fluorescent body. The prism includes: a first surface facing the reflective fluorescent body; a second surface through which beams are incident; and a third surface forming an acute angle with the first surface. The prism is configured such that the beams incident through the second surface of the prism form angles of incidence, with respect to the third surface of the prism, that are greater than a critical angle of the prism.

Abstract: This disclosure provides a laser speckle-removing optical component, including a beam-shrinking lens group and a diffusion sheet arranged on a laser emergent optical path, where the beam-shrinking lens group includes a first beam-shrinking lens and a second beam-shrinking lens, and the diffusion sheet is located between the first beam-shrinking lens and the second beam-shrinking lens, and a distance between the diffusion sheet and the first beam-shrinking lens is shorter than a focal length of the first beam-shrinking lens. The arrangement of the diffusion sheet between the first beam-shrinking lens and the second beam-shrinking lens is able to alleviate the accumulation phenomenon of dust particles on the diffusion sheet, therefore, alleviating light attenuation phenomenon, and prolonging the service life of the laser source. This disclosure also provides a double-color laser source, a three-color laser source and a laser projection equipment applying the above laser speckle-removing optical component.

Abstract: The invention provides a lighting unit (10) comprising a first lighting device (100), a second lighting device (200), and a control unit (300) configured to control the lighting devices (100,200), wherein (a) the first lighting device (100) is configured to provide first lighting device light (101) having a first spectral distribution with at least two first emission maxima (EM11, EM12, . . . ) spaced by at least 75 nm, a first color point x1,y1 and a first correlated color temperature T1; (b) the second lighting device (200) is configured to provide second lighting device light (201) having a second spectral distribution with at least two emission maxima (EM21, EM22, . . .

Abstract: A luminaire including a wavelength converter and a method of manufacturing the luminaire are provided. The wavelength converter radiates, based on a laser light beam, a light beam having a wavelength different from the laser light beam. The method of measuring the luminaire includes measuring wavelengths of laser light beams oscillated by a plurality of laser elements to identify main wavelengths of the plurality of laser elements, storing association information between main wavelength information items indicating the main wavelengths identified and element information items identifying the plurality of laser elements corresponding to the main wavelengths identified, selecting a combination of laser elements having a composite wavelength falling within a predetermined range, from the plurality of laser elements, based on the association information, and arranging optical paths to irradiate a same area of the wavelength converter with the laser light beams of the combination of laser elements selected.

Abstract: A lighting apparatus including a base is provided. The base includes a through-hole. The through-hole is aligned with an optical path of laser light for receiving and transmitting the laser light. A light emitter which, when irradiated with the laser light transmitted through the through-hole, radiates light by converting a wavelength of the laser light. An attachment component is provided on the base for attachment of the light emitter to the base. The light emitter is removable from the base. A light blocker opens the optical path of the laser light by being contacted by the light emitter when the light emitter is attached to the base, and blocks the optical path of the laser light when the light emitter is removed from the base.

Abstract: An internet access point that combines multi spectrum wireless connectivity into a solid state LED lighting element and fixture is provided for a total integrated network environment. The system includes: a composite wireless access point; a connection cable; and a power mechanism. The power mechanism provide a gateway between the lighting and a variety of power sources, including conventional grid power. A modular server cabinet provides a grid tie point. Each server element provides a plurality of PCB mounted RJ45 connecters for electrical connection with low voltage panel lighting through network patch cables. The cables terminate between the power server rack and a low voltage panel light/wireless internet access point to provide 24 VDC power. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A light source system and a projection system include a first laser array generating a red laser light; a second laser array generating a blue laser light; a beam-splitting plate located on a light path of the first and second laser arrays, for directing some of the red laser light and some of the blue laser light to a wavelength conversion device and directing some of the blue laser light to a light scattering device. The wavelength conversion device has wavelength conversion materials for receiving the blue laser light and producing a converted light, and for receiving and scattering the red laser light to form a first red light. The light scattering device has a scattering material for scattering the blue laser light to form a blue light. A light combining device forms a combined light from the converted light, the first red light and the blue light.

Abstract: The present invention provides a semiconductor nanoparticle assembly having improved luminous efficiency, heat resistance, and oxidation resistance, and a method for manufacturing the same. The present invention relates to a semiconductor nanoparticle assembly which includes an aggregate having a plurality of coated semiconductor nanoparticles aggregated, said coated semiconductor nanoparticles each containing a semiconductor nanoparticle having a core/shell structure and a translucent coating layer having a thickness of 3 nm or more and 15 nm or less for coating the semiconductor nanoparticle.

Abstract: The present application relates to a backlight unit and a display device including the same, and according to one aspect of the present application, there is provided a backlight unit including a light source, a light guide plate disposed at a side portion of the light source, and a light-modulating reflective film disposed below the light guide plate, wherein the light-modulating reflective film includes a first base film, a quantum dot film disposed to be in contact with a bottom of the first base film and including a quantum dot, a reflective film including a diffuse reflection material, and a second base film disposed to be in contact with a bottom of the reflective film, and the reflective film including a diffuse reflection material is disposed to be in contact with the quantum dot film.

Abstract: Disclosed are a wavelength conversion device, a light-emitting device and a projection system, comprising a wavelength conversion layer having a first surface and a second surface opposite each other. The first surface receives an excitation light. The wavelength conversion layer absorbs the excitation to produce a converted light and emits the converted light or the mixture of the converted light and the excitation light from the first surface and the second surface. A scattering reflective substrate is stacked with the wavelength conversion layer and includes a white porous ceramic or a white scattering material for scattering the incident light. The scattering reflective substrate includes a third surface facing the second surface and scatters at least a part of the incident light on the third surface and then emits all the light from the third surface to the second surface.

Abstract: An optical cup which mixes multiple channels of light to form a blended output, the device having discreet zones or channels including a plurality of reflective cavities each having a remote light converting appliance covering a cluster of LEDs providing a channel of light which is reflected upward. The predetermined blends of luminescence materials provide a predetermined range of illumination wavelengths in the output. The remote light converting appliances may be provided as frustoconical elements within frustoconical reflective cavities with a void between the light converting appliances and the associated LEDs.

Abstract: Various embodiments may relate to a lighting device, which includes a lamp tube having two open ends, a light engine arranged in the lamp tube, a carrier supporting the light engine, and two end caps closing the open ends. The lighting device further includes a diffuser. The carrier supporting the light engine is held on the diffuser, and the diffuser is held on the inner wall of the lamp tube.

Abstract: A fluorescent substrate according to one embodiment of the present disclosure includes: a substrate that is configured in a rotatable manner; a fluorescent layer disposed in a center of the substrate; and a fixing layer that fixes a portion of a surface on side on which the fluorescent layer is located of the substrate and a portion of a surface on side on which the substrate is located of the fluorescent layer to each other. Thus, in a case where warpage occurs in the substrate due to a stress caused by thermal expansion arising in each of the fluorescent layer and the substrate, it is possible to reduce an amount of displacement of the fluorescent layer.