A wavelength conversion member including a wavelength conversion layer containing a fluoride phosphor, quantum dots, a surfactant, and a resin. The fluoride phosphor contains fluoride particles having a specific composition and having particle size values within specific ranges. The quantum dots include at least one selected from a first crystalline nanoparticle and a second crystalline nanoparticle. The first crystalline nanoparticle has a specific composition. When irradiated with light having a wavelength of 450 nm, the first crystalline nanoparticle emits light having an emission peak at a wavelength in a range from 510 nm to 535 nm, and a full width at half maximum of the emission peak of the first crystalline nanoparticle is in a range from 10 nm to 30 nm. The second crystalline nanoparticle includes a chalcopyrite-type crystalline structure, and a full width at half maximum of the emission peak of the second crystalline nanoparticle is 45 nm or less.

A wavelength conversion member including a wavelength conversion layer containing a fluoride phosphor, quantum dots, a surfactant, and a resin. The fluoride phosphor contains fluoride particles having a specific composition and having particle size values within specific ranges. The quantum dots include at least one selected from a first crystalline nanoparticle and a second crystalline nanoparticle. The first crystalline nanoparticle has a specific composition. When irradiated with light having a wavelength of 450 nm, the first crystalline nanoparticle emits light having an emission peak at a wavelength in a range from 510 nm to 535 nm, and a full width at half maximum of the emission peak of the first crystalline nanoparticle is in a range from 10 nm to 30 nm. The second crystalline nanoparticle includes a chalcopyrite-type crystalline structure, and a full width at half maximum of the emission peak of the second crystalline nanoparticle is 45 nm or less.

An irradiation unit is disclosed that includes a pump radiation source for emitting pump radiation in the form of a beam, a conversion element for at least partially converting the pump radiation into conversion radiation, and a support on which the conversion element is situated. The support accommodates a through-hole through which the beam including the pump radiation is incident on an incident surface of the conversion element, the though-hole being laterally delimited by an inner wall face of the support, at least one portion of the face tapering in the direction of the incident surface. During operation, the pump radiation conducted in the beam is at least intermittently at least in part, incident on the inner wall face of the support and is reflected thereby onto the incident surface.

An irradiation unit is disclosed that includes a pump radiation source for emitting pump radiation in the form of a beam, a conversion element for at least partially converting the pump radiation into conversion radiation, and a support on which the conversion element is situated. The support accommodates a through-hole through which the beam including the pump radiation is incident on an incident surface of the conversion element, the though-hole being laterally delimited by an inner wall face of the support, at least one portion of the face tapering in the direction of the incident surface. During operation, the pump radiation conducted in the beam is at least intermittently at least in part, incident on the inner wall face of the support and is reflected thereby onto the incident surface.

A lighting device disclosed in an embodiment of the invention includes: a substrate; a plurality of light emitting devices disposed on the substrate; a first reflective member disposed on the substrate; a resin layer disposed on the first reflective member; a second reflective member disposed on the resin layer; and a wavelength conversion layer disposed on one surface of the resin layer opposite to the light emitting surface of the light emitting device, wherein a distance from the light emitting surface to the one surface may be 5 to 10 times a height of the resin layer.

A lighting device disclosed in an embodiment of the invention includes: a substrate; a plurality of light emitting devices disposed on the substrate; a first reflective member disposed on the substrate; a resin layer disposed on the first reflective member; a second reflective member disposed on the resin layer; and a wavelength conversion layer disposed on one surface of the resin layer opposite to the light emitting surface of the light emitting device, wherein a distance from the light emitting surface to the one surface may be 5 to 10 times a height of the resin layer.

A laser-excited-phosphor light-source system in which a phosphor plate remains stationary while a laser beam is made to scan across the phosphor plate. In some embodiments, the phosphor-plate assembly includes a plurality of areas each having a different phosphor substance that emits wavelength-converted light in response to excitation from the scanned laser beam and/or a diffusive material. In some embodiments, one or more rotating prisms and/or one or more rotating or oscillating or angularly displaced mirrors are used to deflect the input laser light on the way toward the phosphor plate and to deflect the wavelength-converted and/or diffused light in the opposite direction such that the output beam of wavelength-converted and/or diffused light remains stationary with respect to the phosphor plate as the input laser beam is moved across the surface of the phosphor-plate assembly.

A laser-excited-phosphor light-source system in which a phosphor plate remains stationary while a laser beam is made to scan across the phosphor plate. In some embodiments, the phosphor-plate assembly includes a plurality of areas each having a different phosphor substance that emits wavelength-converted light in response to excitation from the scanned laser beam and/or a diffusive material. In some embodiments, one or more rotating prisms and/or one or more rotating or oscillating or angularly displaced mirrors are used to deflect the input laser light on the way toward the phosphor plate and to deflect the wavelength-converted and/or diffused light in the opposite direction such that the output beam of wavelength-converted and/or diffused light remains stationary with respect to the phosphor plate as the input laser beam is moved across the surface of the phosphor-plate assembly.

A lighting apparatus includes a light source module, a light passing cover, a prism plate and a surface rim. The light source module includes a light source plate and multiple LED modules mounted on the light source plate. The light passing cover has a first side facing to the multiple LED modules for receiving a light from the multiple LED modules. The prism plate is disposed with more than 50 prism units for diffusing the light passing through the light passing cover from a second side of the light passing cover. The surface rim has a light opening for the light diffused by the prism units to escape from the lighting apparatus.

A lighting apparatus includes a light source module, a light passing cover, a prism plate and a surface rim. The light source module includes a light source plate and multiple LED modules mounted on the light source plate. The light passing cover has a first side facing to the multiple LED modules for receiving a light from the multiple LED modules. The prism plate is disposed with more than 50 prism units for diffusing the light passing through the light passing cover from a second side of the light passing cover. The surface rim has a light opening for the light diffused by the prism units to escape from the lighting apparatus.