A wavelength converting member is provided, comprising a wavelength converting layer comprising an organic wavelength converting compound distributed in a matrix comprising an amorphous or semi-crystalline aromatic polyester wherein the aromatic polyester molecules are predominantly in a randomly oriented state, said wavelength converting member further comprising at least one support element. By avoiding uniaxial or biaxial orientation of the polyester matrix, the organic wavelength converting compound (organic phosphor) is well protected against photo-chemical degradation. The support element ensures the dimensional stability of the polyester matrix at temperature above the glass transition temperature.

The present invention provides a backlight module and a display device. The backlight module includes a back plate; a light-emitting chip formed on the back plate and capable of emitting light rays of a first color; a packaging entity made of a light-transmitting material and configured to package the light-emitting chip onto the back plate; and a phosphor layer formed in the packaging entity and consisting of phosphors doped in the packaging entity. The phosphor layer is configured to convert a part of light rays among the light rays of the first color emitted from the light-emitting chip into light rays of a second color, so as to be mixed with the remaining, unconverted light rays of the first color to form white backlight.

In various embodiments, a lighting device is provided. The lighting device includes at least one light source for emitting primary light, at least one phosphor body which is illuminatable by the primary light and is spaced apart from the at least one light source, and at least one light scattering body which is situated optically downstream of the phosphor body in a light propagation direction of the primary light that is uninfluenced by the phosphor body. The lighting device is designed in the case of an intact phosphor body to generate an illumination pattern by light generated by the phosphor body, and otherwise to generate a light emission pattern by light generated by the at least one light scattering body. The light emission pattern differs from the illumination pattern.

A method of dimming an LED luminaire and a dimmable LED luminaire includes two pluralities of LEDs. The first plurality emits electromagnetic radiation at a first frequency to react with a remote phosphor and provide a phosphor illumination. The second plurality of LEDs are phosphor LEDs that emit phosphor electromagnetic radiation at a second frequency to react with the remote phosphor and provide double-phosphor illumination. The phosphors and LEDs are configured to produce specific color points when the LEDs are at full power and at full dim. When the luminaire receives a dimming signal, the first plurality of LEDs dim the phosphor illumination over a majority of the luminaire's illumination range, but the second plurality of LEDs continue to receive constant current and provide undimmed double-phosphor illumination over the majority of the luminaire's illumination range.

The illuminated headset is a headphone that is adapted for listening to audio sources, which provide electrical signals, which are converted to audible sound by the speakers in the headphone. The headphone is enhanced with an illumination system. The illumination system comprises a plurality of LEDs and a phosphorescent material. The plurality of LEDs is used to illuminate the cable, the left speaker, and the right speaker. The phosphorescent material is used to form the headband, the left speaker housing, and the right speaker housing. The illuminated headset comprises a headset, a master cable, a jack, a clasp, a left cable, and a right cable.

A vehicle is provided herein that includes a pickup box defining a storage compartment therein. A liner is disposed on an exterior surface of the pickup box. A first luminescent structure is disposed within the liner and is configured to luminesce in response to receiving excitation light from a first light source.

A lighting apparatus including a light generating device and at least one light wavelength conversion element and also at least one light directing means is provided. The light generating device and the at least one light directing means are configured in such a way that linearly polarized light is generated and directed from different directions to the at least one light wavelength conversion element, such that the linearly polarized light impinges on a surface of the at least one light wavelength conversion element from different directions in each case at an angle of incidence which corresponds to a Brewster angle, wherein the polarization direction of the linearly polarized light is parallel to the plane of incidence thereof.

A lighting apparatus includes: a light source configured to generate laser beams; a light converter disposed in a direction in which the laser beams are emitted and configured to generate converted beams excited by the laser beams and transmitted beams of the laser beams; and a light housing disposed in front of the light converter, having an opening along a path of beam travel, and configured to adjust a light distribution of the converted beams.

The present invention realizes a light source unit and a method of cooling the light source unit that reduces any increase in the ambient temperature of a red solid-state light source and thus reduces any decrease in brightness of the red solid-state light source. The light source unit has: a wall having a window, the wall being provided between a light tunnel-side circulation unit that accommodates a light tunnel that is irradiated by the output light of a solid-state light source and a phosphor wheel-side circulation unit that accommodates a phosphor wheel that is excited by the emitted light of the light tunnel; a light tunnel-side heat-receiving heat sink that is provided in the light tunnel-side circulation unit; a phosphor wheel-side heat-receiving heat sink provided in the phosphor wheel-side circulation unit, a heat-radiating heat sink that is connected to the light tunnel-side heat-receiving heat sink and to the phosphor wheel-side heat-receiving heat sink by means of a heat pipe; and a cooling fan that cools the heat-radiating heat sink.

A wavelength conversion member comprises: a substrate; and a wavelength conversion layer. The wavelength conversion layer contains a first phosphor and a second phosphor. The second phosphor has a higher thermal conductivity than the first phosphor. In the wavelength conversion layer, a volume of the second phosphor is larger than a volume of the first phosphor. The wavelength conversion layer includes a first portion and a second portion. The first portion is located closer to the substrate than the second portion, and is in direct contact with the second portion. Thicknesses of the first portion and the second portion are equal to each other. A volume V11 of the first phosphor in the first portion, a volume V12 of the second phosphor in the first portion, a volume V21 of the first phosphor in the second portion, and a volume V22 of the second phosphor in the second portion satisfy V11/V12<V21/V22.