Provided is a wavelength conversion member including: a wavelength conversion layer including at least one kind of quantum dots that are excited by excitation light to emit fluorescence and are dispersed in an organic matrix; and a barrier layer that is provided adjacent to at least one main surface of the wavelength conversion layer and includes silicon nitride and/or silicon oxynitride as a major component, in which the organic matrix is obtained by curing a curable composition including at least an alicyclic epoxy compound and includes a chemical structure A which is bonded to silicon nitride and/or silicon oxynitride as a major component of the barrier layer.

Provided is a wavelength conversion film-forming composition which forms a wavelength conversion film by being applied to a substrate to form a coating film and curing the coating film, the wavelength conversion film-forming composition including at least quantum dots, a volatile component, and a binder that is soluble in the volatile component and/or a binder precursor that is soluble in or compatible with the volatile component, in which the wavelength conversion film-forming composition is gellable in the presence of the volatile component.

A polymerizable composition provides a high brightness and suppressed decrease in brightness in an outer peripheral region when used in a wavelength conversion member, a wavelength conversion member, a backlight unit, and a liquid crystal display device. The polymerizable composition includes quantum dots having surfaces coordinated with a ligand, a polymerizable compound, and a dispersant, in which the ligand is a molecule that includes a saturated hydrocarbon chain having 6 or more carbon atoms and a coordinating group, a Log P value of the polymerizable compound is 3.0 or lower, the dispersant has a nonpolar and a polar portion in a molecule, and the nonpolar portion is at least one selected from the group consisting of a saturated hydrocarbon chain having 6 or more carbon atoms, an aromatic ring, and a saturated aliphatic ring. The wavelength conversion member, the backlight unit, and the liquid crystal display device include the polymerizable composition.

In various embodiments, a lighting device is provided. The lighting device includes a phosphor volume for at least partial wavelength conversion of primary light into secondary light, a primary light semiconductor light source for irradiating the phosphor volume with primary light, a measurement light generating arrangement for generating measurement light having a spectral composition outside the primary light and the secondary light, a measurement light detector sensitive to the measurement light, and a measurement light filter, which is fixedly connected to the phosphor volume and is optically arranged between the measurement light generating arrangement and the measurement light detector.

A method and device for emitting electromagnetic radiation at high power using nonpolar or semipolar gallium containing substrates such as GaN, AlN, InN, InGaN, AlGaN, and AlInGaN, is provided. In various embodiments, the laser device includes plural laser emitters emitting green or blue laser light, integrated a substrate.

Provided are a light conversion substrate intended for converting an excited beam into a conversion beam, and a light emitting package including the light conversion substrate, the light conversion substrate being implemented in a structure in which side parts of the light conversion substrate for converting a beam emitted from a light emitting element are formed to have different tapers so that uniform color distribution can be implemented all over the entire surface of the light conversion substrate upon packaging the light conversion substrate with the light emitting element.

A vehicle trim light assembly is provided herein. The trim light assembly includes a substrate mated to a housing. A light source and luminescent structure are disposed within the substrate and housing. The light source provides light at a first wavelength. The luminescent structure is excited by light at the first wavelength thereby emitting light at a second wavelength through the housing to provide lighting to an occupant within the vehicle.

Disclosed are an optical member, a display device having the same, and a method of fabricating the same. The optical member includes a receiving part having an empty space therein, a host in the receiving part, a plurality of wavelength conversion particles in the host, a sealing part in the receiving part, and a pre-treatment layer between the sealing part and an inner surface of the receiving part.

A lighting assembly 100, a lamp and a luminaire are provided. The lighting assembly 100 comprises a light exit window 114, a light source 110 and a partially light transmitting reflector 102. The light source 110 emits light in at least a first narrow band of the visible spectrum towards the light exit window 114. The partially light transmitting reflector 102 is arranged at the light exit window 114 and reflects substantially all light of the visible spectrum except in at least the first narrow band of the visible spectrum. The partially light transmitting reflector is light transmitting in the first narrow band.

The present invention discloses a method for constructing a universal LED bulb, a flange snap ring type LED bulb and a lamp. A heat conductive bracket (3) with a flange is used as a structure supporting main body of the bulb to establish an optical engine core member of the LED bulb. An inner snap ring (81) fixed to the heat conductive bracket (3) is used to support the optical engine core member in an auxiliary manner. The optical engine core member is composed of the heat conductive bracket (3), an optical engine module (4), the inner snap ring (81), an inner cover (6), an electric connector (11) and a light distribution optical lens (7). The optical engine module (4) is made up of an optical engine die plate, an LED chip and a relevant wiring by bonding and packaging, or is further integrated with a power supply drive chip.