Provided is a sintered phosphor-composite for an LED, having high heat resistance, high thermal conductivity, high luminance, and high conversion efficacy. In addition, there are provided: a light-emitting apparatus which uses the sintered phosphor-composite; and an illumination apparatus and a vehicular headlamp which use the light-emitting apparatus. The sintered phosphor-composite includes a nitride phosphor and a fluoride inorganic binder. The sintered phosphor-composite preferably has an internal quantum efficiency of 60% or more when excited by blue light having a wavelength of 450 nm. Further, the sintered phosphor-composite preferably has a transmittance of 20% or more at a wavelength of 700 nm.

A light source system and a lighting apparatus comprising: a light-emitting module which emits first light along a first light path and second light along a second light path; a wavelength conversion device which received the first light to emit excited light with a different color from that of the first light; and a compensation device which guides the second light and adjusts a luminous intensity distribution of the second light so that the luminous intensity distribution of the second light exiting from the compensation device is substantially identical to that of the excited light. The second light exiting from the compensation device is combined with the excited light to form third light to be emitted from the light source system. The luminous intensity distributions of the first light and the second light in the third light are substantially the same, and illumination light spots have a uniform color.

A light source system and a lighting apparatus comprising: a light-emitting module which emits first light along a first light path and second light along a second light path; a wavelength conversion device which received the first light to emit excited light with a different color from that of the first light; and a compensation device which guides the second light and adjusts a luminous intensity distribution of the second light so that the luminous intensity distribution of the second light exiting from the compensation device is substantially identical to that of the excited light. The second light exiting from the compensation device is combined with the excited light to form third light to be emitted from the light source system. The luminous intensity distributions of the first light and the second light in the third light are substantially the same, and illumination light spots have a uniform color.

The present invention relates to a light emitting device comprising: a substrate; a translucent light mixing element arranged on the substrate; a color converting element arranged on top of the translucent light mixing element and arranged such that light from the translucent light mixing element is coupled into the color converting element; and a laser diode configured to emit light of a first color into the translucent light mixing element; wherein the color converting element is configured to convert a part of the light of the first color to a second color, to mix light of the first color with light of the second color to generate light of a third color, and to emit light of the third color; and wherein the translucent light mixing element has a thermal conductivity exceeding 10 W/mK.

The present disclosure provides a method for manufacturing quantum dot color film substrate and quantum dot color film substrate. The method is to form a quantum dot adhesive by mixing a red quantum dot material, a green quantum dot material and a photoinitiator in a thermosetting adhesive. The photoinitiator itself does not destroy fluorescence properties of quantum dot, but the photoinitiator is cleaved and can quenching the fluorescence of quantum dot after UV irradiation. A selective quenching quantum dot layer is obtained after coating a quantum dot adhesive uniformly on a color filter layer, and the light mask is used to irradiate the quantum dot adhesive on the blue sub-pixel region. Free radicals are generated by cleaving photoinitiator and are quenching the quantum dot material directly; the method is capable of meeting requirement of high gamut, simple preparation process and low cost.

A light source converter including a non-homogeneous conversion core optically coupled to a light source. The conversion core having a transmitting medium comprised of a plurality of layers, a proximal end, a distal end, and a length extending between the proximal end and the distal end. The light source converter further including a plurality of phosphor particles volumetrically suspended in each of the plurality of layers of the transmitting medium. A density of the plurality of phosphor particles in one of the plurality of layers proximate the proximal end of the conversion core differs from a density of the plurality of phosphor particles in another of the plurality of layers proximate the distal end of the transmitting medium.

A light source converter including a non-homogeneous conversion core optically coupled to a light source. The conversion core having a transmitting medium comprised of a plurality of layers, a proximal end, a distal end, and a length extending between the proximal end and the distal end. The light source converter further including a plurality of phosphor particles volumetrically suspended in each of the plurality of layers of the transmitting medium. A density of the plurality of phosphor particles in one of the plurality of layers proximate the proximal end of the conversion core differs from a density of the plurality of phosphor particles in another of the plurality of layers proximate the distal end of the transmitting medium.

A luminaire includes a white light LED light source emitting a light beam that that is filtered by first and second color filters. An optical device modifies the filtered light beam. A control system receives a commanded value for the optical device and responds by causing the optical device to move based on the commanded value; determining a Duv change in the light beam caused by the optical device; determining positions for the color filters based on the Duv change, a current correlated color temperature (CCT) isotherm value, and a current Duv value; and moving the color filters to their determined positions. The control system may alternatively receive a command with a Duv value and respond by determining color filters positions based on the received Duv value and a current CCT isotherm value; and moving the color filters to their determined positions.

A luminaire includes a white light LED light source emitting a light beam that that is filtered by first and second color filters. An optical device modifies the filtered light beam. A control system receives a commanded value for the optical device and responds by causing the optical device to move based on the commanded value; determining a Duv change in the light beam caused by the optical device; determining positions for the color filters based on the Duv change, a current correlated color temperature (CCT) isotherm value, and a current Duv value; and moving the color filters to their determined positions. The control system may alternatively receive a command with a Duv value and respond by determining color filters positions based on the received Duv value and a current CCT isotherm value; and moving the color filters to their determined positions.

A lighting apparatus includes multiple LED packages, a substrate and a driver. The LED package module includes a package housing, a LED chip and a second LED chip, a first fluorescent layer, and a second fluorescent layer. The first fluorescent layer is stacked below the second fluorescent layer. A light emitting area of the first chip is placed in the first fluorescent layer. A light emitting area of the second chip is placed in the second fluorescent.