The invention describes a light converting device comprising: a bonded layer stack comprising a light converter and a diamond layer, wherein the diamond layer is bonded to a bonding surface of the light converter, wherein the light converter is adapted to convert laser light to converted light, wherein a peak emission wavelength of the converted light is in a longer wavelength range than a laser peak emission wavelength of the laser light, wherein a refractive index of the diamond layer is bigger than a refractive index of the light converter, and a light outcoupling structure attached to a first surface of the bonded layer stack, wherein a second surface of the bonded layer stack is a light-entrance surface arranged to receive the laser light, wherein the bonding surface is arranged between the first surface and the second surface of the bonded layer stack, wherein a refractive index of the light outcoupling structure is at least 90% of the refractive index of the light converter, and wherein the light outcoupling structure is optically coupled to the first surface of the bonded layer stack such that total internal reflection of light traversing an emission path from the light-entrance surface to the light outcoupling structure is reduced.

The invention further describes a laser-based light source comprising such a light converting device and a vehicle headlight comprising such a laser-based light source.

[Object] Collection efficiency of a reflector that reflects a converted beam, which is converted from a pump beam by a phosphor, and projects the resultant as a projection beam is increased.

[Solution] An optical member (4) of a light source unit (1) deflects a pump beam (PB) so that a first angle of incidence (l) of a pump beam (PBX) relative to a surface of a phosphor (3) is larger than a second angle of incidence (a2) of the pump beam (PB), which is incident on the optical member (4), relative to the surface of the phosphor (3).

[Object] Collection efficiency of a reflector that reflects a converted beam, which is converted from a pump beam by a phosphor, and projects the resultant as a projection beam is increased.

[Solution] An optical member (4) of a light source unit (1) deflects a pump beam (PB) so that a first angle of incidence (l) of a pump beam (PBX) relative to a surface of a phosphor (3) is larger than a second angle of incidence (a2) of the pump beam (PB), which is incident on the optical member (4), relative to the surface of the phosphor (3).

A light source device includes a light source unit that emits laser light, a condensing lens, and a transmissive fluorescent body. The condensing lens condenses laser light emitted from the light source unit. The transmissive fluorescent body is provided with, inside thereof, a condensing point of laser light condensed by the condensing lens, and emits fluorescent light from a portion through which laser light passes.

A method of manufacturing a light-emitting device includes: providing a light source having a first substrate and a light-emitting element coupled to the first substrate, and a second substrate defining one or more recesses or one or more through-holes; and positioning the second substrate above the first substrate, and adjusting a position of the second substrate such that the one or more recesses or the one or more through-holes define at least a part of one or more positioning holes respectively positioned at predetermined distances from a light-emitting part of the light source in a top plan view.

A lighting apparatus includes a laser that emits laser light. A transmission component transmits the laser light. The laser light transmitted by the transmission component enters and is emitted by an optical connector. A wavelength converter emits wavelength-converted light according to the laser light emitted from the optical connector. A lens causes the laser light emitted from the optical connector to enter the wavelength converter. A luminaire emits the wavelength-converted light. The luminaire includes a holder that removably holds the optical connector. The optical connector includes: an optical component that is light-transmissive, mixes the laser light that enters, and emits the mixed laser light; and a case that has a light-blocking property and houses the optical component and part of the transmission component. The lens is in an optical path from the optical connector to the wavelength converter.

An electro-optical device includes a cable connected to an electronic component, a storage casing that stores the electronic component and an optical component and has an insertion hole through which the cable is inserted, a fixing portion that is fixed to the storage casing, and an elastic portion that is fixed to the fixing portion. The fixing portion has a first opposing portion and a second opposing portion that are disposed opposite to each other with the cable that protrudes from the insertion hole, interposed therebetween, and the elastic portion includes a first protruding portion and a second protruding portion, and the first protruding portion and the second protruding portion are pressed against each other with the cable interposed therebetween and are disposed so as to surround a vicinity of the cable.

Aspects of the present disclosure relate to a lighting device that is configured to provide light with a high color rendering index (CRI) value and/or uniform planar illumination. The lighting device may include a circuit board, a light emitting diode (LED) mounted to the circuit board and configured to emit broad spectrum light having a first CRI value, a photo-luminescent material disposed above the LED mounted to the circuit board configured to increase the CRI of the broad spectrum light emitted by the LED from the first CRI value to a higher, second CRI value, and an elastomer encapsulating at least part of the circuit board. Additionally, the lighting device may include a lens disposed over the LED configured to increase the maximum emission angle of light from the LED and a diffuser disposed above the lens and configured to diffuse the broad spectrum light.

Aspects of the present disclosure relate to a lighting device that is configured to provide light with a high color rendering index (CRI) value and/or uniform planar illumination. The lighting device may include a circuit board, a light emitting diode (LED) mounted to the circuit board and configured to emit broad spectrum light having a first CRI value, a photo-luminescent material disposed above the LED mounted to the circuit board configured to increase the CRI of the broad spectrum light emitted by the LED from the first CRI value to a higher, second CRI value, and an elastomer encapsulating at least part of the circuit board. Additionally, the lighting device may include a lens disposed over the LED configured to increase the maximum emission angle of light from the LED and a diffuser disposed above the lens and configured to diffuse the broad spectrum light.

Included are: a laser light source which emits a plurality of laser beams; an aspherical lens which the plurality of laser beams emitted from the laser light source enters and which converts the plurality of laser beams into convergent beams; and a phosphor which is irradiated with the convergent beams from the aspherical lens as excitation beams to generate fluorescence, wherein the plurality of laser beams have different spread angles in a horizontal direction and a vertical direction and enter the aspherical lens while arranged in a direction in which the spread angle is smaller, from among the horizontal direction and the vertical direction, and the aspherical lens has a function of equalizing a light intensity in a direction in which the spread angle is larger, from among the horizontal direction and the vertical direction.