The invention relates to an area light decorative element (1) comprising an optically activatable symbol body (2) at least partially formed of a transparent optically activatable first material (9) and configured to emit visible light in response to the optically activatable symbol body (2) being excited with electromagnetic radiation in a predetermined first frequency range, a light element (3) consisting of a transparent material, wherein the optically activatable symbol body (2) is arranged in the light element (3), a touch-sensitive surface (4) disposed in a first area (5) of a surface of the light element (3) above the optically activatable symbol body (2) for detecting a touch of a user in the first area (5), and an illumination unit (6) which is arranged to emit visible light in a predetermined visible frequency range (22) into the light element (3) and, together with the visible light, also to emit electromagnetic radiation in the predetermined first frequency range into the light element (3).

The invention relates to an area light decorative element (1) comprising an optically activatable symbol body (2) at least partially formed of a transparent optically activatable first material (9) and configured to emit visible light in response to the optically activatable symbol body (2) being excited with electromagnetic radiation in a predetermined first frequency range, a light element (3) consisting of a transparent material, wherein the optically activatable symbol body (2) is arranged in the light element (3), a touch-sensitive surface (4) disposed in a first area (5) of a surface of the light element (3) above the optically activatable symbol body (2) for detecting a touch of a user in the first area (5), and an illumination unit (6) which is arranged to emit visible light in a predetermined visible frequency range (22) into the light element (3) and, together with the visible light, also to emit electromagnetic radiation in the predetermined first frequency range into the light element (3).

A display unit including: a plurality of first light emitting regions from which a first color light is to be extracted; a plurality of second light emitting regions from which a color light different from the first color light is to be extracted; a first light emitting device provided in each of the plurality of first light emitting regions and emitting the first color light; a second light emitting device provided in each of the plurality of second light emitting regions and emitting the first color light having a wavelength variation greater than a wavelength variation of the first color light to be emitted from the first light emitting device; and a wavelength converter provided in the second light emitting regions and converting a wavelength of the first color light emitted from the second light emitting device.

A display unit including: a plurality of first light emitting regions from which a first color light is to be extracted; a plurality of second light emitting regions from which a color light different from the first color light is to be extracted; a first light emitting device provided in each of the plurality of first light emitting regions and emitting the first color light; a second light emitting device provided in each of the plurality of second light emitting regions and emitting the first color light having a wavelength variation greater than a wavelength variation of the first color light to be emitted from the first light emitting device; and a wavelength converter provided in the second light emitting regions and converting a wavelength of the first color light emitted from the second light emitting device.

A light conversion package for a semiconductor light source includes a light conversion block, a substrate, and an interconnector. The light conversion block is positioned to receive incident light from the semiconductor light source and acts to convert the incident light to light having a different spectral distribution. The interconnector attaches the light conversion block to the substrate and limits a thermal resistance between the light conversion block and the substrate so that the substrate can efficiently sink heat from the light conversion block. The interconnector and the substrate together may still provide high reflectivity.

A light conversion package for a semiconductor light source includes a light conversion block, a substrate, and an interconnector. The light conversion block is positioned to receive incident light from the semiconductor light source and acts to convert the incident light to light having a different spectral distribution. The interconnector attaches the light conversion block to the substrate and limits a thermal resistance between the light conversion block and the substrate so that the substrate can efficiently sink heat from the light conversion block. The interconnector and the substrate together may still provide high reflectivity.

An optical device includes a metal reflective layer substantially made of a metal material, a first light transmissive layer disposed on the metal reflective layer, an optical multilayer reflective film disposed on the first light transmissive layer and including a plurality of sublayers stacked on each other and having different refractive indexes, and a wavelength converting layer disposed on the optical multilayer reflective film and containing a fluorescent material capable of absorbing incident excitation light and generating fluorescent light having a lower energy. The wavelength converting layer is capable of generating mixed light containing the excitation light and the fluorescent light in response to irradiation with the excitation light.

Provided is a transparent phosphor in which one surface is rougher than the other surface.

A short wavelength infrared (SWIR) energy emitting system or material for producing SWIR energy from an emission source emitting electromagnetic energy. The SWIR energy system or material comprises a phosphor material, an electromagnetic energy blocking member, a substrate for delivering the system or material to an electromagnetic energy emission source, and optionally, a securing member. The SWIR energy system or material may be in the form of a tape, sheet, or other laminar material capable of producing short wave infrared emission when excited at wavelengths shorter than that of the emission.

A short wavelength infrared (SWIR) energy emitting system or material for producing SWIR energy from an emission source emitting electromagnetic energy. The SWIR energy system or material comprises a phosphor material, an electromagnetic energy blocking member, a substrate for delivering the system or material to an electromagnetic energy emission source, and optionally, a securing member. The SWIR energy system or material may be in the form of a tape, sheet, or other laminar material capable of producing short wave infrared emission when excited at wavelengths shorter than that of the emission.