摘要:
A semiconductor light emitting device comprising a light emitting layer disposed between an n-type region and a p-type region is combined with a ceramic layer which is disposed in a path of light emitted by the light emitting layer. The ceramic layer is composed of or includes a wavelength converting material such as a phosphor. Luminescent ceramic layers according to embodiments of the invention may be more robust and less sensitive to temperature than prior art phosphor layers. In addition, luminescent ceramics may exhibit less scattering and may therefore increase the conversion efficiency over prior art phosphor layers.
摘要:
A light emitting device with a light source to emit primary light and a light conversion layer to convert at least a part of the primary light into secondary light includes a CaAlSiN light converting material with a transmissivity of ≧10% to ≦80% for a light in the wavelength range from ≧580 to ≦1000 nm.
摘要:
Light emitting device with a light source to emit primary light and a light conversion layer to convert at least a part of the primary light into secondary light comprising a CaAlSiN light converting material with a transmissivity of >10% to ≦80% for a light in the wavelength range from >580 to ≦lOOOnm.
摘要:
The invention relates to a luminescent material comprising a luminescent particle (20) for generating light (4), wherein the luminescent particle (20) has a structured particle surface for effectively outcoupling the light (4) generated within the luminescent particle (20). Furthermore, the invention relates to a light source comprising a luminescent material according to the invention and a device for exciting the luminescent material.
摘要:
The invention relates to a tri-color lamp for generating white light comprising a phosphor composition comprising a phosphor of general formula (Ba1−x−y−z−SrxCay)2SiO4:Euz, wherein 0≦x≦1, 0≦y≦1 and 0
摘要翻译:本发明涉及一种用于产生白光的三色灯,其包含含有通式(Ba1-xyz-SrxCay)2SiO4:Euz的荧光体的荧光体组合物,其中0≤x≤1,0<= y <= 1 和0
摘要:
The invention relates to a luminescent material comprising a luminescent particle (20) for generating light (4), wherein the luminescent particle (20) has a structured particle surface for effectively outcoupling the light (4) generated within the luminescent particle (20). Furthermore, the invention relates to a light source comprising a luminescent material according to the invention and a device for exciting the luminescent material.
摘要:
An illumination device includes an active layer, such as a blue LED, covered with a first luminescent ceramic converter layer and partially covered with a second luminescent ceramic converter layer. The first and second conversion layers convert primary photons emitted by the active layer into photons of different, longer wavelengths. The color point of the illumination device can be adjusted by adjusting the relative size of the second conversion layer.
摘要:
An electroluminescent device comprising at least one electroluminescent light source (2) with an electroluminescent layer (21) for emitting a primary radiation with an emission characteristic around a mean emission direction (5), and at least one light-converting element (3) for converting at least part of the primary radiation into a secondary radiation, wherein the shape of the light-converting element (3) is adapted to the emission characteristic of the electroluminescent light source (2) so as to generate a defined correlated color temperature as a function of a viewing angle (10).
摘要:
The invention relates to an illumination device (10) that comprises an active layer (11), for example a blue LED, covered with a first luminescent ceramic converter layer (12) and partially covered with a second luminescent ceramic converter layer (13). The first and second conversion layers (12, 13) convert primary photons (λp) emitted by the active layer (11) into photons of different, longer wavelengths (λ1, λ2), wherein the color point of the illumination device (10) can be adjusted by adjusting the relative size of the second conversion layer (13).
摘要:
A phosphor-converted electroluminescent device comprising an electroluminescent light source (LED 2), for emitting primary radiation, a light-converting element (3) having a phosphor material for at least partly converting the primary radiation into secondary radiation, and a filter layer (7a, 7b, 7c, 7d) for absorbing that secondary radiation incident on the filter layer (7a, 7b, 7c, 7d) that lies beyond at least one boundary wavelength in the spectrum of the emitted secondary radiation.