Abstract:
The invention relates to a light emitting device, especially a LED comprising a SiAION material with a transparency of ≥ 10 % to ≤ 85 % for light in the wavelength range from ≥ 550 nm to ≤ 1000 nm.
Abstract:
The invention relates to a light source (1) comprising at least one light emitting device (2) capable of emitting electromagnetic radiation in the range from near ultraviolet to blue in response to a driving signal of a driving means (6). A luminescent cover (3) comprises at least a first activator (A 1 ) and a second activator (A 2 ) to convert said electromagnetic radiation into visible light. The first activator and second activator have different response characteristics and the driving means (6) is adapted to vary said driving signal to control the spectrum of said visible light for said light source. Preferably, the driving signal is a pulsed driving signal and said driving means is adapted to vary the pulse width of said pulsed driving signal. Accordingly, the light source (1) has a dimming performance resembling that of an incandescent lamp.
Abstract:
The invention relates to a LED comprising a substrate (10), a first electrode layer and a thin colloidal layer (20) located between the substrate and the first electrode layer, wherein the LED further comprises a smoothing means located within the colloidal layer and/or between the colloidal layer and the first electrode layer so that the outer surface of the colloidal layer facing the first electrode layer has a roughness R a = 30 nm and R a =1 nm, preferably R a = 10 nm and R a = 3 nm and more preferably R a = 5 nm and R a = 3 nm.
Abstract translation:本发明涉及一种LED,其包括位于基板和第一电极层之间的基板(10),第一电极层和薄胶体层(20),其中LED还包括位于胶体层内的平滑装置和/ 或者在胶体层和第一电极层之间,使得面向第一电极层的胶体层的外表面具有粗糙度R sub = 30nm和R a a = 1nm,优选R a a = 10nm,R a a 3 = 3nm,更优选R a a 5 = 5nm,R a a / 3> 3nm。
Abstract:
The invention relates to a plasma picture screen with a powder layer (8) in the plasma cells, which layer has a low dielectric constant K and thus reduces the discharge capacitance in the plasma cell. Such a plasma picture screen has an enhanced efficiency and an enhanced luminance.
Abstract:
The invention relates to a plasma picture screen with a powder layer (8) in the plasma cells, which layer has a low dielectric constant K and thus reduces the discharge capacitance in the plasma cell. Such a plasma picture screen has an enhanced efficiency and an enhanced luminance.
Abstract:
A conversion element (3) comprising a ceramic material (31) with a multiplicity of pores (32) provided for at least the partial absorption of at least one primary radiation (52) and for transforming the primary radiation (52) into at least one secondary radiation (53), wherein the conversion element (3) has a density greater than or equal to 97% of the theoretical solid-state density of the ceramic material (31), and the pores (32) in the conversion element (3) have a diameter substantially between 200 nm and 5000 nm.
Abstract:
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).
Abstract:
An Illumination system comprising a radiation source and a monolithic ceramic luminescence converter comprising at least one phosphor capable of absorbing a part of the light emitted by the radiation source and emitting light of a wavelength different from that of the absorbed light, wherein said at least one phosphor is an europium(II)-activated oxonitridosilicate of the general formula (Sr1-a-b-c-d-e- fCabBacMgdZneCef)Six-gGegNyOz:Eua, wherein 0.001
Abstract:
An intermediate layer (11) comprises a basic material such as a conductive polymer that taken alone still absorbs some light. Combined with colloidal particles (12) the intermediate layer (11) becomes almost fully transparent. An electroluminescent arrangement with an intermediate layer (11) that is almost fully transparent because of colloidal particle (12) comprised therein has an increased efficiency and thus requires less energy for the same luminescent properties.
Abstract:
An organic light-emitting diode comprising a front electrode member (2), a counterelectrode member (5), an organic electroluminescent member (4) comprising an organic electroluminescent material arranged between the front electrode member and the counterelectrode member, and a UV-protective filter member (7).