摘要:
An organic electroluminescent light source has at least one substrate and layers that are arranged on the substrate. The layers include electrodes of which at least one electrode is transparent and one acts as an anode and one as a cathode, and at least one organic electroluminescent layer that is arranged between the electrodes. The organic electroluminescent layer has regions that emit blue light and/or green light, and at least one phosphor layer that is arranged in the beam path of the light leaving the organic electroluminescent light source and that partly covers the electroluminescent 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:
Disclosed is a light module package including a mounting substrate for mounting and electrically contacting at least one light emitting diode and a ceramic layer disposed in a path of light emitted by the light emitting diode. The ceramic layer includes a wavelength converting material and the light emitting diode is disposed between the ceramic layer and the mounting substrate. The light module package also includes a light sensor disposed at the mounting substrate for detecting a luminous output of the light emitting diode in order to control the brightness and/or the color of the light leaving the light module. The ceramic layer is only partly translucent to shield the light sensor against ambient light.
摘要:
A white light LED is described that uses an LED die that emits visible blue light in a wavelength range of about 450-470 nm. A red phosphor or quantum dot material converts some of the blue light to a visible red light having a peak wavelength between about 605-625 nm with a full-width-half-maximum (FWHM) less than 80 nm. A green phosphor or quantum dot material converts some of the blue light to a green light having a FWHM greater than 40 nm, wherein the combination of the blue light, red light, and green light produces a white light providing a color rendering of Ra,8>90 and a color temperature of between 2500K-5000K. Preferably, the red and green converting material do not saturate with an LED die output of 100 W/cm2 and can reliably operate with an LED die junction temperature over 100 degrees C.
摘要翻译:描述了使用发射在约450-470nm的波长范围内的可见蓝光的LED管芯的白光LED。 红色荧光体或量子点材料将一些蓝色光转换成具有在约605-625nm之间的峰值波长和小于80nm的全宽半最大值(FWHM)的可见红光。 绿色荧光体或量子点材料将一些蓝色光转换成具有大于40nm的FWHM的绿色光,其中蓝色光,红色光和绿色光的组合产生提供Ra的显色性的白色光, 8> 90,色温在2500K-5000K之间。 优选地,红色和绿色转换材料对于100W / cm 2的LED管芯输出不饱和,并且可以在LED管芯结温超过100摄氏度时可靠地工作。
摘要:
The present invention relates to a light emitting device (30) having at least a first (10) and a second light emitting element (20), with the first light emitting element (10) emitting a first light (1) and the second light emitting element (20) emitting a second light (2), each light emitting element (10,20) being an OLED (10,20), the OLED (10,20) comprising a sandwich structure with a substrate (14,24), a first (11,21) and a second electrode (12,22) and an organic layer (13,23) being provided between the first (11,21) and the second electrode (12,22), a light (3) leaving the light emitting device (30), wherein at least a part of said light (3) is provided by a superposition of the first (1) and the second light (2).
摘要:
A tanning device is described by which the bluish light emitted by mercury vapor lamps is converted into yellow or white light. For this purpose, the mercury lamps, or the sheets of transparent plastics material covering these lamps, are doped or coated with one or more organic or inorganic fluorescent dyes that partially absorb the blue light emitted by the mercury lamps and convert it into light of wavelengths of 550 to 650 nm.
摘要:
A process for recovering an active catalyst component from a process stream containing, in addition to dissolved active catalyst component, also at least aldols, acetals and/or esters, includes admixing an alcohol component comprising at least one C1 to C10 alcohol, with the process stream to form solid active catalyst component. The solid active catalyst component is recovered from a residual alcohol-rich phase.
摘要:
An organic electroluminescent display device comprising a front electrode member, a counterelectrode member, an organic electroluminescent member arranged between the front electrode member and the counterelectrode member, and an optical filter member with a cut-off filter to absorb electromagnetic radiation whose wavelength is below a cut-off wavelength λk, and to transmit electromagnetic radiation whose wavelength is above a cut-off wavelength λk, has an improved contrast under bright ambient light conditions.
摘要:
The invention describes a color picture screen with an enhanced contrast. The color picture screen comprises a color filter layer between the picture screen glass and the phosphor layer, which filter layer comprises a red pigment in the areas of the red phosphors, a blue pigment in the areas of the blue phosphors, and a blue or a red pigment in the areas of the green phosphors.
摘要:
This invention relates to a plasma picture screen provided with a phosphor layer which comprises an intrinsically pigmented phosphor. The plasma picture screen has an improved value for the luminance contrast performance without the efficiency of the phosphors being detracted from.