摘要:
Disclosed is a fluorescent composition for a low-pressure discharge lamp having great light efficiency and a high color temperature. Said fluorescent composition contains fluorescent materials emitting in the red wavelength range from the group comprising europium-doped yttrium oxide and cerium-doped and manganese-doped gadolinium zinc magnesium pentaborate, fluorescent materials emitting in the green wavelength range from the group comprising cerium-doped and terbium-doped lanthanum phosphate and/or terbium-doped cerium magnesium aluminate and/or terbium-doped cerium magnesium pentaborate, as well as an optional fluorescent material of the type europium-doped barium magnesium aluminate, which emits in the blue wavelength range. The invention is characterized in that the fluorescent composition additionally contains at least one fluorescent material emitting in the blue or blue-green wavelength range from the group comprising manganese-doped and europium-doped manganese strontium barium magnesium aluminate or europium-doped and manganese-doped barium magnesium aluminate, europium-doped strontium aluminate, europium-doped strontium barium calcium chloroapatite, and europium-doped strontium borophosphate.
摘要:
Disclosed is an LED that has a low color temperature of up to 3500 K and comprises a blue-emitting LED as well as two luminous substances which are mounted upstream thereof. A first luminous substance belongs to the class of oxinitridosilicates, contains a cation M which is doped with divalent europium, and is of general formula M(1-c)Si2O2N2:Dc, wherein M = Sr or M = Sr(1-x-y)BayCax with the stipulation x+y
摘要:
Disclosed is an LED comprising inorganic luminous substance. An LED chip emits primary radiation ranging between 300 and 470 nm, said radiation being partly or fully converted into longer-wave radiation by means of at least one luminous substance which is exposed to the primary radiation of the LED. The conversion is achieved at least with the aid of a luminous substance whose average particle size d50 ranges between 1 and 50 nm, preferably between 2 and 25 nm.
摘要:
The invention relates to a dielectric barrier discharge lamp with a fluorescent mixture and improved colour reproduction. The fluorescent mixture comprises at least the fluorescent components: A) cerium-activated yttrium aluminate (Y3AI5O12:Ce) and B) europium-activated barium magnesium aluminate (BaMgAI10O17:Eu). To further improve the colour reproduction and to match the emission spectrum to the film sensitivity the fluorescent mixture optionally comprises the additional fluorescent components: C) cerium- and manganese-activated gadolinium magnesium zinc pentaborate (Gd(Zn,Mg)B5O10:(Ce, Mn)) and/or the fluorescent component D) europium-activated strontium aluminate (Sr4AI14O25:Eu).
摘要:
The invention relates to a luminous matter having garnet structure which is characterized by the addition of Si. It is especially suitable for the photonic excitation by light sources having an emission wavelength of from 250 and 550 nm.
摘要:
Disclosed is an illumination system that simultaneously utilizes the blue, green, and red color mixing principle (RGB mixing) and the principle according to which a radiation emitted primarily by an LED is converted into light having a greater wavelength by means of a luminous substance, said luminous substance absorbing said radiation. At least two LEDs are used, a first LED emitting primarily in the range from 340 to 470 nm (dominant wavelength) and a second LED emitting in the red range between 600 and 700 nm (dominant wavelength). The green component is generated by the fact that the primary radiation of the first LED is converted at least in part by a green-emitting luminous substance that belongs to the class of oxinitridosilicates, comprises a cation M, and is of general formula M(1-c)Si2O2N2:Dc. M contains Sr as a component while D is doped with divalent europium, wherein M = Sr or M = Sr(1-x-y)BayCax with the stipulation x+y
摘要翻译:照明系统同时使用蓝色,绿色和红色(RGB混合)的混色原理,以及通过吸收该辐射的荧光体将由LED发射的初级辐射转换成具有较长波长的光的原理, 使用至少两个LED,其中第一LED主要在340至470nm(主波长)的范围内发射,并且第二LED在600至700nm(主波长)的红色区域中发射,其中绿色分量为 由第一LED的初级辐射产生的至少部分地由绿色发光的磷光体转换,所使用的绿色发光荧光体是具有阳离子M和经验式M(1-c)的氧化硅硅酸盐类的荧光体 )Si 2 O 2 N 2:Dc,M包含Sr作为组分,D掺杂有二价铕,其中M = Sr或M = Sr(1-x-y)BayCax,x + y <0.5,所述氧氮硅酸盐完全或主要包含 高温稳定 e修改HT。
摘要:
Disclosed is a luminous substance that belongs to the class of oxinitridosilicates, comprises a cation M which is doped with divalent europium, and is of general formula M(1-c)Si2O2N2:Dc, wherein M = Sr or M = Sr(1-x-y)BayCax with the stipulation x+y
摘要:
The invention relates to a dielectric barrier discharge lamp with a fluorescent mixture and improved colour reproduction. The fluorescent mixture comprises at least the fluorescent components: A) cerium-activated yttrium aluminate (Y3AI5O12:Ce) and B) europium-activated barium magnesium aluminate (BaMgAI10O17:Eu). To further improve the colour reproduction and to match the emission spectrum to the film sensitivity the fluorescent mixture optionally comprises the additional fluorescent components: C) cerium- and manganese-activated gadolinium magnesium zinc pentaborate (Gd(Zn,Mg)B5O10:(Ce, Mn)) and/or the fluorescent component D) europium-activated strontium aluminate (Sr4AI14O25:Eu).