摘要:
Phosphor particles of generally spherical shape have an average particle diameter of 5-50 µm and an average roundness of up to 0.3. The phosphor includes a garnet phase having formula: (A 1-x B x ) 3 C 5 O 12 wherein A is Y, Gd, or Lu , B is Ce, Nd, or Tb, C is Al or Ga, and 0.002 ≤ x ≤ 0.2.
摘要翻译:通常为球形的荧光体颗粒的平均粒径为5-50μm,平均圆度高达0.3。 荧光体包括具有式(A 1-x B x)3 C 5 O 12的石榴石相,其中A为Y,Gd或Lu,B为Ce,Nd或Tb,C为Al或Ga,0.002‰ ¤x‰¤0.2。
摘要:
Phosphor particles are provided in the form of spherical polycrystalline secondary particles consisting of a multiplicity of primary particles, including a garnet phase having the composition: (A x ByC z ) 3 C 5 O 12 wherein A is Y, Gd, and/or Lu, B is Ce, Nd, and/or Tb, C is Al and/or Ga, and x, y and z are in the range: 0.002
摘要:
A wavelength converting member is prepared by coating the surface of a polycrystalline transparent ceramic substrate with an activator and firing the activator-coated ceramic substrate for letting the activator diffuse into the ceramic substrate from its surface.
摘要:
A polycrystalline sintered ceramic including (A) a garnet phase and (B) a perovskite, monoclinic or silicate phase wherein fine grains of phase (B) are included and dispersed in phase (A) is used as a wavelength converting member. Since the light transmitting through the wavelength converting member is scattered at the interface between the garnet phase and the perovskite, monoclinic or silicate phase, a light emitting device including the wavelength converting member produces light of more uniform color with a minimized loss thereof.
摘要:
Phosphor particles are provided in the form of spherical polycrystalline secondary particles consisting of a multiplicity of primary particles, including a garnet phase having the composition: (A x ByC z ) 3 C 5 O 12 wherein A is Y, Gd, and/or Lu, B is Ce, Nd, and/or Tb, C is Al and/or Ga, and x, y and z are in the range: 0.002
摘要翻译:以由多种一次粒子组成的球形多晶二次粒子的形式提供荧光体颗粒,其包括具有以下组成的石榴石相:(A x ByC z)3 C 5 O 12其中A为Y,Gd和/或Lu ,B是Ce,Nd和/或Tb,C是Al和/或Ga,x,y和z在0.002
摘要:
A polycrystalline sintered ceramic including (A) a garnet phase and (B) a perovskite, monoclinic or silicate phase wherein fine grains of phase (B) are included and dispersed in phase (A) is used as a wavelength converting member. Since the light transmitting through the wavelength converting member is scattered at the interface between the garnet phase and the perovskite, monoclinic or silicate phase, a light emitting device including the wavelength converting member produces light of more uniform color with a minimized loss thereof.
摘要:
An improvement is obtained in the method for the preparation of pellets of a metal halide as a light-emitting source of metal halide lamps, of which an extremely low moisture content is essential, in order not to increase the moisture content of the metal halide during pulverization and compression molding of the metal halide. Thus, a metal halide dehumidified in advance to have a moisture content not exceeding 5 ppm is pulverized and compression-molded in an atmosphere of an inert gas of which the dew point is -60 °C or lower so that substantially no moisture absorption takes place during processing.