公开(公告)号：US20150077972A1

公开(公告)日：2015-03-19

申请号：US14488162

申请日：2014-09-16

申请人： Nichia Corporation

发明人： Takafumi Sugiyama ,  Eiichiro Okahisa ,  Kazutaka Tsukayama ,  Chiaki Masutomi

IPC分类号： F21V9/08 ,  F21V13/08 ,  F21V8/00 ,  F21V9/16

摘要： A light emitting device includes a semiconductor laser element configured to emit laser light having a peak wavelength of 460 nm or less; a base body having a through-hole through which the laser light passes from a bottom to a top of the base body; a fluorescent member disposed so as to close the through-hole; and a filter configured to reflect fluorescence from the fluorescent member, the filter being disposed below the fluorescent member at a position above and spaced apart from a plane including a lower end of the through-hole. At least in a portion lower than the filter, an inner surface of the base body defining the through-hole includes an inclination surface that is inclined such that the through-hole expands from a lower part of the through-hole toward an upper part of the through-hole. A reflection layer containing aluminum is formed on the inclination surface.

摘要翻译： 发光器件包括配置为发射峰值波长为460nm以下的激光的半导体激光元件; 基体，其具有通孔，激光从底部通过所述通孔从底部到顶部; 布置成闭合通孔的荧光部件; 以及被配置为从荧光部件反射荧光的过滤器，所述过滤器设置在所述荧光部件的下方位于与包括所述通孔的下端的平面上方并与之隔开的位置。 至少在低于过滤器的部分中，限定通孔的基体的内表面包括倾斜表面，其倾斜使得通孔从通孔的下部朝向上述通孔的上部扩展 通孔。 在倾斜面上形成有铝的反射层。