发明授权
US06373188B1 Efficient solid-state light emitting device with excited phosphors for producing a visible light output 有权
具有用于产生可见光输出的激发磷光体的高效固态发光器件

  • 专利标题: Efficient solid-state light emitting device with excited phosphors for producing a visible light output
  • 专利标题(中): 具有用于产生可见光输出的激发磷光体的高效固态发光器件
  • 申请号: US09218816
    申请日: 1998-12-22
  • 公开(公告)号: US06373188B1
    公开(公告)日: 2002-04-16
  • 发明人: Burgess R. JohnsonWei Yang
  • 申请人: Burgess R. JohnsonWei Yang
  • 主分类号: H05B3312
  • IPC分类号: H05B3312
Efficient solid-state light emitting device with excited phosphors for producing a visible light output
摘要:
A more efficient solid-state light emitting device in which phosphors excited by radiation produce visible light. The efficiency is increased by, for example, providing a reflector adjacent to the phosphor layer for reflecting at least some of the radiation that passes through the phosphor, back into the phosphor. The reflector may also reflect at least some of the visible light that is emitted by the phosphor toward a designated light output. Alternatively, or in addition to, the lateral edges of the active region of the radiation source can be at least partially surrounded by a visible light emitting phosphor and a reflector. This allows more of the radiation to interact, and thus excite, the phosphor material, making the device more efficient. The reflector also may reduce optical and radiation cross talk between adjacent light emitting devices.
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