发明申请
US20090231833A1 LIGHT EMITTING DEVICE PROVIDED WITH LENS FOR CONTROLLING LIGHT DISTRIBUTION CHARACTERISTIC 有权
用于控制光分配特性的光源提供的发光装置

  • 专利标题: LIGHT EMITTING DEVICE PROVIDED WITH LENS FOR CONTROLLING LIGHT DISTRIBUTION CHARACTERISTIC
  • 专利标题(中): 用于控制光分配特性的光源提供的发光装置
  • 申请号: US12473121
    申请日: 2009-05-27
  • 公开(公告)号: US20090231833A1
    公开(公告)日: 2009-09-17
  • 发明人: Tomohide MIKIKenji TakineRyohei Yamashita
  • 申请人: Tomohide MIKIKenji TakineRyohei Yamashita
  • 优先权: JP2005042533 20050218; JP2005042543 20050218
  • 主分类号: F21V9/16
  • IPC分类号: F21V9/16
LIGHT EMITTING DEVICE PROVIDED WITH LENS FOR CONTROLLING LIGHT DISTRIBUTION CHARACTERISTIC
摘要:
The light emitting device comprises a substrate (2), a positive electrode (6) and a negative electrode (4) formed on the substrate (2), a light emitting diode (8) connected to the positive electrode (6) and the negative electrode (4), the transparent resin (12 and 14) that covers the light emitting diode (8), a fluorescent material (16) that absorbs at least part of light emitted by the light emitting diode (8) and converts it to light of longer wavelength, and the lens that changes the direction of light emission from the light emitting diode (8) and/or the fluorescent material (16). The resin (12 and 14) includes the fluorescent material (16) and is formed so as to constitute the lens of substantially semi-cylindrical shape, and the fluorescent material (16) included in the resin (12 and 14) is distributed with a higher concentration in a region near the surface of the light emitting diode (8) than in a region near the surface of the portion that constitutes the lens.
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