发明授权
- 专利标题： Light emitting device with phosphor composition
- 专利标题（中）： 具有荧光粉组成的发光器件
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申请号： US09718240申请日： 2000-11-22
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公开(公告)号： US06580097B1公开(公告)日： 2003-06-17
- 发明人: Thomas Frederick Soules , William Winder Beers , Alok Mani Srivastava , Lionel Monty Levinson , Anil Raj Duggal
- 申请人： Thomas Frederick Soules , William Winder Beers , Alok Mani Srivastava , Lionel Monty Levinson , Anil Raj Duggal
- 主分类号： H01L3300
- IPC分类号： H01L3300
摘要：
The invention relates to a light source comprising a phosphor composition 14 and a light emitting device 12 such as an LED or a laser diode 32. The phosphor composition 14 absorbs radiation having a first spectrum and emits radiation having a second spectrum and comprises at least one of: YBO3:Ce3+,Tb3+; BaMgAl10O17:Eu2+,Mn2+; (Sr,Ca,Ba)(Al,Ga)2S4:Eu2+; and Y3Al5O12—Ce3+; and at least one of: Y2O2S:Eu3+,Bi3+; YVO4:Eu3+,Bi3+; SrS:Eu2+; SrY2S4:Eu2+; CaLa2S4:Ce3+; and (Ca,Sr)S:Eu2+. The phosphor composition 14 and the light source 12 together can produce white light with pleasing characteristics, such as a color temperature of 3000-6500° K, a color rendering index of about 83-87, and a device luminous efficacy of about 10-20 lumens per watt.
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