发明授权
- 专利标题： Light emitting apparatus generating white light by mixing of light of a plurality of oscillation wavelengths
- 专利标题（中）： 发光装置通过混合多个振荡波长的光产生白光
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申请号： US11158399申请日： 2005-06-20
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公开(公告)号： US07170234B2公开(公告)日： 2007-01-30
- 发明人: Hiroshi Chikugawa , Masaaki Katoh
- 申请人： Hiroshi Chikugawa , Masaaki Katoh
- 申请人地址： JP Osaka
- 专利权人： Sharp Kabushiki Kaisha
- 当前专利权人： Sharp Kabushiki Kaisha
- 当前专利权人地址： JP Osaka
- 代理机构： Morrison & Foerster LLP
- 优先权： JP2004-182712 20040621
- 主分类号： H05B39/04
- IPC分类号： H05B39/04 ; H05B37/02 ; H05B37/04
摘要：
A current of the same amount or in a constant ratio is applied to each of a combination of a blue light emitting diode having a small wavelength variation and a green light emitting diode having a large wavelength variation. With this, as an amount of applied current increases, an oscillation wavelength of the green light emitting diode having the large wavelength variation changes from a long wavelength side to a short wavelength side and mixes with a blue color of the blue light emitting diode having the small wavelength variation to gradually change chromaticity as a whole. When desired chromaticity is obtained, the amount of the current is fixed.
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