Title:
波長変換要素を使用するチューニング可能な白色点光源
Document Type and Number:
Japanese Patent JP2010514153
Kind Code:
A
Abstract:
A uniform high brightness light source is provided using a plurality of light emitting diode (LED) chips with slightly different pump wavelengths with a wavelength converting element that includes at least two different wavelength converting materials that convert the light to different colors of light. The intensity of the light produced by the LED chips may be varied to provide a tunable CCT white point. The wavelength converting element may be, e.g., a stack or mixture of phosphor or luminescent ceramics. Moreover, the manufacturing process of the light source is simplified because the LED chips are all manufactured using the same technology eliminating the need to manufacture different types of chips.
Inventors:
Beer Huizen Serge Ye
Halbers herald
Halbers herald
Application Number:
JP2009540957A
Publication Date:
April 30, 2010
Filing Date:
December 12, 2007
Export Citation:
Assignee:
Philips Lumileds Lighting Company Limited Liability Company
Koninklijke Philips Electronics N.V.
Koninklijke Philips Electronics N.V.
International Classes:
H01L33/50; F21K99/00; F21S2/00; F21V3/04; F21V23/00; F21V29/00; H05B44/00; F21Y101/02
Domestic Patent References:
| JP2005347263A | 2005-12-15 | |||
| JP2006332382A | 2006-12-07 | |||
| JP2006245443A | 2006-09-14 | |||
| JP2004228464A | 2004-08-12 | |||
| JP2000031532A | 2000-01-28 | |||
| JP2002170999A | 2002-06-14 | |||
| JP2006128456A | 2006-05-18 | |||
| JP2004207367A | 2004-07-22 | |||
| JP2005522866A | 2005-07-28 | |||
| JP2005347263A | 2005-12-15 |
Foreign References:
| WO2003086023A1 | 2003-10-16 | |||
| WO2005112137A1 | 2005-11-24 |
Attorney, Agent or Firm:
Sadao Kumakura
Disciple Maru Ken
Ino Sato
Mitsuru Matsushita
Ichiro Kurasawa
Disciple Maru Ken
Ino Sato
Mitsuru Matsushita
Ichiro Kurasawa