Title:
照明装置における離間した波長変換
Document Type and Number:
Japanese Patent JP5450525
Kind Code:
B2
Abstract:
An illumination device uses a wavelength converting element, such as a phosphor layer, that is physically separated from a light source, such as one or more light emitting diodes, a Xenon lamp or a Mercury lamp. The wavelength converting element is optically separated from the light source, so that the converted light emitted by the wavelength converting element is prevented from being incident on the light source. Accordingly, the temperature limitations of the wavelength converting element are removed, thereby permitting the light source to be driven with an increased current to produce a higher radiance. Moreover, by optically separating the wavelength converting element from the light source, the conversion and recycling efficiency of the device is improved, which also increases radiance.
Inventors:
Gerald Harbors
Mattice H Cuper
Mattice H Cuper
Application Number:
JP2011172691A
Publication Date:
March 26, 2014
Filing Date:
August 08, 2011
Export Citation:
Assignee:
Philips Lumileds Lighting Company Limited Liability Company
International Classes:
F21V13/08; G02F1/13357; F21K99/00; F21S2/00; F21V7/22; F21V9/08; F21V9/40; F21V13/14; F21V29/00; G02B5/18; G02B5/32; G02B27/14; G03B21/00; G03B21/14; G03B21/16; H01L27/00; F21Y101/00; F21Y101/02; H01L33/44; H01L33/58; H01L33/60; H04N9/31
Domestic Patent References:
| JP2004021206A | ||||
| JP1274128A |
Foreign References:
| WO2004068903A1 |
Attorney, Agent or Firm:
Susumu Tsugaru
Fueda Shusen
Fueda Shusen
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