发明名称 |
Semiconductor lighting device with wavelength conversion on back-transferred light path |
摘要 |
A semiconductor lighting device includes a semiconductor light emitter packaged on a reflective substrate to emit a first light and a remote wavelength conversion layer on a back-transferred light path to convert the back-transferred first light into a forward second light. A filter is disposed on a light emitting forward path with a space to the semiconductor light emitter to reflect back at least a portion of the first light. A diffusive member may be positioned outside of the filter to diffuse the forward passing light before it exits from the semiconductor lighting device. As a second aspect of this invention, a solid state lighting device includes a short wavelength semiconductor emitter; a long wavelength semiconductor emitter with wavelength in reddish orange range; a filter on a light emitting forward path to reflect back a portion of short wavelength first light; and a wavelength conversion component on a back-transferred light path. The device produces a mixture of warm white light in a correlated color temperature from 2700˜3500 K and color rendering index at least 85 for any indoor lighting application. |
申请公布号 |
US8169135(B2) |
申请公布日期 |
2012.05.01 |
申请号 |
US20080336695 |
申请日期 |
2008.12.17 |
申请人 |
ZHAI JINHUI;MOREJON ISRAEL J.;BUI THONG;LEDNOVATION, INC. |
发明人 |
ZHAI JINHUI;MOREJON ISRAEL J.;BUI THONG |
分类号 |
H05B33/00 |
主分类号 |
H05B33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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