Invention Grant
US08169135B2 Semiconductor lighting device with wavelength conversion on back-transferred light path
失效
半导体照明装置在反向传输光路上具有波长转换
- Patent Title: Semiconductor lighting device with wavelength conversion on back-transferred light path
- Patent Title (中): 半导体照明装置在反向传输光路上具有波长转换
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Application No.: US12336695Application Date: 2008-12-17
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Publication No.: US08169135B2Publication Date: 2012-05-01
- Inventor: Jinhui Zhai , Israel J. Morejon , Thong Bui
- Applicant: Jinhui Zhai , Israel J. Morejon , Thong Bui
- Applicant Address: US FL Tampa
- Assignee: Lednovation, Inc.
- Current Assignee: Lednovation, Inc.
- Current Assignee Address: US FL Tampa
- Agency: Phelps Dunbar LLP
- Agent Harvey S. Kauget
- Main IPC: H05B33/00
- IPC: H05B33/00

Abstract:
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.
Public/Granted literature
- US20100149814A1 Semiconductor Lighting Device With Wavelength Conversion on Back-Transferred Light Path Public/Granted day:2010-06-17
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