Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2006-08-08
2006-08-08
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C445S023000
Reexamination Certificate
active
07088040
ABSTRACT:
Upconversion methods and devices that converts near-infrared light to the visible spectrum using a rare-earth-doped crystalline host for use as general and decorative lighting. The pseudo-monochromatic output of the processes can be specified by altering the amount and type of rare-earth material used and by selection of an appropriate host. Using rare-earth materials such as ytterbium-erbium or ytterbium-thulium can produce red, green and blue emissions, where the additive mixture of these colors yields a high-quality white light. The materials can be adjusted to achieve white light with any color temperature and high color-rendering index (CRI) for any general and decorative lighting applications both indoors and outdoors.
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Bass Michael
Ducharme Alfred D.
Rapaport Alexandra
Law Office of Brian S. Steinberger
Steinberger Brian S.
University of Central Florida Research Foundation Inc.
Williams Joseph
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