Illumination – Light modifier – Refractor
Reexamination Certificate
2008-05-13
2008-05-13
Cariaso, Alan (Department: 2885)
Illumination
Light modifier
Refractor
C362S299000, C362S308000, C362S310000, C362S329000
Reexamination Certificate
active
07370993
ABSTRACT:
This invention is an illumination system that incorporates a light emitting diode and a partially reflecting optical element. The light emitting diode emits internally generated light having a first angular range and reflects incident light with high reflectivity. The partially reflecting optical element transmits a first portion of the internally generated light with a second angular range, smaller than the first angular range, and reflects a second portion of the internally generated light back to the light emitting diode, where the second portion is reflected by the light emitting diode. The partially reflecting optical element can be a pyramid, an array of pyramids, a first and second orthogonal arrays of prisms or a bandpass filter. Utilizing a partially reflecting optical element and light recycling can increase the effective brightness and the output efficiency of the illumination system.
REFERENCES:
patent: 5162878 (1992-11-01), Sasagawa et al.
patent: 5410454 (1995-04-01), Murase et al.
patent: 5418700 (1995-05-01), Demeritt et al.
patent: 5519513 (1996-05-01), Copenhaver et al.
patent: 5544019 (1996-08-01), Tatavoosian et al.
patent: 5813753 (1998-09-01), Vriens et al.
patent: 6144536 (2000-11-01), Zimmerman et al.
patent: 6177761 (2001-01-01), Pelka et al.
patent: 6185357 (2001-02-01), Zou et al.
patent: 6186649 (2001-02-01), Zou et al.
patent: 6550942 (2003-04-01), Zou et al.
patent: 6869206 (2005-03-01), Zimmerman et al.
patent: 7222993 (2007-05-01), Kikuchi et al.
patent: 2001/0013924 (2001-08-01), Yokoyama et al.
patent: 2004/0196667 (2004-10-01), Lea
patent: 2004/0263061 (2004-12-01), Ishikawa et al.
Beeson Karl W.
Zimmerman Scott M.
Cariaso Alan
Goldeneye, Inc.
Propp William
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