Illumination – Self powered lamp – Having plural lamp bulbs or lamp sockets
Reexamination Certificate
2007-03-06
2007-03-06
Ward, John Anthony (Department: 2875)
Illumination
Self powered lamp
Having plural lamp bulbs or lamp sockets
C362S183000, C362S159000, C362S249070, C362S800000
Reexamination Certificate
active
10945801
ABSTRACT:
Improved method and apparatus for hand-held portable LED illumination. The illumination source includes a plurality of LEDs, and an electrical circuit that selectively applies power from the DC voltage source to the LED units, wherein the illumination source is suitable for handheld portable operation. In some embodiments, the electrical circuit further includes a control circuit for changing a proportion of light output having the first characteristic color spectrum output to that having the second characteristic color spectrum output, and that drives the LEDs with electrical pulses at a frequency high enough that light produced has an appearance to a human user of being continuous rather than pulsed. Still another aspect provides an illumination source including a housing including one or more LEDs; and a control circuit that selectively applies power from a source of electric power to the LEDs, thus controlling a light output color spectrum of the LEDs.
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Bourn Charles T.
Lebens Gary A.
Lemaire Charles A.
Lemaire Charles A.
Lemaire Patent Law Firm, P.L.L.C.
Ward John Anthony
Zead Bertrand
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