Illumination – Plural light sources – With support
Reexamination Certificate
2011-02-01
2011-02-01
Han, Jason Moon (Department: 2875)
Illumination
Plural light sources
With support
C362S311020, C362S800000
Reexamination Certificate
active
07878683
ABSTRACT:
LED-based lighting apparatus and assembly methods in which mechanical and/or thermal coupling between respective components is accomplished via a transfer of force from one component to another. In one example, a multiple-LED assembly is disposed in thermal communication with a heat sink that forms part of a housing. A primary optical element situated within a pressure-transfer member is disposed above and optically aligned with each LED. A shared secondary optical facility forming another part of the housing is disposed above and compressively coupled to the pressure-transfer members. A force exerted by the second optical facility is transferred via the pressure-transfer members so as to press the LED assembly toward the heat sink, thereby facilitating heat transfer. In one aspect, the LED assembly is secured in the housing without the need for adhesives. In another aspect, the secondary optical facility does not directly exert pressure onto any primary optical element, thereby reducing optical misalignment.
REFERENCES:
patent: 7182627 (2007-02-01), Huang
patent: 2002/0044456 (2002-04-01), Balestriero
patent: 2006/0146540 (2006-07-01), Reo et al.
patent: 2007/0098334 (2007-05-01), Chen
International Search Report and Written Opinion used by the European Patent Office in a counterpart international application No. PCT/US2008/062326, Jul. 21, 2008.
Logan Derek
Piepgras Colin
Han Jason Moon
Koninklijke Philips Electronics , N.V.
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