Optics: image projectors – Particular condenser
Reexamination Certificate
2008-11-21
2011-11-22
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Particular condenser
C353S098000, C353S099000, C362S328000, C362S331000, C362S346000
Reexamination Certificate
active
08061857
ABSTRACT:
An LED light shaping device and illumination system are provided. According to one embodiment, a light shaping lens is configured to shape light emitted from a light source and direct the light on a display panel for projection. The light shaping lens comprises a light input surface configured to receive light emitted from the light source a reflective surface configured to reflect at least part of the light received by the light source; and a light output surface having a first curvature in a first direction and a second curvature in a second direction, wherein the light output surface is configured to emit the light that is received by the light input surface and reflected by the reflective surface, and wherein the first curvature and the second curvature are configured to shape the light such that the emitted light has an oval cross section.
REFERENCES:
patent: 2254962 (1941-09-01), Bitner et al.
patent: 4767172 (1988-08-01), Nichols et al.
patent: 5757557 (1998-05-01), Medvedev et al.
patent: 6547423 (2003-04-01), Marshall et al.
patent: 6664814 (2003-12-01), Evans et al.
patent: 6819505 (2004-11-01), Cassarly et al.
patent: 6902291 (2005-06-01), Rizkin et al.
patent: 6974234 (2005-12-01), Galli
patent: 7401948 (2008-07-01), Chinniah et al.
patent: 7411742 (2008-08-01), Kim et al.
patent: 7744246 (2010-06-01), Rizkin et al.
patent: 2002/0080615 (2002-06-01), Marshall et al.
patent: 2005/0135109 (2005-06-01), Stout
patent: 2008/0137042 (2008-06-01), Alasaarela
patent: 2883909 (2007-03-01), None
patent: 101105272 (2008-01-01), None
patent: 101109488 (2008-01-01), None
patent: 101210657 (2008-07-01), None
patent: 101262034 (2008-09-01), None
International Search Report and Written Opinion issued in International Application No. PCT/CN2008/073527, dated Jul. 30, 2009.
Chen Shou-Lung
Liu Ying
Cruz Magda
Epps Georgia Y
Farnsworth Todd R.
Hong Kong Applied Science and Technology Research Institute Co.
Kaminski Jeffri A.
LandOfFree
LED light shaping device and illumination system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with LED light shaping device and illumination system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LED light shaping device and illumination system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4294453