Television – Video display – Projection device
Reexamination Certificate
2004-07-01
2008-01-29
Ometz, David (Department: 2622)
Television
Video display
Projection device
C348S781000, C348S786000, C348S744000, C348S756000, C353S119000, C353S122000, C359S754000, C359S649000
Reexamination Certificate
active
07324169
ABSTRACT:
Provided are a projection optical system, a projection television, and a method of manufacturing a lens included in the projection optical system. The projection optical system includes lenses for projecting color beams onto a screen. A color filter layer, absorbing at least one of the color beams, is coated on the surface of at least one of the lenses.
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International Search Report (PCT/ISA/210) 6 pages.
Chinese Patent Office Action dated Jun. 22, 2007.
Chinese Patent Action dated Jun. 1, 2007.
Hwang Gyu-hwan
Kah Young-Il
Kim Sung-gi
Yoon Seok-il
Desir Jean W.
Ometz David
Sughrue Mion Pllc.
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