Optics: image projectors – Image moves on screen – Reflector between lamp and screen
Reexamination Certificate
2011-01-04
2011-01-04
Pyo, Kevin (Department: 2878)
Optics: image projectors
Image moves on screen
Reflector between lamp and screen
C353S077000, C353S098000, C359S449000
Reexamination Certificate
active
07862180
ABSTRACT:
The invention provides an optical system for image projection, wherein when used in an image projection apparatus, a screen-continuing portion (e.g., screen-underlying portion) of the apparatus can be reduced to a small size, or can be removed, and thereby the apparatus can be so compacted, and provides an image projection apparatus mounting such optical system. An optical system10for image projection including a lighting optical system1leading light from a light source11for lighting a display element4(or4′), and a projecting optical system3for projecting projection light containing image information from the display element4(or4′). The lighting optical system1is arranged such that a straight optical axis α from the light source11in the lighting optical system1is positioned in an area deviated from a luminous flux β of the projection light incident into the projecting optical system3toward an area where the projection light γ from the projecting optical system3passes. The image projection apparatus A (or B or C) mounting such optical system10.
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Form PCT/IB/311, WO 2006/054671 A1, concerning International Application No. PCT/JP2005/021185, cites the following documents in the order they appear in the International Search Report (ISR) (with an English-language translation thereof).
Form PCT/IB/338, dated Jun. 11, 2007, concerning International Application No. PCT/JP2005/021185, with the International Preliminary Report on Patentability (PCT/IB/373) cites the following documents in the order they appear in the translation of the Written Opinion of the International Searching Authority (PCT/ISA/237).
Hayashi Kohtaro
Sawamura Shigeru
Konica Minolta Opto Inc.
Pyo Kevin
Sidley Austin LLP
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