Light source unit and projector

Details Light source unit and projector Light source unit and projector

2007-11-13

2007-11-13

Fuller, Rodney (Department: 2862)

Optics: image projectors

Transparent plate

C362S084000, C362S257000

Reexamination Certificate

active

11057201

ABSTRACT:
It is an object of the present invention to provide a light source unit that can supply bright light efficiently. The light source unit includes a light emitting unit that emits light, a phase plate that polarizes the light from the light emitting unit to produce a first polarized light and a second polarized light that is polarized in a different direction with respect to the first polarized light, a reflecting-type polarizing plate that transmits the first polarized light and reflects the second polarized light; and a reflector that is provided near both the light emitting unit and the phase plate, and reflects back a third light, which is a portion of the first polarized light and that passes through the phase plate, to the phase plate.

REFERENCES:
patent: 5467417 (1995-11-01), Nakamura et al.
patent: 6322225 (2001-11-01), Koike
patent: 6354709 (2002-03-01), Campbell et al.
patent: 6447135 (2002-09-01), Wortman et al.
patent: 6507379 (2003-01-01), Yokoyama et al.
patent: RE38305 (2003-11-01), Gunjima et al.
patent: 6671014 (2003-12-01), Yokoyama et al.
patent: 6671452 (2003-12-01), Winston et al.
patent: 6900858 (2005-05-01), Yokoyama et al.
patent: 7192147 (2007-03-01), Sakata et al.
patent: 2003/0086066 (2003-05-01), Kato
patent: 2007/0121310 (2007-05-01), Sakata et al.
patent: 0 838 715 (1998-04-01), None
patent: 1 055 944 (2000-11-01), None
patent: 1 363 460 (2003-11-01), None
patent: A-11-160655 (1999-06-01), None
patent: A-2000-221499 (2000-08-01), None
patent: A-2001-056451 (2001-02-01), None
patent: A-2002-319708 (2002-10-01), None
patent: A-2003-098483 (2003-04-01), None
patent: A-2003-329978 (2003-11-01), None
patent: A-2003-330109 (2003-11-01), None
patent: WO 97/43686 (1997-11-01), None
patent: WO 98/19201 (1998-05-01), None
patent: WO 01/27528 (2001-04-01), None

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