Projection-type video display

Details Projection-type video display Projection-type video display

2005-06-28

2005-06-28

Dowling, William C. (Department: 2851)

Optics: image projectors

Composite projected image

Multicolor picture

C353S020000, C349S005000

Reexamination Certificate

active

06910775

ABSTRACT:
A projection-type display apparatus is improved in contrast by an overlap between a band of light to be cut off by a notch filter and a band of light wavelengths to which the polarization converting efficiencies of first and second specific-wavelength converter elements are 50%, respectively.

REFERENCES:
patent: 6183091 (2001-02-01), Johnson et al.
patent: 6419362 (2002-07-01), Ikeda et al.
patent: 6678015 (2004-01-01), Yi et al.
patent: 6698896 (2004-03-01), Suzuki et al.
patent: 6747709 (2004-06-01), Kwon et al.
patent: 2003/0107809 (2003-06-01), Chen et al.
patent: 2001-154152 (2001-06-01), None
patent: 2001-154268 (2001-06-01), None
patent: 2001-154294 (2001-06-01), None
patent: 2001-228440 (2001-08-01), None

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